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DIY secondary cooling system

203K views 789 replies 109 participants last post by  Pvpmedics  
#1 · (Edited)
I can't post in the DIY section so I'll post here. If you like it feel free to put it there. Please dont turn this into a "my truck does not overheat" thread and leave comments open for those that have questions about this job. Thx


I have never done a DYI thread before so please bear with me. Before I get started I want to make a few things clear.
1) This is not a turn key system.
2) This system has only been tested on my truck.
3) If you want a turn key system that has been tested and proven on many stock trucks you should buy the V2 from TxChris.
4) If you have the ability to cut, drill, weld, be patient and have the desire to fix things yourself this may be the fix for you!

This project cost approx $700.00 SIZE]

First we will start off with designing your radiator. The first thing you want to do is pick where you want to put it. The most obvious place is right behind the front valance between the two hook brackets. There is a lot of room to work in there and it is a convenient place for plumbing later on. The only challenge you will face here is going to be air flow. If you put it here you will either have to cut your valance or put a fan on the radiator.

Once you have decided on a location you need to get your tape measure and get up in there. Measure the maximum amount of space you have to work with. Now that you have an idea of how much room you have to work with its time to make yourself a mock up.

The easiest way to do this is to go to you local home improvement store and buy some foam sheets. The are usually in the garage door section and are relatively cheap. You will stack and cut these sheets to the same dimensions as the space you measured.

Now that you have your mock up ready its time to fit it. Climb under the truck and slid it into place. Mark where it hits so you can shave it accordingly. Now that you have it fitting snugly where you want it and you have clearance on all sides you need to decide how you are going to mount it and plumb it. I use some flat bar to mock my brackets and wrote on the side of the mock up the angle and location they needed to be placed. I then took some 2” tubing and did the same for the intake and discharge pipes. For the upper mount I attached it to the bumper brackets. For the lower I made my own bracket and mounted it to the tow hooks. (keep in mind you need to leave yourself about 1-1.5” room for your rubber mounts between brackets and radiator mounts) As for the plumbing I chose to rout the lines over the bar that your splash guard attaches to. As long as your measurements are accurate your tranny lines will not be an issue.

Once you have your mock up sized properly and all your mounts and pipes located on it and set at the correct angles it is time to draw it up. I used VISIO to draft it but you could do it by hand just as easy. My drawings came up like so.


http://yfrog.com/2tradadditionasidesj
http://yfrog.com/g0radadditionafrontj
http://yfrog.com/5mradadditionabackj

Now you can take your drawings and your mock up and either go to a custom radiator shop or try to find one already made that might fit. After lots of searching I found some fork lift radiators that might have worked but they were about 350-400 and for $600 I was able to have one made exactly the way I wanted it so I went to Ron Davis and this is what they made for me. The part number is stamped on it and can be ordered using that number.

http://yfrog.com/0uimg00192201005030904j
http://yfrog.com/03img00191201005030904j
http://yfrog.com/0yimg00190201005030904j
http://yfrog.com/jbimg00189201005030903j
http://yfrog.com/86img00188201005030903j

It took about 4 weeks to make it but it was well worth the wait.

Now that you have your radiator in hand it’s time to install it!
From this point on the way you do it and what you use may change if you use a different radiator than mine or put it in a different place but the concept is the same so here goes.

First uninstall your splash guard.
Next remove the bolts that run vertically through the bumper mount. The bolts/nut assembly will have to be replaced because it is not long enough to support the radiator and the motor mount you will be using. KEEP THOSE TWO BOLTS BECAUSE YOU WILL USE THEM FOR YOUR LOWER BRACKET.

Now fit your radiator up in place and mark your holes on the upper brackets. Pull the radiator out and drill them. (it helps to drill these holes slightly larger than the bolt that will be going through it). You now need to get 2 bolts ( I think they were ½ inch) that will thread into the bumper brackets. They need to be long enough to pass through the bracket, motor mount

http://yfrog.com/5mimg00193201005030930j

and radiator mount. One challenge you will face here is being able to reach the top of the bolt while the radiator is in place. To solve this I made two square plates and drilled them. I slid the bolt through the plate and welded It together. This plate fits inside the bumper bracket and prevents the bolt from spinning allowing me to tighten the nut from the bottom. Be sure to use a lock nut not a lock washer on this because the lock washer can loosen up over time due to the flex of the motor mount.

Before you bolt your radiator up in place for the last time you need to install your degas fitting and hose. Here is what I used.

http://yfrog.com/juimg00197201005060940j
http://yfrog.com/2gimg00208201005101246j

So with your fitting and degas line installed slide your radiator back up in there for the last time and bolt it in place. Now its time for the lower bracket.

This is the piece that required the most fabrication. First I made 2 L shaped brackets. The were designed to bolt to the outside of the tow hook mounts then come below and attach to the lower radiator bracket. You can use these just like this if you want but I decided to add a lower joining piece to protect the radiator as well as support it from flex of the frame. Here are pics of my end result.

http://yfrog.com/85img00216201005101511j
http://yfrog.com/61img00214201005101350j
http://yfrog.com/75img00212201005101343j
http://yfrog.com/1nradlowerbracketj

This is where those two bolts you saved from before come in. They will be use to attach the bracket to the side of the tow hook support. The ones you remove will not be long enough. I gain used ½ inch bolts with lock washers long enough to pass through both brackets as well as motor mounts to mount the brace to the radiator. I have purposely not put hole locations with measurements due to the fact that all of our trucks are a little different and will likely require slightly different holes. For the best results mark and drill them yourself. This should conclude your mounting of the radiator. Now on to plumbing.

Start draining your system. While this takes place you can hook up your degas line. To do this you will have to make an adapter to splice into your current degas line system. The factory hose is ½ (I think) and the one on your radiator is ¼”. This is what I made to make the splice.

http://yfrog.com/2rimg00215201005101417j

This line is very important to purge air out of the system. Do not cap that fitting and skip this step.

The degas line goes from the bottom of your overflow tank to the top of your radiator on the passenger side. I ran my blue line in front of the coolers zip tying it to the holes on the back of the bumper then up to the degas on the pass side. This keeps the hose out of the way of any moving parts.

By now your system should be mostly empty it is time to work on your lower radiator hose. The first thing I did was cut the lower radiator hose in the middle. By the middle I mean roughly centered to the radiator. (watch out because there will be fluid left in the hose when you cut it)

http://yfrog.com/1rimg00218201005101512j
http://yfrog.com/jbimg00217201005101511j


Once the hose is cut take you 2 12” 90’s

http://yfrog.com/4vimg00204201005100926j

and slide them in place. Take a look at how you want to plumb it and start trimming. This is a pic of how I did it.

http://yfrog.com/89img00220201005101607j
http://yfrog.com/jcimg00219201005101606j

The key here is to plumb it so that none of your hoses have any kinks in them. For me the easiest way to accomplish this was to plumb it in a chris cross fashion rather than go from right port to right port then left to left.

To join the 4 hose ends I had Ron davis make me some flanged pipes at 18” then I cut and spliced them to size (approx 8” end to end)

http://yfrog.com/2mimg00199201005060941j

Now its time to tighten you hose clamps and fill it with fluid.
Be sure to carry 2 gallons of coolant and water, my system continued to purge for a day or so till it was finally full. Overall I think it added a little over a gallon to the system.

Here is the part you have to address from the beginning, that is air flow. The two most obvious options are to whether put a fan on it or cut your valance to open up air flow. I chose the latter due to the fact that the truck only gets hot at speed and I like to keep things as simple as possible. If you put a fan on it be sure to check you clearance before mounting it, from the looks a pusher fan will be your only option and that will have to be shorter than the radiator is in order to fit. If you choose to cut your valance I would suggest pitting some sort of screen in it to protect your radiator from debris. I am having a friend at Lake Pleasant Collision make a billet insert for mine so it looks clean.

Gratz you have hopefully solved your cooling issue!
 
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#2 ·
You *might* want to add some rubber between the rad and brackets, for movement purposes. ;)
 
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#3 · (Edited)
You *might* want to add some rubber between the rad and brackets, for movement purposes. ;)
I did, thats what the motor mounts are for. If they are not there in the pics ist because I took them while fitting it.

I also did not state that you need to ground the radiator to prevent electrolysis.

Sorry for any confusion.
 
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#4 ·
Moved to DIY.

Awesome Job!!!
 
#5 ·
Moved to DIY.

Awesome Job!!!
Ty, also if anyone is interested in doing this but lacks the ability to fabricate just pm me I can give you a cost on making the brackets.
 
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#8 ·
Nice write-up.

I've had my LLY for 9 months and bought it specifically for pulling a 5th wheel North to escape our summer heat. I did not learn about the chronic problems the LLY has until I did my first trip north about a month ago. (it was the first time I heard the fan clutch engage) Since then, I've read almost everything this forum has to offer on the subject - it's like "War and Peace".

I had just about conceded that I need to pony up for the rad v2 with fan until I read your DIY'er.

Like you, I think my heat issues will be confined to highway speed, up grades, when pulling. If I can get an auxiliary radiator into some clean air I think that will keep the ECT in check.

Are you running coolant into the auxiliary radiator first? And does it matter the order?

Can you post pictures of your valance, with or without the rock screen - Thanks.
 
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#9 · (Edited)
Nice write-up.

I've had my LLY for 9 months and bought it specifically for pulling a 5th wheel North to escape our summer heat. I did not learn about the chronic problems the LLY has until I did my first trip north about a month ago. (it was the first time I heard the fan clutch engage) Since then, I've read almost everything this forum has to offer on the subject - it's like "War and Peace".

I had just about conceded that I need to pony up for the rad v2 with fan until I read your DIY'er.

Like you, I think my heat issues will be confined to highway speed, up grades, when pulling. If I can get an auxiliary radiator into some clean air I think that will keep the ECT in check.

Are you running coolant into the auxiliary radiator first? And does it matter the order?

Can you post pictures of your valance, with or without the rock screen - Thanks.
Coolant comes out of the lower passenger side of the main radiator and goes into the aux radiator on the driver side. It then exits the aux radiator on the passenger side and goes into the engine. Basically all you do is cut the lower factory radiator hose about dead center in fron of the aux radiator and splice in there.

As for pics of my valance, I'll post them as soon as we are done. My buddy is taking his time with it because he is a perfectionist and wants it to look pro. If you have any trouble finding the parts listed in the write up or have questions regarding the job feel free to pm me.
 
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#10 ·
Not putting a price on your time.....What did the cost of all the materials come out too??
 
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#13 ·
Price



Don't know how I missed it, but I did see on the first post the price for all materials....
 
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#11 · (Edited)
With all the work, which is good! The big question is....."does it work" have you had a chance to test it out? What I mean by "work" is, does your temps say in check???? I would love do this I just want to make sure its worth it... :)
 
#14 · (Edited)
With all the work, which is good! The big question is....."does it work" have you had a chance to test it out? What I mean by "work" is, does your temps say in check???? I would love do this I just want to make sure its worth it... :)
Today I towed a tank we built up to wickenburg. The tank was about 10k lbs and about as aerodynamic as Rosey Odonnel in a wind tunnel. The drive does not have any serious grades at all but I ran 74mph all the way up and the fan only came on 2 times very briefly and not nearly as loud as I remember. Oddly enough it came on while slowing to a stop for a red lights then it immedaitely shut off when I got up to speed again. The factory gauge never went over 190deg.

It has not been hot enough to really run this thing through the ringer. The first time it hits 110 deg, I will be loading up my buddies 34' BP trailer fully loaded and tow it up to flag.

With that said I have already noticed it takes much longer for the truck to warm up. When it finally hits 190 and the thermostat opens up for the first time it immediately drops back to 160.
 
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#12 ·
X2
 
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#16 ·
As you can see, Im in AZ as well so when it gets 110 and you do the full test can you post the findings? Im in need of something to keep her cool.
 
#17 ·
As you can see, Im in AZ as well so when it gets 110 and you do the full test can you post the findings? Im in need of something to keep her cool.
Absolutely, I plan on it!
 
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#18 · (Edited)
Here is the pic of our prototype valance, sorry it took so long, Matt was trying to figure out how to roll the edges without ruining the texture. He tells me that if I wanted to paint it the texture would not be an issue but since I want to keep the origional color we had to do it this way.

http://yfrog.com/3uvalancej

The adhesive will be dry enough to install tomorrow and I will post some installed pics. Also it looks like it will be warm enough to test the truck this weekend, I will keep you guys updated.
 
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#19 ·
Looks good....Can't wait for the test....
 
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#20 ·
Here are some pics of the valance installed on my truck. There are a few options on how you can do it from simply cutting a hole and placing expanded metal in it to heating, rolling the edges, painting it to match your truck and adding a custom Billet grill in place of the expanded metal.

http://yfrog.com/50installedvalance3j
http://yfrog.com/83installedvalance2j
http://yfrog.com/6cinstalledvalance1j

For questions on either your valance or assistance with a complete install please PM me.

I will be testing the truck this weekend and will post results ASAP
 
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#21 ·
Ok I finally got a chance to test it. Although mother nature played a nasty trick on me I am happy with the results. All last week I saw the temps in Phoenix hold steady over 100 degrees so I decided to take the weekend off to go gcamping at a friends place up in Humbolt. Saturday morning rolls around and the high was 80 deg. Not as hot as I'd hoped for but I already had the weekend off so I had to go anyway. Humbolt is just west of Cordes Junction on Highway 69. To get there I had to drive up I 17 from Phoenix to Cordes Junction. I borrowed another friends 34' Bumper pull trailer. Its GVW is 12,000 lbs. Here is a pic

http://yfrog.com/eqtrailerlj

In order to get the most out of this test I made sure all the tanks were full of water to make it as heavy as possible.

I left at 11AM sat and proceeded up I-17. I intentionally drove it harder than usual maintaining 75MPH all the way to Rock springs where the speed limit drops to 65mph. This stretch of road is made up of about 30 miles of hills steadily increasing in elevation. Nothing too crazy but steep enough to get the truck pre warmed for the big pull.

At rock springs the speed limit drops to 65mp and you see all the signs telling slower traffic to keep right and to turn off ac to prevent overheating. This stretch lasts about 6 miles and is known for breaking cars all the time. For this part I kept the truck at 65mph almost the entire way up. about 3/4 of the way up I had to move right for a car that was doing about 80 and I got stuck behind a semi doing about 40. As soon as the car went by I moved left and punched it. On the steepest part of the grade I accelerated from about 40 to 65 over the course of about 3/4 mile and these were my gauges at the top.

http://yfrog.com/muenginetempj
http://yfrog.com/3utranstempj

Average EGT was about 1100 Deg Average boost was about 22 PSI (during the big climb)
Max EGT was 1200 Max boost was 27PSI (this was while passing that semi up the hill)

They were in exactly the same position they had been in theo entire trip, infact thats the same position they sit in when I am driving under normal conditions.

I know, factory gauges are not that accurate but prior to this system being installed on my truck I could get them to go up to 230-240 pretty easily with a trailer 1/2 this size.

The return trip home it was 90 degrees outside and the gauges were exactly the same. Most of it was down hill but there are uphill portions and the truck seemed unaffected in the increased outside temps.

Another interesting not regarding the fan. Previously once the fan engaged the tems were usually past the 210 mark and would get rediculously loud. It would bog the truck down and basically do nothing to bring the temps back down. The only way to get the temps in check was to let off the throttle.

Now when the fan did come on it was much quieter and never for more than 30-45 seconds at a time. It was rather intermittent and had no correlation to change in coolant or transmission temps. It also did not bog the truck down at all that I could notice. This leads me to belive it never fully engaged. It came on during the big hill when I was passing and shut off immedaitly when I crested the hill and it oddly enough came on when slowing down but only for a few seconds.

My conclusion, I am pretty confident I have solved the OH issue for my truck. I know it was not as hot out as I had hoped for and I know the trailer I towed was not a 5th wheel but the trailer was very heavy and I pushed the truck much harder that I would have under normal conditions with no signs of engine temp rise at all. This was on the same stretch of road that I had previously had to baby my truck to get up towing a trailer 10' shorter than this beast.
 
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#22 ·
Awesome. I will definitely be doing this mod. Thanks for your effort.
 
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#23 ·
X2 on doing this mod....gotta have it if your towing in 100 plus temps like I do...
 
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#24 ·
Secondary cooling

I can't post in the DIY section so I'll post here. If you like it feel free to put it there. Please dont turn this into a "my truck does not overheat" thread and leave comments open for those that have questions about this job. Thx


I have never done a DYI thread before so please bear with me. Before I get started I want to make a few things clear.
1) This is not a turn key system.
2) This system has only been tested on my truck.
3) If you want a turn key system that has been tested and proven on many stock trucks you should buy the V2 from TxChris.
4) If you have the ability to cut, drill, weld, be patient and have the desire to fix things yourself this may be the fix for you!

This project cost approx $700.00 SIZE]

First we will start off with designing your radiator. The first thing you want to do is pick where you want to put it. The most obvious place is right behind the front valance between the two hook brackets. There is a lot of room to work in there and it is a convenient place for plumbing later on. The only challenge you will face here is going to be air flow. If you put it here you will either have to cut your valance or put a fan on the radiator.

Once you have decided on a location you need to get your tape measure and get up in there. Measure the maximum amount of space you have to work with. Now that you have an idea of how much room you have to work with its time to make yourself a mock up.

The easiest way to do this is to go to you local home improvement store and buy some foam sheets. The are usually in the garage door section and are relatively cheap. You will stack and cut these sheets to the same dimensions as the space you measured.

Now that you have your mock up ready its time to fit it. Climb under the truck and slid it into place. Mark where it hits so you can shave it accordingly. Now that you have it fitting snugly where you want it and you have clearance on all sides you need to decide how you are going to mount it and plumb it. I use some flat bar to mock my brackets and wrote on the side of the mock up the angle and location they needed to be placed. I then took some 2” tubing and did the same for the intake and discharge pipes. For the upper mount I attached it to the bumper brackets. For the lower I made my own bracket and mounted it to the tow hooks. (keep in mind you need to leave yourself about 1-1.5” room for your rubber mounts between brackets and radiator mounts) As for the plumbing I chose to rout the lines over the bar that your splash guard attaches to. As long as your measurements are accurate your tranny lines will not be an issue.

Once you have your mock up sized properly and all your mounts and pipes located on it and set at the correct angles it is time to draw it up. I used VISIO to draft it but you could do it by hand just as easy. My drawings came up like so.


http://yfrog.com/2tradadditionasidesj
http://yfrog.com/g0radadditionafrontj
http://yfrog.com/5mradadditionabackj

Now you can take your drawings and your mock up and either go to a custom radiator shop or try to find one already made that might fit. After lots of searching I found some fork lift radiators that might have worked but they were about 350-400 and for $600 I was able to have one made exactly the way I wanted it so I went to Ron Davis and this is what they made for me. The part number is stamped on it and can be ordered using that number.

http://yfrog.com/0uimg00192201005030904j
http://yfrog.com/03img00191201005030904j
http://yfrog.com/0yimg00190201005030904j
http://yfrog.com/jbimg00189201005030903j
http://yfrog.com/86img00188201005030903j

It took about 4 weeks to make it but it was well worth the wait.

Now that you have your radiator in hand it’s time to install it!
From this point on the way you do it and what you use may change if you use a different radiator than mine or put it in a different place but the concept is the same so here goes.

First uninstall your splash guard.
Next remove the bolts that run vertically through the bumper mount. The bolts/nut assembly will have to be replaced because it is not long enough to support the radiator and the motor mount you will be using. KEEP THOSE TWO BOLTS BECAUSE YOU WILL USE THEM FOR YOUR LOWER BRACKET.

Now fit your radiator up in place and mark your holes on the upper brackets. Pull the radiator out and drill them. (it helps to drill these holes slightly larger than the bolt that will be going through it). You now need to get 2 bolts ( I think they were ½ inch) that will thread into the bumper brackets. They need to be long enough to pass through the bracket, motor mount

http://yfrog.com/5mimg00193201005030930j

and radiator mount. One challenge you will face here is being able to reach the top of the bolt while the radiator is in place. To solve this I made two square plates and drilled them. I slid the bolt through the plate and welded It together. This plate fits inside the bumper bracket and prevents the bolt from spinning allowing me to tighten the nut from the bottom. Be sure to use a lock nut not a lock washer on this because the lock washer can loosen up over time due to the flex of the motor mount.

Before you bolt your radiator up in place for the last time you need to install your degas fitting and hose. Here is what I used.

http://yfrog.com/juimg00197201005060940j
http://yfrog.com/2gimg00208201005101246j

So with your fitting and degas line installed slide your radiator back up in there for the last time and bolt it in place. Now its time for the lower bracket.

This is the piece that required the most fabrication. First I made 2 L shaped brackets. The were designed to bolt to the outside of the tow hook mounts then come below and attach to the lower radiator bracket. You can use these just like this if you want but I decided to add a lower joining piece to protect the radiator as well as support it from flex of the frame. Here are pics of my end result.

http://yfrog.com/85img00216201005101511j
http://yfrog.com/61img00214201005101350j
http://yfrog.com/75img00212201005101343j
http://yfrog.com/1nradlowerbracketj

This is where those two bolts you saved from before come in. They will be use to attach the bracket to the side of the tow hook support. The ones you remove will not be long enough. I gain used ½ inch bolts with lock washers long enough to pass through both brackets as well as motor mounts to mount the brace to the radiator. I have purposely not put hole locations with measurements due to the fact that all of our trucks are a little different and will likely require slightly different holes. For the best results mark and drill them yourself. This should conclude your mounting of the radiator. Now on to plumbing.

Start draining your system. While this takes place you can hook up your degas line. To do this you will have to make an adapter to splice into your current degas line system. The factory hose is ½ (I think) and the one on your radiator is ¼”. This is what I made to make the splice.

http://yfrog.com/2rimg00215201005101417j

This line is very important to purge air out of the system. Do not cap that fitting and skip this step.

The degas line goes from the bottom of your overflow tank to the top of your radiator on the passenger side. I ran my blue line in front of the coolers zip tying it to the holes on the back of the bumper then up to the degas on the pass side. This keeps the hose out of the way of any moving parts.

By now your system should be mostly empty it is time to work on your lower radiator hose. The first thing I did was cut the lower radiator hose in the middle. By the middle I mean roughly centered to the radiator. (watch out because there will be fluid left in the hose when you cut it)

http://yfrog.com/1rimg00218201005101512j
http://yfrog.com/jbimg00217201005101511j


Once the hose is cut take you 2 12” 90’s

http://yfrog.com/4vimg00204201005100926j

and slide them in place. Take a look at how you want to plumb it and start trimming. This is a pic of how I did it.

http://yfrog.com/89img00220201005101607j
http://yfrog.com/jcimg00219201005101606j

The key here is to plumb it so that none of your hoses have any kinks in them. For me the easiest way to accomplish this was to plumb it in a chris cross fashion rather than go from right port to right port then left to left.

To join the 4 hose ends I had Ron davis make me some flanged pipes at 18” then I cut and spliced them to size (approx 8” end to end)

http://yfrog.com/2mimg00199201005060941j

Now its time to tighten you hose clamps and fill it with fluid.
Be sure to carry 2 gallons of coolant and water, my system continued to purge for a day or so till it was finally full. Overall I think it added a little over a gallon to the system.

Here is the part you have to address from the beginning, that is air flow. The two most obvious options are to whether put a fan on it or cut your valance to open up air flow. I chose the latter due to the fact that the truck only gets hot at speed and I like to keep things as simple as possible. If you put a fan on it be sure to check you clearance before mounting it, from the looks a pusher fan will be your only option and that will have to be shorter than the radiator is in order to fit. If you choose to cut your valance I would suggest pitting some sort of screen in it to protect your radiator from debris. I am having a friend at Lake Pleasant Collision make a billet insert for mine so it looks clean.

Gratz you have hopefully solved your cooling issue!



Great write-up, I have been looking at several site trying to come-up with a way to fix my overheater. I live in AZ and like to get out of town and head to the mountains to avoid the heat but always find myself battling to truck. Do you have any pictures of the finish product? also do you have the part numbers for the cheaper radiators you found (forklift) Thanks, Jason:)
 
#25 ·
NO I don't have any PN for the fork lift radiators but if you google "fork lift radiator" you will find them. I dont have any more pics, but if you want to drive to the west side you are welcome to come see it and take your own.

Joe
 
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#27 ·
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#28 · (Edited)
Here is an updated parts list for this project. I have tried to consolidate the sources for the parts needed for this project to eliminate unnecessary running around. This list includes part numbers and prices but is in no way intended to be used as any for of advertisement for any of these suppliers.

Ron Davis
P.N. 10-0662 (radiator, 2 – 6” flanged tubes and 1 ¼” degas fitting) $659.72<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p></o:p>
<o:p></o:p>
<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:eek:ffice:smarttags" /><st1:City w:st="on"><st1:place w:st="on">Napa</st1:place></st1:City> ,
2- P.N. 7694 (90’s) $36.88
4- P.N. 602-1044 (motor mounts) $12.76
8’ – P.N. H-145 (¼” hose for degas fitting connection) $7.92
4 – P.N. 505-1232 (hose clamps for lower radiator hose splice) $4.12
2- P.N. 505-1204 (Hose clamps for degas hose spice) $1.98
2- P.N. 505-1210 (Hose clamps for degas hose splice) $1.98
1- P.N. 10004B-102 (degas splice fitting) $3.33
2- P.N. 10008B-106 (degas splice hose end) $8.88
1- P.N. 3400 x 6 (degas splice fitting) $6.69
1- P.N. 3700 x 6 (degas splice tee) $11.19
4 – P.N. AF-2000 (antifreeze) $53.96 <o:p></o:p>
Total parts form <st1:place w:st="on"><st1:City w:st="on">Napa</st1:City></st1:place> $149.69

Lower bracket $50.00 EST<o:p></o:p>
<o:p></o:p>
Valance Mod $50.00 EST<o:p></o:p>
<o:p></o:p>
<o:p></o:p>
Total $909.41 <o:p></o:p>
<o:p></o:p>
<o:p></o:p>
The lower bracket and valance mod can’t be purchased from a store. Either you have to make them yourself or find a body shop to do the valance and a fab shop to make the bracket. The estimated prices are just guesses based on the time and materials it took me to do them myself. <o:p></o:p>
<o:p></o:p>
Any fab shop should be able to make that bracket using the drawings listed in the DIY. In order for it to fit correctly they will need to make a few measurements of your truck. I did not include some measurements so they would have to do this due to the fact that none of our trucks are exactly the same.<o:p></o:p>
<o:p></o:p>
 
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#29 ·
Here is an updated parts list for this project. I have tried to consolidate the sources for the parts needed for this project to eliminate unnecessary running around. This list includes part numbers and prices but is in no way intended to be used as any for of advertisement for any of these suppliers.

Ron Davis
P.N. 10-0662 (radiator, 2 – 6” flanged tubes and 1 ¼” degas fitting) $659.72<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p></o:p>
<o:p></o:p>
<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:eek:ffice:smarttags" /><st1:City w:st="on"><st1:place w:st="on">Napa</st1:place></st1:City> ,
2- P.N. 7694 (90’s) $36.88
4- P.N. 602-1044 (motor mounts) $12.76
8’ – P.N. H-145 (¼” hose for degas fitting connection) $7.92
4 – P.N. 505-1232 (hose clamps for lower radiator hose splice) $4.12
2- P.N. 505-1204 (Hose clamps for degas hose spice) $1.98
2- P.N. 505-1210 (Hose clamps for degas hose splice) $1.98
1- P.N. 10004B-102 (degas splice fitting) $3.33
2- P.N. 10008B-106 (degas splice hose end) $8.88
1- P.N. 3400 x 6 (degas splice fitting) $6.69
1- P.N. 3700 x 6 (degas splice tee) $11.19
4 – P.N. AF-2000 (antifreeze) $53.96 <o:p></o:p>
Total parts form <st1:place w:st="on"><st1:City w:st="on">Napa</st1:City></st1:place> $149.69

Lower bracket $50.00 EST<o:p></o:p>
<o:p></o:p>
Valance Mod $50.00 EST<o:p></o:p>
<o:p></o:p>
<o:p></o:p>
Total $909.41 <o:p></o:p>
<o:p></o:p>
<o:p></o:p>
The lower bracket and valance mod can’t be purchased from a store. Either you have to make them yourself or find a body shop to do the valance and a fab shop to make the bracket. The estimated prices are just guesses based on the time and materials it took me to do them myself. <o:p></o:p>
<o:p></o:p>
Any fab shop should be able to make that bracket using the drawings listed in the DIY. In order for it to fit correctly they will need to make a few measurements of your truck. I did not include some measurements so they would have to do this due to the fact that none of our trucks are exactly the same.<o:p></o:p>
<o:p></o:p>
Thanks for taking the time to do that, great work
 
#30 ·
Thanks for all the Info!

Total cost adds up fast. I need to do this, but I think I will just order the Rad Mod V2 since it costs about the same. Any reason you think your approach would work better than the Rad Mod V2? Or is it about the same (but you get the satisfaction of doing it on your own)?

Thanks again for the great write up!
 
#31 ·
Thanks for all the Info!

Total cost adds up fast. I need to do this, but I think I will just order the Rad Mod V2 since it costs about the same. Any reason you think your approach would work better than the Rad Mod V2? Or is it about the same (but you get the satisfaction of doing it on your own)?

Thanks again for the great write up!
As I stated in the beginning, if you want a proven, turn key fix, go with the V2. ThxChris has put hundreds of hours testing, and retesting to make sure his fix will work on just about any truck under just about any load. I have only tested mine on my truck under the bigest trailer I had available to me.
Yes, I believe my OH issue has been resolved, but my truck is not stock. I have done many other mods that may have assisted in cooling the truck.

The people that I think would be interested in this fix are the ones who like to and are able to fabricate things themselves and like to be able to say they fixed it themselves rather than just buy somoene else's fix.

There are two reasons I posted the prices in such detail. First it was so people had an accurate idea of the cost before getting into this project. Second was so people could see how little TXChris charges for his product considering all the work he has put into it.

As far as benifit to my system Vs the V2, the only thing I can think of is the fact that every part you need you should be able to purchase locally (unless maybe the radiator if you dont have a radiator shop by you) so if you break something you can just go buy the parts rather than have to order them through someone. I also offer my contact ifno for immedate support with install if you decide to use it. Not sure how easy it is to get ahold of TX Chric.

Hope this helps
Joe
 
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#32 ·
Thanks again! Very helpful! Just wondering if you have since added a performance transmission cooler, an aftermarket radiator, or a supplemental oil cooler?
 
#33 ·
Nope, no need. Since this mod, I have not been able to get my engine or tranny to go over 210 deg.
 
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#34 · (Edited)
I accidentally deleted the picture of the trailer I used to test my truck with so the link no longer works, here is a new link with the pic. Sorry for the error.

http://yfrog.com/2ctrailerafj
 
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#35 ·
quick question.. were you able to put the splash guard back on after the mod?
Thanks
 
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#36 ·
Yes, the splash guard fit back perfectly with no clearance issues. The only item I had to mod was the air dam that diverts air through the two holes in the bumper up to the main raidiator. I trimmed a small amount so it would fit around the top edge of the secondary radiator and lay flat again. It was more for looks than anything. I am sure you could leave it and not trim with no negative affect to performance.
 
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#37 ·
I need this.....Hopefully Engineer837 will still be as helpful when I finally have all the cash together....Heading to Parker/AZ for Labor Day and would have liked to have the secondary cooling system in place.....Hopefully soon....
 
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#38 ·
I can't see into the future but I don't plan on going anywhere. If you need my contact info just PM me. It has not changed in over 10 years and I dont see it changing any time soon.
 
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#40 ·
haha thanks man
 
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#41 · (Edited)
I recently had a question from someone regarding the angle of the mounts on the sides of the drawings I provided. I am sorry they were not included in the drawings, I never had them because I used the foam mock up to get the correct angle. When I handed over my drawings there were a couple variables left to the manufacturer to decide based on the foam mock up I provided. These variables were the thickness (ended up at approx. 3" thick at the caps) of the radiator and the angle in question. The final C.A.D. drawings that have that info are the property of that shop.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p></o:p>
I just measured the radiator on my truck and it looks like the bottom tabs are flush with the bottom of the radiator in the rear and 2" up from the bottom in the front. The mount is approx. 3.5" wide. By drafting a triangle with a 3.5" line connected by a 2" vertical line I was able to place a protractor over it and I came up with approx 32 degree angle. <o:p></o:p>
This should be the angle you are looking for. However, given the fact that all of our trucks are slightly different. If you choose to have someone other than the place that made mine, make yours. I would suggest making your own foam mock up just to make sure your pipe fittings and brackets are all exactly where they need to be. <o:p></o:p>
 
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#42 · (Edited)
Great writeup and I can tell you are an engineer (from one to another) due to the details involved and the excellent documentation (it's pretty rare to get someone to do out a CAD drawing with dimensions to boot). Very well thought out and I'll definately be bookmarking this page! Keep up the great work. :thumb:
 
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#46 · (Edited)
Great writeup and I can tell you are an engineer (from one to another) due to the details involved and the excellent documentation (it's pretty rare to get someone to do out a CAD drawing with dimensions to boot). Very well thought out and I'll definately be bookmarking this page! Keep up the great work. :thumb:
Thank you for the compliment. Although I am not the kind of engineer I think you are talking about (I was a engineer [driver] for my fire department before promoting), I tried to be as specific as possible.
 
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