What are these connections/thread description. I don't want to drop the lines if I can avoid it.http://www.dieselplace.com/forum/uploads/183_connection.png

The connector is by Jiffy Tite. You can call them and find out for sure. I believe it was 5/8" pipe thread. It has been a while since I messed with it, so I wouldn't take it as fact.

Check this post by Mackin, it's got a link to the manufacturer's web site listing the sizes and tools for the connectors:


http://dieselplace.com/forum/forum_posts.asp?TID=13021&KW=Mackin

http://snyder-manufacturing.com/videos/jiffyTiteQuickTime.htm


video link.


So you unscrew the big nut, which exposes the jiffy link?


They say the allison has a 5/8 jiffy tite, meaning 5/8 thread also?

Donot forget they have used two differnt size during the duramax production.

Just to make things difficult! When did they do that? Sized up I assume?

Originals were 1/2" I believe and newer ones 5/8"

Actually both are 5/8, but had a different angle or something. I forget the particulars from when I talked to Jiffy Tite. They had me look at what color the E clip was to determine what I had. I told them to give me the size and I would measure with calipers, and that's when I found the diameters were the same. Call Jiffy Tite and ask them. They were very easy to deal with and get information out of. http://www.dieselplace.com/forum/smileys/Big Smile.gif To find the e clip, find the white cap that covers the fitting connection and pry it off. You will see the wire clip with the white cap down on the line. You can use a small flat blade screwdriver to pry the clip out and the line will then pull out. I always put the clip right back on once the line was out to keep from losing it. You can then just push the line back in and it snaps in place when you are ready to reassemble. Finally slide the white cap back up to cover the connection. I hope this covers your question.Edited by: chuntag95

I have to disagree about the size problem as I have one of the smaller size tranmissions with lines sitting in the shop!

I hope this covers your question.


Very well, thanks.





Diesel Tech, what are you saying? Can you tell what the cooler connections and threads are on that (1/2") tranny?Edited by: masterp2

Looks lie they have always been 5/8" from all indications. Did find this note while looking at the disconnect tool.


http://www.dieselplace.com/forum/uploads/jiffy_note.png


But 5/8" it is for 2001-2004.

What I can tell you is that if you try to use the later lines and fittings they will not fit. I got the transmission not knowing any better and was suprised to find out they were different. The Transmission came direct from GM to me out od a 2001 truck so there is no problem with it, it's just the earliy design. Do as you wish with the information.

chuntag95


You are incorrect with your info.


mike

http://www.dieselplace.com/forum/smileys/Angry.gif


Mike


If you know something, then please spill it.


What is with everyone with all the answers, and nothing (evident) to say?


I know I have asked for information from the members here, and am grateful for those that try and help. It appears you are going out of your way not to.


I have PM'd you on this very topic and you chose not to reply, understandable, but throwing in stuff like this serves no purpose other than to confuse. If that is not what's intended, I apologize. It does appear to be the case.

Steve tells you he has found 2 sizes and mike confirms it. Dosnt sound like anyone is holding out info. Mikes a busy man, cut him some slack, I'm sure he aint trying to confuse you. 530am is way to early, you need some coffee dudehttp://www.dieselplace.com/forum/smileys/Approve.gif

Ratlover, Mike has not confirmed anything, look again!


A blanket statement like:


"You are incorrect with your info." with nothing to support it, doesn't clear up anything, just confuses and creates a haze. We have no idea what information is in reference. Chuntag95 has been very helpful and has been free with his time. I have done the same for many members here, with projects I have done. Time is always an issue.


I provided the only written evidence found to date, above. That probably (maybe) addresses Steve's observation. So as far as I see, the question has been answered, the fitting did change, but I think line size has remained 5/8. If I am wrong, somebody please support it with an observation, a measurement taken, text quote, anything but "no, you are wrong".


Appreciate all the help.

Ratlover, did you drink too much coffee this morning?? Look at Mikes post, he said chuntag95 you are correct.http://www.dieselplace.com/forum/smileys/Confused.gif

Did they,GM, just change the fittings on the Allison?


My lines are 5/8 and in the last 4 years no one has ever reported a 1/2 in ch cooler line that I can recall.





Mac

wheeeww!

Nope, says he is inncorect. But to answer you Q, when i posted I was on my first cup......if I missed anything(witch is entirerly possible) it was lack of, hehe.http://www.dieselplace.com/forum/smileys/Approve.gif


I dont mean to start anything, it just really looks like Steve says he has seen 2 differt sizes or fittings or what ever but the deal is he has seen 2 things that dont interchange. chuntag says no he thinks basicly the same thing but differnt tapers or something. Mike says chuntag is wrong so i would assume he is siding with steve. He didnt retype what steve said so its hard to guess?


Everybody seems to be saying there are 2 and they dont interchange, or is it just me? Maybe i am reading to far into stuff.


No offense ment but....Order some books? Call GM and see what interchanges? Call jifi tight? The net is a great place to find info but I dont always 100% trust it, and if you are trying to design something to sell to people why not do some research and double check some stuff, if you try building something just off of what we say I think stuff is going to be screwed. Your going to have to get dirty eventualy if you go much furthur than this, might as well start now. No flames intendedhttp://www.dieselplace.com/forum/smileys/Approve.gif

Whoops, maybe I need some.http://www.dieselplace.com/forum/smileys/Ermm.gif

There were 3 different size fittings and 2 different size lines, and they don't interchange. There is also 3 different coolers between '01- '04.


mike

Whoops, maybe I need some.http://www.dieselplace.com/forum/smileys/Ermm.gif


No biggyhttp://www.dieselplace.com/forum/smileys/Big Smile.gif


No sleep last night, I'm on number 3 weeeee!http://www.dieselplace.com/forum/smileys/Wacko.gifhttp://www.dieselplace.com/forum/smileys/HiHi.gif

No offense ment but....Order some books? Call GM and see what interchanges? Call jifi tight? The net is a great place to find info but I dont always 100% trust it, and if you are trying to design something to sell to people why not do some research and double check some stuff, if you try building something just off of what we say I think stuff is going to be screwed. Your going to have to get dirty eventualy if you go much furthur than this, might as well start now. No flames intendedhttp://www.dieselplace.com/forum/smileys/Approve.gif





ok, enough is enough. I heard you already. I have already read the equivalent of 5 books on the subject and accessed 10 sources outside this forum for ideas/info. I have been on the phone for 10 or 20 hours total. I even found my old heat transfer and thermodynamics text from Chemical Engineering days, that was nostalgic. i don't have to pull off my cooler to get the answer to a thread or pressure question, I have other uses for that time, including talking to GM and Jiffy-tite, to answer concerns that may never be thought up here. Then there are the estimates, the actual BTU benefits of one cooler vs another. Sizing correctly for optomization of flow AND temperature drop. One without the other is a transmission failure.


Example. Someone might use an AN-6 orifice size equivalent to try to adapt there new oversized cooler, not realizing that they just dropped flow 60%. But all they see is an 80 degree temp drop across the cooler. (Wow that's great!) No, it's not. In this case the extra temp drop is symptomatic of the flow restriction, which is going to fry the tranny.


I could buy 5 different coolers, 3 sets of AN connectors and adapters, 2 pressure gauges, and an infrared temp gun, and do trial and error. I don't need to. That's an expensive and laborious replacement for what I already posess, design knowledge. Of course there will be some verification and possible iteration to get it right on.


I have shifted gears to design a "modular" kit, one that would allow the user to install in the stock location, as well as opt for ALL the benefits of relocation, where practical..Edited by: masterp2

Mike


I assume you are coming up with 3 different (AN-jiffytite) adapter sets?

So I purchase an 02 2500 HD Diesel with the Ally transmission, needed to disconnect the trans cooler line due to a damaged line. Found the fittings on the internet, got to Jiffy-tite, called them, they put me in touch with the company that makes their disconnect tools for them, Snyder Manufacturing. This is what this guy John Snyder told me about the 5/8” fittings.<A name=OLE_LINK1></A>

General Motors changed the 5/8" fitting from a 5/8" to a 5/8" 30% fitting in the 2002 model year - trucks manufactured in 2001 or before have 5/8" fittings, trucks manufactured in 2003 or later have 5/8" 30% fittings. Trucks manufactured in the 2002 model year may have either 5/8" or 5/8" 30% fittings due to the fact that this was a rolling change for GM. Each fitting requires a different tool. He said that the difference between the two has something to do with the size of the flare on the tube and a corresponding difference on the fitting and tools.

Instead of removing the spring clip with a pick or screwdriver you can remove mated lines from these fittings without removing the spring clip with these Jiffy-tite tools. You pull the dust cap off, close a tool over the line, bottom it out inside the fitting, rotate it 30 to 60 degrees (which opens the spring clip) then just pull the mated line out of the fitting. With these tools you can disconnect lines from these fittings in a couple of seconds without removing and replacing the spring clip.

Here is a link to these guys -

<A href="http://www.snyder-manufacturing.com/index.htm" target="_blank">http://www.snyder-manufactu

sorry, it just sounded like you were trying to get all your info from here without doing much research on your own. Like i said I didnt mean to start anything. Just missunderstanding ya.http://www.dieselplace.com/forum/smileys/Big Smile.gif


I'm sure beings you are an engineer by trade you can relate to what I encounter also. What works on paper lotsa times dont work in the field and alot of times other peoples info even manufactures data is F-ed up. One would think people that make the stuff would have a clue about how thier stuff works and its specs but sometimes it isnt the case. Like I said no flames inteneded, I'm sure before you crank these dudes out they will get a rigorus field test by many different subjects.http://www.dieselplace.com/forum/smileys/Big Smile.gif


Good luckhttp://www.dieselplace.com/forum/smileys/Big Smile.gif

This guy at Snyder told me there are actually 5 different size fittings from Jiffy-tite used in General Motors vehicles and now Chrysler vehicles too - 3/8", 1/2", 5/8", 5/8" 30% and 3/4", I guess used for both transmission and engine oil cooling.

Above, masterp2 showed part of the GM application chart from this Snyder Manufacturing’s website, here is a link to the web page with the application charts for both General Motors and Chrysler

http://www.snyder-manufacturing.com/jiffyApplicationCharts.htm

That’s what I know…





Thanks for that information.


Don't forget to mention that only 5/8 is mentioned for the allison, seperately called out.

Yep, you are exactly right masterp2, the GM application chart just indicates 5/8" fitting for the Ally transmission. You have to refer to the note in the center of the application chart on Snyder's website to see if you need a 5/8" or 5/8" 30% tool depending on the year your vehicle was manufactured (unless you have a 2002 like I do, then your fitting may be either). The note you referenced in one of your earlier posts identifies what fitting you will find on your vehicle.


masterp2, do you have a set of these tools?

I am doing a Suncoast stage 3 on Dmax-Dougs '02 Duramax right now and he has the small fittings and half inch lines on his truck.


masterp2


For being an engineer and bragging about your knowlege you have asked questions only a novice would ask. I have discussed cooler questions with a lot of Diesel Place members and have learned some things ( these guys are smart) and their questions are intelligent. You are pumping for information. Bet they would love to read your PM to me ( don't worry, I won't show it.) You say you have been on the phone for hours; with whom? You said you talked to an engineer at Setrab.( busted again) I have a big order with Setrab ( and an exclusive you weasel) and have not spoken to an engineer. You need to know thread size on a fitting; you know how I got that info? I opened my tap and die set and measured it. Maybe engineers are above that sort of thing, ya think? http://www.dieselplace.com/forum/smileys/HiHi.gif You can keep bragging about your prowess and asking stupid questions, and waiting for some idiot to hand you something on a platter. I will just be a simple transmission tech that is always looking for something better and willing to spend my time looking for it. You want my secrets? Buy the damn cooler. Of course, you could choose to build your own on your own.


mikehttp://www.dieselplace.com/forum/smileys/Big Smile.gif

http://www.dieselplace.com/forum/smileys/HiHi.gif

Whoa big boy, what a zinger!! I don't think it's fair for you to keep your feelings to yourself. You are going to get a hernia.


If you can't be civil, then just avoid me. I have no issues with you, but apparently you must feel I have pissed all over your playground, and that's not my problem. But it's good to release!


And BTW, I am a "novice!" But be calm, it's a fleeting condition every time I do something new. Just cover your eyes, it will pass.

http://www.dieselplace.com/forum/smileys/HiHi.gif!

sounds like Mike has tried to side step you............but you keep calling him out. If you don't like his remarks, disreguard them and pump away. At least he "gives" you some information.


Flame away.......... I got my suit on.http://www.dieselplace.com/forum/smileys/HiHi.gif

Wow! See what happens when you miss a couple of days reading? http://www.dieselplace.com/forum/smileys/Confused.gif I appologize for not being aware of a third size http://www.dieselplace.com/forum/smileys/Embarrased.gif but 2 out of 3 is good in baseball. http://www.dieselplace.com/forum/smileys/HiHi.gif

you don't owe anyone an apology, and don't buy into that crap, so far you have been a source of verifiable data, Steve and ratlover and others also.


As far as verifying anything through GM, 5/8 has been the rule. Just because a tranny has 1/2" lines doesn't mean it came from the factory that way. Speculation; if someone got stuck (somehow) with 1/2" lines, (and they restrict flow) could be there is a reason he needs a tranny rebuild/upgrade? I had a mechanic send me off (knowingly) with my boat trailer with 2 out of 5 stripped studs, if I hadn't noticed it, I could have killed an entire oncoming family. Granted those bozo's don't frequent enthusiast forums like this.


I believe these BB pro's do see allisons with 1/2" lines. I will try to find out why as time goes on. So far no luck. But according to some, if I do not tear down 10 trannys per month, I am not worthy of acknowledging. I am not calling out anyone. I have been more than courteous to everyone, and exercised restraint. All my transactions have been informative, friendly, and professional, so no sleep loss here.http://www.dieselplace.com/forum/smileys/Approve.gif





http://www.dieselplace.com/forum/smileys/Geek.gifhttp://www.dieselplace.com/forum/smileys/Geek.gifhttp://www.dieselplace.com/forum/smileys/Geek.gifhttp://www.dieselplace.com/forum/smileys/Geek.gifhttp://www.dieselplace.com/forum/smileys/Geek.gif


In high school, this guy got beat up frequently, as we all watched. Those people never really change, they just find new victims.

As far as verifying anything through GM, 5/8 has been the rule. Just because a tranny has 1/2" lines doesn't mean it came from the factory that way. Those people never really change, they just find new victims.








Hey, mine are 3/4 of an inch.. I guess that makes it 4 different sizes.

Masterp2


I have given you more than book information, I have given you what I have found and seen in these trucks. If you choose to believe me or not that's up to you but your beginning to sound like a broken record. Take this how you will but it's time for you to get off your a$$ and do some field work. If you are an engineer as you say then you know just what I mean. No one is going to do the work and hand it to you on a silver platter. Your either doing Research and Design or Ripoff and Duplicate! It's sure beginning to sound like the latterhttp://www.dieselplace.com/forum/smileys/Disapprove.gif

Your either doing Research and Design or Ripoff and Duplicate! It's sure beginning to sound like the latterhttp://www.dieselplace.com/forum/smileys/Disapprove.gif





duplicate what???????


You all enjoy the feeding frenzy, I'm tuning out. I'll be solving for x. This has gone far enough for me. If anyone has been genuinely offended by this thread....


get a life.

Are the fittings pressed or screwed into the transmission? I'd have a look see but my truck is over 200 miles away right now. If they are screwed in I would standardize any after market coolers and lines to the larger size and build a one size fits all cooler w/ the larger lines and fittings in the kit if needed. Those with smaller fittings in the trans would need to install the larger ones. Wouldn't this be simpler than stocking all the different sizes. Just a thought.

Srew in.





Mac

master2p


I talked to Setrab today and your name came up. They told you to call me and you declined. Why? I know which cooler you want to use, and you know what? It's a little better than the one I chose. Problem is, who is going to install it? I looked at that model and decided against it because of the install problems. My cooler ( did they tell you which one? if so please post it) will drop in. I will sacrifice a couple of degrees for simplicity and the fear that someone might really make a mess of a cooler install and sacrifice factory warranty and burn up their transmission. That is why I chose to have the cooler made with the proper fittings and not use adapters. Nobody is stopping you from doing the same and I wish you luck, but you have to work for it like I did. You say you gave us information; you gave us machinations and a lot of questions. Here is an idea; take your truck apart a bunch of times and keep trying to get it right and something good may happen. As far as getting beat up by the local bully; I am not your bully. I can not stop you from jumping in front of trucks and getting run over, only you can.


mike

i'll take the drop in version myself...adapters are for univeral applications....and they usually appear to be universal, i.e. sub par.

Just another opinion.





Any alterations to the Allison cooler "can" void the warranty repair and or it in it's entirety.


Also today many of us are altering our fuel system that "can" be viewed as sub par by GM. The only drop in available would be if a spin on could go in the stock location.


Other wise in comparison it is far from drop in. Many are cutting the lines removing lines and using fittings galore. Sub Par? Not hardly.


This may also void warranty repair and or in it's entirety.


I hope Micheal has success because options are good.





Mac http://www.dieselplace.com/forum/smileys/Hug.gifEdited by: Mackin

Eric,


Any idea why GM went to the larger lines? Was there a sugnificant restriction/cooling problem with the smaller ones.

Just do it! Like Mac says..............Get her' done!





later,


BurnerEdited by: Burner

where is this post going? and who is mad at who? I'm lost on this one.





Tom

Hey, mine are 3/4 of an inch.. I guess that makes it 4 different sizes.





Are you measuring the inside diameter or the outside? I think (don't know for sure) that the sizes are ID, so a 3/4 OD would be ~5/8. When I did my cooler, I used AN-10 fittings (which are 5/8 ID) to make sure I didn't restrict flow at all.

duplicate what???????


You all enjoy the feeding frenzy, I'm tuning out. I'll be solving for x. This has gone far enough for me. If anyone has been genuinely offended by this thread....


get a life.








If it looks like a Duck, talks like a Duck and acts like a Duck....................

The only thing that is different with this vs a fuel filter add on is just that, we are removing a stock component and replaceing it with a different one. I suppose there isnt much difference, but apples to apples.....


Tommy, I dont know what the deal is on that, from what I understand, the biggest difference is the fittings and the end of the line.. I guess I havent looked long and hard enough at different years side by side to know more.


I suppose the important thing is in the end is if it works or not. Sounds like both options are viable.