http://www.threeriversdent.com/coldairmod.html

check it out...

Neat idea... I have the mega fuel filter -- not an option for me...

Neat idea... I have the mega fuel filter -- not an option for me...
Seth - does that block the passage for the tube ?

Good ol' American ingenuity! :D It will be interesting to see how well the dryer vent tubing holds in place using electrical tape under high speed conditions. There is an incredible amount of turbulence under the hood while driving at high speeds. ;)

I'm not a big fan of electrical tape for strapping things down, especially things that move and in outdoor conditions. If it doesn't hold try getting some of the metal tape the A/C guys use to seal/hold ductwork together. It may hold up to moisture and heat better. Good luck! JJ :)

Good ol' American ingenuity! :D It will be interesting to see how well the dryer vent tubing holds in place using electrical tape under high speed conditions. There is an incredible amount of turbulence under the hood while driving at high speeds. ;)

I'm not a big fan of electrical tape for strapping things down, especially things that move and in outdoor conditions. If it doesn't hold try getting some of the metal tape the A/C guys use to seal/hold ductwork together. It may hold up to moisture and heat better. Good luck! JJ :)JJ - The tube isnt strapped anywhere, really. Its just resting in the bottom of the OEM air box belly. The band clamp is whats keeping it inside the belly.
Your right, though, there is ALOT of action going on in there when We're not looking:D I posted some initial tests on another thread, in the performance forum... regarding how much vacuum is actually gained. And after thinking about it, I think that might be a problem.

Ill monitor the tape and report back in a few days. thanks for the tip on the HVAC tape!!

Mega filter is attached to the air box tray...

Cool idea ! Let us know how it works out.

I wonder if you could use some PVC drain pipe(the big stuff) to install on the air box and then clamp the dryer hose to the PVC or maybe run PVC all the way. Just an idea, don't know if it would work or not.

Cool idea ! Let us know how it works out.

I wonder if you could use some PVC drain pipe(the big stuff) to install on the air box and then clamp the dryer hose to the PVC or maybe run PVC all the way. Just an idea, don't know if it would work or not.
The idea started with 4" PVC piping... but its heavy and once formed/glued it doesnt move.... the dryer tube seemed more logical for trials anyways. I have it installed and will make some ghetto runs on the "butt" dyno tomorrow.):h

did the same simalar thing to a 2001 dodge 2500 cummins be fore trading for a duramax. you should feel a big a increase in your accerleration turbo spin out from a dead stop . diesel engines are much happier when they get a lot of fresh air . never had a problem with water or anything else getting in as a decent air filter will stop it. i do believe i will consider your ideal as a possible mod for myself if you don't mind.:) as the saying goes a happy engine is a happy owner.

Water would be a big concern here. Yes the filter will stop it till it get soaked up with water. Then it will go through likes its not even there. Get idea though and I hope it works out.

Greg

Water would be a big concern here. Yes the filter will stop it till it get soaked up with water. Then it will go through likes its not even there. Get idea though and I hope it works out.

Greg
Greg Im with you on the water concerns... but check this out....

Have you ever tried putting a rag over a shop vac to catch drywall sanding dust? The rag.... very wet and very thin.... dries in under a minute.... now the possibility of the OEM filter gettins soaked is real... but the intake tube down by the bumper would almost certainly need to be in a bucket of water to get the filter even remotely moist. And the amount of ambient intake should dry the filter before it saturates. But your right the concern exists... so lets look at a little water indeed getting through the filter. Where is it going? Its mixing with super hot charge pressure air from the turbo...Wouldnt this miniscule amount of water almost act like a water injection that cools the charge pressure intake that much more? I know nothing about water injection... but I know water is injected into the combustion cycle SOMEWHERE in the process. I would need someone well versed on that aspect to comment....


Its rainy and sh$%ty here in Pitsburgh today... Im going to do some short runs aiming for puddles and such... then checking the setup for stabilliity as well as water draw into the filter. Will post back this evening.

You're brave! Good luck though, seems like a good idea if it works.

Dan

Where is it going?

Im going to do some short runs aiming for puddles and such... then checking the setup for stabilliity as well as water draw into the filter. Will post back this evening.
It depends a lot on what you are using for a filter, too. One of the big issues for the removal of the fender snorkle from the early 2001s was that there was enough spray generated in the void between the steel fender and plastic liner where the aibox pulled that the paper filter element would get wet enough to lose strength and collapse under suction to be sucked into the turbo and munched up. You have a run of low pressure, low temperature and high suction air between the airbox and the eye of the turbo. You sure don't want to pack it with a collapsed wet airfilter element!! Have you ever caught the edge of a rug with that shopvac? You won't be able to just grab on to the corner of your disappearing air filter and pull it out! You should know you have a problem when the MAF throws a code and you can hear the turbo wheezing.

Very interesting. I think the turbo would have a hard time sucking much water up the tube unless it was raining cats and dogs (I mean thick stuff). As long as the tube didn't have a flat spot inside of it where water could collect and sit. If this was the case I would put a low bend in the bottom of the tube and drill a few small holes in the bottom so it would drain, but wouldn't be enough to defeat the purpose of the cold induction. As long as the bottom end of the tube is on a slight angle down or pointing down, I don't see that there could be much of a problem. Maybe it could be tried with a K&N (for testing) so incase it does get wet (extreme case), the turbo wouldn't suck it in. Just my 2c. Good idea though! Good luck on the tests. Keep us informed on the results.

Yes I agree the rag drys quick. But if you are in a rain storm doing 60mph you are going to always be getting water. As long as the filter stays intact it should atimize the water enough to prevent that. I hope I am wrong because it looks to me like its a good mod. But I have my Espar heater in that stop so I can't use it.
What if you were to point it backwards? It would still be fresh cold air.

Greg

UPDATE

Okay here is some initial testing results ghetto style!!!

1 - the butt dyno says no improvment... but the temps here today are 37 and rainy/sleety. This mod would do better tested on a hot summer day with engine compartment temps thru the roof. I think there would be an improvement just from the cool air drawn in... aside from the "ram" air theory.

2 - I did a short city street test... ran about 10 blocks pulled off and removed air box to check for moisture... Bone dry):h

3 - Went out on the highway... from Robinson twp to Rt 51 south for the locals, proabably about 6 miles of good highway 65-75 mpg driving. I turned off Overdrive to keep rpm's high - more intake request - followed....of all things a 2500HD couldnt ttell if it was a D/A or not... but followed REALLY close to get all that highway spray flowing. Pulled off the highway at rt 51 and immediately turned off the engine.. didnt want the intake to dry any water off the paper filter... removed the air box, the whole pass. side was wet, including the rad core resivior, the air box, fender edge, and a little water on the air intake plenum post filter.... when I opened up the box and checked the filter.... BONE DRY!!:ro) :ro)

I reached down as far as my arm would go... looking for trace amounts of water on the dryer tube and it too was dry. I reached up from the bottom of the tube... it was very wet, and continued to be wet for about a foot up then stopped. The tube is not in the "ram air" position though, it is resting behind the plastic OEM bumper valance. I think that in the RAM configuration.... the inlet tube facing the oncoming air either behind the tow hook hole or cut out of the factory fog light area, that water could make its way up the tube, just from the ram force. I think the fact that the dryer vent is corrogated actually helps prevent water from getting up there, a smooth wqall would allow water to scoot right along, kinda like a few drops crossing your windshield at 70 mph.

Final thoughts.... test is successful in that the tube works providing superior air delivery, provides no moisture at moderate rain intervals....cant be sure with a torrential downpour though. ):h

Actually once the filter gets soaked it will severely limit airflow. I would think that would be the only problem, but how do other ram air intakes get around such issues?? ie TA WS6's .... ??? ANYONE, ANYONE, BUEHLER, BUEHLER?

I like SD's idea of putting some perforations in the inlet tube, maybe on the side that is away from the wheel well where most of the water is going to be spraying in a storm. This may provide enough cross-suction and volatile air movement to interrupt any sizeable amounts of water from getting up the pipe. :rolleyes:

Might even place a couple of vent holes just below the intake casing and let it draw air in there as well for a break point from positive suction from below. Dentman, did anything move around or come loose during your drive? Did you cover any bumpy terrain to check structural integrity? JJ :)

Might even place a couple of vent holes just below the intake casing and let it draw air in there as well for a break point from positive suction from below. Dentman, did anything move around or come loose during your drive? Did you cover any bumpy terrain to check structural integrity? JJ :)
JJ - the factory inlet is still open, so my setup is not a sealed system... I thought about closing it off, but felt leaving the OEM in place, I could test the water penetration theory first.

Nothing moved during the testing.!! I was pretty stoked about thetesting results. I did not cover bumpy terrain... other than pittsburghs crappy roads!

more testing to come.

Anyone ever just take that foil off the inner fender that is in front of the air box opening? Seems that alone would let alot more air in!?

Anyone ever just take that foil off the inner fender that is in front of the air box opening? Seems that alone would let alot more air in!?
Redneck, the foil is covering the hole where the airbox opening was connected to that space by a snorkle tube that admitted water to the airbox. It was removed and blocked to stop verified water suckage - removing the foil would open you up to proven and guaranteed water intrusion. :badidea:

Have you ever caught the edge of a rug with that shopvac? You won't be able to just grab on to the corner of your disappearing air filter and pull it out! You should know you have a problem when the MAF throws a code and you can hear the turbo wheezing.thanks for the advice chatter:eek: Im just exploring ways of having a little fun with these trucks. I sure dont want damage on mine, yours or anyone elses for that matter. I post what little Ive figured out hoping to help others as they have helped me. :D

Not to discourage your experiment and people going out there and trying things out is what's making our trucks better and better and this forum a great place to exchange information. Just offering some cautionary advice and not meaning to disparage or condemn your efforts. Glad you're pushing the envelope, glad to see that it's not causing a problem for you!

thank you!

update on the ghetto mod.....250 miles

No unusual intake dirt patterns on the filter.... still dry.

collar as described in install still in postition... tube hanging down behind front bumer still sitting where I left it

temps have no noticeable change

mileage verdict still out.. I did the predator same tank as the intake... doubt there will be an improvement though.

after 15years as a big rigger in every type of weather thats possible coast to coast, most new style air intakes are from the windshield side being about 20 inches from the air filter. i have never had a problem with water getting to my air filter.:) now if the air is going in from below and has to travel up the chance is that very little will reach the filter let alone the turbo. as stated in my last remarks i did the same type of thing in a 2001 dodge cummins drove it for about 2 years in northern wi. and never had a problem. but had a much improved accleration response that can be felt right away.

got red of the cummins because they were to noisey :mad: