2nd Gen Non-Engine/Transmission How to pressurize the intake to find leaks

[Dan_69GTX]

What have you done to pressurize the intake system to check for leaks in the intercooler, hoses, intake gaskets, etc?



Did you just make a boot to hook onto the turbo hose and connect that to a regulated air source?



Thanks!

Dan

 

[Dan_69GTX]

Here's the answer - from strick-9



Thanks!!!!!!!!



I went to Lowe's Home Improvement and went to the plumbing aisle. I found a 4" x 3" rubber boot. I plugged it with a 3" pvc cap.



I drilled and tapped the pvc cap for my air hose connection and that's it. Of course you'll need two clamps. One 4" clamp for the turbo inlet and one 3" clamp to keep the pvc cap from blowing out of the rubber boot.



I have a small air regulator with a gauge on it that I use to adjust pressure. But it's not needed. It takes too long to drop the air pressure in the shop down to 10-15psi so it was just quicker to add another regulator right at the turbo adapter. They are only about $15 at your local hardware store.



You shouldn't need more than about 10 psi to find your leaks. Hope that helps.



-Chris

Relentless Diesel Performance

 

[C Schomer]

I made some plugs on the lathe at work a few yrs ago and put fittings in one of them for the air and gauge. I found out how tight the clamps need to be especially on the hot side! Yes, 10psi showed most of the leaks but 30 showed some more very small ones. I only tested the intercooler and boots. Then I tightened all the intake cover bolts - some were a bit loose. Be careful if you use plugs - I think somebody got bopped pretty hard when one blew out! Craig



It sounds like strick9 used a "mission coupling". I don't know how much psi. they can take. 3" black iron, pvc and soil pipe all measure 3. 5" od.