Boost problem
03-27-2009, 07:49 PM
#1
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Boost problem
well this is the problem.. my gauge reads just fine but i don't feel that jerk from the "force"..
i had taken the manifold off due to the fact that it was cracked.. had it welded.. and put back on... and now it doesn't boost.. like i said gauge reads fine, but there seems to be a leak... seems like when it boosts, it just gets dumped out of the wastepipe... HELP???!!.. anything will help.. do i need to replace gaskets??.. find leaks??... what is the most efficient way to find the leaks... ??
i had taken the manifold off due to the fact that it was cracked.. had it welded.. and put back on... and now it doesn't boost.. like i said gauge reads fine, but there seems to be a leak... seems like when it boosts, it just gets dumped out of the wastepipe... HELP???!!.. anything will help.. do i need to replace gaskets??.. find leaks??... what is the most efficient way to find the leaks... ??
03-28-2009, 07:13 AM
#2
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Re: Boost problem
Search "boost leak". I had a leak too, and I found a thread that someone posted up how to make a homemade leak tester from Home Depot items. Works pretty good too, I found THREE leaks in my system.
03-30-2009, 07:33 PM
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Re: Boost problem
i've found a few ways to do the test.. whats the easiest?? and what do i need to plug up/block off, if i use pressure to the end of the intercooler up??... making sure i don't blow anything while i'm doing this test....
03-31-2009, 06:07 PM
#6
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Re: Boost problem
The most effective way is to start at the compressor inlet. Here is how I made mine...
First, I took a 2" PVC end cap (Home Depot), drilled and tapped a hole for a pipe nipple (I used a 1/4:18 tapered pipe nipple), then added a male connector (like found on impact wrenches). Then I took a female connector, and added it to 3' of hose. Then, I added a valve stem to the other end for my air supply, and clamped it to seal the air in.
If your turbo compressor is an E housing, use a 2.5" silicone coupler (they flex better), and push the end of the end cap into it, and hose clamp it so its nice and tight. Take the other end of the silicone coupler, and wiggle it on to the compressor inlet of your turbo, and hose clamp that as well so the whole thing doesnt leak. (if you have an S over, you'll need a 2.5" to 3 or 4" reducer coupler)
With the car off, connect the hose connectors together, supply air through the hose, and watch your boost gauge (8 to 10 psi will do). Disconnect the air supply, and listen for leaks. Real simple, but real effective! ;-)
First, I took a 2" PVC end cap (Home Depot), drilled and tapped a hole for a pipe nipple (I used a 1/4:18 tapered pipe nipple), then added a male connector (like found on impact wrenches). Then I took a female connector, and added it to 3' of hose. Then, I added a valve stem to the other end for my air supply, and clamped it to seal the air in.
If your turbo compressor is an E housing, use a 2.5" silicone coupler (they flex better), and push the end of the end cap into it, and hose clamp it so its nice and tight. Take the other end of the silicone coupler, and wiggle it on to the compressor inlet of your turbo, and hose clamp that as well so the whole thing doesnt leak. (if you have an S over, you'll need a 2.5" to 3 or 4" reducer coupler)
With the car off, connect the hose connectors together, supply air through the hose, and watch your boost gauge (8 to 10 psi will do). Disconnect the air supply, and listen for leaks. Real simple, but real effective! ;-)
Last edited by Silva Bullit DC4; 04-02-2009 at 11:53 AM.
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