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Old 08-22-2007, 11:35 PM   #101
piekarski17
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vice grips worked for me
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Old 08-23-2007, 12:25 AM   #102
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OP, did you use PVC primer on your design?
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Old 08-23-2007, 10:23 AM   #103
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Anyone have a part number for this cap?
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Old 08-26-2007, 05:47 AM   #104
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Quote:
Originally Posted by piekarski17 View Post
vice grips worked for me
Well... There are 3 hoses attached to the inlet pipe, all with fairly rigid tubing which I was a bit afraid of somehow damaging with vice grips , did all need to be clamped/plugged?

Some say all, others say none.

It's a brilliant idea though, it's stuff like this that keeps me coming back to this forum
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Old 11-20-2008, 03:57 PM   #105
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Bumping an good thread.

Do you have to cap out the hard line coming from the BPV to the Turbo inlet pipe too?
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Old 11-20-2008, 05:16 PM   #106
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how do you find the leaks?
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Old 11-26-2008, 07:38 PM   #107
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Quote:
Originally Posted by Vlad View Post
Sorry to resurect, but did this today and got a humming/buzz from the evaporative system purge valve, that small capsule located in front of the intake manifold, by the back of the alternator.
Did anybody else get that?
Also, I did not think the pressure rised above 2 PSI.
What I did not understand is how do you guys prevent air from leaking past the throttle body. Depending where the engine stopped, valves could be open and the air could just end in the exhaust, no?
Please help me out.
Vlad
i heard the same sound. its like a hissing sound. im wasnt sure if it was a leak or what. when you start to fill the tester with air, it wont hold pressure and sounds like its letting alot of it out somewhere. but i cant figure out where

Is it a leak, or just something i'm forgetting to plug up?
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Old 04-03-2009, 07:26 PM   #108
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I have a dumb noob question... I want to do this... but how do you see the pressure? I mean, where is a gauge? Or are you doing this with the engine running and with a boost gauge or some type of like ECU or RomRaider logging setup?

Or do you pump air into this setup with a compressor and see where your leaks are with the engine NOT running?
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Old 04-03-2009, 09:06 PM   #109
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lol..yeh thats a pretty noob question but i wont bash on u..you pump air into it like you would for your tires..i dont think it would be wise to turn the car on with that on
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Old 04-04-2009, 03:20 AM   #110
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Quote:
Originally Posted by jcbluescooby View Post
lol..yeh thats a pretty noob question but i wont bash on u..you pump air into it like you would for your tires..i dont think it would be wise to turn the car on with that on
Haha thanks for not knocking on me. I went ahead and bought everything I need at Home Depot. Gotta find someone with an air compressor now, or maybe a bike pump haha. What works best to plug the 4 things coming off the turbo inlet hose, or do you leave those on? And do you plug up the other end of the inlet hose, or let the air go through the turbo? Sorry I'm such a noob I just don't wanna screw anything up and someone told me if I put 20psi of air it will go into my valves, etc?
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Old 04-04-2009, 01:33 PM   #111
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lol..its gotta go through the turbo inlet nipples and turbo to get through the other stuff in the motor/exhaust..im pretty sure thats what needs to be done but i guess wait for another person to confirm this
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Old 05-11-2009, 11:10 AM   #112
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Do not put 20 psi through your inlet!!!!!!

I just talked to my tuner and he says that that kind of pressure will kill turbo bearings. He said using this equipment, the max you should put to the system is 2-3psi.
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Old 05-31-2009, 04:38 AM   #113
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Going to try this....
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Old 05-31-2009, 05:45 PM   #114
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Tried this on a 2.0L WRX last weekend. Works wonderfully. I only had to use 12psi, and a bottle of soapy water to find any leaks. Sprayed the soapy water on all joints that are supposed to hold PSI, any leaks were clearly evident by the soapy water starting to FOAM like crazy. 20PSI probably isn't necessary. If you drill a big enough hole for the tire valve to push all the way thru to the ridge, you won't need to use silicone since it will seal itself much like it would on a car rim. Another tip: PVC cement isn't needed to hold the cleanout adapter to the elbow... at 12psi, it wasn't anywhere near popping off and sealed well.

OP & Jorge: Thanks for the info, it was very helpful
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Old 06-01-2009, 03:28 AM   #115
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Quote:
Originally Posted by Meatbawl View Post
Tried this on a 2.0L WRX last weekend. Works wonderfully. I only had to use 12psi, and a bottle of soapy water to find any leaks. Sprayed the soapy water on all joints that are supposed to hold PSI, any leaks were clearly evident by the soapy water starting to FOAM like crazy. 20PSI probably isn't necessary. If you drill a big enough hole for the tire valve to push all the way thru to the ridge, you won't need to use silicone since it will seal itself much like it would on a car rim. Another tip: PVC cement isn't needed to hold the cleanout adapter to the elbow... at 12psi, it wasn't anywhere near popping off and sealed well.

OP & Jorge: Thanks for the info, it was very helpful

Did you keep the oil cap on? how about the PCV valve? what year 2.0 WRX? I had my oil cap off, and I am thinking all the PSI I was trying to push through kept going out the oil cap...my gauge wouldn't hold a reading...
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Old 07-12-2009, 02:45 PM   #116
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Quote:
Originally Posted by thebloodRS View Post
Do not put 20 psi through your inlet!!!!!!

I just talked to my tuner and he says that that kind of pressure will kill turbo bearings. He said using this equipment, the max you should put to the system is 2-3psi.
is this true??
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Old 07-12-2009, 02:54 PM   #117
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Quote:
Originally Posted by 05wrx09 View Post
Did you keep the oil cap on? how about the PCV valve? what year 2.0 WRX? I had my oil cap off, and I am thinking all the PSI I was trying to push through kept going out the oil cap...my gauge wouldn't hold a reading...
Kept the oil cap on... had all the lines that come from the intake inlet capped off... can't remember if I pinched the PCV line though. It's an 02 WRX.

Quote:
Originally Posted by gopsu View Post
is this true??
I don't know... but I do know that I only had to run 12psi max to find leaks... and my car is doing fine. I wouldn't do 20psi just because it's unnecessary. Better safe than sorry if it does damage something. My .02
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Old 07-12-2009, 06:54 PM   #118
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bump for a smart little tool
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Old 07-12-2009, 09:59 PM   #119
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Guys, I performed DIY bost leak check, but never got to manage to build any boost. I capped off all lines off of turboinlet except BPV line. Any idea why?

I used $20 tire inflator...
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Old 07-12-2009, 11:22 PM   #120
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There are two categories, with no good explanation. Some cannot build pressure, no matter what and some never have problems building pressure.
It doesn't mean that there's something wrong with your car.
Someone narrowed it down where the air was just coming out of the exhaust, although he separated the intercooler from the engine, suggesting that air might go through the compressor housing into the turbine housing and out the tailpipe.
Since you have to separate all the other pipes on the inlet, you're testing the turbo, inlet, intercooler and manifold.
I think that the way a compressor works is by pressure zones, low pressure around the inlet and high pressure inside the compressor cover. I don't think that the area under the compressor wheel gets pressurized much during normal operation. When you hit it with compressed air, if some escapes by the bearings, it doesn't mean anything.
I think that in the future I'm going to test them separately and possibly skip the turbo alltogether, I think it's better that way.
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Old 07-13-2009, 12:04 AM   #121
wrxsti.l
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How did you hook it up? Basically, you want to test all the post-turbo hoses/connections from compressor out to throttle body. Sorry for simple explanation, but you want to disconnect the hose from turbo compressor out and place the thingy in, then disconnect the hose to the throttle body and plug it and test.

Then once all the post-turbo hose/connections are tested and all leaks are fixed, remove the test thingy and the plug and put the hoses back on the throttlebody and compressor and tighten them up properly, because they are the only two places you can have an air leak now (not inlcuding pre-turbo piping/connections).

Here is a nice youtube vid showing how to make the test thingy and test for leaks:


Last edited by wrxsti.l; 07-13-2009 at 01:47 AM.
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Old 07-13-2009, 01:34 AM   #122
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bookmarked!
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Old 07-13-2009, 06:02 PM   #123
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no one has answered this question -> is it necessary to cap off BPV line?

also, anyone knows PN of WRX TMIC elbow gaskets (x2)?
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Old 07-13-2009, 09:08 PM   #124
wrxsti.l
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BPV should remain closed until 20-26psi depending on which BPV you have. So it all depends on what pressure you test at. If you want to test at pressures over 20psi, I'd say cap it off to ensure it doesn't bleed the pressurised air out while you are testing.
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Old 07-13-2009, 11:02 PM   #125
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bump
bump
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