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Registered
Join Date: Aug 1999
Location: port st lucie/stuart florida
Posts: 366
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no/low boost, please help
I am having problems, A friend and I made some headers for my 76 turbo and then i put a correctly sized garrett to4e turbo on my car, I have very little boost(<5 lbs @ 6k), there is a small but very minor leak in my exhaust, no leaks in my intake tract, and the wastegate is closed, i even took off the vaccum line to the wastegate. The turbo is brand new. The headers are 1 5/8 primarys and 2 1/2 secondarys.Is there a possibility that the turbo is bad??? Any ideas???, i have been messing with this for a week now and want to start beating something
 PLEASE HELP 
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04-27-2002, 11:11 AM
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Join Date: Dec 2001
Location: MA USA
Posts: 2,938
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Fix the exhaust leak.
Dean |
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04-27-2002, 06:39 PM
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Yes, fix the exhaust leak but I'd also take a look at the wastegate. It's one of the most likely places for boost problems to originate. If everything else checks out, pull of the wastegate and check the diaphram.
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Bruce Herrmann 97 C4S '04 330i '08 Cayenne S '07 4.8 X-5 |
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04-27-2002, 06:43 PM
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You do not have permissi
Join Date: Aug 2001
Location: midwest
Posts: 39,971
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Just a thought, if the headers are massive, there might be less inertia built up in the exhaust stream to spool up the fan. I don't think that would be the area to enlarge.
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04-28-2002, 03:43 AM
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Join Date: Jun 2001
Location: Sweden
Posts: 5,911
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99% chance wastegate-piston is leaking...take off the wastegate and take a look...alse, check out intake for leaks, you might be making boost but it all leaks out,
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Thank you for your time, Last edited by beepbeep; 04-28-2002 at 04:14 AM.. |
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04-28-2002, 04:11 AM
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1973 Porsche 911S 2.4S 
