Question About Boost...
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Senior Member
Joined: Feb 2002
Posts: 6,331
From: Frederick MD
Originally Posted by rotary speedster' date='Mar 19 2003, 03:13 PM
I think it has got to be a leak. Or either operator error with the boost controller installation/operation. 
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Joined: Jul 2001
Posts: 17,839
From: NJ
Originally Posted by 9BASE3' date='Mar 19 2003, 04:08 PM
[quote name='vosko' date='Mar 19 2003, 03:02 PM'] its no big deal as long as he can take a joke....... heh
what year TII is it ?
what year TII is it ?
if its 89 tell him not to blow it up and if he does blow it up i'll buy it off him
Senior Member
Joined: Sep 2002
Posts: 525
Tell him to look at the wastegate, and make sure that is is not overly ported, so that the opening goes past the closed door. Also have him hook a pressure/vac pump up to the actuator and check for movement. It could be a restrictive intake, but it sounds like a boost leak. Have him try this:
I've found that the easiest way to find boost leaks is to take some soda cans or tennis ***** or anything of the like, and put them in the intake hoses(from the airbox to the turbos). Clamp the hoses tightly around the cans. Next, get a blower nozzle for an air compressor that can have a vacuum hose slip on. Put the vacuum hose on the blower nozzle at one end and an intake nipple at the other end. Tighten the vacuum hose down with hose clamps at both ends. Turn the car on(not the engine though). Now lightly blow air into the intake with the blower. The air will have no where to go except where the leak is
If he finds a boost leak, make sure he doesn't go out and hammer the **** out of the car as soon as it's fixed, because the motor probably won't like all that boost.
I've found that the easiest way to find boost leaks is to take some soda cans or tennis ***** or anything of the like, and put them in the intake hoses(from the airbox to the turbos). Clamp the hoses tightly around the cans. Next, get a blower nozzle for an air compressor that can have a vacuum hose slip on. Put the vacuum hose on the blower nozzle at one end and an intake nipple at the other end. Tighten the vacuum hose down with hose clamps at both ends. Turn the car on(not the engine though). Now lightly blow air into the intake with the blower. The air will have no where to go except where the leak is
If he finds a boost leak, make sure he doesn't go out and hammer the **** out of the car as soon as it's fixed, because the motor probably won't like all that boost.
Senior Member
Joined: Nov 2001
Posts: 1,234
From: Rochester, NY
Did he somehow fit some huge compressor on it? I can see the stock hot side not wanting to spool a large compressor up very high.
That doesnt seem very likely though. I'd check out what everyone mentioned above.
That doesnt seem very likely though. I'd check out what everyone mentioned above.
Senior Member
Joined: Sep 2002
Posts: 658
From: I'M RIGHT HERE!!! in Toronto
OK he upgraded the turbo and ported the wastegate. . . what about the spring rate in the gate? If it hasn't been increased it's not going to hold more boost.
Which wastegate is it? I've had some trouble with some of them not having stiff enough springs to hold much over 10psi, just for a heads up.
Which wastegate is it? I've had some trouble with some of them not having stiff enough springs to hold much over 10psi, just for a heads up.
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