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I haven't received any from you yet. : on where you got that information because I had my friends that are engineers for Garrett search the build number and come up empty handed. It was after the thread was a few days old, so maybe you did not see it. Your turbo's sound pretty good and it would be nice to find out if they are avalible through Garrett's aftermarket program. Yeah, the thread got a few days old, but even scrolling through my old msgs, I don't see any references - that thread was moved from gen to tech, maybe we lost something in the transfer. I *don't* know if its available as an aftermarket Garrett turbo. I just know some of garretts literature referred to the turbo as the tb028, and it has basically the same specs as the sport 650 - My particular version had the .64 housing, not the .86 though. Also, I *think* the GTI-R turbo is a shave bigger than the 650 and t28. I don't have any #'s on it : The reason why the motors blow with fake T28's is that the compressor is so inefficent that it takes a lot of shaft power to produce boost, power that the turbine has to recover. Since the turbine is not in the design housing either, it's efficency is also somewhat down but not as bad as the compressor. : Since the turbine has to work so hard, the backpressure builds up and you get reversion of exhaust gas through the motor on overlap. Since engines get a lot of there internal cooling done on overlap and instead of cool intake charge, you get a backflow of hot exhaust, the engine gets hotter and hotter until it gets into a detonation cycle and burns down. I have measured over 50 psi in the exhaust manifold with these sort of turbos on a dyno before. : The fact that the poor compressor efficency also pumps close to 300 degree air into the motor at high boost levels does not help either. It is not exactly just that the turbos run hot, unless this is what you mean when you say running hot. I think it's more like the turbo's won't let the motor get rid of heat. By 'turbo blowing hot' I meant roughly what you say - but I think you bring a valid point that the hot side's restrictions are a large contributing factor - But considering *both* sides of the turbo are getting heat soaked and running outside of their normal temp ranges, its easy to understand how the turbo self destructs after a few thousand miles. : Anyway, I think we are saying the same thing. I think the closest thing to what we discribe as a T28 that you can easily buy is a Pulsar GTI-R turbo, Nismo p/n 14411-RR581 or a JWT Sport 650. E-mail me, man - It'd be faster and we could fill half the forum shooting turbo-talk back and forth. Love to hear your input on a few turbo models though. Of course, your address will remain confidential.
 MikeeZ
Twin Turbo, Almost BPU Funny TT.net quotes:
OK, well I've heard that 9 inches is a good size - F8IZHIS 10/09/01 02:47:48
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