2nd Generation Specific 1986-1992 Discussion

Wastegate Fixed!one!

Old 01-02-2004, 06:38 PM
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ok i guarantee NO ONE has ever done what i did to fix my wastegate problem (INSANE amounts of boost creep as if the wastegate wasnt opening)



i was changing my oil and filter today and looked at my drivers side engine mount. when something struck me and i looked closer. the nut and washer holding the mount to the frame/car left a trail of movement in some grease that had built up on the mount. this OBVIOUSLY is a bad thing, so i went to see how loose the nut was... i SPUN it by barely touching it.



determined that was a horrible thing indeed, grabbed a 14mm and torqued the **** down until i thought the wrench was gonna snap.



got in the car and WOOHOO no more vibrations.



i then forgot about it and went inside and took a nap.



came out, went on highway, and took off and went thru 1st, 2nd, and 3rd. i thought my car sounded awfully loud and 3rd gear felt longer then normal (ive become used to using the boost gauge as a tach by just shifting at 10psi no matter what the rpm to save my engine from overboost) so i gracefully glanced at the tach at the same moment the redline buzzer went off. I almost jumped out the sunroof, i had redlined 3rd and never gone over 10psi.



so the solution to my ongonig wastegate problem? tighten the engine mount.



i think the torquing of the engine would cause it to slant hard (sliding in the mount) when it would do this a weird geometry would be formed between the actuator, actuator rod and wastegate causing it to only be able to open slightly. That's the theory at least.



kevin.
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Old 01-02-2004, 06:45 PM
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hmmm what does the engine mount gotta do with your wastegate though?
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Old 01-02-2004, 06:47 PM
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sheepskin seat covers?
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Old 01-02-2004, 06:47 PM
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well cool
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Old 01-02-2004, 06:57 PM
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cool...hope it stays fixed



but was it mostly the high rpm 4th gear load that was creeping?: From the Evo8 kill:



"i actually reeled fourth out dangerously till i was at 17psi "
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Old 01-02-2004, 06:58 PM
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Originally Posted by Erik' date='Jan 2 2004, 07:57 PM
cool...hope it stays fixed



but was it mostly the high rpm 4th gear load that was creeping?: From the Evo8 kill:



"i actually reeled fourth out dangerously till i was at 17psi "
every gear did that



3rd would reline at about 15psi, 4th around 17psi.



ill test 4th sometime, but i dont normally redline it on the average trip.



and yes sheepskin seat covers are way 1337.



kevin.
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Old 01-02-2004, 07:11 PM
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your wastegate is fikse'd so that all that matters... who cares how it happen
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Old 01-03-2004, 12:03 AM
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Originally Posted by pengaru' date='Jan 2 2004, 07:47 PM
sheepskin seat covers?
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Old 01-03-2004, 10:35 AM
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I don't see how it could mess up the geometry between your wastegate/actuator, because they are both made to the turbo for that to happen the acctuator would have to be made to the car.



Maybe there was a vacume line pinched somewere and you unkinked it, without knowing. I'm not to sure, but I can't believe the motor mount had anything to do with it.
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Old 01-03-2004, 02:24 PM
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Originally Posted by wanta be boosted' date='Jan 3 2004, 11:35 AM
I don't see how it could mess up the geometry between your wastegate/actuator, because they are both made to the turbo for that to happen the acctuator would have to be made to the car.



Maybe there was a vacume line pinched somewere and you unkinked it, without knowing. I'm not to sure, but I can't believe the motor mount had anything to do with it.
wow yea completely ignored the fact that all thigns are on the turbo.



i now have no idea why but it works, but i want to know why it works, im just that kinda guy.



kevin.
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