Originally posted by TrueStreetMotorSports.com
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What keeps clicking in my head is all of the drive line issues and symptoms...
- new clutch and flywheel installed by TrueStreet
- car stays in gear after a dyno pull
- intermittent higher RPM vibration
- photos he posted show a demolished TO bearing and a mangled TO bearing engagement pawl
- says vibration is now completely gone after replacing those items and installing dowels into the flywheel
the dowels help align the pressure plate. They also keep the bolt holes lined up since there is slack room in the PP holes to flywheel. I could see how the lack of dowels (if missing) could allow the PP to shift and throw the rotating assembly off balance... the PP is in constant contact with the engine and it could have been walking around on the PP bolts... hence why there was a vibration when the trans was disengaged and the motor revved up. That would cause an intermittent vibration. It would also allow for improper engagement of the TO bearing which could explain the TO bearing blowing up. It would explain the clutch being engaged on the dyno if the PP shifter and allowed the fingers to be over-extended when the clutch was pressed in.
Why was it intermittent? Torque is a wonderful thing. The PP engages with the clutch and it scoots the PP over on a hard shift, it scoots back the other way (re-balancing itself slowly) during normal driving.
The engine rotating assembly is static, I do not see how there could be an intermittent vibration from the short block. You seem to agree as well, hence R&Ring the balancer.
I hope you guys can work this out, it sounds like a complete mess. I've heard nothing but good things about your shop, Clint.
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