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Flywheel crack

Tiny
DAVEJAMES
  • MEMBER
  • CHEVROLET VAN
Auto 99 chevy venture, 117,000 miles 3.4L
what would cause a fly wheel to crack (straight crack)? Trans. Replaced 9-06 with junkyard bought one by dealer. Could they have done something wrong replacing it?
Tuesday, October 2nd, 2007 AT 4:36 PM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
If it's a manual transmission, could be it was too thin, or warped. Flywheels are machined to give a swirl finish for the clutch. If it auto, usually just stress!
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Tuesday, October 2nd, 2007 AT 5:11 PM
Tiny
BOOTDOG
  • MECHANIC
  • 665 POSTS
I agree. By it being an auto, stress/tension could cause the crack. Usually flywheels/flex plates bolt up only one way. If it is cracked, make sure the next one is bolted down to the right spec and that it is evenly torqued in a star pattern to prevent any binding.
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Tuesday, October 2nd, 2007 AT 8:26 PM

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