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Thread: Flexplate or Flywheel

  1. #1
    hans
    Which should I run (already have a flexplate). I've heard that the flexplates can crack due to flexing.
    Paul

  2. #2
    Heatseeker
    I'm running a flex plate on my blown jet motor. Haven't had any probs yet. I did buy a good quality "SFI" certified unit, not one of the cheap Chinese models all over the 'net. I don't see any need for a flywheel. Just more weight to get spinning at launch time. It's only there for the starter to have something to crank the engine over with anyway...
    My $.02

  3. #3
    F N Fast
    Had a flexplate - worked good until it didn't, now have an aluminum flywheel. No difference in performance that I can tell, other than the starter sounds better. Had it balanced with the engine.
    Not much of a wieght difference between the aluminum flywheel vs. the steel flexplate, there is about a $100 difference however.
    I agree with heatseeker, if your gonna buy a flexplate get a SFI rated one for sure. Should work just fine.

  4. #4
    hans
    Thanks guys,
    F N Fast: What happened when 'it didn't' ?
    Paul

  5. #5
    hans
    Thanks guys,
    F N Fast: What happened when 'it didn't' ?
    Paul

  6. #6
    DansBlown73Nordic
    I have read that a Flex Plate won't soak up the harmonics like a flywheel. A flex plate was designed to be used with a torque converter not by it self.

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