cracked flywheels, ideas!!

Discussion in 'Transmission' started by coupechamp, Apr 2, 2010.

  1. Dave

    Dave *Very Smart* Pedantic Old Fart Paid Member

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    You may need an Harmonic damper like this one!

    [​IMG]
     
  2. danster Forum Addict

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    Nice to see the old mech tappet wee block there Daved.:thumbup:
    895, 1093 and 1272cc IIRC
     
  3. Dave

    Dave *Very Smart* Pedantic Old Fart Paid Member

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    Feck danster, you're older than me, which is immpossibl, if you remember those.
     
  4. danster Forum Addict

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    I am the vw timelord and have had many incarnations in a TSC style.

    Made my millions by people giving me their cars thinking their engines were fooked due to the oil spewing out of every seal and gasket.
    I would get the car and replace the blocked breather on the the back of the block and punt it on! Happy days;)
     
    Last edited: Apr 16, 2010
  5. Dave

    Dave *Very Smart* Pedantic Old Fart Paid Member

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    Found this whilst doing research for Big Belly's Big Blue Brother. (love alliteration, or is it illeration?)
    [​IMG]
    Now, if the Ford Homologation Specials, with 10s of millions thrown at them, can't get their vibration dampers right, then, what chance have yous lot got?

    ps. I only do research for him cos he sends me Newky Brun to clear the sink!
     
    Last edited: Apr 16, 2010
  6. Matt82

    Matt82 Forum Addict

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    whats the odds its badly balanced and shook itself to death?
     
  7. Dave

    Dave *Very Smart* Pedantic Old Fart Paid Member

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    Not so sure Matt. If Cosworth could not balance an engine what chance have we got?
     
  8. A.N. Other Banned after significant club disruption Dec 5th 2

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    Ah, this is where you've disappeared to!

    Question is, how can you spot a flywheel flexing on a dyno?

    This all comes back to the harmonics thread, which I was going to bump for a different reason.

    Just to clarify I do not ship Newky Brun. It's posted to me ;)
     
  9. danster Forum Addict

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    It is a ford engine! Therefore, made of cheese which is quite malleable.;)
     
  10. Dave

    Dave *Very Smart* Pedantic Old Fart Paid Member

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    Cheeky bu**er. You damn well know which two of your secret missions I was working on! [:x] I've a good mind to make the full list public! Banned, maybe, but one or two, or three on here, will clamour for my re-instatement. (I hope). Mind you a lot more will send you slabs of Newky. Better you ban me NOW! Or, alternatively, you can Air Lingus me a cask of Tim Taylor's and a box of fish n' chips.:thumbup:

    It's all done with smoke and mirrors my Big Blue Boy. Ho, and "strobe-lights" and a 16mm cin camera. Been there, done it, at GKN-Laycocks.;)
     
  11. LregG

    LregG Paid Member Paid Member

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    [​IMG]

    [​IMG]

    [​IMG]

    Glad to say that that is not my car
     
  12. Dave

    Dave *Very Smart* Pedantic Old Fart Paid Member

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    Scarey. Luckily most of you are not pushing LHD cars around. Drivers of G60s and similar Left-Hookers need to reinforce their bulkheads, or wear kevlar full body armour!
     
  13. MUSHY 16V

    MUSHY 16V Moderator Staff Member Moderator

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    the scary thing is that was a LHD car
    would hate to think what would have happen if that had gone through the bulkhead
     
  14. A.N. Other Banned after significant club disruption Dec 5th 2

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    Flights are down - sorry, no can do :lol:

    Anyway, shoosh and keep at it! There is light and beer ahead.

    (Light may be your torch, interimly).
     
  15. alexisblades99 Forum Member

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    I'm surprised Eurospec haven't taken action on this tbh. Better to do a recall than face charges if someone gets killed. Of course it'll take someone getting killed to make them do something.
     
  16. A.N. Other Banned after significant club disruption Dec 5th 2

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    Smaller businesses are too hand to mouth to take this view. I've seen it in the UK and in Europe - they've got staff and rent to pay, so warranties and refunds don't come easy.

    If there's race use involved, forget it. There are no warranties.
     
  17. A.N. Other Banned after significant club disruption Dec 5th 2

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    I've finally dug these pics out of a flywheel that came off. One for the engineers to get into a fizz over :p

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]


    Obligatory weight supplied!

    [​IMG]
     
  18. Brian.G

    Brian.G Forum Member

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    Fatigue crack originating from the stress caused by the bolts acting as dowels once they came loose I would say. Is this your flywheel to destroy Chris? It would be interesting to cut out crack section and split them to see if rubbing existed either side of crack. It would be interesting to see if the holes had clean smooth chamfers and also that there as ample chamfer at the top of hole so as not to interfere with the radius between head and shank of bolt on the underside.

    Either way it looks like the bolts are coming loose for some reason, maybe the chamfer/radius interferes giving a false torque wrench reading, after a few cycles this interference would be pushed back, causing them to loosen.
    I wonder if oil, or say Loctite 620 was used? Both to get an accurate torque reading, and also for locking purposes(loctite)

    (this is nothing to do with torsional vibration if the bolts are tight)
     
    Last edited: Jun 8, 2010
  19. A.N. Other Banned after significant club disruption Dec 5th 2

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    Yes, it can be cut up as necessary, though chances are I don't have the equipment. What cuts need doing?
     
  20. Brian.G

    Brian.G Forum Member

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    Cut out the cracked piece between bolt hole and centre bore. Break it then on crack if it doesn't/isn't broke already and look at both crack faces for rubbing.
     

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