Blown Head Gasket???

Discussion in 'Race 400/430/455' started by Dubuick, Jun 18, 2009.

  1. blown455

    blown455 Pit crew

    yes piston skirts wear out..If it cracks another one that is your problem
     
  2. DaWildcat

    DaWildcat Platinum Level Contributor

    Yep, especially on the thrust side. Also, detonation will cause piston wear in all kinds of wierd places.

    [​IMG]

    Devon
     
  3. blown455

    blown455 Pit crew

    :gp: :gp: :gp:
     
  4. Dubuick

    Dubuick CMDR Racer

    There was no visual signs of piston wear I measured all the shirts and they were within spec on a 4.350 bore giving a .005 piston to cylinder clearance .I think I know what caused the issue I had a fuel deliver problem and the was breaking up on the top end in good air days do to a low rear float :Dou: I have driven it a few short rides on the street but don't think i'll get to the track till 7/25 :beers2:
     
  5. blown455

    blown455 Pit crew

    fuel problem caused motor to go lean and detonate which rattled piston and broke cyclinder wall...its pretty common, that is why timing and fuel are so important...
     
  6. Dubuick

    Dubuick CMDR Racer

    Well finally got to the track motor is great:Dou: DA 1890ft thought Mufflers it went 10.09 132....:beer
     

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