ati balancer

Discussion in 'Small Block Tech' started by FLAME ORANGE GS, Oct 15, 2017.

  1. FLAME ORANGE GS

    FLAME ORANGE GS Founders Club Member

    is the ati balancer 918410 a bolt on replacement or the does it require modification of the timing cover?
     
  2. stk3171

    stk3171 Well-Known Member

    Buick engines require mounting damper face forward of the OEM location to clear the timing cover for external balance dampers. Hubs may be machined on the crank gear end when using the shorter internal balance units to move the damper closer to the engine. 403-455 is .725” forward of the OEM location; 265-350 V8 and 252 V6 are 1.250” forward of the OEM location.

    I use BBC crank pulley that will need some machine work to fit.
     
  3. stk3171

    stk3171 Well-Known Member

  4. alec296

    alec296 i need another buick

    Following. Have an internal balance ati. Will need to know pulley setup
     
  5. FLAME ORANGE GS

    FLAME ORANGE GS Founders Club Member

    that seems like a pain in the butt, any benefit to the ati on a 350 hp motor?
     
  6. stk3171

    stk3171 Well-Known Member

    the stock balancers come apart therefore you are done racing. The bad balancer also broke the front cover causing it to leak oil and had to replace it.
    Dan
     
  7. Extended Power

    Extended Power Well-Known Member

    We went with the BHJ SFI approved dampner from TA Performance...not cheap by any means, but it is a high quality piece.
     
    300sbb_overkill likes this.
  8. Mart

    Mart Gold level member

    Ivan,
    Did you go internal or ext. balance on build?
     
  9. Extended Power

    Extended Power Well-Known Member

    Marty, I'm pretty sure we stuck with externally balanced.
    The rods were balanced. (Small ends, and big ends) Because of the clearancing we had to do for the cam.
    Pistons and rings were balanced to the lightest set, and kept as a complete set.
    The shop had everything...crank, ring gear, balancer, rods, Pistons, rings, pins, bearings...everything.
    We didn't bring in the crank pulley, because they said they are zero balanced. (Will work on any engine, as they are balanced separately. And you can see the drill marks from removing material on the front/back of the pulley from the factory.)
     

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