TC88A or B, Early/Late...How Can you Tell

Discussion in 'Other Service and Maintenance' started by RibEye, Apr 3, 2010.

  1. RibEye

    RibEye Junior Member Contributor

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    What is the difference between TC88A and TC88B engines? How can you tell when one you have? When were A and B engines used?

    Early and late model year...how can you tell for sure which one you have?

    Thanks,
    Rich P
     
  2. Bud White

    Bud White Well-Known Member Retired Moderators

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    A is in everything but softail
    B is the balanced softail engine

    early or late of the production year is told by vin when it was built
     
  3. biscuit

    biscuit Junior Member

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    As mentioned the "A" is in everything but the Softails,which have the balanced "B" motor.
    Look at the engine mounts for confirmation.The "B" motors are solidly mounted to the frame.
     
  4. Breeze3at

    Breeze3at Well-Known Member

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    Another tell, front motor mount bolts on "A" engines are vertical. Front motor mount bolts on "B" are horizontal.
     
    Last edited: Apr 4, 2010
  5. ooheritage

    ooheritage Active Member

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    the A vibrates on the frame like its going to come out of there, the B doesn't.
     
  6. Thorns

    Thorns Active Member

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    The best motorcycling experience is where the engine is rubber mounted, shakes at idle, and is smooth above idle. It's an "A" engine. The "B" enigne is a solid mount to frame, and doesn't shake at idle, but will have a buzz at higher rpm's at higher speeds. Another controversy.

    Thorns