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Thread: 1300 crank

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  1. #1
    Freshman Member johhny_utah's Avatar
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    1300 crank

    Hello all,

    I am new to this forum and would like to kick off my time here with a question. I am rebuilding a 72 spitfire MkIV and have a question about the crank. Do all of the FK blocks come with a larger crank than the FD and FE series? I ask because my journals are measuring about the same as a 1500 crank. Also the cam has no bearings. it is fitted in the block just like the 1500. Any clarification on this would be greatly appreciated.

    Thanks, John.
    So much work for such a little car

  2. #2
    Jedi Warrior Don_R's Avatar
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    Re: 1300 crank

    I have a 73 Spit 1500 with a late FK motor.

    As I understand it the FK is the big bearing 1300. More like the 1500 motor that the early small bearing 1300.
    Don Rorick:.
    Wilkes-Barre, PA
    Proud owner of
    1973 Spitfire Mk IV/1500 (Vyvyan)
    1959 TR3A
    "Sic gorgiamus allos subjectatos nunc"

  3. #3
    Luke Skywalker
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    Re: 1300 crank

    FK basically means "big crank"

    Now not that I want to cause problems but if you have access to a small crank motor, that is what I would rebuild an put it. They rev up much quicker and a smoother than the big crank motors.

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