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Thread: differences in T,E,&S cranks and head

  1. 09-28-2008, 11:15 PM #1
    356robo
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    differences in T,E,&S cranks and head

    In my parts book for my 70 911, I noticed that the cranks and heads have different part numbers for T's and E's & S's. The valves are all the same. What are the differencesin heads and cranks?

    Robo
    356Robo
    64 C Coupe #218448(sold)
    70T Targa #9110110416(sold)
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  2. 09-29-2008, 12:42 AM #2
    ajwans
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    1970 T cranks are non-counterweighted IIRC.

    andy
    67S in pieces
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  3. 09-29-2008, 08:31 AM #3
    andyjboy
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    The E & S heads have different sized inlet/exhaust ports & had threaded holes for the (mechanical) fuel injectors :


    E models have 32mm/32mm ports

    S models have 36mm/35mm ports


    The T models have 32mm/32mm ports but no threaded holes for injectors since they were equipped with Zenith carbs.
    Andy

    Early 911S Reg #753
    R Gruppe #105
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