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Block dimensional specification help

Discussion in 'Technical Q&A' started by FounditintheBarn, Jan 8, 2010.

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  1. FounditintheBarn

    FounditintheBarn Rookie

    Jan 8, 2010
    2
    TamworthNewHampshire
    #1 FounditintheBarn, Jan 8, 2010
    Is there someone who has this stuff available for "old barn cars?"

    I require some main bearing, standard housing bore, dimensional sizes for the folowing main bearing galleys of the engine block-with the main saddles in place and torqued to specification (these numbers also!) blocks-some, if not the majority of them, are the same, but I need the sizes, to "tenths." none the less...
    128 A, B, C, D, F, D/F and 168
    210, 211, 213(c)
    163(c)

    For the crankshafts of these engines: main bearing std. pin size.
    Rod bearing-std. pin size

    ...in tenths?
     
  2. Ferraripilot

    Ferraripilot F1 World Champ
    Owner Project Master

    May 10, 2006
    17,919
    Atlanta
    Full Name:
    John!
    #2 Ferraripilot, Jan 9, 2010
  3. 2NA

    2NA F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 29, 2006
    18,221
    Twin Cities
    Full Name:
    Tim Keseluk
    #3 2NA, Jan 9, 2010
  4. 335s

    335s Formula Junior

    Jan 17, 2007
    870
    SF Bay Area
    Full Name:
    T. Monma
    #4 335s, Jan 9, 2010
    Geee, the link for 308GT/4 manual doesn't seem to be in the same sort of "Barn" rental strata, as the models which are suggested by the engine types requested!

    PM me directly-I am overhauling 1 of almost two thirds of what you have listed.

    Most are the same...of a MUCH bigger concern -f you are machining the bottom end(why else would you be asking for housing bore dimensions?)-is whether or not ANY previous line HONING, and or boring, has taken place. Especially, honing...

    A very typical problem on Vintage, hi dollar exotics 40-50- and 60 years old!


    Typically, a quick pass with a grinder on the bottom of the block(the pan rail included) has now foreverafter corrupeted your reference centerline....
    To regaain this requires a machine which precious few shops have...it is strictly OLD school and VERY expensive, and few practitioners-even if they have the machine and requisite tooling and experience- are familiar with the use on these cars.
    The item is, after all, Italian made by Berco. BC-4 or BC-5 Line Bore.
    Prior to this, there requires metal repair, and heat and stress releif issues, way way to gnarly to discuss in a forum as general, and lay termed, as is this one. All fact, no BS.
    There are 3 machines which I know of in northen California(yes, I have 1-1 of 2 with the 100" bed version...even RARER...MAYBE 10 in NA!), 1 in Massachusettts(must be the 1 near You in NH?), 1 in TX, 1 in AL, you get the idea...

    All of the auto probing CNC multi funtion machines still, STILL, require a reference OFF of the CENTERLINE of the main bearing galley bores...it is GOD....start there, and everything, EVERYTHING can be located and referenced off of this bore hole...without it, it is all BS and the motor will not last-no matter whoi assembles it and regardless of how much money is thrown at it...period.

    PM as you require...
     

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