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Thread: Quick Question About Crank/Bearings.

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    SKADOOSH!!! verified Feedback Score 1 (100%) J_Parker's Avatar
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    Quick Question About Crank/Bearings.

    I'm throwing my bottom end together AGAIN, due to a foolish mishap with a dust pan, I want to make %100 sure that everything is in check this time, What exactly are the stock diameters of the mains and rods? I've done some unsuccessful looking around, I'm going to be picking up some new bearings pretty soon, and would like some peace of mind.

    Also, if anyone knows the differences between the JDM, and USDM cams, that would be greatly appreciated.

    Thanks!
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    Twin Turbo verified Feedback Score 5 (100%) GTOJOE's Avatar
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    get steve to post some pics of the JDM cams
    1990 JDM GTO TT with Vi-PEC plug-in V44 EMS, TD04-13T's, 3SX Downpipe, MP Hi-flow cat, ARC SMIC's, Aeromotive Stealth 340LPH pump, Fuelab 515 FPR, Ninja Performance 75amp hotwire kit, oohnoo fuel loop & rail adapters, Nylon braided ethanol fuel line, NGK AFX Wideband, K&N FIPK, Iridium plugs, HKS Twin Power DLI, Turbo XS racing BOV, 3SX poly mounts, Custom 280km/h speedo.

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    Injector Dynamics 725cc Injectors.

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    the crank dimensions are.. pin od=1.965 and journal od=2.358 out of round .00012 taper of journal and pin less than .0002.. i assume you mean dohc

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    SKADOOSH!!! verified Feedback Score 1 (100%) J_Parker's Avatar
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    Quote Originally Posted by GTOJOE View Post
    get steve to post some pics of the JDM cams
    Lol Steve and I make a point of no longer communicating for the better of the community

    Quote Originally Posted by mcshooter View Post
    the crank dimensions are.. pin od=1.965 and journal od=2.358 out of round .00012 taper of journal and pin less than .0002.. i assume you mean dohc
    Thank you very much!

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    SKADOOSH!!! verified Feedback Score 1 (100%) J_Parker's Avatar
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    Thanks Steve, much appreciated.

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    I AM IMPORT POWER Feedback Score 1 (100%)
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    Per the manual: available here Ninja Performance Shop Manuals

    Limit:
    Out-of-roundness of journal and pin: 0.003 mm (.00012 in.)
    Taper of journal and pin: 0.005 mm (.00020 in.)

    Also remember there are 3 sizes of cranks and 3 sizes of blocks as it pertains to the pin sizes.

    -Chris

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