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m-37 crankshaft. can it be cut?

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  • m-37 crankshaft. can it be cut?

    Has anyone here had the journals on a 230 crank cut? one of the rod bearings went bad in my truck. My dad had bad luck with remachined cranks in his m-37 years ago something like three of them. Are they case hardened and machining goes through that?

  • #2
    Wouldn't know why he had trouble in the past unless they were turned to far or clearance wrong.
    20 under is as far as I like to go then look for a better shaft.
    Ideally std. or 10 under works best.
    TGP
    WDX & Misc. Pics.
    http://www.t137.com/cpg/index.php?cat=10010
    "47" Dodge WDX WW
    "52" Dodge M-37 WW
    "54" Willys M38A1
    "65" Kaiser M35A1 WW
    "77" Chev. K-30 400T,205,4.56 "No-Spin"
    "84" Chev, K-30 Cummins 6-BTA 400,205,3.73Locker
    "86" Chev, M1028A2 (K30) 6.2,400.205,4.56 Locker
    "99" Dodge Durango "Limited Slip"
    "99" Dodge 3500 CTD 4x4"No-Spin"

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    • #3
      crank

      I took the crank rods and block to the machine shop today to be checked out, they said it's not that bad, fixed far worse. While taking it apart, I discovered the top ring in 2,3,4 and 5 was broken leaving only two cyl. with proper compression, this is a French rebuilt 230 I'm guessing wwII vintage? so with modern rings and cleaned up bores should have a lot more power. How is the quality of these French rebuilt motors?
      Last edited by Matthew Ziegler; 10-01-2015, 07:59 PM. Reason: dumb

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