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Thread: Connecting Rod Bearings

  1. #1

    Default Connecting Rod Bearings

    Why the difference on rod bearings from cylinders 1,3,5 and 2,4,6? Connecting rods are different also according to the '34P
    SFC, HQ,129th Sig Co, PAARNG, Vietnam Era

  2. #2
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    Default

    The crank journel end of the rods are slightly offset from the center line and they have an oil squirt hole that must face towards one side of the cylinder (the thrust face). So they can't be interchanged.

  3. #3

    Default Oil Hole

    Quote Originally Posted by hiker View Post
    The crank journel end of the rods are slightly offset from the center line and they have an oil squirt hole that must face towards one side of the cylinder (the thrust face). So they can't be interchanged.
    So in other words, the only difference in the rod bearings would be the oil hole location? Left and right?
    SFC, HQ,129th Sig Co, PAARNG, Vietnam Era

  4. #4
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    I haven't looked at these rod bearings lately, but yes the oil hole is located in a mirror image. Also the tangs on the bearings may also be a mirror image from left to right. I don't think its as simple as drilling another hole to make an even # bearing work in the odd # position.

  5. #5

    Default On Hand

    I have 20 or so bearings for 2,4,6 but no 1,3,5. Just found out 1,3,5 sets are rare. Another one of those strange things about the '715. I was quoted $315 for 3 of them.
    SFC, HQ,129th Sig Co, PAARNG, Vietnam Era

  6. #6
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    A while back I was researching these bearings (on line) and found a company in Isreal (sp?) that manufactured replacement brg's for the 230. I'm curious what size brgs do you need 0.020 undersize?

  7. #7

    Default Future

    Quote Originally Posted by hiker View Post
    I'm curious what size brgs do you need 0.020 undersize?
    I am gathering parts while I can for any future rebuild so .010 or .020. However, the more I think about it, the more I believe it may be just as well to do an engine swap (SBC) if needed. I would prefer to keep as close to "stock" as possible but that may prove to be difficult in the future. Do you remember who had the bearings?
    SFC, HQ,129th Sig Co, PAARNG, Vietnam Era

  8. #8
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    One source that lists these bearings is Egge Machine shop in SoCAl. I bought oversized 230 pistons from them about ten years ago. They are known for their made to order pistons. They list the rod bearings for $22 each. http://egge.com/ the parts are listed under Willys 230 CI from '63 to '65. For example: CB730-010 is a ten undersized

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