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HD6B #789 rod bearing
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IronWarrior View Drop Down
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Joined: 17 Aug 2022
Location: Sage, CA
Points: 5 		Post Options Post Options   Thanks (0) Thanks(0)   Quote IronWarrior Quote  Post ReplyReply Direct Link To This Post Topic: HD6B #789 rod bearing
    Posted: 17 Aug 2022 at 6:26am
can someone tell me what the diameter of the rod journal on a 344 buda should be?
I'm trying to determine if the crank has been turned and if so to what extent.
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gemdozer View Drop Down
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Joined: 17 Sep 2009
Points: 1066 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gemdozer Quote  Post ReplyReply Direct Link To This Post Posted: 17 Aug 2022 at 7:13am
The rod bearing is 2.7715/2.7725 but am't a expert
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IronWarrior View Drop Down
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Joined: 17 Aug 2022
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Points: 5 		Post Options Post Options   Thanks (0) Thanks(0)   Quote IronWarrior Quote  Post ReplyReply Direct Link To This Post Posted: 17 Aug 2022 at 7:21am
Thank You. 
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IronWarrior View Drop Down
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Joined: 17 Aug 2022
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Points: 5 		Post Options Post Options   Thanks (0) Thanks(0)   Quote IronWarrior Quote  Post ReplyReply Direct Link To This Post Posted: 17 Aug 2022 at 1:47pm
why are there two different values?
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gemdozer View Drop Down
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Joined: 17 Sep 2009
Points: 1066 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gemdozer Quote  Post ReplyReply Direct Link To This Post Posted: 17 Aug 2022 at 5:05pm
I found these number in FEDERAL-MOGUL and you could check with your NAPA dealer
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Adrian View Drop Down
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Joined: 26 Apr 2022
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Points: 13 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Adrian Quote  Post ReplyReply Direct Link To This Post Posted: 17 Aug 2022 at 8:51pm
The manual says main bearing 3.498 to 3.499 and connecting rod 2.7715 to 2.7725. Mains can be ground to .010, .020, .030, .040 below 3.499 and below 2.7725 for the connecting rods. I hope this helps.
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IronWarrior View Drop Down
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Joined: 17 Aug 2022
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Points: 5 		Post Options Post Options   Thanks (0) Thanks(0)   Quote IronWarrior Quote  Post ReplyReply Direct Link To This Post Posted: 17 Aug 2022 at 11:57pm
Yes it does help. thanks. i just put the mic on my rod journal it comes out to 2.757
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Adrian View Drop Down
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Points: 13 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Adrian Quote  Post ReplyReply Direct Link To This Post Posted: 18 Aug 2022 at 2:16am
Glad I could help. It's worth getting a service manual as they are pretty comprehensive.
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