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B, C, CA thrust bearing question
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ktm911 View Drop Down
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Joined: 01 Aug 2012
Location: Ontario
Points: 78 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ktm911 Quote  Post ReplyReply Direct Link To This Post Topic: B, C, CA thrust bearing question
    Posted: 04 Jul 2015 at 9:53am
I had to get a new crank after the old one had its thrust bearing wear a pocket into the crank. It had new bearings in it (what looked like new) and the thrust one was badly worn.

It only had half a bearing with a thrust surface. Is this normal, or should both halves have a thrust surface on the sides?

Thanks for the help
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PaulB View Drop Down
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Points: 4949 		Post Options Post Options   Thanks (0) Thanks(0)   Quote PaulB Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jul 2015 at 10:40am
Yes: The B,C and CA engines only have a single shell as the thrust bearing. If the machine shop did a correct job of grinding the crank, the front journal should be properly re-sized to fir a new bearing shell after the timing gear is installed.
If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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Dick L View Drop Down
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Joined: 12 Sep 2009
Location: Edon Ohio
Points: 5087 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dick L Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jul 2015 at 3:08pm
If you look close at your block you will find that it is not made for the thrust bearing shell.




Edited by Dick L - 04 Jul 2015 at 3:09pm
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Ken in Texas View Drop Down
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Points: 5919 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken in Texas Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jul 2015 at 6:03pm
If end play is excessive with the new thrust bearing in your rebuild kit the crank has to be welded up and reground to speck.
If I remember right the new thrust bearing in the last rebuild kit I used was shorter than the one it was meant to replace. I just used the old one to fix the excess end play.
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