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detonation with just bad amin bearing wear #1555409
12/30/13 12:43 AM
12/30/13 12:43 AM
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Gettysburg Pa
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roadrunnerreds Offline OP
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Gettysburg Pa
Pulled my 360 to freshen it and get to mains and the bottom halfs are brassy but tops look ok rod bearings are ok.

Re: detonation with just bad amin bearing wear [Re: roadrunnerreds] #1555410
12/30/13 12:53 AM
12/30/13 12:53 AM
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British Columbia
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toddd Offline
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British Columbia
What do the main caps look like?.

Can you post a pic of the bearing?

Re: detonation with just bad amin bearing wear [Re: roadrunnerreds] #1555411
12/30/13 02:44 AM
12/30/13 02:44 AM
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North Alabama
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Monte_Smith Offline
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North Alabama
Sounds like it needs line honed. Improper bearing crush or possibly bent crank

Monte

Re: detonation with just bad amin bearing wear [Re: Monte_Smith] #1555412
12/30/13 03:05 PM
12/30/13 03:05 PM
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Hot Rod Ridge
FastmOp Offline
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Hot Rod Ridge
If its detonation the upper rod bearings will show it as funny where or will be under size on a micrometer.

Re: detonation with just bad amin bearing wear [Re: FastmOp] #1555413
12/30/13 03:16 PM
12/30/13 03:16 PM
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Romeo MI
MR_P_BODY Offline
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Romeo MI
Quote:

If its detonation the upper rod bearings will show it as funny where or will be under size on a micrometer.




I've never seen detonation on just a main bearing..
the rods would show it before the mains... has to
transfer the detonation from the piston to the crank
somehow

Re: detonation with just bad amin bearing wear [Re: Monte_Smith] #1555414
12/30/13 03:49 PM
12/30/13 03:49 PM
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Posts: 13,247
Mt. Vernon, Ohio
dartman366 Offline
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Mt. Vernon, Ohio
Quote:

Sounds like it needs line honed. Improper bearing crush or possibly bent crank

Monte


as reasonable an answer as I have heard yet, are these the caps that came with the block?


Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
Re: detonation with just bad amin bearing wear [Re: dartman366] #1555415
12/31/13 10:51 AM
12/31/13 10:51 AM
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Gettysburg Pa
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roadrunnerreds Offline OP
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Yes it is the crank that was in engine before. Caps have marks indicating cap walk.







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