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Old May 31, 2011 | 07:46 PM
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From: Monroe City in
rod bearings

i am replacing rod bearings in my 79 bronco. It has a 351m. I have the motor pulled and on a stand. Im really just wanting to replace the rod bearings. This is just my mud truck. Any guidance on replacing them. I was afraid the crank wasnt good cause one bearing wasnt even there. but crank is good.
 
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Old Jun 1, 2011 | 08:47 AM
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No way to know for sure if everything is ok till you mic the cranks throws and run a bore gauge through the rods bores
 
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Old Jun 1, 2011 | 09:49 AM
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missing bearing?

Do what mark said!! bearing missing scary!!!!!!!! Need to micrometer the rod and mic the crank. Never heard of a good crank with a missing rod bearing?
 
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Old Jun 1, 2011 | 01:41 PM
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From: Monroe City in
Ok il get it the rest way apart and get it checked better. Thanks for the input.
 
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Old Jun 1, 2011 | 02:25 PM
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If it ran without a bearing shell, the crank is probably junk or will need to be welded up and machined.

NOW is the time to turn that mouse-hearted smog motor into a fire breather with a 400 crank and a few other well placed parts.
 
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Old Jun 1, 2011 | 08:00 PM
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From: Monroe City in
Ya im sure it ran a lil bit with it out. It was knocking pretty bad. Im not sure wat i want to do yet. I know where another running 351m is at for 200 and if i get it i would like to build the old motor up and have it for a spare. The way you guys talk makes me worried bout the crank now. o well got to take it apart and find out
 
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