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1655 engine rebuild


 
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Cleon Couey
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Joined: 18 Mar 2008
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PostPosted: Fri Jul 10, 2020 6:49 pm    Post subject: 1655 engine rebuild Reply to specific post Reply with quote

Took my block, head and 310 crank to the machine shop. Machinist says my crank is bad (#2 journal is down 0.031) and my block is cracked between cylinders and he's reluctant to weld block or crank. Crank supplier says they will exchange it for a usable crank. Any thoughts from anyone?
 
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J. Schwiebert
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Joined: 27 Sep 2013
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PostPosted: Sat Jul 11, 2020 2:35 am    Post subject: Re: 1655 engine rebuild Reply to specific post Reply with quote

Are the cracks in the top or bottom of the block or both places? Remember welding a diesel crank is different than just welding a steel crank.
 
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J. Schwiebert
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PostPosted: Sat Jul 11, 2020 6:50 am    Post subject: Re: 1655 engine rebuild Reply to specific post Reply with quote

I forgot to ask but does the shop have the correct dimensions for the valve protrusion?
 
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Cleon Couey
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PostPosted: Mon Jul 13, 2020 3:33 am    Post subject: Re: 1655 engine rebuild Reply to specific post Reply with quote

Yes, they have the protrusion dimensions. I made sure of that. The cracks are in the top of the block I think. They haven't shown me a crack in the bottom. What's the difference between a steel and a diesel crank?
 
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J. Schwiebert
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PostPosted: Mon Jul 13, 2020 7:27 pm    Post subject: Re: 1655 engine rebuild Reply to specific post Reply with quote

On a diesel crank the journals are hardened. Did they check the Rockwell on your crank. Asked him whatthe protrusion is the last man I talked to had the wrong dimensions!
 
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