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cracked block?

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Old Mar 25, 2010 | 11:12 PM
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Default cracked block?

I bought an aluminun 5.7 block from a buddy. He showed me at the time of purchase where the #7 cyl had been sleeved due do some damage that had occured on the old setup but assured me that all was good. Today upon inspecting the block during assembly we noticed that the block has a small crack between the sleeve and water jacket on the deck surface. My theory is that this occured when the sleeve was being pressed in. If you look down inside the water jacket the crack extends for an inch or so down from the deck surface and stops. My question is because the head gasket seals against the sleeve itself is the block useble? or is it scrap? opinions will be appreciated!

Last edited by CHAMPSLSX; Mar 25, 2010 at 11:42 PM.
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Old Mar 25, 2010 | 11:16 PM
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Oh btw the crack that was in the original sleeve was in a total dif location the where the crack is now on the block. I was down toward the bottom didnt extend near the deck and about 90 deg away
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Old Mar 25, 2010 | 11:19 PM
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Man I dont know. If I was you I would just get another block. It not worth taking the risk of installing a motor and it start leaking or mess up the rest of the motor.
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Old Mar 25, 2010 | 11:27 PM
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Yea that sounds iffy, get a new block man
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Old Mar 26, 2010 | 03:51 PM
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dont use it or you can screwup the other new parts aswell.....
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