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Chevrolet Informative - Lsx 454 crate motor blows up--- and has thin cylinder walls - lsx 454 crate motor blows up
Lsx 454, lsx454 crate motor- THIN CYLINDER WALLS
An important component of the engine block’s strength comes from having enough metal thickness to support a load. The industry standard and Chevrolet’s standard for cylinder wall thickness is a minimum of. 200 thousands of an inch. Chevrolet’s own advertising for the lsx block states “maximum 4.250 bore at. 200 minimum wall thickness”. My defective block had a smaller 4.185 bore, hence the remaining cylinder wall thickness should have been. 2325. However the sonic testing that was performed post-mortem discovered a bore thickness as little as. 177 which effectively cheated me of. 0555 thickness of metal or using a simple analogy in dollars, I was entitled to $232.50 but only received $177.00 dollars. A shortage of $55.50 or 24 percent!
Clearly this engine block was defective even by Chevrolets own standards. Below is the page directly from Chevrolet. As Proof, I circled in red where Chevrolet states cylinder wall thickness.
An important component of the engine block’s strength comes from having enough metal thickness to support a load. The industry standard and Chevrolet’s standard for cylinder wall thickness is a minimum of. 200 thousands of an inch. Chevrolet’s own advertising for the lsx block states “maximum 4.250 bore at. 200 minimum wall thickness”. My defective block had a smaller 4.185 bore, hence the remaining cylinder wall thickness should have been. 2325. However the sonic testing that was performed post-mortem discovered a bore thickness as little as. 177 which effectively cheated me of. 0555 thickness of metal or using a simple analogy in dollars, I was entitled to $232.50 but only received $177.00 dollars. A shortage of $55.50 or 24 percent!
Clearly this engine block was defective even by Chevrolets own standards. Below is the page directly from Chevrolet. As Proof, I circled in red where Chevrolet states cylinder wall thickness.
Comments:
Posted by Whiteduck on 2011-03-09:
I'm sure I'll never be mechanic enough to worry about buying a crate motor, but do you think this is a one time deal or are all their motors this way? Would seem to indicate that the ones they put in from the factory would be this way as well.
Posted by breat12 on 2012-03-13:
Who bored it? Anybody other than chevy your out the loop[
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