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If a guy were to change thrust bearings, con rod bearings, and main bearings to aftermarket ones, will the stock crankshaft SAFELY and RELIABLY handle 400-450 horsepower? It's for a S13 Redtop SR20.
 

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Crankshaft

Mekanik22 said:
If a guy were to change thrust bearings, con rod bearings, and main bearings to aftermarket ones, will the stock crankshaft SAFELY and RELIABLY handle 400-450 horsepower? It's for a S13 Redtop SR20.
Hello you need to consider replacing the conrods and pistons and balance the crankshaft to achive 400bhp. :thumbup:
 

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Nismophiliac
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20psi 240sx said:
the stock crank is probably good for 800-1000hp. modern 4 cyl cranks hardly ever fail. are you building a 450hp motor? i would just do pistons and rods. maybe not even that much.
I would :) :thumbup:
 
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