<VV> Nitriding crankshafts

[BobHelt at aol.com]

In a message dated 2/3/2008 10:10:43 PM US Mountain Standard Time,  
crawfordrose at msn.com writes:

the SAE  papers state that the early standard crank was carbon 
SAE 1045 steel and  the turbo cranks were chromium SAE 5140 steel. Probably 
all late cranks  were the chromium SAE 5140 steel but not all were nitrided, 
as we  know.
Crawford 


Thanks, Crawford,
Yes, the 145 cid turbo engines used a crank that was nitrided and made from  
a different material than the other 145 engines. But all of the 164 cranks 
were  made from the same steel. it's just that the turbo and 140 engines got 
their  cranks nitrided (at least until around 1967)
Regards,
Bob Helt



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