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Visual Differences Between Cast Iron & Forged Steel Crankshafts
Hi there,
I have searched high and low for an answer to this question. I recently have purchased a 1969 375hp 396 engine. A very rare engine! Now the only problem is telling if it has all the true internal components inside as I was told it had. Can anyone tell me if there are any visual differences between cast iron & forged steel crankshafts that will help me determine what is inside. If there are not any visual is there a way to tell...any factors I can look for? Any help would be greatly appreciated. Jeff Gerlitz |
#3
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Visual Differences Between Cast Iron & Forged Steel Crankshafts
wrote:
> > wrote: > > Hi there, > > > > I have searched high and low for an answer to this question. I > > recently have purchased a 1969 375hp 396 engine. A very rare engine! > > Now the only problem is telling if it has all the true internal > > components inside as I was told it had. > > > > Can anyone tell me if there are any visual differences between > > cast iron & forged steel crankshafts that will help me determine what > > is inside. If there are not any visual is there a way to tell...any > > factors I can look for? > > > > Any help would be greatly appreciated. > > > > Jeff Gerlitz > > Hi Jeff! > I hope that the following web-page is really helpful to you! > > http://www.mustangandfords.com/howto.../photo_10.html As the article says the difference in the size of the parting is one way. If the crank is out of the engine and you hit it with a hammer the cast crank will make a thud and the forged crank will ring like a bell. Stan |
#4
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Visual Differences Between Cast Iron & Forged Steel Crankshafts
Stan Weiss wrote: > > > As the article says the difference in the size of the parting is one > way. If the crank is out of the engine and you hit it with a hammer the > cast crank will make a thud and the forged crank will ring like a bell. No that's not true. There are many different cast iron alloys. Gray iron will have a dull thud when struck, but crankshafts are typically made from ductile iron which will ring when struck. Ductile iron (depending on the alloy) can actually have more of a ring than steel which makes more of a clang type sound. Cast iron engine blocks OTOH are usually made of gray iron and will make a dull sound when struck. -jim ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#5
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Visual Differences Between Cast Iron & Forged Steel Crankshafts
Look at the parting line on the crankshaft. A wide line that isn't in
line over the length of the crank, with grind marks means a forged crank while a narrow line that runs inline down the crank is a cast crank. The reason is because the forged crank is forged then the flash is ground, then it is twisted into it's final shape while still hot, while a cast crank is cast in shape, cleaned of sand and flash and then ground. The twisting of a forged crank means that the parting line moves on each throw. -- Steve W. > wrote in message ups.com... > Hi there, > > I have searched high and low for an answer to this question. I > recently have purchased a 1969 375hp 396 engine. A very rare engine! > Now the only problem is telling if it has all the true internal > components inside as I was told it had. > > Can anyone tell me if there are any visual differences between > cast iron & forged steel crankshafts that will help me determine what > is inside. If there are not any visual is there a way to tell...any > factors I can look for? > > Any help would be greatly appreciated. > > Jeff Gerlitz > ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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