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r lane r lane is offline
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Join Date: Jun 2009
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crankshaft

Quote:
Originally Posted by dannobee View Post
Here's the forging process.

https://www.youtube.com/watch?v=qGwA-nV82dY

A billet crank starts life as a big bar of steel that is machined down. No heating and beating, just machining.
So a billet crank would be considered of cast material. I think I remember that the early 911 cranks were not forged. An amazing video. Saw a similar set on forging the Fuchs wheel. My first thought while watching the heating and pounding, other than an environment where one could incur a life altering injury, was the constant maintenance that must be required for those types of equipment. I had heard, true or not I don't know, that the later G bodied cars, 88 and 89 I suppose, had alignment issues. Due I was told to worn out chassis jigs at the factory and Porsche was reluctant to retool due to that car coming to the end of its run. I appreciate the feedback. Bob
Old 06-20-2025, 03:55 PM
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