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kenikh kenikh is offline
3 restos WIP = psycho
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Join Date: Feb 2005
Location: North of Exit 17
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Originally Posted by stownsen914 View Post
It could be done, but I would think there would be risk involved. Magnesium is not the most stable metal. I swore off magnesium cases after one cracked on me. That case was shuffle pinned, has Timeserts, and all the other mods. I went with aluminum after that and haven't looked back. My .02, I would think you can find the 15 or so pounds in other, less risky ways.

I am curious what the stroke and bore was, how much power it was putting out and what the top RPM was.

My research tends to reflect that the vast majority of cracking in mag cases happens at the reinforcing webs and at the spigot bores. The most common direct correlations between failure are:

70.4mm and longer cranks
92mm and larger pistons
Peak RPM of 8000 and higher

Each of these also seem to exacerbate the other.

- 1965 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 02-11-2010, 07:13 AM
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