What Years/Size Case Is This ?

[RarlyL8]

About 4 years ago I purchased a truckload of misc Porsche parts from a mechanic who was retiring. Most of it is probably junk. All this stuff is still boxed up from the move to Alabama and I am just now starting to go through it.

One of the items is an extremely grimy case. Just curious as to what it is, here are the numbers:

901.101.102.7R

What years was this case produced? If memory serves the "7R" is a magnesium pre-SC case. What displacement?

[buster73]

Same case number than on my 73. Guess it was produced from 72 to ca. 76. But sure someone out there will have the exact numbers.

[Jubbie]

Can you find the engine number stamp on the passenger case side between the fan and where the oil pressure transducer is? It should read 9XX/XX. From that, I figure you will know exactly what it is

[RarlyL8]

Doh!
I knew that. The pile of grimy parts overwhelmed the common sinse portion of my brain this morning. My B. Anderson book lists type numbers so I'll look it up. Maybe I can get back out to the garage this evening, I'll post the engine number for anyone interested as well.