Thank you for the information

Thank you very much for all of your help, especially aeronut and the report found. If anyone has any moore information it would be very much appreciated

Additional Trick Question: We the engine blocks/cores of the 213A, the 213 E series and the 213F idential or did they differ in changes, tolerances/ dimensions. I belive the E and F may have been identical, but not sure abou the A model series.

Any information or insight would be appreciated

Looking through the reports the RAE didn’t seemed to be bothered with the crankcase materials but the rotating parts are usually fully investigated. However I found the following in RAE report EA M80.

“The crankcase of Jumo 211F1 engine No 514 was found to be a silicon-aluminium alloy casting similar to M.V.C. alloy (DTD 231) The diamond pyrimid hardness of a sample cut from the crankcase was 97-99, and the composition was as follows:-

Silicon 8.60%
Copper Trace
Nickel Nil
Magnesium 0.13
Iron 0.72
Manganese 0.35
Titanium 0.05
Zinc Nil
Cobalt Nil
Aluminium Remainder

A similar alloy was used for the crankcase and cylinder head (Cylinder block) of a Jumo 211A1 engine.”