Hi Guys,
As was mentioned, if the engine is operating over 3,000 rpm for - extended periods - then some wear would occur, this would still happen even if you were running with a period fuel mix. Modern engines have been designed to withstand running with throttles wide open at highway speeds for extended periods, they also have much higher compression ratios.
The very high temperatures are only generated at the wide open throttle settings. This does not mean you cannot operate your WW2 vehicle above 3,000 rpm for short or reasonable periods, after all, different engine designs ( porting for instance) tuning and etc will produce differences in internal temperature. Just don't try and drive as if it were a modern vehicle capable of modern road speeds, they were not designed for it and cannot stop as do modern vehicles. We have seen the ugly results of that.
If you want to witness the heat generated even by a low compression engine, drive a cmp up a long steep climb at night with the engine cover off. At full throttle under load the exhaust manifold will start to glow red, then orange, then yellow. Not sure those in Holland have access to hills for this test.
Enjoy them while in your care,
Dave
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