"Anthony" wrote in message
...
"jtaylor" wrote in
net.ca:


My dad's 63 190d had (from memory) a cr of 21:1. Are today's
diesel
engines any higher?


Yup. But, I am not sure of the exact number. The change to a special
steel
alloy was to prevent melting of the piston at the much increased
compression ratios.


--
Anthony


Steel pistons ? - that's a new one for me !

AWEM