OK gang the last question was so much fun, how about this one?
I vintage race a TR4. I am running 10.5:1 compression ratio, as I have
on all my engines in several different types of cars, and have never
suffered an engine failure in 30 years, believe it or not, except for a
broken TR3 crank which is a different matter. I also have had only four
dnf's in all those years, and always ran in the front third of the pack
in regionals, trophying in half the races entered.
If I build a "killer" motor, give me some advice on compression ratio.
Assume that my headers, carbs, ignition, etc is all top drawer, and that
I run 104 octane leaded racing gas. My questions:
1. What is a top compression ratio that will let my engine continue to
live?
2. How much power increase should I expect by changing from 10.5:1 to a
higher ratio?
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