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1071 compression ratio?
Posted: Sun Nov 18, 2012 2:19 am
by mniwagn
hello if you used the flat top pistons through the special tuning section on your rebuild what would your compression ratio be with a std 163 head? my 1071 was rebuilt in the late 70's here in California and has flat top pistons. It's never been fired as the fellow never finished the build to reinstall it in the car. thanks
Re: 1071 compression ratio?
Posted: Sun Nov 18, 2012 6:24 am
by Spider
Stock they were 9.0:1 (according to the factory workshop manual) and the pistons had a 8.4 cc dish. Fitting flat tops would therefore bring to CR up to 11.6:1.
Re: 1071 compression ratio?
Posted: Sun Nov 18, 2012 10:23 am
by mniwagn
Wow that's pretty high!! thanks Spider
Re: 1071 compression ratio?
Posted: Sun Nov 18, 2012 11:23 am
by Spider
Your welcome, I hope it's some help!
Re: 1071 compression ratio?
Posted: Mon Nov 19, 2012 7:50 am
by olddad
That's 1 part 110 race gas to 3 parts non ethenol unleaded.