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FE Technical Forum / Re: What would you do.
« on: August 28, 2015, 06:44:17 AM »
Personally, Jim, I think you'll be on the ragged edge of being able to run high octane pump gas with that combo. If I were building this engine, I would shoot for around 9.5-9.7 SCR and eyeball the DCR so that it doesn't get over 8.
I haven't ran your numbers, but maybe you can manipulate the specs and cam timing to give it a good quench distance but not be on the fence as far as compression. The difference in hp from 9.5 to 10 is going to be negligible, but if it's on the edge and likes to ping you'll be glad you went conservative on the numbers.
I haven't ran your numbers, but maybe you can manipulate the specs and cam timing to give it a good quench distance but not be on the fence as far as compression. The difference in hp from 9.5 to 10 is going to be negligible, but if it's on the edge and likes to ping you'll be glad you went conservative on the numbers.