EAST coast 94 or 95 octane pump gas?
Out here we can get 100 unleaded at a few Unocal stations. THAT is pump gas. It knocked on even that fuel. The combo with the 509 would run full throttle without detonation on 100, but as was the goal from the start, I am not interested in chasing down the race gas suppliers to feed this car. I am limited to using 91 octane that is made with "Up to 10% Ethanol".
I keep reading how Joe Blow from Idaho was able to run 2 points higher than me while using pump gas....ON A DYNO. Great! Steady cool fuel, a controlled environment, an engine with plenty of airflow around it ingesting 70 degree air.... Lots of favorable factors in play. Engines in cars will run different when they are smothered on 3 sides by a hood and fender aprons. Yeah, I could have played with the timing curve more and maybe achieved the goal...barely. I decided to go with an option that will guarantee the results that I wanted.
Just for grins, help me out with this:
If the heads were lightly resurfaced 3 times at .006 each time totalling .018, couldn't THAT number be calculated to determine compression ratio? In short, my pistons are .017 in the hole at TDC. If the heads were milled a similar amount, wouldn't the CR be almost the same as if I had the block zero decked?
