I am putting together a 509 BBC, blown, injected on alcohol and want to run 11 or 11.5-1.
My machinist was asking why I want 11 or 11.5-1 and I said, because that's what I have read here on the forums to be the hot set up and it keeps oil dilution down.
We both pondered that for a while and he spoke first, that he can't (and I can't either) figure why a higher compression helps to cut down on the dilution?
If the rings are sealing right, why is there a problem with dilution at lower compression????
I remember years ago watching the World of Outlaws run, after 30 laps they would pull in and the oil was yellow, like calf chit.... This was with SBC and high comp.
So...... why is the higher compression, helping to keep the oil cleaner???
Be good, Jim