- Thread starter
- #51
pneumo
20+ Year Contributor
- 3,763
- 61
- Oct 19, 2002
-
Bay Area,
California
Those plugs don't lie. That's knock for sure. Don't be afraid of lower timing, it's better than constant knock.
I'm not sure how others are running 22* timing with E85. Maybe they're at low boost? Maybe they have lower compression ratios? BTW I'm using 9.0 comp pistons with a shaved head and block.
My turbo doesn't push oil. I have good crankcase ventilation and the valvecover vent does not go to the intake, which is a common source of oil. There is an air gap between the turbo oil seals and the bearings, so high pressure oil will become unpressurized once it leaves the bearings, so high oil pressure should have no effect on the seals.
I'm not sure how others are running 22* timing with E85. Maybe they're at low boost? Maybe they have lower compression ratios? BTW I'm using 9.0 comp pistons with a shaved head and block.
My turbo doesn't push oil. I have good crankcase ventilation and the valvecover vent does not go to the intake, which is a common source of oil. There is an air gap between the turbo oil seals and the bearings, so high pressure oil will become unpressurized once it leaves the bearings, so high oil pressure should have no effect on the seals.