fatcatbestcat
Professional Hack
- Joined
- Oct 1, 2019
- Location
- Mississauga, ON (Canada)
Pending my hoist's delivery and assuming the weather holds, I'm going to be yanking the carb-converted B20F out of my 144 for a partial rebuild. While the head's off, I'm going to be taking it to my machine shop to have the spring seats enlarged for Iske double springs.
I figure while I'm there, I might have the bottom surface of the head milled for a bit more compression, but I'm not really sure how much I should have taken off.
I'm doubtful at this point that the car's going to be daily driven, so it would probably be fine running on 93 or 94, but that's not always available at any pump, anywhere. The flexibility of 91 would be nice, in case I ever take this further than around the block.
Any advice would be helpful.
EDIT: For reference, this is a B20F with probably 8.7:1 compression, and I'm looking anywhere between 9.5:1 and 10.5:1
I figure while I'm there, I might have the bottom surface of the head milled for a bit more compression, but I'm not really sure how much I should have taken off.
I'm doubtful at this point that the car's going to be daily driven, so it would probably be fine running on 93 or 94, but that's not always available at any pump, anywhere. The flexibility of 91 would be nice, in case I ever take this further than around the block.
Any advice would be helpful.
EDIT: For reference, this is a B20F with probably 8.7:1 compression, and I'm looking anywhere between 9.5:1 and 10.5:1