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P-51 and Jays2000ZX3 have both recently posted their compression numbers in the FI forum. They were getting 190 - 200 psi. These are engines that have been boosted for a while.
I've got a very mild NA setup and the last compression test I did was in the 160s - 170s. These were all withing Ford spec but now it seems low.
Why would my engine that wasn't subjected to the forces of boost already be making less compression? Would the cams alter these numbers?
Also, when squirting a little oil in compression in the lowest cam up about 5 psi. That shows some ring wear. Is that too much? If so waht caused it?
I did have some mild occasional detonation even while stock and since installing cams I've had to move up to 89 octane to not detonate. Has anyone else had this problem?
I've got a very mild NA setup and the last compression test I did was in the 160s - 170s. These were all withing Ford spec but now it seems low.
Why would my engine that wasn't subjected to the forces of boost already be making less compression? Would the cams alter these numbers?
Also, when squirting a little oil in compression in the lowest cam up about 5 psi. That shows some ring wear. Is that too much? If so waht caused it?
I did have some mild occasional detonation even while stock and since installing cams I've had to move up to 89 octane to not detonate. Has anyone else had this problem?