plev72
Registered User
Hey all, can someone give either a link or an explanation up the advantages and disadvantages required the boost vs compression situation.
I understand that the higher the compression, the less boost you can have.
What are the advantages to going either way? The things I assume intuitively are the following (but could be wrong):
Lower compression (assumably) would require boost more often and to a larger degree because the engine has less HP independant of the supercharger to accelerate or to maintain a given speed. For the speeds that can be supported by the engine with lower compression, when no boost is being used, I would assume the engine would get better gas mileage. Also, assumably it should be possible to advance the timing because there is less likelihood of detonation due to the reduced compression.
Higher compression and lower boost would assumably put less wear on the supercharger and make the engine work more. Assumably this would slightly reduce gas mileage but increase supercharger life. Also, timing would have to be retarded.
Anyway, guess my questions are these...
1) what did I get wrong
2) what did I miss about either the lower compression or the higher compression
3) Since I'm doing a rebuild, which way is a better way to go? I'm assuming that if a go with the thicker headgasker or the bowled pistons that I won't have any problem running the 10% pulley from now on... but is that the best way to go?
Thanks,
Paul
I understand that the higher the compression, the less boost you can have.
What are the advantages to going either way? The things I assume intuitively are the following (but could be wrong):
Lower compression (assumably) would require boost more often and to a larger degree because the engine has less HP independant of the supercharger to accelerate or to maintain a given speed. For the speeds that can be supported by the engine with lower compression, when no boost is being used, I would assume the engine would get better gas mileage. Also, assumably it should be possible to advance the timing because there is less likelihood of detonation due to the reduced compression.
Higher compression and lower boost would assumably put less wear on the supercharger and make the engine work more. Assumably this would slightly reduce gas mileage but increase supercharger life. Also, timing would have to be retarded.
Anyway, guess my questions are these...
1) what did I get wrong
2) what did I miss about either the lower compression or the higher compression
3) Since I'm doing a rebuild, which way is a better way to go? I'm assuming that if a go with the thicker headgasker or the bowled pistons that I won't have any problem running the 10% pulley from now on... but is that the best way to go?
Thanks,
Paul