Supercharger pulley ratio's
Posted: Tue Jun 30, 2009 2:29 am
I know this was touched upon on Rob's thread but want to confirm it.
Will altering the outer pulley size of the double alternator pulley (the one driving the supercharger) have any effect?
In my mind it wont as the crank pulley size and inner alternator pulley (the one driven by the belt) are a constant and seen as the the supercharger is driven off the outer part of the custom double pulley varying its size wont have any effect as it will still be turning at a relative same speed due to the constant crank/original alternator pulley ratio.
I know altering the inner alternator pulley size would effect the speed as its the one driven by the belt but cant see altering the outer pulley on the double pulley having any effect on the supercharger speed.
If im correct ill have to fit a smaller supercharger pulley to create more boost as it cant be done by increasing the outer pulley on the double alternator pulley.
Will altering the outer pulley size of the double alternator pulley (the one driving the supercharger) have any effect?
In my mind it wont as the crank pulley size and inner alternator pulley (the one driven by the belt) are a constant and seen as the the supercharger is driven off the outer part of the custom double pulley varying its size wont have any effect as it will still be turning at a relative same speed due to the constant crank/original alternator pulley ratio.
I know altering the inner alternator pulley size would effect the speed as its the one driven by the belt but cant see altering the outer pulley on the double pulley having any effect on the supercharger speed.
If im correct ill have to fit a smaller supercharger pulley to create more boost as it cant be done by increasing the outer pulley on the double alternator pulley.