Quote:
Originally Posted by redondoaveb
On the supercharger side if you change pulley sizes the only thing you might have to change is the idler pulley size, not belt size. I have the 3.47 jackshaft pulley with the 3.00 sc pulley. I'm using the 2.50 idler pulley. If I went to the 2.85 sc pulley with the 3.47 jackshaft I'd probably change the idler to a 3.00.
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Okay.
So what I'm getting from this information is:
Total area the belt surrounds with your current setup of:
- 3.47 Jackshaft SC sided pulley
- 3.00 Direct SC Blower pulley
- 2.50 SC Idler pulley
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Total: 8.97" inches of area that the pulleys are using up from the belt and it seems to work fine.
Then you said if you changed the 3.0" down to a 2.85" Direct SC Blower pulley, to compensate for the loss in size, you have to change another pulley and that pulley of choice would be your idler size -- and to upgrade it in size at that which you said a 3.00" idler pulley would do it.
This would give you a total of 9.32" inches of area that the pulleys would use up as opposed to your previous setup of 8.97".
I assume the idler pulley could be adjusted to compensate for the difference of .35" of area between the two setups?