I bought a used jrsc for my b18c. The pulley on the nose of the supercharger is 4.2. The guy I bought the kit from says it is at 8 psi.

I thought 4.2 was the stock pulley yielding 6.5 psi.

If im right about this, could an idler pulley be different than stock? If so how do I tell on those?

I need to know because if its all stock I won't get crome, if its 8psi then I am going all the way.

Let me know,

Thanks

 

Anybody?

 

bump