I have finally decided to install my P1 procarger kit since I sold my magnacharger and I have a few belt slip questions on the P1. My stock pulley size is a 4.0 and I would like to know what is the smallest pulley I can reduce down to on the stock tension setup without any belt slip?

Also, are their tensioner mods on the P1 setups to reduce belt slip?

 

If you have the later/revised kit, that has the idlers relocated then you can prob get away with a 3.6-3.5.. If you have the old style you will want to relocate the idlers around to get maximum belt wrap, still use that size.. That is prob the most your going to get out of the 6 rib pulley..

 

I had a 3.5 with my idlers relocated and I didnt have no problems. And it would help to if you got a Reichard Racing RIP pulley.

 

How do I determine if I have the new or old style?

How does a Reichard Racing RIP pulley benefit over stock pulley?

 

Does the plates/mounts have a hook looking cut out that bolts to the blower, or are the plates basically rectangular

 

Pics added.

 

i have a reichard racing 3.4 on my p1 with no slip problems ... this will be for sale soon just to let you guys know...

 

and you have the new style brackets fyi

 

idahoblkss - let me know when you want to sell that pulley

 

So on the new style brackets, nothing can be or "needs" to be done to improve pulley/belt wrap with smaller diameter pulleys?