So I've searched, and searched, and haven't found a solid answer.

I just ordered a Comptech kit with the AP1 pulley on it. I want to go with a stock sized AP2 pulley for now, so my understanding is 4.2" which will make 6 PSI. I wouldn't mind running 7 psi if I could get away with it safely with the Comptech FPR, Walbro fuel pump, and stock injectors.

So, where can I find a standard AP2 sized pulley for Comptech? I emailed Comptech, but they are currently out. I looked at Superchargersonline.com and I see pulleys for the Paxton Novi 1000 but they are listed for Mustangs, does that matter?

http://superchargeronline.com/product_list...=paxton_pulleys

I also see Horse Power freaks sells some too...

http://www.horsepowerfreaks.com/partdetail...r_Pulleys//5759



So what would be the closest pulley to an AP2 stock Comptech pulley, or 7 psi if I can run that safely?

Also, does anyone know which belt size I'd need to run?

Thanks!

 

http://scienceofspeed.com/products/engine_...000_SC_pulleys/

i think ur lookin for the 4.2" pulley

 

^ yea that would be about right... Im pretty sure stock is 5.5lbs.


I love seeing your sig blucky with that 400 mark, Are mods are very similar just have to get my ems and tune and i can drop the 3" and keep my fingers crossed lol.

 

who are you getting tuned by?

 

Jeff Evans in PA

 

you should get it! 3 inch pulley ftmfw

 

Do guys know where to get a 4.2" pulley? Or 4.3"? Comptech says it's 4.3" for the stock AP2 size, SoS says 4.2. Would those pulleys from Superchargersonline or HPFreaks work? Belt size?

 

as long as the pulleys are for the novi 1000 i don't see why they wouldn't work. as for belt size i can't help you there, id say put the pulley on and measure it and park outside autozone and try diff size belts.

5lbs of boost? not even sure if i'd be able to tell the difference between that and stock...

 

I'm shooting for 6-7psi, but not sure what pulley will get me there with just the Comptech supercharger and aftercooler. I won't be doing bigger injectors/EMS/tune till later this summer.

 

According to this thread...

https://www.s2ki.com/forums/index.php?showt...&#entry15061390

I'll be fine with running a 4.0" pulley to get roughly 7psi on an aftercooled kit. I can just mess with the FPR and will be fine.


According to this thread..

https://www.s2ki.com/forums/index.php?showtopic=254159

I will need the Gatorback 4060390 belt, as seen here.

http://www.summitracing.com/parts/GTR-4060390


Can anyone please confirm this before I order?

Thanks!