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I went ahead and took the kooks high flow cats off and replaced them with a new TSP Y pipe into the magnaflow cat back and you wont believe this but i went from 10-11 psi when i dynoed the car to 4.5 psi @ 6500 RPM !!! To anyone who doesnt think that high flow cats are restrictive this is proof!!! I lost 5.5 psi on average just taking those hi flows off!!! Still amazes me.
Now that makes more sense. We knew you were making too much boost with that setup and that large of a pulley.
I believe the general rule of thumb is .1" smaller of pulley diameter=1 psi. I'd personally go with whatever the next size down is that has a standard belt size based on length. I was in between 2 belts and it was a PITA finding something.
I believe the general rule of thumb is .1" smaller of pulley diameter=1 psi. I'd personally go with whatever the next size down is that has a standard belt size based on length. I was in between 2 belts and it was a PITA finding something.
Thanks that makes sense. I didnt think about the belt sizes
With your combination I'd go with a 4.25 8 rib pulley. With the ProCharger 8 rib J Bracket and the standard 8 rib 7.65 crank pulley, you would need a 40.8" long belt. Bob
__________________ ATI ProCharger and Moser Sales 260 672-2076
With your combination I'd go with a 4.25 8 rib pulley. With the ProCharger 8 rib J Bracket and the standard 8 rib 7.65 crank pulley, you would need a 40.8" long belt. Bob
I was thinking either the 4.25 or 4.13. Any reason you wouldnt recommend the 4.13?
I was thinking either the 4.25 or 4.13. Any reason you wouldnt recommend the 4.13?
For 7 to 8 psi with your engine combination the 4.25 pulley should do it, but the 4.13 could end up being what is needed as there are so many factors that go into what an engine ends up making boost wise. Bob
__________________ ATI ProCharger and Moser Sales 260 672-2076
09-02-2017, 03:57 PM
