I have the Alpine MP45 setup on my Beta II Tib with an AEM FIC for fuel tuning.



I had a lot of problems with belt slip with the 4 rib setup so I changed mine to a 6 rib belt system.



For a while I ran a 2.25" SC pulley and was getting 12 lbs of boost depending on the air temp. With that setup I figured the SC was turning about 16,000 RPM at engine redline. My ECU shuts off the fuel at 6500 RPM.



I currently have a bit larger pulley, can't remember what size, and get 8 to 9 lbs of boost.



I had a couple of steel SC pullies made out of 6 rib alternator pullies, they work great, no belt slip.



I took the SC off after it had around 75,000 miles on it to have it rebuilt, it was seeping some oil from the snout seal. I also wanted to have the case bore coated to help keep the discharge temps down. The High Speed Lab in St Louis MO provides this service and I recommend them highly.



I had been running a water/alcohol injection system for a couple of years and the water had washed the coating off the rotors. They looked like brand new un-coated rotors. The High Speed Lab re-coated the rotors and coated the case bore for me in addition to new bearings and seals in the snout, works great now and according to the High Speed Lab should for at least another 100,000 miles. They use better bearings, seals and coupler than it came with.

 

glad to see you popped in here larry!



i think you had the 60mm pulley that made 8-9psi (according to one of your threads on nt) was that a 4rib?



were any of your 4rib pulleys made from aluminum (aside from the pulleys supplied through alpine)?



are you still running water/meth injection?



how is that southbend clutch? (stage?)



what color was the original coating on your m45? the light grey will come off regaurdless. stiegemeier who is one of the premier eaton rebuilders amoungst the mustang crowd-... they completely strip the grey coating off during their rebuilds.



also how is the car w/ launching/handeling?