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Topic Review (Newest First)
07-07-2012 01:48 PM
blackfocus2k4 so i was looking at the instruction book and the kit i came with came with a 99" belt which means it was for the old style Alternator bracket. But why would this blue pulley which is supposed to be 2.5" be the same as the 3" pulley that was originally on the Supercharger. Thoughts?
07-07-2012 12:59 PM
blackfocus2k4 and both pulleys are the same
07-07-2012 12:59 PM
blackfocus2k4 They dont make a 103.5" inch belt in 6 ribbed. Largest is 103"
07-07-2012 12:56 PM
ThatOneFocusGuy So both pulleys measure the exact same? BBK belt is a 103.5" not a 103". Try a 103.5" belt with the blue pulley.
07-07-2012 08:18 AM
blackfocus2k4 Aggravation if anybody can help much appreciation will be given lol
07-06-2012 10:27 PM
blackfocus2k4 I hit the Blue pulley with a digital caliber and this is what i got. This is the measurement of the inside of the top of the pulley ridges diameter

and this is the overall outside of the pulley diameter.

The problem is the black pulley is the exact same size we put on the 104.5 inch belt which is made for the 3" inch pulley and it fit perfect. We tried putting the 103" inch belt on this and it did not work. any thoughts i need some help!
07-06-2012 09:43 PM
ThatOneFocusGuy Send me a PM about a pulley. I may be able to help you out.
07-06-2012 09:27 PM
blackfocus2k4 well here we are so far went back to the regular pulley will have to find a 2.5 inch now


hopefully will be wrapping up tomorrow and tuning once the rest of the exhaust is in and the gauges are wired. I am really disappointed about the blue pulley not being the BBK 2.5 pulley does any one know where to find one???
07-06-2012 09:14 PM
..:: sleestak ::.. I think the pulley that come with the kit is 5psi (?) The blue one should give you around 10psi.

Sent from my MB855 using FF Mobile
07-06-2012 06:46 PM
blackfocus2k4 so after getting the 103" inch belt. we were still having trouble and measured the pulleys i have a blue pulley that i bought part of a new BBK and it measures the same size as the black one we took off the supercharger. Any thoughts i am thinking i have the wrong pulley so we are going to be putting the black one back on. What PSI should i be getting with the regular pulley
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