I've kind of thought about this myself...even thought about the 3.2 one :D So don't they run 5lbs of boost with the 4" pulley? I guess they run that with a smaller pulley because they have a power steering pulley to connect to..unlike us. So if they have 5lbs of boost at a 4" pulley and when they put a 3.2" pulley on and get 7lbs of boost, I'd say that every .4 is worth 1lb of boost? Not sure if I'm right or not on this. I'm sure there's a formula.Originally posted by spider883
for those of us with the jrsc u know we have a 4.4" sc pulley that makes 5.5lbs... some of u may know that the street version for the rsx-s comes with a 4" pulley and there race version comes with a 3.2" pulley.. so what im thinking of doing is buying a used 4" pulley off someone that got the 3.2" one and put it on and see what boost it will run.. might only give an extra .5-1 lb so it wont hurt the engine since with the jr powercard it makes the engine run rich anyways.. thoughts? comments?
Anyway, if you get their 4" pulley, that would indeed mean you would end up with about 6.5...or 1lb over what you get. I haven't hooked up my boost gauge yet, so I'm not sure what I'm getting.
But before you do get that pulley, I'd look into making sure you are indeed running rich...which I'm sure we are, but to be safe, jump on dyno and get an a/f read out..then figure out if you want it. I hear it's easy to replace, just remove the passenger side headlight to get good access.
Bookmarks