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Yep - hence why I noted in my previous post that, especially with a wee bit of modification to the original design, you can achieve "virtually zero belt slippage" with an FPS shaft-driven kit. Here's a few so-so pics of Ben Bentley's '93 ATX with an old "modified" kit:ghostrider said:It seems with the FPS kit, from the pics I have seen of them, you can wrap the belt almost the whole way around the pulley.
sho_sc said:I just got off the phone with Josh at Reichard Racing. He said for anyone interested in a correct cut pulley to give him a call at 1-410-610-5567. He will take down your shipping information and what size pulley you want. The price will be determined by the total number of pulleys ordered. They will be machining new pulleys very soon. He told me to call him on Thursday to follow-up. So I "assume" they will be making them early next week.
So now is your chance .....
twr said:With a 3.4" I was see about 10psi at 8000rpm.
I'm going to a 3.1" with an aftercooler and shooting for 14 psi at 7500rpm. Just to give a couple of round numbers.
Edit: Had to leave a voice mail for Josh, got no answer.
twr said:I'd say 3.0" would be it. But don't quote me. I think Ransom has a 3.0" with an aftercooler and is seeing 16psi at 7400rpm.
How about the newer version? And on an MTX?Axianator said:. . . but when properly modified (beyond the original design), the "original version" shaft-driven FPS kit will also yield virtually zero belt slippage.
jeanrw2000 said:cool, thanks.
I call Josh up from Reichard racing, and it seems he had two people on the list, one for a 2.8 and the other for a 3.1 so since i only like to do this once i went for the 2.8
so i think as it stands righ now there are three of us already in, i think we going to need some more to see a price brake
Lupo said:With my Vortech 3.12 pulley, I was seeing 13psi at 6800.
I then got the Reichard pulley 3.10, so I should be seeing 13psi a little bit sooner.
BTW, I did modify by S/C bracket by relocating the idler pulley, which gave me a little bit more wrap around.
twr said:Judging by that, I should be right at 15 psi at 7500rpm.... well, there goes my "I'm pretty happy with the power the car is making" statement I made earlier this year
sho_sc said:If you want to figure out your impeller speed you can go here:
The SHO Crank Pulley is 5.87"
S-Trim Max Speed is 53K
T-Trim Max Speed is 55K
The catch is that your pulley will slip and you can "disclaimer here" briefly over spin the blower without damage as long as it's "brief" and within reason. I wouldn't be spinning a T-Trim at 60K ... 5% is probably "o.k." .... I personally wouldn't do a 2.8" on a S-Trim and run the engine at 7700 rpm on the track ....
Lupo said:I just called Josh at Reichard, and as of now we have a total of 5 orders:
3 for 2.8
2 for 3.10