onefastss223

iTrader: (14)

I'm just wondering on the formula to figure out how many rpm's the blower is spinning. I'm running a 3.4" blower pulley and a 7.25" crank pulley. Any help will be appreciated.

thanks,
chris

kp

iTrader: (34)

7.25/3.4*4.1 (blower step up ratio, I'm assuming D1SC)*engine rpm.

onefastss223

iTrader: (14)

I'm running the P1....so ~56000 or so at 6500 rpms?

kp

iTrader: (34)

P1SC and D1SC are the same step up ratio. I get 56827 at 6500 but close is good

onefastss223

iTrader: (14)

This has me all messed up...On the 6-rib setup i was running a 7" CP and a 3.5" BP and made 10psi on the dyno. So that is equivalent to ~53300 rpms? I've picked up about 3000 rpms with the new setup yet i should pick up a little bit correct? By watching the boost gauge I havnt seen it make over 9psi though. Maybe the boost gauge is inaccurate.