Smaller pulley than 2.8"

[LoungeLizard]

I am still running very rich with the Psi-Fi kit because of the altitude. Do you think I could run an even smaller pulley because I have so much excess fuel? And if I could, where could I buy the pulley? I can't remember what my afr is, but I have been known to shoot a little black smoke out my exhaust and have even gotten a little bit of fire out of the tail pipe. (So i'm told)

[clevelander2002]

I thought the 2.8 was hitting pretty close to redline for the SC. I could be wrong though.

[ExHondaMan]

I wouldnt go any smaller.... that supercharger is really flying with that 2.8...I think you would definitely be risking it...

[blueredline]

I don't know about the blower rpms, but I was thinking of going smaller as well. Of course if it is possible? Johnny Lightning performance has a 2.7' pulley for the m112, but I personally do not know if this will fit the m62? Anybody know

[MotorMouth]

Originally Posted by blueredline

I don't know about the blower rpms, but I was thinking of going smaller as well. Of course if it is possible? Johnny Lightning performance has a 2.7' pulley for the m112, but I personally do not know if this will fit the m62? Anybody know

The blower pulley diamater is not a good way to compare what will and will not work since not every crank pulley is the same diamater. The Lightning for instance has a very large crank pulley compared to the RL, so they may need a smaller pulley to achieve a given rotor speed. That and the fords are 8 rib as I recall.

On a side note, I would not spin the blower any faster than the rotor speed that the 2.8 produces.

[blueredline]

thanks for your knowledge on this subject matter!I'll keep the 2.8

[Sp00ner]

The crank pulley would have to be different, since the blower's max rpms go down as the size of the blower goes up. The M90 or M112 only has a 12,000 rpm top speed.

[crazybrew609]

ONLY 12,000 RPM's.... holy crap thats fast... thats going into 2 stroke speeds

[LoungeLizard]

Originally Posted by crazybrew609

ONLY 12,000 RPM's.... holy crap thats fast... thats going into 2 stroke speeds

I believe ours is 14,000RPM's

[Ydtrack]

At some point you will go beyond the volumetric efficiency of the M62 blower.