Torque/RPM vs. PSI Chart for Power Adders

[pantheroc]

Is there any information that states the torque/rpm requirement, at the power adder pulley, for a given PSI on belt driven power adders?

[KillJoy]

I dunno???

At ~6500 RPM, my Vortech (using a 3.60" Pulley) produced 10.2 lbs of boost.

Does that help any???

KillJoy

[Leadfoot281]

As I understand it, air pressure at sea level is about 15psi. We're basically standing at the bottom of an ocean of air.

7.5 psi boost should theoretically increase HP and TQ by 50%. But that assumes no frictional drive loses from the blower. That also doesn't take into account air density, temperature or humidity.

And every blower is different with different efficiencys. Some heat the air more than others. Every engine is different as well. Some cylinder heads are more efficient and less prone to detonation. Aluminum Vs Iron, 2 valve Vs 4 valve also play a part in power output.

I think there are far too many variables to make a reliable chart. I'd say 8psi boost should be good for about a 50% increase, roughly.....

(correct me if I'm wrong folks!)

[pantheroc]

no no...thanks for the answers...but I was looking for the torque at the power adder shaft and the shaft rpm where the pulley mounts. I think only the manufacturers have it in their internal docs.?.

[KillJoy]

Possibly, internal only.

KillJoy