Thread: Max Supercharger RPM's
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Old May 10, 2010 | 06:51 PM
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tighed1
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Joined: Aug 2008
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From: Sierra Vista, Arizona
Default Re: Max Supercharger RPM's
Hey don't forget the 192mm pulley guys!

192mm : 74mm = 2.60 Ratio
192mm : 65mm = 2.95 Ratio

Here's Brian's original post.


Originally Posted by BrianBrave
I just got off the phone with Ed Martinez from PSE Superchargers. Great guy to talk to...

The MAX RPM our SC can spin is 20K but that will distroy it quickly.
MAX safe SC RPM is 15.5K to have any chance of a long life.

Let's calculate SC RPM.

Crank / SC = (Ratio) * Engine RPM = SC RPM

155 / 74 = (2.10) * 5.8K = 12,180 SC RPM (Factory)

178 / 74 = (2.41) * 6K = 14,460 SC RPM

181 / 74 = (2.45) * 6K = 14,700 SC RPM

185 / 74 = (2.50) * 6K = 15,000 SC RPM

Code 3 pulley = 65mm (so I've read)

155 / 65 = (2.38) * 6K = 14,280 SC RPM

178 / 65 = (2.74) * 6K = 16,440 SC RPM

Raise your rev-limiter over 6K when you tune and then re-do the math.

BTW - Ed said they re-manufacturer our SC's for $1,495 + Shipping.
They send you a crate that will secure your SC to ship back to them in.

It all depends on risk and if you think your ECU will adjust fuel maps beyond 21 PSI.
 
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