What is the formula to calculate the blower speed taking into account the engine RPM and pulley sizes.

I believe the stock lower is 7.5", upper is 2.93" and the blower speed at 5400 RPM is 13,500

I wish to calculate blower speed based on different pulley combinations.

Thanks,
Dion

 

A fellow LOOM member, RedComet, came up with this spreadsheet to calculate blower speed, psi.

http://www.nloc.net/forum/showthread...threadid=30421

BTJ

 

Lower pulley divided by upper pulley times RPMs.

There is a bit of variance from tuner to tuner as to the exact diamter of the pulley where the belt contacts the pulley as well as OD.

I'd love to get a list of all the tuners pulleys with the OD, ID, and Lip sizes...

 

Andy W created that spreadsheet a couple years ago.
Corey from Loom mentions that the spreadsheet was originally on My site. Not sure why he decided to rehost the file but oh well..

Doug

 

My apologies for the oversight. Good Plagiarism though! Thumbs up to Andy W.

BTJ

 

Thanks a million guys! This really helps.

Muchas Gracias

Dion