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Supercharger pulley size help

Old 12-08-2010, 03:28 PM
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Default Supercharger pulley size help

Hi, I have a 99 NB with a BRP supercharger using Eaton M62 Blower, 4 rib.
I am looking to replace my pulley. I was wondering what size of pulley should I use if I want good mid to high range power. My car does not have intercooler and it is currently running the non adjustable power card. My current pulley is not straight, so I needed it replaced anyways.

And if you have a link to where I can buy this pulley, that would be even better!

THanks
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Old 12-08-2010, 03:31 PM
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I'd recommend an exhaust driven pulley.

or you could do little research and realize that BRP was bought by these guys, and they sell pulleys now.
http://www.stageonetuning.com/miata-...ger-parts.aspx
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Old 12-08-2010, 03:44 PM
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Wrong section for this post. You'd be better off in the supercharger section for any questions if for no other reason than to mitigate any snide comments from those with turbos.

To answer your question you can go here:

http://www.trackdogracing.com/websit...lley_chart.htm

A word of warning, do not go much smaller without a better fueling/timing solution and an intercooler or water injection.
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