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Pulley kit= more hp?

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Old 12-11-08, 03:44 PM
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Pulley kit= more hp?
SR Motorsports has an underdrive pulley kit for our cars. Ive heard mixed results about pulleys in general, does anyone know or have any experience with them for fc's? Im wondering if the 10 hp it claims to gain is at the wheels(cant imagine).

http://www.srmotorsports.com/sr86plly.html
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Old 12-11-08, 03:49 PM
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10 at the wheels is prob out of reach. mabey 10 to the crank. no experience on these pullys but with other underdrive pullys
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Old 12-11-08, 04:01 PM
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one thing for sure is your car will rev alot easier ...
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Old 12-11-08, 04:03 PM
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im just trying to decide if its worth the $400
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Old 12-11-08, 04:12 PM
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You will probably have charging problems with the reduced alternator speed.
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Old 12-11-08, 04:16 PM
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like with a/c and sound system? as long as it doesnt effect the battery... i could take out the a/c to save some weight anyways
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Old 12-11-08, 04:37 PM
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From what I've read, underdriving the waterpump is not a good idea... Especially with a stock cooling system.
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Old 12-11-08, 04:44 PM
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Underdriving the water pump is a great idea on track cars. The pump cavatates at high RPM so slowing it down will increase your cooling efficiency. I would not do it to a street car though as the lower pump RPMs will cause the car to run hotter in traffic and when driving normal.
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Old 12-11-08, 10:00 PM
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I have a one piece crank lightweight under drive pulley. New $85
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Old 12-11-08, 11:09 PM
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If you're going to **** away money @ SRmotorsports would you mind buying me their $100 acorn nut for my Alt?
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Old 12-11-08, 11:41 PM
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A few hp maybe, highly doubtful that you'll get even close to 10hp from them, but on a street car, like others have said, it'll compromise the charging and cooling systems.
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Old 12-12-08, 07:00 PM
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Originally Posted by Turbo II Rotor
Underdriving the water pump is a great idea on track cars. The pump cavatates at high RPM so slowing it down will increase your cooling efficiency. I would not do it to a street car though as the lower pump RPMs will cause the car to run hotter in traffic and when driving normal.
+ underdriving the weak FC alternator will most likely cause problems on a street car.

Originally Posted by millertime6009
im just trying to decide if its worth the $400
Only on a track car or a show car.
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Old 12-12-08, 07:05 PM
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Originally Posted by Turbo II Rotor
You will probably have charging problems with the reduced alternator speed.
Originally Posted by Evil Aviator
+ underdriving the weak FC alternator will most likely cause problems on a street car.
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Old 12-12-08, 07:10 PM
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WASTE OF MONEY! Buy more important things before this garbage! $400! Hell no, i can think of many things to mod before this....
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