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Old 02-21-2005, 06:55 AM   #1
west_minist
Scooby Specialist
 
Member#: 53451
Join Date: Jan 2004
Location: Caribbean
Vehicle:
2000 JDM Impreza SRX
w/ AVCS Silver

Default Perrin Crank Pulley Vs Unorthodox Racing Ultra S lightened underdrive crank pulley

Hi there!

Can anyone tell me if there had any problems with Unorthodox Racing Ultra Street on the subaru at idle and low rpms?

The Perrin one is lightened, but not underdriven.

http://www.kingpinperformance.com/ca...roducts_id=126

I appreciate any feedback to this one.
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Old 02-21-2005, 09:04 PM   #2
BlkTS02
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Member#: 50142
Join Date: Dec 2003
Chapter/Region: South East
Location: West TN
Vehicle:
2002 2.5TS
MBP

Default

IMO it's not worth it to use an underdriven pulley. Stick with stock diameter and you won't have to worry about sourcing replacement belts and the low output from the alternator.

Mr. Josh all the way
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Old 02-21-2005, 09:26 PM   #3
west_minist
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Join Date: Jan 2004
Location: Caribbean
Vehicle:
2000 JDM Impreza SRX
w/ AVCS Silver

Default

Yeah, because right now, when I am @ idle, turning on the lights or even the power window or the radiator fan kicking in, my idle drops a little bit.

I think that I do not need any belts since they can be tensioned using the alternator.
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Old 02-21-2005, 11:56 PM   #4
IllNastyImpreza
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Join Date: May 2003
Chapter/Region: NESIC
Location: East Kingston NH
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DIY project: life
I need more TIME!

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yea....underdriven is the suck.
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