lightweight flywheel and crank pully - Subaru WRX Forum
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#1 Old 07-09-2006, 09:04 AM
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lightweight flywheel and crank pully

what are your views on running a lightweight flywheel with a lightweight crank pulley. I have a ACT flywheel now and was thinking about getting a perrin pulley are their any advantages having both or should i just stick with my flywheel?
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#2 Old 07-10-2006, 05:50 AM
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Most people will tell you not to both as the car does need a certain amount of rotating mass.. However, I have the ACT Street Light Flywheel and the Perrin Light Weight Crank Pulley on my car with no issues.. With the Speed Sensor not registering (Hydra wiring harness was off 1 pin) I had issues with the car stalling when slowing to a stop, but once I got the wiring diagram and fixed the speed sensor I have had no issues..

In case your wondering, when the EMS registers the Speed Sensor signal that the car is slowing and you apply the clutch the EMS "blips" the throttle to keep the car from stalling.. Short and ugly explanation but works...

02 WRX.. "It's fun when it runs.. Problem is that it hardly ever does..."
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#3 Old 07-10-2006, 03:24 PM
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On most 02-03, without a stand alone, you will throw a CEL with both. I run the crank pulley, but the not the fly wheel. What are your plans for the car?
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#4 Old 07-10-2006, 07:56 PM
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well i don't know how much i can get out of my setup i have. Im runnin a vf30 with pinks and pump,a utec i have perrin rails sittin here don't know if i need them i was tuned at turboxs 2 months ago 300whp, have the lightweight flywheel and having ra gears installed as we speak,i just don't want to screw up what i have by putting that pulley on.
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