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Perrin Pulley
Posted: Tue Mar 08, 2005 5:57 pm
by gustavohuber
So, if the 10-12 hp gain is for real, $120 isn't so bad.. but is the crank pulley off an impreza the same size as off a legacy, as off a wrx? The site that has them for $116 seems to be offering them for the WRX, and I dont want to buy something that won't fit.
Posted: Tue Mar 08, 2005 6:06 pm
by DLC
You won't get 10-12hp, anyone who has a lightweight and/or underdriven pulley can tell you that. It does improve engine response, and may free up some horsepower in first and second gear.
All EJ-engine Subarus have the same pulleys, same size, etc...so it should work. I've had two UOR pulleys, and just installed a Cobb Power Pulley on my 00 GT.
Posted: Tue Mar 08, 2005 6:12 pm
by gustavohuber
Well, mostly I'm trying to eliminate a power gap early on in second, doing the grounding thing next weekend.. and specifically, by engine response do you just mean that i'm going to be constantly reminded that a 120hp n/a engine is not the 200hp engine of my gone-but-not-forgotten vr6 gti?
Posted: Wed Mar 09, 2005 12:22 am
by dzx
It feels a little snappier before you get into boost.
Posted: Wed Mar 09, 2005 12:28 am
by DLC
He has no boost
Ground mod will help. A lightweight pulley will have a very slight effect on how fast the engine revs, probably more noticeable in the low revs and in 1st and 2nd gear, where the mass makes the most difference.
Posted: Wed Mar 09, 2005 2:51 am
by gustavohuber
well then.. I guess that puts me $120 closer to that WRX or R.32 i've been dreaming about.
Posted: Wed Mar 09, 2005 6:20 am
by JasonGrahn
"grounding mod" is crap - it's just a band aid for people who have bad grounds to begin with. didn't someone post up which specific sensors could use additional grounds?
Posted: Wed Mar 09, 2005 6:27 am
by gustavohuber
well, right.. and i think i have pretty poor grounds. just poking around the engine bay with a multimeter shows me that. I didn't mean I was buying a $110 kit for it.. I got some 6 and 10 ga stranded wire, some heat resistant loom, and some crimp on ring ends. I was figuring one big 6ga to the engine block, one to the starter, another to the fender well, and a couple 10ga grounds to wherever there's a mount-grounded sensor.
Posted: Wed Mar 09, 2005 9:51 pm
by dzx
lol. i missed he has a naturally aspirated car, If your gonna do something lightweight, replace the flywheel with a lightweight one or buy yourself a can of nitrous.