#11757, "Underdrive Pulley's...Which one should I get?"
I'm at 61K miles, and need to replace my timing belt. Since I'm going to be breaking it down, I might as well replace the underdrive pulley. My question is, is there a difference between getting the AFX, or the Unorthodox pulley's? If there isn't, can someone supply me a link to the AFX pulley for $159. Also, will the lightened pulley cause stress on the crankshaft? I've read in a few places that the stock pulley is heavy for a reason?
Perf: KYB AGX Struts Neuspeed Sport Springs 5 Strut Bars (2 F/U, F/L, R/U, R/L) Sprint Front Camber Kit $15 Rear Camber Kit Corbin's A/F Gauge MSD DIS-2 Ignition System Some Regrind Cams that need High Compression (which I don't have) Ported Intake Manifold Ported Throttle Body Drop in K&N Filter and open airbox Custom 2 1/2 inch exhaust with Dual DTM Muffler Empty Catalytic Convertor Energy Suspension Motor Mount inserts Hurricane_GS Short Shifter Symborsky Shift Kit Clutchmasters Stage 3 Modular 225/50/16inch Wheels and Tires
Audio: Alpine CD Head Unit Alpine Flex4 25W X 4 for Fronts and Rears Alpine V-12 450W X 1 for Subs Infinity Reference Series 5 1/4 and 1 inch tweeter component systems for fronts and rears Blaupunkt 3 way 6x9's in the rears 3 MTX 5000 10" 12 ohm subs running 4 ohms mono
Flame Red SRT-4 GT40,8.5:1 Built Shortblock, Brian Crower Stage 2 Cams, etc etc etc...
#11759, "RE: Underdrive Pulley's...Which one should I get?" In response to Reply # 1
Yeah, the article I was reading was about the Saturn crankshaft, and the consequences of changing the pulley. But I noticed on here that it's the way to go for a good hp gain. How much hp does it add on average?
Perf: KYB AGX Struts Neuspeed Sport Springs 5 Strut Bars (2 F/U, F/L, R/U, R/L) Sprint Front Camber Kit $15 Rear Camber Kit Corbin's A/F Gauge MSD DIS-2 Ignition System Some Regrind Cams that need High Compression (which I don't have) Ported Intake Manifold Ported Throttle Body Drop in K&N Filter and open airbox Custom 2 1/2 inch exhaust with Dual DTM Muffler Empty Catalytic Convertor Energy Suspension Motor Mount inserts Hurricane_GS Short Shifter Symborsky Shift Kit Clutchmasters Stage 3 Modular 225/50/16inch Wheels and Tires
Audio: Alpine CD Head Unit Alpine Flex4 25W X 4 for Fronts and Rears Alpine V-12 450W X 1 for Subs Infinity Reference Series 5 1/4 and 1 inch tweeter component systems for fronts and rears Blaupunkt 3 way 6x9's in the rears 3 MTX 5000 10" 12 ohm subs running 4 ohms mono
Flame Red SRT-4 GT40,8.5:1 Built Shortblock, Brian Crower Stage 2 Cams, etc etc etc...
#11762, "RE: Underdrive Pulley's...Which one should I get?" In response to Reply # 4
I have the Unorthodox Racing one (street version) and I really like it, but I don't think that it is worth the extra $80 - $100 (depending on where you get it) over the AF/X one. One really nice thing about it is; the pulley is actually two pieces, a hub (that is mounted to the crankshaft) and the actually pulley (which is mounted to the hub). So, later you can purchase the race pulley (which only turns the alternator, but is lighter and is a 40% underdrive) and remove the street pulley from the hub and bolt the race pulley up and never have to mess with the crankshaft.