Underdrive Pulleys

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Old Sep 7, 2009 | 06:28 PM
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Default Underdrive Pulleys

What underdrive pulleys are you running? I'm looking to buy a set soon and I was curious as to what brands people have had the best luck with.
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Old Sep 7, 2009 | 06:41 PM
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Used to run a SLP... it worked fine
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Old Sep 7, 2009 | 06:53 PM
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were you running a damper with it?
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Old Sep 7, 2009 | 08:25 PM
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Slp...
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Old Sep 7, 2009 | 08:34 PM
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Powerbond 25% is whats on my car.
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Old Sep 7, 2009 | 10:33 PM
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ASP crank only (ran SLP 02-03 had problem, SLP refunded money, think now have good pulley)( son had problem with ASP, they replaced at NC)

running asp last 6 years
Johnny
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Old Sep 8, 2009 | 01:01 AM
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I'm currently running a asp pulley, the dam thing kept on running off. If i were to do it again, i would do the slp. It has a higher lip, correct me if i'm wrong...
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Old Sep 8, 2009 | 08:02 AM
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SLP here. never had an issue with belt retention.

it was a bitch to install though.
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Old Sep 8, 2009 | 08:12 AM
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Originally Posted by slayer_taunu
SLP here. never had an issue with belt retention.

it was a bitch to install though.
i kinda figured it would be. was it hard to get the stocker off or the new one on?
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Old Sep 8, 2009 | 12:50 PM
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ASP, but it'll pitch belts at high RPM.
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Old Sep 8, 2009 | 02:53 PM
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ASP here. Havnt had any problems in a year and a half.
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Old Sep 8, 2009 | 03:40 PM
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this may be a dumb question.. but whats the advantage of an UD pulley? does it put less strain on the motor or what?
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Old Sep 8, 2009 | 04:01 PM
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been running an ASP pulley. have no problems with mines.
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Old Sep 8, 2009 | 04:56 PM
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Originally Posted by TXZ28LS1
been running an ASP pulley. have no problems with mines.
I think i'm gonna go with the SLP. it has taller sides, less chance of a thrown belt.

oh i like your sig by the way and tell my mom i said hi!!
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Old Sep 8, 2009 | 08:40 PM
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Originally Posted by 02ws666
this may be a dumb question.. but whats the advantage of an UD pulley? does it put less strain on the motor or what?
Since I don't feel like typing much, basically it free's up some power. Less strain as you put it is a nice way of describing it. I picked up 8 rwhp and 12 ftlbs on G-Force's dyno when I had mine done. Well worth the money to me.
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Old Sep 9, 2009 | 01:05 AM
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Originally Posted by boostnificent
i kinda figured it would be. was it hard to get the stocker off or the new one on?
no prob getting the old one off, just need a 3 jaw puller. its getting the new one on that sucked. they suggest that you throw it in the oven for a while to get the metal to expand, which is supposed to make it easier to slip over the crank snout. mine just wouldn't cooperate, and i had to bang on it for a while before it would go over the snout. and of course the radiator is in the way, preventing you from getting a good swing at it.

once you get it on enough to get the bolt threaded a bit, you just pull it on with the bolt, which isnt bad... until you gotta torque it down to 250ft-lbs.
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