Underdrive Pulley
Underdrive Pulley I'm wondering what underdrive pulley I should go with - if any at all.
After seeing a few cases of people breaking timing chains with the ASP pulleys, I've become a little skeptical of them. I'm wondering if anyone could give me some insight as to my best option for a pulley...or even if I should run one at all.
The car is an LS1 Formula M6, with TEA TFS 215 heads, a custom ground (very aggressive) camshaft, and all supporting mods (lifters, oil pump etc.)
Thanks!
Edit: I'm not sure if this would be better suited for internal engine, since my main concern is not breaking a timing chain. Mods, feel free to move it if you feel the need to.
After seeing a few cases of people breaking timing chains with the ASP pulleys, I've become a little skeptical of them. I'm wondering if anyone could give me some insight as to my best option for a pulley...or even if I should run one at all.
The car is an LS1 Formula M6, with TEA TFS 215 heads, a custom ground (very aggressive) camshaft, and all supporting mods (lifters, oil pump etc.)
Thanks!
Edit: I'm not sure if this would be better suited for internal engine, since my main concern is not breaking a timing chain. Mods, feel free to move it if you feel the need to.
Hell yes dude its cheap insurance. I think WS6store has them for like 30 bucks, definetly new chain with H/C
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I'm not sure when people got so scared of ASP pulleys or started randomly replacing timing chains, but it is getting out of hand. I have been on this board for a long time (look at my join date on the left) and I can count on one hand the complaints from the new ASP design. And even then, it is just speculation. If you would rather get a March or Fluidamper, they are great, and go for it, but I wish people would stop spreading rumors.
i heard nothing more about the ASP's than i heard about everything else. My tuner loved them, i ended up selling mine becuase i couldnt stay off the rev limiter with my new stall and gears. but everyone ive talked to has been happy with ASP
If the pulleys all have the same underdrive (same diameter) and it the ASP is the lightest, wouldn't that give it less rotational mass and result in more freed HP?
EDIT: Considering the mass of all the pulleys are uniformly distributed.
EDIT: Considering the mass of all the pulleys are uniformly distributed.
Last edited by Golf&GM; Feb 14, 2009 at 06:57 PM.
I may have to look that up. I know if two objects have the same mass and one has more mass around the edges, it could have more rotational mass than the other. Or something like that, it makes sense in my head but I don't think it's coming out right. Time to do a little reading.
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Joined: Jun 2008
Posts: 2,585
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From: Edmond, OK
I may have to look that up. I know if two objects have the same mass and one has more mass around the edges, it could have more rotational mass than the other. Or something like that, it makes sense in my head but I don't think it's coming out right. Time to do a little reading.
12 Second Club
Joined: Jul 2005
Posts: 2,213
Likes: 1
From: Chesapeake va
i noticed the SLP unit is a 25%, is the asp the same? Anybody rip out the AC when doing all this? Ill be pulling mine, save alittle wieght and fug it, i have a vert and dont need to drive the car everyday so it will clean up the engine bay.
is this going on a daily driver? i stay away from underdrive pulleys personally, a couple extra horses = slowing down your water pump which could cause issues in a daily driven car