Underdrive Pulley for M6 car?
02-18-2006, 11:01 PM
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Underdrive Pulley for M6 car? What pulley is replaced for an M6 car: crank and alternator or just crank? What is the best underdrive pulley? I've heard ASP is best b/c it is lightest. Is it good? I've heard that they sometimes throw belts. What are hp gains? (i've heard 5-10rwhp).
02-18-2006, 11:46 PM
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You will just need an underdrive crank pulley unless you have a big stereo system. If you do have a big stereo system then you might want to get an overdrive alternator pulley along with the underdrive crank pulley. I have the Powerbond pulley on my car, and like it a little better than the ASP.
02-18-2006, 11:46 PM
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Stick with crank only.
I am happy with my SLP underdrive pulley, but I don't see a problem with an ASP or even March as many people are using them with no problems.
Gains are typically around 0.1 and 1 mph in the 1/4.
I am happy with my SLP underdrive pulley, but I don't see a problem with an ASP or even March as many people are using them with no problems.
Gains are typically around 0.1 and 1 mph in the 1/4.
02-18-2006, 11:52 PM
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Originally Posted by 98camaroLS1M6
What pulley is replaced for an M6 car: crank and alternator or just crank? What is the best underdrive pulley? I've heard ASP is best b/c it is lightest. Is it good? I've heard that they sometimes throw belts. What are hp gains? (i've heard 5-10rwhp).
Originally Posted by BackinBlack02SS
The ATI super damper is probably the best as far as dampening goes, but it is only available up to a 10% underdrive. The March fluid filled damper isn't very far behind in dampening ability and when you consider that the fluid is not rotational weight, is also pretty light. The SLP/Powerbond has tall walls to help prevent thrown belts. The ASP is probably the lightest out of the bunch, but is not known for it dampening ability. It's your decision, but I tend to lean towards the March damper as the best all around underdrive damper IMO.
02-19-2006, 10:58 AM
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Originally Posted by prostock_bigblock
look at this
Originally Posted by [b
BackinBlack02SS[/b]]The ATI super damper is probably the best as far as dampening goes, but it is only available up to a 10% underdrive. The March fluid filled damper isn't very far behind in dampening ability and when you consider that the fluid is not rotational weight, is also pretty light. The SLP/Powerbond has tall walls to help prevent thrown belts. The ASP is probably the lightest out of the bunch, but is not known for it dampening ability. It's your decision, but I tend to lean towards the March damper as the best all around underdrive damper IMO.
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02-19-2006, 01:37 PM
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Originally Posted by WILWAXU
Just for clarification, the problems with thrown belts has alot less to do with the pulley itself. Usually it's the a worn out belt tensioner that causes those problems.
02-19-2006, 02:24 PM
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Originally Posted by WILWAXU
Just for clarification, the problems with thrown belts has alot less to do with the pulley itself. Usually it's the a worn out belt tensioner that causes those problems.
While I agree with you, the taller walls of the SLP/powerbond will keep the belt from walking even if the tensioner isn't doing it's job quite like it should.
02-19-2006, 02:52 PM
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what exactly is the use of an underdrive pulley? And can someone explain the dampening of it?
I always heard they were a waste of time but seeing that noone in here has said anything bad about them, wouldnt mind looking into and learning what they are about.
I always heard they were a waste of time but seeing that noone in here has said anything bad about them, wouldnt mind looking into and learning what they are about.
02-20-2006, 04:37 PM
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Originally Posted by FBodyPerformer
what exactly is the use of an underdrive pulley? And can someone explain the dampening of it?
I always heard they were a waste of time but seeing that noone in here has said anything bad about them, wouldnt mind looking into and learning what they are about.
I always heard they were a waste of time but seeing that noone in here has said anything bad about them, wouldnt mind looking into and learning what they are about.
Dampening is the action of controlling harmful engine vibrations, usually with a soft or fluid mass that will absorb those harmonic vibrations.
If you have a piece of steel bar sitting around, pick it up and hit it with a hammer. It'll ring like crazy till you grab hold if it. That same ringing will tear an engine apart if left unchecked. Thus, the crank pulley doubles as a harmonic dampener, much like your hand grabbing that ringing piece of steel.
02-22-2006, 11:31 PM
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If you have a piece of steel bar sitting around, pick it up and hit it with a hammer. It'll ring like crazy till you grab hold if it. That same ringing will tear an engine apart if left unchecked. Thus, the crank pulley doubles as a harmonic dampener, much like your hand grabbing that ringing piece of steel.[/QUOTE]
good analogy, A+! haha
good analogy, A+! haha
