Powerbond Pulley Questions
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From: Winston-Salem, NC
Powerbond Pulley Questions Got my Powerbond Pulley in from TSP yesterday, and as I was checking it out, I developed a few questions:
Why is this thing so HEAVY? It is a lot heavier than the ASP unit.
Why are there timing marks on the outer edge?
Why the crank keyway?
I know the Powerbond and the SLP unit are the same, but at this point I'm kind of wishing I'd have went with the ASP afterall.
Anybody got any answers?
Why is this thing so HEAVY? It is a lot heavier than the ASP unit.
Why are there timing marks on the outer edge?
Why the crank keyway?
I know the Powerbond and the SLP unit are the same, but at this point I'm kind of wishing I'd have went with the ASP afterall.
Anybody got any answers?
I originally bought a used ASP but then I sold it after seeing a few problems arise with others. I now have an SLP that I am waiting to put in and they feel relatively the same but I don't have them right next to each other to really compare. I know the ASP is made of aluminum and the SLP is steel so I am sure the ASP is slightly lighter. I am under the impression however, that the hp gains are from the reduction in size and not weight.
you are correct, the hp gains are from the size. and with the size that these things are, there cant be that much weight difference. if i did know for a fact that the slp was heavier, i'd still choose it just because it has taller sidewalls.
wait till you get the stock one off and compare weight between it and the slp. you'll be more than happy.
wait till you get the stock one off and compare weight between it and the slp. you'll be more than happy.
On The Tree
Joined: Apr 2005
Posts: 162
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From: Northern Virginia
Originally Posted by JoeyAnderson
Got my Powerbond Pulley in from TSP yesterday, and as I was checking it out, I developed a few questions:
Why is this thing so HEAVY? It is a lot heavier than the ASP unit.
Why are there timing marks on the outer edge?
Why the crank keyway?
I know the Powerbond and the SLP unit are the same, but at this point I'm kind of wishing I'd have went with the ASP afterall.
Anybody got any answers?
Why is this thing so HEAVY? It is a lot heavier than the ASP unit.
Why are there timing marks on the outer edge?
Why the crank keyway?
I know the Powerbond and the SLP unit are the same, but at this point I'm kind of wishing I'd have went with the ASP afterall.
Anybody got any answers?
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Originally Posted by VA2001SS
The crank keyway is for supercharged applications when you have a keyed crank as well. It would keep the pulley from spinning on the crank under boost.
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I have a powerbond and just realized from personal experience last night what size belt fits the 10% underdrive the hard way. 4 trips later to O'Reilly...come to find out that it is a 77.5 belt.
Originally Posted by orangeapeel
I have a powerbond and just realized from personal experience last night what size belt fits the 10% underdrive the hard way. 4 trips later to O'Reilly...come to find out that it is a 77.5 belt.
The powerbond pulley is slightly heavier than the ASP but that is b/c they made it to be as close to the stock pulleys weight so it will still dampen like the stock piece does. Some of the early problems with the ASP pulleys were they didnt dampen as well as stock and therefore were not SFI approved. Besides, the horsepower gain does come from the size, not the weight of the pulley. I have one on my new motor that is about to go in the car and I am very impressed with the craftsmanship and quality of it.
On The Tree
Joined: Apr 2005
Posts: 162
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From: Northern Virginia
Originally Posted by MeentSS02
The problem is that it is an underdrive pulley, which wouldn't make much sense to use in a supercharged application unless you were really trying to limit the boost.
