# couple questions... \[custom aluminum pulleys\]

**URL:** <https://forums.speedlife.net/t/couple-questions-custom-aluminum-pulleys/75991>\
**Category:** NYSpeed Automotive\
**Created:** [November 10, 2009, 11:21pm UTC](https://forums.speedlife.net/t/couple-questions-custom-aluminum-pulleys/75991 "2009-11-10T23:21:29Z")\
**Posts on this page:** 5\
**Page:** 2

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [November 11, 2009, 10:56am UTC](https://forums.speedlife.net/t/couple-questions-custom-aluminum-pulleys/75991/21 "2009-11-11T10:56:34Z")

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it’s heavy for a reason. Leave it alone.

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**Author:** ![Onyx\_Z32](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/onyx_z32/32/7581_2.png) [@Onyx\_Z32](https://forums.speedlife.net/u/Onyx_Z32)\
**Post date:** [November 11, 2009, 12:23pm UTC](https://forums.speedlife.net/t/couple-questions-custom-aluminum-pulleys/75991/22 "2009-11-11T12:23:27Z")

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> [@BREETIME](#):
>
> that was the first choice of mine…
> 
> but its so heavy and ugly ☹

Do you plan on pulling the motor apart and replacing the crank bearings? IMO, if you’re not going to do that keep the dampened pulley. By switching to an un-dampened pulley you’ll be increasing the rate of wear on bearings that may already have started to show their age. (I’m assuming the motor you have has a good amount of miles on it already.)

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**Author:** ![turbo\_ls1\_ss](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_ls1_ss/32/7303_2.png) [@turbo\_ls1\_ss](https://forums.speedlife.net/u/turbo_ls1_ss)\
**Post date:** [November 11, 2009, 9:41pm UTC](https://forums.speedlife.net/t/couple-questions-custom-aluminum-pulleys/75991/23 "2009-11-11T21:41:08Z")

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youre crank with be a tuning fork on your bearings if you have nothing cushioning the vib’s

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**Author:** ![Bull49](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bull49/32/7381_2.png) [@Bull49](https://forums.speedlife.net/u/Bull49)\
**Post date:** [November 12, 2009, 3:03am UTC](https://forums.speedlife.net/t/couple-questions-custom-aluminum-pulleys/75991/24 "2009-11-12T03:03:22Z")

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> [@turbo ls1 ss](#):
>
> youre crank with be a tuning fork on your bearings if you have nothing cushioning the vib’s

i can’t… i mean, i don’t…ummmmm…what?

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**Author:** ![system](https://canada1.discourse-cdn.com/flex034/uploads/speedlife/original/2X/b/b7170c8eddc0b95ece6b88172b2f416a08489a45.png) [@system](https://forums.speedlife.net/u/system)\
**Post date:** [November 12, 2009, 4:54am UTC](https://forums.speedlife.net/t/couple-questions-custom-aluminum-pulleys/75991/25 "2009-11-12T04:54:47Z")

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> [@Onyx Z32](#):
>
> Do you plan on pulling the motor apart and replacing the crank bearings? IMO, if you’re not going to do that keep the dampened pulley. By switching to an un-dampened pulley you’ll be increasing the rate of wear on bearings that may already have started to show their age. (I’m assuming the motor you have has a good amount of miles on it already.)

Agreed 100% unless you plan on purchasing an underdrive unit from ATI or Fluidampr. Heavier units more effectively dampen upper RPM engine harmonics.

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