# Girls car is back under the knife.

**URL:** <https://forums.speedlife.net/t/girls-car-is-back-under-the-knife/244661>\
**Category:** Builds\
**Created:** [June 9, 2009, 10:03am UTC](https://forums.speedlife.net/t/girls-car-is-back-under-the-knife/244661 "2009-06-09T10:03:36Z")\
**Posts on this page:** 1\
**Showing post:** 99

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**Author:** ![1320-20V](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/1320-20v/32/6474_2.png) [@1320-20V](https://forums.speedlife.net/u/1320-20V)\
**Post date:** [October 27, 2009, 2:02pm UTC](https://forums.speedlife.net/t/girls-car-is-back-under-the-knife/244661/99 "2009-10-27T14:02:56Z")

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> [@X-box live gamertag thread\*\*edited with list\*\*](https://forums.speedlife.net/t/x-box-live-gamertag-thread-edited-with-list/22265/339):
>
> i know its crazy but i’m actually going to agree with brett on this one. the lw pulleys aren’t perfectly balanced and cal lead to bearing failure. just grab the oem one off the parts car.

The balance of the pulley itself is not really the issue. Its the mass of the pulley itself. With a lightweight pulley and flywheel you change the location of the CG of the crankshaft, and its vibration characteristics will change. The 1.8t has proven to be very sensitive to this change.

I will second Brett’s recommendation of the Fluidamper or the stock pulley. The performance increase of a lightweight flywheel is much much more than the crank pulley anyway.

Nice build! :thumbup

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