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Lightened Crank Pulley - unintended consequences?

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Old 27 June 2017, 10:12 AM
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Bazil_SW
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Default Lightened Crank Pulley - unintended consequences?

During my recent engine rebuild I was considering fitting a lightened crank pulley, but didn't at the time for cost reasons. I'm still thinking about it, but in the process I noticed that the stock unit is a 2 piece dynamically damped part (i.e. 2 chunks of metal with rubber sandwiched between them).

Does anyone know if there are any unintended consequences to fitting a single piece non-damped pulley? I guess; possible idle and pull away rev issues, but also damage to the alternator, PS pump or A/C compressor?
Old 27 June 2017, 07:36 PM
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topshot
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i'd change the aircon, alternator etc for lighter pulleys but i'd keep the oem pulley personally, it serves a purpose by damping the vibrations from the crank

Last edited by topshot; 27 June 2017 at 07:38 PM.
Old 27 June 2017, 07:51 PM
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The Rig
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Google it , loads on the harmonic dampening effect the Oem one does
Old 28 June 2017, 01:26 PM
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Thanks for the replies. I've read lots on the forums and still non the wiser as it's highly debated. On that basis and that I've just finished a timely and costly rebuild I'm going to steer clear of crank pulley parts!




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