anyone install an aluminum crank pulley on their 2.2? didn't find anything in a search, surely someone has tried these out. see them all over ebay, but i don't want one that's underdriven.
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Guest Message by DevFuse
anyone using an aluminum crank pulley (2.2 l)
Started by
grossgary
, Jun 26 2005 07:43 AM
9 replies to this topic
#1
grossgary
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Posted 26 June 2005 - 07:43 AM
#2
Legacy777
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Posted 26 June 2005 - 11:26 AM
Yeah I have an aluminum stock sized crank pulley.
#3
grossgary
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Posted 26 June 2005 - 02:49 PM
the one on your website is underdriven (smaller than stock size). did you experience any low charging, power steering or a/c issues with the smaller pulley? the smaller crank pulley reduces the rpm's of these associated pulleys.
#4
Legacy777
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Posted 26 June 2005 - 05:35 PM
I've since replaced the underdriven one with a stock sized one. It's an N1 pulley
http://www.imprezars...leys.htm#pulley
http://www.imprezars...leys.htm#pulley
#5
grossgary
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Posted 27 June 2005 - 05:02 AM
why did you go from the underdriven pulley to a stock sized one?
#6
Legacy777
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Posted 27 June 2005 - 08:05 AM
I put a HO alternator in my car. The HO alternator does not make as much amperage at lower rpms compared to the stock alternator, so I wanted to eliminate any light dimming issues. I also purchased a smaller diameter alternator pulley to over drive the alternator.
When I first purchased the unorthodox underdrive pulley, I didn't have any light dimming issues. However as the alternator aged, I did notice it a little bit.
When I first purchased the unorthodox underdrive pulley, I didn't have any light dimming issues. However as the alternator aged, I did notice it a little bit.
#7
Commuter
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Posted 27 June 2005 - 12:09 PM
Not what your questions asks, but I have a lightweight stock sized pulley on my 97 OB (2.5L auto).
Effects?
Negative - Bit more engine rocking. It caused a car vibration at times when sitting at a stop light. Not bad, but enough to bother me. Shortly after, I had the newer liquid filled engine mounts put in. (Other work was being done.) Solved that problem.
Positive - Just a "hint" quicker engine acceleration. It was noticable for the first few take offs from stop lights. But then, I was expecting it too, so it might have been a placebo effect.
Could I tell the difference in a blind test, repeatedly? I rather doubt it.
Commuter
Effects?
Negative - Bit more engine rocking. It caused a car vibration at times when sitting at a stop light. Not bad, but enough to bother me. Shortly after, I had the newer liquid filled engine mounts put in. (Other work was being done.) Solved that problem.
Positive - Just a "hint" quicker engine acceleration. It was noticable for the first few take offs from stop lights. But then, I was expecting it too, so it might have been a placebo effect.
Could I tell the difference in a blind test, repeatedly? I rather doubt it.Commuter
#8
grossgary
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Posted 27 June 2005 - 12:39 PM
thanks for the feedback all.
i like solid pulleys better than harmonic balancers as the rubber ring can fail and i hate failure points. i'll take the minor vibrations. i'm hoping a PRO ECM pulley is well balanced. i know a few others running PRO ECM pulleys on other soobs and never heard them mention vibration issues.
i like solid pulleys better than harmonic balancers as the rubber ring can fail and i hate failure points. i'll take the minor vibrations. i'm hoping a PRO ECM pulley is well balanced. i know a few others running PRO ECM pulleys on other soobs and never heard them mention vibration issues.
#9
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Posted 28 June 2005 - 12:04 PM
Just to be clear, it was not very pronounced, but noticable. It would happen about 75 or 80% of the time. Just a gentle rocking (when at a stop). It seemed that a resonance was actually happening (between engine and car body). If I would just touch the gas pedal to change the rpms even slightly, it would go away. I think the odds of it happening for someone else is slim. Me... I always get stuff like that!i know a few others running PRO ECM pulleys on other soobs and never heard them mention vibration issues.
Commuter
#10
grossgary
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Posted 28 June 2005 - 12:11 PM
wouldn't surprise me if that was common. doubt i'll notice though, all my other soobs are XT6's so they make any variety of vibrations/noises depending which one i drive.
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