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Old 06-21-2009, 11:12 AM
itchynscratchy's Avatar
itchynscratchy itchynscratchy is offline
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Supercharger belt

Are there any issues with using the regular Coop S belt on a JCW supercharger? Will there be a loss in power?

thx
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My JCW MINI CSL (Coupe Sport/Soapbox Lightweight)

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Old 06-21-2009, 02:56 PM
quikmni quikmni is offline
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Should not be a problem. The stock belt is 1388mm long and the JCW belt is 1374mm long. Many people use the stock belt on 15% pulleys (the JCW is only 12%). However, I ordered a JCW belt for my replacement just to be safe.
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2006 MCS JCW GP #1405: Adj Front Camber Plates, 19mm Rear Sway Bar, MM Front Lower Brace, Milltek Cat-Back, TCE 13" Front/11.75" Rear BBK, 15mm Spacers, Wheel Studs, JCM Modified Intake, MM Filter, Gauges
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Old 06-21-2009, 08:42 PM
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itchynscratchy itchynscratchy is offline
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Thanks for the info. It feels like i've lost some power since the belt was changed....i thought the different size belt may have lessen the boost fr the blower. I don't believe you have to break in the belt and would feel a loss in power. Hope the belt isn't slipping...
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Old 06-22-2009, 09:13 AM
Bigshot Bigshot is offline
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You will feel the loss in power from a slipping belt at higher rpm's.


How many holes are visible in the belt tensioner ?
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Old 06-22-2009, 05:00 PM
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itchynscratchy itchynscratchy is offline
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i feel the car doesn't rev like it did before the belt change.
I'll take a peek at the tensioner...thanks for the advice.
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Old 06-29-2009, 11:56 AM
mcs_jcw mcs_jcw is offline
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After the belt change has anyone heard of a new whistling sound? No performance lose but apart from the typical SC whine there's that new sound-noise... cause it's a bit annoying.
Any ideas where it can come from?
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Old 06-29-2009, 12:26 PM
quikmni quikmni is offline
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What brand/type belt did you install?
I have seen various reports that some belts are noisier than others. For example the Goodyear Gatorbacks are frequently reported as noisier on some vehicle applications.
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Old 06-30-2009, 08:05 AM
Bigshot Bigshot is offline
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Could be a tensioner or idler pulley going bad.
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Old 06-30-2009, 08:05 AM
 
 
 
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