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R50/R53 :: Hatch Talk (2002-2006) Cooper (R50) and Cooper S (R53) hatchback discussion.

R50/53 Pulley help

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Old Apr 11, 2016 | 12:36 PM
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jcnnjc
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Pulley help
Can anyone help me identify this pulley its on my new to me 2006 mcs
I want to get a new belt and this looks like a aftermarket pulley but not sure if it's a 15 17 or 19?
Thanks
 
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Old Apr 11, 2016 | 01:43 PM
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BRGPA's Avatar
BRGPA
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Most pulleys are stamped with the percentage reduction. Maybe get a light in there for a good look.
 
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Old Apr 11, 2016 | 01:52 PM
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nkfry
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Chances are you'd be fine with a 1379mm belt, especially if you don't have an underdrive pulley on the crank.

Link to belt: 1379mm Belt
 
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Old Apr 11, 2016 | 05:43 PM
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Thanks for the replies, I did look at the pulley with a flashlight and couldn't see any marks at all
 
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Old Apr 12, 2016 | 05:11 AM
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Saltysalt
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solid chance its a 15% reduc pulley, looks like mine. have any way to measure your boost pressure?
 
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Old Apr 12, 2016 | 06:49 AM
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Yes, using the torque app it's around 14 psi
Not sure what stock should be?
 
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Old Apr 12, 2016 | 07:20 AM
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sevin
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Originally Posted by jcnnjc
Yes, using the torque app it's around 14 psi
Not sure what stock should be?
That's probably a 15%. Stock is ~10psi. 17% pulleys are ~16psi+ I think.
 
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Old Apr 12, 2016 | 08:11 AM
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Helix13mini
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That there is the rarely-seen MiniMania 3-piece 15% pulley of yore. Be vewwy qwiet and don't startle it in its natural environment.
 
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Old Apr 12, 2016 | 10:11 AM
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LOL ok thanks now I now what belt to get
Thanks for the help!
 
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Old Apr 12, 2016 | 10:25 AM
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darianquayle
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Here's a stock pulley and a 17% for comparison
 
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