Drivetrain (Cooper S) MINI Cooper S (R53) intakes, exhausts, pulleys, headers, throttle bodies, and any other modifications to the Cooper S drivetrain.

Drivetrain Which size belt needed for a -13% SC pulley and +2% crank pulley

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Old Sep 9, 2022 | 11:58 AM
  #1  
krunk's Avatar
krunk
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Which size belt needed for a -13% SC pulley and +2% crank pulley

Hi everyone, first of all I'm the new and proud owner of an 06 R53 BRG with the usual leaks and aging parts.
So I'm in the process of ordering the usual maintenance/replacement and servicing parts.
After searching for almost 2 whole weeks, i can't find any information about the belt size for the -13% SC pulley and +2% crank pulley combo.
I sincerely hope someone here could help me further on this one.

Kind regards,
Krunk
 
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Old Sep 10, 2022 | 10:02 AM
  #2  
BlwnAway's Avatar
BlwnAway
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From: Arnold, MO.
Originally Posted by krunk
Hi everyone, first of all I'm the new and proud owner of an 06 R53 BRG with the usual leaks and aging parts.
So I'm in the process of ordering the usual maintenance/replacement and servicing parts.
After searching for almost 2 whole weeks, i can't find any information about the belt size for the -13% SC pulley and +2% crank pulley combo.
I sincerely hope someone here could help me further on this one.

Kind regards,
Krunk
Just a guess, but...
It's either going to be the standard JCW belt (13% pulley)
Or
The standard OEM (no modifications) belt (the +2% large pulley, may cancel out the -13% small pulley)

You'll probably have to get both and experiment, just make sure it's not too tight, you don't want the tensioner to be too close to fully compressed.
 
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