Is their a chart that shows the correct belt or keep the stock belt for a supercharger pulley upgrade? I misplaced the chart from one of the Mini Cooper parts companies. Thanks

 

There are multiple

Belt 1 : Gen 1 MC Stock : Gates 1050mm / K060406
Belt 2 : Gen 1 MCS Stock Length or Stock SC Pulley w/ 2% Crank Pulley : Gates 1404mm / K060547
Belt 3 : Gen 1 MCS JCW or 15% Pulley: Gates 1379mm / K060535
Belt 4 : Gen 1 MCS 17% or 19% Pulley: Gates 1367mm / K060532
Belt 5 : Gen 1 MCS 15% or 17% Pulley w/ 2% Crank Pulley : Gates 1385mm / K060539
Belt 6 : Gen 1 MCS Air Conditioning Delete Belt. Will run Crank, Alt., and Supercharger : Gates 856mm / K060331 Note: Must remove idler pulley (see photo).

Source: https://www.detroittuned.com/mini-cooper-belts/

6PK1390 - 0% (Stock) Supercharger, 0% (Stock) Crank, 0% (Stock) Alternator
6PK1390 - 0% (Stock) Supercharger, +2% Crank, 0% (Stock) Alternator
6PK1390 - 0% (Stock) Supercharger, +2% Crank, +5% Alternator
6PK1390 - 0% (Stock) Supercharger, +2% Crank, +10% Alternator
6PK1375 - 11% Supercharger, 0% (Stock) Crank, 0% (Stock) Alternator
6PK1375 - 15% Supercharger, +2% Crank, 0% (Stock) Alternator
6PK1375 - 15% Supercharger, +2% Crank, +5% Alternator
6PK1375 - 15% Supercharger, +2% Crank, +10% Alternator
6PK1368 - 13% Supercharger, 0% (Stock) Crank, 0% (Stock) Alternator
6PK1368 - 14% Supercharger, 0% (Stock) Crank, 0% (Stock) Alternator
6PK1368 - 15% Supercharger, 0% (Stock) Crank, 0% (Stock) Alternator
6PK1368 - 17% Supercharger, +2% Crank, 0% (Stock) Alternator
6PK1368 - 17% Supercharger, +2% Crank, +5% Alternator
6PK1368 - 17% Supercharger, +2% Crank, +10% Alternator
6PK1360 - 16% Supercharger, 0% (Stock) Crank, 0% (Stock) Alternator
6PK1360 - 17% Supercharger, 0% (Stock) Crank, 0% (Stock) Alternator
6PK1360 - 19% Supercharger, +2% Crank, 0% (Stock) Alternator
6PK1360 - 19% Supercharger, +2% Crank, +5% Alternator
6PK1360 - 19% Supercharger, +2% Crank, +10% Alternator
6PK1353 - 18% Supercharger, 0% (Stock) Crank, 0% (Stock) Alternator
6PK1353 - 19% Supercharger, 0% (Stock) Crank, 0% (Stock) Alternator
6PK1353 - 20% Supercharger, 0% (Stock) Crank, 0% (Stock) Alternator

Source: https://orranje.co.uk/product/mini-g...ulley-belt-r53

 

I needed that information too so thanks!!-E

 

Should be sticky information as this is a recurring question :P

 

Thanks Nd-Photo.n , for the very informative chart that you provided.

 

Welcome!

 

BTW there may be some confusion on the Gates K060539... It is equivalent to a 6PK1370, which has a 1385mm outer circumference. I think people get confused on outer circumference vs. effective belt length.

Orranje I think has it wrong at the bottom of their page for the Gates conversion P/N...

Bottom line, for an 11% factory JCW setup, you should be using a 6PK1374 (or 6PK1375).