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benggolf · Aug 21st, 2002, 06:23 PM

John,

Being in the dark myself about the JCW mod, I suspect a pulley change and/or modified supercharger to increase boost pressure is the key.

Mods to the cylinder head could include: change in valve size, minor porting and re-shaping of the combustion chambers to aid in flame propagation, change in compression ratio (up or down????), improved ignition (twin spark plugs would be neat), etc.

A modified fuel pump, air intake and exhaust system could possibly be a part of the kit. Hmmm.

Do you any preliminary info on expected HP/torque gains for the Cooper and Cooper S?

Aug 21st, 2002, 06:23 PM	#3
benggolf MINI2 Master Join Date: Jul 2002 Location: Richmond, B.C. Local Time: 09:37 AM Posts: 4,056 Offline	John, Being in the dark myself about the JCW mod, I suspect a pulley change and/or modified supercharger to increase boost pressure is the key. Mods to the cylinder head could include: change in valve size, minor porting and re-shaping of the combustion chambers to aid in flame propagation, change in compression ratio (up or down????), improved ignition (twin spark plugs would be neat), etc. A modified fuel pump, air intake and exhaust system could possibly be a part of the kit. Hmmm. Do you any preliminary info on expected HP/torque gains for the Cooper and Cooper S? 2005 Mercedes Benz C55 AMG 2006 BMW Z4 M-Coupe - Premium Pkg. 2007 Honda Fit - Sports Pkg. 2005 V-Star 1100 Custom 2007 Honda 250 Reflex