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chrisflyer · Sep 15th, 2008, 07:22 PM

Hi,
I was of the opinion that the Cooper S engine was the same as The cooper (ie same bore and stroke.) But have noticed that the cooper has a higher compresion ratio than the S. Can some one tell me if this is acheved by using different pistons or a diffeent head.

thanks
Chris

MINI-Morgan · Sep 15th, 2008, 08:33 PM

Pistons..... and differences dont stop there......

MINIAC · Sep 15th, 2008, 08:41 PM

From the FAQs:

Quote:

The Cooper and One use the same engine, codenamed W10B16, with differences in ECU programming. The 'S' engine, codenamed W11B16, has been extensively modified to meet the high demands in terms of power and torque. These modifications are described in detail in the Münchner Technologie Zentrum white paper entitled "The MINI Cooper S Powertrain", available in both English (no figures) and German.

Sep 15th, 2008, 07:22 PM	#1
chrisflyer MINI2 Regular Join Date: Aug 2006 Local Time: 09:12 PM Posts: 177 Offline	Cooper S engine V Cooper engine Hi, I was of the opinion that the Cooper S engine was the same as The cooper (ie same bore and stroke.) But have noticed that the cooper has a higher compresion ratio than the S. Can some one tell me if this is acheved by using different pistons or a diffeent head. thanks Chris

Sep 15th, 2008, 08:33 PM	#2 (permalink)
MINI-Morgan MINI Obsessed... My Classifieds Join Date: Nov 2003 Location: Southampton, Hants Local Time: 09:12 PM Posts: 4,679 Offline	Pistons..... and differences dont stop there...... One Man, One Project......find out what happens next at MINIProject.co.uk For MINIs in the south it can only be South Coast New MINI Club

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Sep 15th, 2008, 08:41 PM	#3 (permalink)
MINIAC MINI Profiler Join Date: Feb 2001 Location: City By The Bay Local Time: 01:12 PM Posts: 8,618 Online	From the FAQs: Quote: The Cooper and One use the same engine, codenamed W10B16, with differences in ECU programming. The 'S' engine, codenamed W11B16, has been extensively modified to meet the high demands in terms of power and torque. These modifications are described in detail in the Münchner Technologie Zentrum white paper entitled "The MINI Cooper S Powertrain", available in both English (no figures) and German.

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