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

Drivetrain Big Bore Kit?

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Old Dec 13, 2004 | 06:47 PM
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JCampos's Avatar
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Big Bore Kit?

Does anyone have any plans on upping the MINI displacement?
 
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Old Dec 13, 2004 | 07:00 PM
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Judging from the specs posted here by somebody (Pilo Racing maybe?) there doesn't seem to be much room to gain significant displacement without requiring some pistons with a figure-eight cross section. I don't remember there being much meat between the cylinder bores nor much room to stroke them.

So it looks like the biggest gains are to be had through breathing improvements rather than displacement.

But then, what do I know?
 
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Old Dec 14, 2004 | 04:06 AM
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I had Endyn sonic measure the wall thickness. his opinion was to not overbore. Besides being close together, water passages are too close to the bore.
 
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Old Dec 14, 2004 | 04:45 AM
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I think Randy Webb from Webbmotorsports.com also had looked into big bore for the MINI and found it was not a viable option.

Guess you'll have to wait for a future MINI to up the displacement to 1.8 liters or better. Sometimes with more displacement comes more weight.
 
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Old Dec 14, 2004 | 11:03 AM
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I was just curious, thanks for the responses
 
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Old Oct 20, 2007 | 10:04 PM
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Update for anyone interested-
https://www.northamericanmotoring.co....php?p=1816303
 
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Old Oct 21, 2007 | 05:15 AM
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Bored, and Stroked

Originally Posted by minihune
minihune's been busy digging up old threads
 
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Old Oct 21, 2007 | 08:35 AM
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Originally Posted by norm03s
minihune's been busy digging up old threads
I searched and found some threads but many did end up without much to offer. At least this way the threads are updated if they are searched for.
 
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Old Oct 21, 2007 | 08:39 AM
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it's nothing against the people who said it couldn't be done... I hear that all the time. It doesn't stop me from making it happen. I welcome the challenges. I have used some of the best known names in the business when starting these projects. There is a reason my car set the fastest time at SOW and it sure isn't because I am Michael Schumacher

I am sure once I get my axles for the drag car we will see something spectacular there too
 
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