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

Drivetrain one ball - what size pipe to use?

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Old Mar 4, 2012 | 03:16 PM
  #1  
firemerc13's Avatar
firemerc13
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From: Just south of the White mountains, just north of the lakes region, in other words, Rumney, NH
one ball - what size pipe to use?

Having searched NAM for days, I can't find what size exhaust pipe to use for the one ball mod. I have my own welder and want to buy the elbow before starting this project. There are lots of posts talking about it being done, but none are the specific. Any help, as always, is appreciated.
 
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Old Mar 7, 2012 | 05:28 PM
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firemerc13
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From: Just south of the White mountains, just north of the lakes region, in other words, Rumney, NH
apparently I put in wrong section, any help
 
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Old Jun 21, 2012 | 01:16 PM
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From: St. Peter MN
Originally Posted by firemerc13
apparently I put in wrong section, any help
Not sure if you're still looking for this info, but I read in another forum that it is 2.5 with a 90 degree bend and flared ends. I believe the pipe is narrower upstream of the cat.

Hope that's useful.
 
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Old Jun 21, 2012 | 03:47 PM
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From: Pittsburgh, Pa
I think the stock pipe is 2.25 but I could be wrong. You can usually eyeball it with a measuring tape if need be.
 
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Old Jun 21, 2012 | 04:02 PM
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firemerc13
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From: Just south of the White mountains, just north of the lakes region, in other words, Rumney, NH
Thank you, finally some one answered me. I have been wanting to do this, but didn't want to cut stuff til I had all the parts.
 
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