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Join Date: Jul 2010
Location: chicago il
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2.2 3R case for 87.5 P&C's ?

Building slightly more than 2.5 ....
saw comments that 3R case should not go behind 86?
Should I have any concerns ?
Thanks
Frank
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Gold71
Old 09-22-2017, 02:23 PM
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I run 90mm barrels on my '71 case. No problems for the past 30 years. Of course I had to have my case and heads machined for the cylinders.
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'71 911 Coupe outlawed
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Old 09-22-2017, 05:53 PM
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Location: Portland Oregon
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Originally Posted by 82 sportsc View Post
Building slightly more than 2.5 ....
saw comments that 3R case should not go behind 86?
Should I have any concerns ?
Thanks
Frank
Not a problem unless the engine will be living beyond 7K RPM.
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Steve Weiner
Rennsport Systems
Portland Oregon
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www.rennsportsystems.com
Old 09-23-2017, 10:16 AM
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Thanks guys......not going to live above 7k .
Feel save now.
Frank
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Gold71
Old 09-23-2017, 03:31 PM
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