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-   -   2.2 3R case for 87.5 P&C's ? (http://forums.pelicanparts.com/911-engine-rebuilding-forum/971234-2-2-3r-case-87-5-p-cs.html)

82 sportsc 09-22-2017 02:23 PM
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

Trackrash 09-22-2017 05:53 PM
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.

Steve@Rennsport 09-23-2017 10:16 AM
Quote:
Originally Posted by 82 sportsc (Post 9747334)
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. :)

82 sportsc 09-23-2017 03:31 PM
Thanks guys......not going to live above 7k .
Feel save now.
Frank


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