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-   -   Boring a 2.4 Biral Cylinder (http://forums.pelicanparts.com/911-engine-rebuilding-forum/124769-boring-2-4-biral-cylinder.html)

Frazier 08-25-2003 09:46 AM

Boring a 2.4 Biral Cylinder
 
Hi Everyone,

I am interested in getting feedback on how much a biral cylinder can be safetly bored. I have information saying the 84mm can be bored to 86.7 and others stated only up to 85mm. Any input is much appreciated.

john walker's workshop 08-25-2003 12:01 PM

the thinner they are, the more tendency to not stay round. 1mm for a long lasting street engine, racers may go larger, but their engines are built for the moment, and if it smokes after one summer, they're happy.


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