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      12-24-2011, 01:15 AM   #60
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Drives: Elsa - 2015 F80 M3 - YMB/SS
Join Date: Aug 2006
Location: So Cal

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Originally Posted by SoCali E90 View Post
Originally Posted by delkat View Post
Are the OEM pistons, rods and crank forged or cast? Is the block sleeved?

The components look stout from the pictures. There's a lot of mass in the valvetrain with the chains and Vanos components. How does the combustion chamber/port design/valve profiles look? Do you think the roll off of power at redline is due to head flow limitations, valve size, cam profile, a combination? Just wondering where the best bang for the buck is to get more power out.


Today 08:34 PM
SoCali E90

damn reading that made me dizzy

Haha, I was the same way. Great start on the build. Subsribed.