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Have you .....

May 27 2012 at 5:18 PM

Dan in MI  (Login VWDan)
YC


Response to Pretty sure it's not a volume issue, Scot...

Dave,

Have you shortened the threaded section of the of the valve body? You can shorten it to about 0.375" above the shoulder where the o-ring is sandwiched.

The valve body bore can be bored out to 0.475" to allow more air flow around the pop-it valve head.

You might want to try a search and see if you can find anything on the subject by Rich from Michigan. I know he has done a few big bores (.308) based on the QB with a modified stock valve that have produced about 100 fpe.

Good Luck!



Dan

''If everything seems under control, you're not going fast enough!'' Mario Andretti


    
This message has been edited by VWDan on May 28, 2012 7:20 AM


 
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