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Discussion Starter #1
I flow benched the upper plenum today and throttle body and as i thought it didnt do to bad. Here are the numbers. They arnt bad considering that the Ported intake flowed 170 CFM. This means if i can pull that 8 CFM out of the intake it will not become a restitiction.

Furthest runner was 162 CFM
Closest runner was 177 CFM

For pics go to this link.

http://groups.msn.com/NissanZ31/shoebox.msnw?Page=Last



Post Edited (Jun 7, 11:16am)
 

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Re: Flow Numbers are in

I used the industry standard of 24 In of H2O. I can do the math and figure out the CFM of other Pressure differences. At the end of each runner and at the first bend after the throttle body is where i will do some porting and some polishing up of. When looking into the ports there is some casting slag that can be easly removed.
 

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Discussion Starter #6
did some porting on the upper plenum today, i will get you flow numbers this coming monday. Pics will be on the site stated above later tonight.
 
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