port matching
10-07-09, 03:32 PM
#1
port matching
Yo guys and gals! I read in a rotary performance book something about port matching the intake runners, and it saying that some are actually off by as much as 30*..... Im thinkng of airflow here, I'm trying to crank every last bit of power out of my N/A and Im trying to get airflow as efficient as possible.
Anybody care to shed some light on the matter? I'm not even sure which ports they are matching and to what?
Anybody care to shed some light on the matter? I'm not even sure which ports they are matching and to what?
10-07-09, 05:05 PM
#3
http://www.yawpower.com/Flow%20Testing.html
I know it says 12A, but I'm sure something similar applies to all motors. Just a little food for thought. I can't even pretend to know enough about the subject to understand why, but it's something I'd be cautious of.
Originally Posted by Yawpower
1. Port matching the intermediate runners on a stock 12A intake manifold. This absolutely ruins the flow. Additionally, the velocity is reduced, and so both high, and low rpm power is reduced.
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