How good is a totally vertical down draft port??
In this, Episode 29 of powerTec 10, DV investigats the importance of the ports CD (discharge co-effficient) or, to put it into plain language, the ports flow effciency. For this he made a port that came down vertically on the back of the valve - no bends just a straight port and valve. How efficient was it - try guessing. Chances are you are wrong!
▶︎
The most comprehensive cam selection YOU HAVE EVER SEEN!
▶︎
Porting SB Chevy VORTEC heads for real pro results
▶︎
Cam profile or cam event timing - which is most important?
▶︎
Is Port Matching A WASTE Of Time?
▶︎
Port fill to find hidden power
▶︎
Why cam companies cam timing cards are almost always wrong!
▶︎
% Golden porting rules - part 4 of rule #1
▶︎
Big return hi-tech quench that pro-stockers don't want you to know.
▶︎
How To Hone A Winning Engine Block - NHRA Champ Greg Anderson Shares His Secrets!
▶︎
3 Steps For Proper RING SEAL
▶︎
5 golden porting rules - #1
▶︎
How to File Fit Rings for Your Engine: Guide to Proper Gap
▶︎
The Most Expensive SS Object Ever Sold!
▶︎
Crank modifications for increased power Part 1
▶︎
WHICH FACTORY BBC HEAD MAKES THE MOST POWER? PEANUT PORT vs PORTED 049 OVAL vs REC PORT vs AFR 265!
▶︎
I Built a Set of 180 Degree Headers for the Perfect Sound
▶︎
How to pick the right carbide inserts for lathe turning, general overview and considerations
▶︎
What's a race prep on a stock rod worth? Way more than you might think!
▶︎
Once You Understand it, You Will Think Everything Else is Silly - Toyota E-CVT
▶︎