I thought I would start a separate thread for the head port I'm working on for the race head I'm going to be doing for a proddy speedway car.
This port is a C1A casting, and the results are using a stock standard crossflow intake valve, 1.8in single cut valve. The port has a 3 angle seat cut that is a little worn but still usable. So the first test was on the port as cast from the factory with the 3 angle seat cut, the second test is with the port ported and the third is with the port work plus the chamber work.
this is the stock valve I'm using
Stock combustion chamber and reworked chamber, not much needed here, just laying the edge over and blending to form a nice smooth shape, you have to take the point off the end of he swirl generator to stop pinging.
This is the port work, hard to explain what I have done but most of the work is at the short turn and bowl area, I mapped the air velocity of the stock port to determine what material and shape needed to be used, the port responded well to being biased to the right.
So as you can see the results are reasonably good, the chamber work plays a big part of the power potential, this head now has a flow potential of 330hp using the stock standard intake valve.
Hope you find this interesting.
tc_corty reacted to Clevo120Y in crossflow porting results