Did these intake an exhaust ports today for a customer out in Phoenix, AZ. Have a peek, guys; let me know what you think. Comments and constructive criticism always welcome.



http://bdc.genxracing.com/GarretLievens/index.html



B

Just curious what kind of power would you expect to see with that type of porting assuming that all the peripheral stuff was left fairly stock.



Also, how did you get the ports so shiny. I recently built two motors with almost the same port size, but I couldn't get the ports that polished and smooth.

extremely smooth

I'm just doing medium-grit finishing on it; nothing major and I'm not really polishing it. I'm leaving them slightly rough on purpose per some other things I've read.



I'm not sure how much power that motor will make. I think the owner is planning on using an HKS TO4R so I expect over 400rwhp.



B

Can you post a pic of your porting tools.. If you don't mind...It looks real nice..

B- https://www.nopistons.com/forums/pub...1047683683.gif , No round edge on the closing edge of side ports or arround the ex-ports.



Air flows arround a radius better than it does a 90 deg angle.



Looks great otherwise. https://www.nopistons.com/forums/pub...1047683473.gif



My 2 cents.



GregW

Here is what I use https://www.nopistons.com/forums/pub...R#>/unsure.png

god those ports look beautiful. i can't wait to have mine done!!! ahhh i am so excited.

Hi Greg, thanks for the comments. I've thought off and on about making a radius on the closing edge of the side ports, but the reason why I haven't is because I'm not sure if it will make a substantial difference or not. You're right on the 90-degree part; that's why I focus so much effort on the short radius of the port outlet, plus the port tunnel where it transitions into the port outlet. I spent alot of time trying to keep the charge up to speed, avoiding the hard edges the stock casting offers.



What were you recommending again on the exhaust port? I wasn't sure exactly what you meant.



B