308kiwi Posted January 10, 2019 Report Share Posted January 10, 2019 I can't add to the "barrel gas ports" thread because it's read only but 98 has posted a couple of charts on there recently, this is another that is a handy reference, someone that can add to that thread could perhaps attach it. Cheers.. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted January 10, 2019 Report Share Posted January 10, 2019 10 hours ago, 308kiwi said: I can't add to the "barrel gas ports" thread because it's read only but 98 has posted a couple of charts on there recently, this is another that is a handy reference, someone that can add to that thread could perhaps attach it. Cheers.. Done, brother. Quote Link to comment Share on other sites More sharing options...
308kiwi Posted January 11, 2019 Author Report Share Posted January 11, 2019 5 hours ago, 98Z5V said: Done, brother. Thank you. It's really interesting comparing the actual 'gain in area' increases as your port size increases, something to always consider when tuning gas ports. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted January 11, 2019 Report Share Posted January 11, 2019 18 minutes ago, 308kiwi said: Thank you. It's really interesting comparing the actual 'gain in area' increases as your port size increases, something to always consider when tuning gas ports. That's why we have different gas port sizes for different gas block sizes. Notice the differences in the charts I posted in the other thread? They have two different figures, for a .625 and .750 gas blocks. That's due to the volume of that hole. It's simple engine math, really. How to calculate bore and stroke into cylinder volume. Bore x Bore x Stroke x 0.7854 = displacement, for that cylinder. Same thing with gas ports in barrels. Gotta know how thick that barrel is in order to get the "stroke" part of the calculation correct. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.