Porting a Triumph Spitfire engine head

My Spitfire 1500 was giving me some problems and a compression test told me that there was no compression on cylinder #4. So I pulled the head, sent it to the machine shop, and rebuilt the top end. While I was at it I decided to try my hand at porting the head. It was really quite easy and only added a couple of hours to my to do list. This same modification should work just as fine on any LBC. I'm pretty sure the MGBs and Midgets had almost identical engines, and the Triumph 6 cylinders are pretty much the same as well. Thanks for the inspiration ‪@StevesProjectCarGarage‬ This is THE document that goes over all everything excellent modification-wise the Spitfire has to offer - http://auskellian.com/paul/links_file...