cowboyvet
ArboristSite Operative
I'm learning and reading a mountain of books and threads on porting. In doing so I think of an old trick I was shown on old carb 4 strokes. I was shown by a very good head man years ago a trick he used in his porting. It was tested and he showed me smoke flow and volume flow testing. More importantly his heads dominated the race tracks locally. What he did was make the intake ports look like a swirl you see on an "easy out". He cut ridges and valleys in a gentle curve around the runners. He would sometimes build it up with material if needed to make the cuts but he had more flow by the time the valleys were cut. The effect was better atomization of the fuel air mix. That is one of the reasons fuel injection produces more power because of the better atomization. Attempting this would be way over my head at this time but I was just curious if anybody had tried anything like this. I keep seeing how everybody wants to leave the intake a little "rough" to help with atomization. I can't help but think about what this old timer showed me on 4 strokes and wonder what smooth with swirls would produce. Like I said this is way over my head to even think of attempting. Anybody heard of anything like this? Would it be better in theory?