thanks for clarifying that GSL13B.



would anyone happen to have pictures of this technique? now that its explained and clarified?

Or better yet, videos or sound clips?

Guys... it's just a bridgeport



just less porting, more iron surface area







you still achieve the early intake opening of a bridgeport, it's just less dramatic because it's not a full eyebrow





this is how they did it in the old days







sorry for the crappy drawing, but to make a bridgeport, you drill holes at an angle (to smooth the airflow), and then use your die grinder to smooth it out and make a full eyebrow. then the bridgeport becomes whats called a "backcut" because the airflow is directed into the port. some bridgeports are drilled straight and ported straight, there is no "backcut"



a non-backcutted bridgeport is created by drilling straight holes. the straight holes would be the non-backcutted version of a "teardrop" port



teardrop porting is one step away from a bridgeport



teardrop is oldschool, it has evolved into bridgeporting

thats they way i imagined it colin, just not that many....



i wonder if the series of holes like that could cause premature wear on the side seal since that certain part of the sideseal would see multiple openning and closing edges. im sure probably not, but something to think about

Don't they call that a (swiss) "cheese port"? https://www.nopistons.com/forums/pub...IR#>/smile.png





-Ted

I didn't mean to make so many holes in the pic, but hey they are crappy doodlings anyways so no big deal. https://www.nopistons.com/forums/pub...IR#>/smile.png

i allways heard of that calles a swis chease port or a cheater bridge. huh. allright then. forget that then I'm going full bridgy!

I was thinking of trying that on a 6 port. I just dont know if the benefits outweigh the down sides, compared to a decent street port.