Porting rocks, it make the motor flow more air, gain higher RPM, faster, stronger. The improvements are instant and long lasting. However if you dont get it right, you can stuff your motor on the spot? it does happen.
I think of it as 3 parts, getting it in, getting it out. and not having any restrictions in the flow path. A 2 inch pipe flows (4 times) as much as a 1 inch pipe. its the same if you double it. SO any increase is a big gain. round also flows better than square.
My easy way out, if you dont have a rotary file set or high speed drill is use to 2-3 base gaskets and raise both exhaust timing and intake. No drills, or rotary files. The only downside is you will lose some compression. As you would if your filed the ports
Polish transfer ports and smooth out any edges. I guess The biggest single "easy" gain i have made is taking a standard aluminuium inlet manifold and taking it out 17mm then polishing it. standard carby, massive difference. and free..
Phillip
I think of it as 3 parts, getting it in, getting it out. and not having any restrictions in the flow path. A 2 inch pipe flows (4 times) as much as a 1 inch pipe. its the same if you double it. SO any increase is a big gain. round also flows better than square.
My easy way out, if you dont have a rotary file set or high speed drill is use to 2-3 base gaskets and raise both exhaust timing and intake. No drills, or rotary files. The only downside is you will lose some compression. As you would if your filed the ports
Polish transfer ports and smooth out any edges. I guess The biggest single "easy" gain i have made is taking a standard aluminuium inlet manifold and taking it out 17mm then polishing it. standard carby, massive difference. and free..
Phillip
