Originally Posted by
ClayKann101
I have a .21 3 port standard head in my kyosho very nice engine i love it. I have a Dynamite 007 Ht exhaust on it now, but soon im putting a JP-3 on it. I have a few questions though.
When this engine goes im thinking about getting a .21 7 port turbo head, i mean what exactly does the ports do and the turbo head. I understand that the turbo plug is tapered and the motor has more ports but what does it do to make it run so much better. The cost of the .21 3 port is $125 and the .21 7 turbo head is like $210 so i wanna understand all this before i go spend the money. One more thing is a motor with more ports and a turbo plug harder to tune then a standard head and less ports?
A 7 port has more top end than the 3 or 5 ports, the 7 port has 3 exhaust ports which is what give it more top end. As a general rule of thumb more ports means more top end but not always the case. The 5 port has the most bottom end of the Go motors.Do tou have the 3 port sport? If so I have experimented with some mods on the sport and I like it better than the 3 port race spec with the mods.
The turbo plug is just a better design and seals at the combustion chamber instead of at the washer, you could probably feel the difference between the two plug styles but not a big overall difference. The 5 and 7 ports probably will tune a little harder than a sport motor but they tune pretty easily.
Rex