what head would flow better? 14cc or 18cc

[wildman500]

What head would flow better? A 14cc head unmilled with 28.5 intake valve or a 18cc head milled to 14cc with 28.5 valve? thx:smile:

 

[Oldschool]

18cc if no other modifications were done to the 14cc

 

[minidragbike]

I agree with Oldschool
The way to make the 14cc head to flow the same is to unshroud the intake side. But your CC's will normally go up 1-1.5cc depending on how much you unshroud it. But the good thing is that you will only be at around 15cc when done.