From what I remember reading, the 6 ports on a 13b N/A do not output the same ammount of fuel as the primarys. If both housings and rotors are the same compression to begin with, what is the point of this? Shouldn't it be an even distribution of air/fuel to both rotors?

..What I am trying to do is figure out a way to go from 6 port to 4 ports by removing the sleeves and grinding.

The 2 1 1/2in holes for the 6port and 3rd 4th ports <i>could</i> be grinded to an egg shape, same on the manifold side. This would allow more flow, but would it make that much of a difference? If you did this could you extend it out to a bridge port even though its a 6 port housing?

I think there is alot more manifold and housing porting than people are actually doing that could be used.

Anyone had similar ideas, or why it wouldn't work?

 

If you ground the 6 ports into 4, the port would be so huge that you would need either hellacious boost or rpms to get any gain out of it.

IIRC Kahren did this and reccomends against it.