Water Atomization & Smooth Manifold Walls

[NAnderson]

This question kind of relates back to the days when carburetors and "wet flow" intake manifolds (fuel and air mixture flowed through the manifold, not just air) were the norm. So, all you "old timers" chime in. :wink:

I'm thinking of having an intake manifold Extrude Honed and am concerned about the atomized water falling out of suspension as it travels through the manifold. Most race shops that deal solely with carburetors highly recommend NOT Extrude Honing the intake manifold as the roughness of the casting causes a desirable disruption in the airflow and prevents the fuel from puddling on the runner walls. Should I be concerned at all about this with water/methanol injection and smooth runner walls in the intake manifold?

BTW, this is in a port-injection setup with each nozzle ~5" (12.7 cm) away from the cylinder head. My one saving grace may be that this is a three-piece manifold and I could have the two pieces of it that flow only air Extrude Honed, and leave the final piece that the nozzles are in rough, as-cast.

Comments or thoughts?