240-kid

Half Cut



Bench Flow Test

Head Volume (cc's) = 46cc's

BigVinnie

iTrader: (2)

I'm assuming the flow bench test on the bottom is stock flow rate... Is this correct?

240-kid

Yeah, the top one had a Flow Bench error, so I need to remove it


Edited***

BigVinnie

iTrader: (2)

Stickied!
I need this info for some before and after flow bench results on the head work I am about to do.
You can tell that flow can be a little better with the KA head at 99.3 CFM/ per .100" of lift it should have a CFM closer to 98~100CFM. Exhaust seems to be small diameter sizes for smog and scavaging reasons.
I would bet that very little head work needs to be done to the KA and it would have to do more with the valve diameter. I bet just a .040 diameter increase on intake and exhaust would make those CFM numbers go way up!

240-kid

Would it be smart to do a minor port and polish job and over size Int. valves .5mm over and exhaust .7mm over? or would that just not make sense, I figured this since the exhaust size doesn't flow so well.

Seems like 10mm of lift is optimal

BigVinnie

iTrader: (2)

Just minor port, extrude, and polish you don't want to ruin the overall velocity of the runners. I think that improving the valve diameters would be much more critical.
I don't see why you wouldn't just do a .5mm all around, and enlarge the runners on the exhaust a tad more.

240-kid

OK makes sense

added some more head info