KA Head Flow Rates
 

Half Cut

http://a986.ac-images.myspacecdn.com...c7f9023a79.jpg

Bench Flow Test

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

:bigok:

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

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


Edited***

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!

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 :)

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.
Attachment 17717Attachment 17718

OK makes sense :)

added some more head info