[Steve C.]

If interested here are reported flow numbers for a set of Dave Bisschop KRE D-port 82cc 300-305 CNC ported heads / 2.110 & 1.770 valves w/ 45 degree seats. Note, these numbers are from 2010 and they might be similar to Ernie's current '305' heads, but that would be a guess on my part. Numbers from one cylinder tested at 28 inches. No intake runner volume reported.

Intake:
.100 74.7
.200 148.4
.300 211.4
.400 260.1
.500 290.4
.600 304.3

Exhaust:
.100 68.5
.200 127.2
.300 167.1
.400 195.4
.500 218.9
.600 231.5

Average exhaust-to-intake flow ratio thru the lift curve is 78 percent. And my stab at the current exhaust lobe in use from the information within the link I posted, it's Magnum lobe 3123B with 246 at .050" and .4000" lobe lift. And the obvious, the intake cam specs I mentioned previously were the regular Old Faithful vs the revised OF 2.0 version. These lobe numbers are right from the Comp Mater Lobe Profile Catalog.


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