Well, it seems that earlier this evening, in the year of our Lord 2020, I reached somewhat of a milestone.
With little or no fanfare, I finished the flow tests on the 1100th set of Harley heads
which I have ported and flowed over the last 30 years. And, as if to mark the occasion, it seemed that they flowed unusually well. Well enough, in fact, that I
took the extra precaution of checking the SuperFlow SF600’s calibration to
confirm that the figures are in fact correct.
Funny how I have never gone so far as to check the calibration when a
set of heads did not meet expectations (immediately back to the porting bench instead), but
I have performed the ritual a number of times when the figures were suspiciously
good.
This set of heads happened to be stock Evolution
castings with 1.900” intake valves – a time tested formula. 280 cfm @ .600” lift and 28 inch test pressure. And yes they flow more at higher lifts, but
face it, they will never see a cam larger so why brag about the higher lifts?
As it turns out, performing the calibration was a bit of overkill, since checking the records for
the last set of similar heads revealed nearly identical results. Oh well - calibration is never a bad thing.
BTW, set 1101 is on the workbench and 1102 is in queue.
2 comments:
Way to go Gramps!!
congrats LEE.
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