107", JE pistons, 10.75 cr, S&S 640, ported heads, 1.98 int, 1.61 ex, 54mm TB, 4.9 inj.
So the one pic is stock and the other is after you ported it?
Oh ok.Exhaust 215 and intake 305 , both ported
Don do you need new inlet seats for inlet for that size as its near enough to 2" if lm reading right at 1.98. Also is that your CNC workTis CNC and hand ported head is exactly what you mentioned, 1.98 X 1.61. See the flow results. It also is 80cc, has had ACRs added, chamber is CNC milled, and intake face corrected. See the photo of the flow numbers. Come on down to Seattle and I will test your heads and we can compare.
Your getting 100 hp at 5000 rpm from a 80cu evo so you must be doing somthing right Troqed.To see if his big arse wind tunnel could beat mine?
I would hope as a professional Porter his would? LOL
After all, all I own is an old Sioux!
Somewhere between Reynolds numbers, boundary layers, and the venturi effect the power has to hit the ground..
That is the results I look for .
The truth is what the engine will put out, not what a windbag will push.
Bernoulli Princaple ( spells wrong but i hear ya)Actually, I do try hard. ....many many things.
For those that do not know dimples have some genuine attributes and that's the next step.
It would be more EZ to get power way upstairs @ higher RPM, , but the goal was a usable touring engine with Baker Overdrive in the little itty bitty 80-inch engine.
Not 125 inch or larger chunk.
This engine would put out a lot more power with a different cam in it . .
But again that would be just for dyno bragging rites and serve no useful purpose in real life.
What we need here in the old V twin is variable cam timing and event configuration.
I thought S&S was going to get it done with their EZ start cams, but they quit at that!
Ya just cants have a fast wing and a slow wing, without changing the configuration, it is all a compromise.
Bernoulli and other big words all come into the action of ports or wings, only on a miniature scale.
My reply and invite was to you because you are in BC Canada not that far away.Oh ok.
I didn't like the performance from my heads last summer so they're off and is why I want to know so much about velocity speed. Mine are at 275 @ 28 right now....they should be more....but I dont want to take more out and lose velocity where its needed.
I haven't ran the exhaust port on the bench yet. But that 305 is sweet!
What size valves are those?
I believe and I'm sure I'll be corrected if wrong. A stock intake seat work up to 1.9 then you need a larger seat installed.Don do you need new inlet seats for inlet for that size as its near enough to 2" if lm reading right at 1.98. Also is that your CNC work
That would be a cool road trip Don, but I haven't been across that line since I was 17....lol Not by choice. I may be able to now though, just haven't tried.....It's something I was going to try this Summer on the bike. There's lots to see down South so I'm hoping that run works out.I was talking to Street.sweeper as his profile says BC canada location
The dimples are done by some CNC houses and in my opinion are much more cost without verified results. I have not tried them but in my opinion there is a lot more low hanging fruit to be had, the basics, that will get the job done with value added. Consider that these dimples are not used by NASCAR or the OEMs including exotics and if they were so effective why not. I would expect a slight improvement in airflow only.