put my SF on the dyno.
 

I have a 340 kit, Two bros Fully exhaust, dynojet kit, snork out. Runnign 128 main and needle second clip. 1.75-2 turns on a/f screw.

28.3 WHP and 21 Ft lb. not bad for the little bike.

My afr was a little rich like 12.9-13.5 WOT but its definitely acceptable. Especially when its 90 degrees out. Itll be safer for winter months.

My cruising afr under 5k was acceptable like 13.5-14

After 5k the ignition switches to more advanced curve so it ran a little leaner until half throttle which was normal.

https://www.kawasakiforums.com/forum...pictureid=2165

A touch lean, but almost perfect at WOT. Under 12.5 would be a little rich. Ideal is roughly 12.8-13.2, and you're right there.

what kind of dyno was this on? and whats your elevation? those are pretty impressive numbers.

Do you have any dyno sheets?

I would be interested to see what rpm your motor makes max HP and torque at?

Here are a few of my sheets from my dyno run. I have a BB351cc, web 101 cam, ported & polished, FMF powerbomb, 2Bro silencer, BB34mm carb, and kdx snorkle.

Attachment 16391

Attachment 16392

Attachment 16393

One of these days I want to see dyno runs of one same motor with
- no airbox lid
- lid on, no snorkel
- KDX snorkel
- stock snorkel

--
Mikko

Nice Will, a solid 33 hp, that head work was worth it. :D especially considering it started at 18 hp or so.

Hey, d0gg .... post up your dyno if you can.

You do know that Stochiometric efficiency of a combustion engine is 14.7:1

Anything less than 14.7:1 is rich, anything more than that is lean

Dont believe me, call me a liar then read it for yourself

http://en.wikipedia.org/wiki/Air-fuel_ratio

Another expert.
You can run your bike at 14.7, but I won't.

Do a search for best power air fuel ratio. Let me know what you find.

Looking at those numbers again, he's so close to perfect at WOT, I wouldn't touch the main.

I agree with what he is saying. 12's are rich... 13.5-14 is about as perfect as your going to get with the additives in the pump gas in the US.

You clearly have no idea what you are talking about.