Cylinder head modifications

[madness]

No, i didn't increase injection manifold, but it was not (now it is) smallest hole in chain. In the head, intake channel was about 23mm, now it is about 27mm.

Sure, i manage fuel mixture (forcemaster), as i use 170cc. Later going to manage it more by change ECT data manually (potentiometer).

Filter, i use, is not worse then KN and DNA, it's malossi "red filter", very hi-flow.
Valves are already lightened.

12500 revs! ))) Nooooo, i won't go that way Keep in mind, my engine made in China, it is not pure Honda. In stok i was able to get thees revs, but on BBK with higher compression 12500 sounds a little bit scary.

[waspmike]

Keep in mind this SCOOTER has a "assembled" crankshaft so not made from 1 block of steel but build from more parts,

So may have balanced altered by using a rattle gun to install a variator?

Best I heard was 11,000 rpm on an older MKI PCX.

[robber57]

Using a pneumatic hammer on an assembled crankshaft is not the smartest thing to do, you may hammer 1 of the crankshaft halves out of allignment after which the engine will vibrate or worse.

In my life i have repaired thousants of assembled crankshafts and alligned these and i can assure you that it only takes one small blow from a 200 gram hammer to mis-allign a crankshaft.
To dismantle the vario you should always use a normal wrench and the stopper tool and some elbow grease, eat more spinach and you dont need a pneumatic hammer.

[madness]

Yes, yes, i know...
I use pneumatic hammer in variator only because of broken "hole" (one of two) in half-pulley for stopper.
It was broken using wrong stopper