48cc Porting Job

Hello all,
started my first port job of a new 48cc jug I got for my motor a few weeks ago. I noticed nobody is doing these for the lil 48cc motors, and since I am a certified machinist (although I never chose to actually work in the field) I do very much enjoy it, I may start to offer some 48cc ported jugs.

I have access to a mill and my dremel flex setup of coarse, and was able to get an end mill into the ports to do some very precision work to the bottom of the intake and the roof of the exhaust ports. Allowing me to retain very specific heights that I got off of this site http://www.dragonfly75.com/motorbike/157-117.html

Then I used the flex shaft dremel to clean all the flashing from the transfer ports, and believe me there was a lot of flash and ridges restricting flow.

I plan on also machining the top of the cylinder where the gasket goes, to be perfectly flat with a fly cutter bit, and eliminate the lapping process with sandpaper. In conjunction with a Puch Hi Hi 50cc head (also precision machined I should be able to get away with no head gasket, although I probably will use one.

I am planning of having some 48cc head gaskets laser cut from .025 thick copper sheet, and will have some of those for sale once I get them made up, since no one actually sells the copper part for the smaller 48cc motor.

Here is the bottom of the intake port machined

Here is the roof of the exhaust machined

here are the transfers cleaned up

Inside of the intake port roughed up for atomization

Thank you, I am waiting myself for the results. As of now my stock cylinder is doing 41 mph so I am hoping for 45 mph with the port job and ramped piston.

Stock cylinder, it has a bit of. Mods to the outside, puch 50cc hi hi head, true dellorto 16.16 carb, manic mechanic billet short intake manifold, and sbp pipe.

breaking this one in now but it rely revs, seen 8200 rpm so far and the power kicks in hard from about 5500 to 8000

Thanks, let me know if you need one