MOPED ARMY

You are doing better than me. I have a mamba with home made silencer (still loud), borrowed 15mm delorto with 65jet, and 11 tooth front and 42 rear. I just set this up today and am getting low 30's for speed. I am four stroking down hills and will try out a 62jet I have tomorrow. It is very humid here so I'm sure that doesn't help.

How do you figure out the cylinder diff? I know my intake is fairly large. We had a small 12mm intake and compared it to my stock one and it was noticeably different (14mm??). I have not done any porting yet as i will be getting a 70cc polini kit to haul my fat ass around. I would like to mess around with my 50cc for the time being and see what I can accomplish. I made another post asking about the other V1 cylinder heads to see what the difference was. I may try to do a little porting with this setup and see if I can get a few more revs out of it. I know that I need more displacement to make my ped more versitile to my riding conditions but I wouldn't mind seeing what I can do with the 50cc cylinder. I guess if it blows then it blows? All and all, its still a moped!!

If I set the timing closer to stock it runs like shit, bogging all the time when I open the throttle.

please elaborate on "molesting the exhaust port"? The pipe I am running is quite larger than the port. I have heard that you need to port out instead of making the ports match as it will fuck up the timing.

Bad visual but you will understand. V is pointing twords the front of the bike.

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V

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yep, widen it and raise it just a bit, but don't lower it(don't cut towards the case, only towards the head) and you'll see instant results, I raised mine about 1.5mm and widend it to about 60 percent of the bore, then polished it and matched it to the headder, and wow, 40-45 easy

BTW this is all the porting I've done so far, opening up the intake.