MOPED ARMY

Sounds like you are just too rich.

i'm running the EXACT same setup (pantyhose airfilter though), but i'm only about 20 miles into the break in. at first it was terrible in the midrange, but i moved the needle to the second highest position and its very happy. it sounds like your needle is already in the right position if it pulls hard from 1/2 - 3/4 throttle. full throttle is completely controlled by the jet so you should take a ride at full throttle for as long as you can and plug chop. my guess is because i'm basically using no airfilter and my 82 jet is working out you may need a 80 or 78 like you mentioned. give it a try.

Update... 78 was a tad too lean. I am awaiting a new 80, since mine is still AWOL, from mopedshop. When it gets here, I think it will be right on. I screwed my idle screw in almost all of the way, and now it holds a steady idle (although races like a bastard when it's cold). I also droped the needle so the ring is in the top notch, and that helped with my 4-stroking on the low end.

BTW, what would happen if the piston were put in upside down becasue you don't read spanish and assume the arrow means up.....

it sounds to me like your 82 jet was correct. main jet matters mostly from 3/4 to full throttle. from 1/4 to 3/4 is all about needle setting. i think you should raise the needle, and put the 82 back . . . or maybe an 80, since you said you had powerloss at full throttle. also, visually check that what you think is 1/4, 1/2, 3/4, and WOT are actually 1/4, 1/2 etc. sometimes the throttle cable is the wrong length.

Ok, so maybe I should have been more direct. When

I first put the kit on, I put the arrow going up, ran it for like 30 miles, then found the spanish-english translation that said arrow points at exhaust. Oooops. Anyway, I fixed it, the arrow now points down, but my problems with jetting weren't solved by the upside down piston deal.

I am again running the 82 until the 80 gets here. thajnsk for all of your help so far. this site is great when it comes to helping the first timers.

minus the metrakit is basically a completely different bike. just so you know.

I have the same carb, intake, exhaust, air filter. I'm PLANNING on getting the 65cc metrakit and I was just wondering how it performs with those components since I will shortly be running an identical bike.

What you need there Fred is a 2.15 needle jet. That will fix your idle problem. I believe the carb comes with a 2.17 needle jet. The 2.15 is the smallest I've seen for a Bing with a 4 position needle. It will lean out your idle and will make you have to readjust your needle settings for mid throttle. I'd call around and see if anyone has it.

The needle jet is the part the needle slides into. It is also the part the jet screws into from the bottom on a Bing. It has numbers on the side of it. This is the size of its internal diameter. Stay away from numbers with an A at the end. These are only for 2 position needles. And the orifice is sunk in a bit. I wouldn't want you to hang a throttle. Mopedwarehouse will probably have the 2.15 in stock. I checked Handybikes for you. I didn't see it there. Which suprises me a bit. Usually Handybikes has everything like that.

150 lbs of compression is normal. Did you get a jet yet?

I don't know about iron cylinders, but I had a stock chrome bore cylinder with faint hatch marks. It had about 1000 miles on it, and it was broken in. Start with the 88 and go down if it is too rich. You really need to do plug chops or have a head temp gauge to get an accurate idea.

Did you spray everything with carb cleaner to look for leaks? You said yourself that it idles high and the white plug is another pointer. You'll notice that the bike idles smoother and that it needs to have the idle screw turned a little. I forgot if it idles faster or slower though. Maybe somebody else here will chime in.

Eric

what pipe ya running?