MOPED ARMY

Did you re jet the carb? Carbs are universal really they do not come set up for your bike from the factory.

Oi you diddnt jet it quit riding until you do, it may seize the engine if your too lean. Might have already damaged it.

Just interested, what difference were you looking for?

I recently changed the reeds, and gasket, intake and added the 15 sha to my otherwise stock 103.

I changed the main jet a bunch but went back to the 68 that came in it.

My exhaust is de-restricted, and the airfilter on the sha is down to very little.

This ped now takes off a lot stronger, goes up hills faster, and goes 37 or 38 on flat ground.

I haven't messed with the variator and balls and stuff.

When first starting an unknown build, the choke lever can be your friend. once the bike has warmed up on the stand you can get an idea of your present rich/lean condition by slowly squeezing in the lever.. If the Rpms start to drop as soon as you move the lever in a tiny bit and the bike is on the verge of dying at 3/4 in then you should be safe to continue with other testing.

Then grab the thottle and twist it to about halfway and repeat the choke pull test. You should get about the same results.

If you do the half throttle chole test and you dont have a significant drop in RPM or rich blubbering at 3/4 choke pull or you cant kill the bike with full choke at half throttle then you are probably jetted way too lean or small.

This is just a poor mans ball park methed of finding a staring point

Hi Justin, in response to your PM...

I figured I'd post here so others can maybe benefit...

Yeah, the Dakar carb is definitely a nicer carb...I took it off because I got to a point where it was not tuning very well for me...worked great, then didn't...anyway, if it works for you then awesome! As far as the slow take off, I've had success in the past by removing 3 of the balls from the Variator and then adding a star spring (so you have 2)...it definitely works but I feel it might put some strain on the whole vario so I usually go with just the 3 balls...You could also just get a launch lever to rev it out for take off. Basically, you're going to need to do your due diligence and do some research on the MA site. I like to tinker so for me it's fun, if you don't it can cause issues if you're just looking for quick fixes.

here is an article from Cheetah about the proper way to disassemble the vario and (more importantly) put it back together:

https://www.mopedarmy.com/wiki/Peugeot_103_stock_clutch/variator_assembly_by_Cheetahchrome

That being said, the vario can be tricky so follow the directions perfectly...to lock the crank, remove the sparkplug, stick some nylon rope down the sparkplug hole into the cylinder to prevent the piston from moving in the cylinder. then get your socket and remove the vario nut by turning CC...hold everything together with both hands to remove so that parts and pieces don't come falling out!

There are a ton of posts on modifying the vario on MA so you can just search for help.

Also, a lot of folks swear by this which is made by Cheetah for Treats...turns it into a pull start so no more starter clutches:

https://www.mopedarmy.com/wiki/Peugeot_103_stock_clutch/variator_assembly_by_Cheetahchrome

Also you can get this for the MBK cdi which makes your points setup obsolete and makes setting the timing really easy.

basically, if you want to start ripping you're gonna have to invest either

a) time and research

b) money