Well hello! First post here! My first experience on a motorized 2 wheel was a couple years ago on a friends Honda express. I knew I wanted one eventually. In february I put an add out on CL looking for a moped for 300 or less. A guy wanted to sell me 2 for $300. I said "great!" Picked both them up, sold the non-working one for $350 and was $50 ahead on my first purchase. 1978 Puch Newport L. She's a beaut ain't she?
Drove really well when I got it (basically stock), going around 29mph. Streets here in Des Moines, IA are almost always 35 if not 45, so I have been on a journey to get her up to speed. I'd love to get 45-50, though I'd be satisfied with 40. This seems very do-able by the research I've done. To start, I invested in a new 15mm bing carb and intake, as well as a estoril with side-bleed from treats.
Carb and intake install? Piece of cake. The exhaust though? The install has not been as straightforward. After searching the site, I haven't been able to find a straight answer. I'd appreciate any pointers from folks who've been in the same situation.
I removed the pedals because right away I could see they were going to be an issue. I'll get one of those 260mm pedal crank shafts on treats. Out of the box I tried to get the exhaust header to sit flush against the exhaust port, but no luck. I noticed the new header's dimensions were larger than the stock pipe, so I did a bit of grinding which helped. I'm just a mm or 2 away from it seating properly. What seems to be in the way is the moped's exhaust mount (sorry, don't know name) that extends from the pedal shaft. Another developing problem are the threads where I bolt the exhaust to. With all my trial and error fitting, the threads are starting to flatten.
What is best practice for getting this pipe to fit?
I'll also say that I do not have a welder though I may be able to borrow one. I also have a metal fab friend who may be able to lend a hand if I really get in a pinch.
On this subject as a whole I am a novice at best... so please be kind:)