OCC Schwinn Chopper Exhaust?

[BaraaBikes]

Hello, so I am building a OCC chopper 80cc and I running the stock exhaust,which I had to bend in order to clear the pedals,then I noticed the part where it attaches to the engine is bent and I have a exhaust leak, which I’m losing power and four stroking, I’m in the market for an upgrade and I don’t really like the custom exhausts they make for the Chopper so I’m wondering if I could buy the normal Banana pipe (expansion chamber) and being able to clear the pedals without ruining the exhaust. Thank you

 

[Vikingimike01]

The banana pipe isn't an expansion chamber, but it may work
if you're four stroking you're rich, and an exhaust leak produces a lean condition not rich.

take it off and try to hammer it flat see if it works

 

[Chainlube]

I built my own exhaust, kinda starts at #65 here, https://motoredbikes.com/threads/xxxx.56424/page-7 I followed this, http://www.dragonfly75.com/motorbike/torquepipe.html That another published. I had to down size the pipes a bit to fit the area on my bike where I wanted it. It works pretty good, I'm happy to report.

 

[BaraaBikes]

i know it’s not an expansion chamber, I was just referring to it’s looks, the spark plug indicates it’s running rich aswell, but I noticed after I tried to patch the whole with JB Weld steel stick it actually worked pretty well and my engine ran decent for a while but it’s only a temporary solution. I also realized that the engine was really loud and running really bad so when I went to check out the muffler I found a tiny gap between the Exhaust and the engine near the bottom. What do you think is causing my four stroking and loss of power? I only four stroke near low end but once I give it gas the engine Starts running perfectly fine

 

[BaraaBikes]

i also realized this became worse after installing my performance Air filter so I’m guessing I have to fix the exhaust or remove the air filter? I’m going to try and bend the piece back in

 

[Chainlube]

Ha ha, good chance you blew out the exhaust gasket. Remove the pipe and check.

 

[BaraaBikes]

oh haha, I feel stupid the gasket isn’t blown out but it’s like about to fall apart, I’ll buy a new one and see if that fixes it, thank you I never even thought about that

 

[Vikingimike01]

LOL. But if you do have your exhaust off, you should look at the exhaust if its bent or not. Just put the mounting part on a flat surface, and you'll see if it has a bend. And if yes, hammer it out (i had an exhaust bend on me)