Pocket Bike Expansion Chamber on 60CC engine

[xtk]

I'm not too keen about exhaust systems but from what Iv been reading around here on previous threads that pocket bike exhausts can be adapted to the bicycle engines.

The pipe i'm looking for is rated for 48 and 49cc, but the impression i'm getting is that it's still acceptable to use. So I was wondering if any one has ordered an expansion chamber of that rating or knows that it may or may not work.

Thanks

p.s. Id post the link but this is my first post.

EDIT: I bought this Mini Pocket Bike Parts Exhaust Pipe Muffler Cag Mta-1:eBay Motors (item 290296177175 end time Aug-12-09 11:18:16 PDT)

Work is done on my ride. I had to cut the pipe, grind an angle on it and weld that sucker back on so it would fit properly. The header on this pipe is roughly 12" I was able to get my bike up to 32 mph on flat land.... Not even 15 minutes of riding I ended up burning my own leg.... So far its red but Ill find out later in the morning if it blisters.

Anyways that was a great investment for my bike, it really gave it a major boost. I also got a velocity stack and an UFO style air filter from Davesmotorsports. It really increased the power in the bike.

[city of angels]

if you got to ebay and type minipocketbike exaust they have them really cheap they carry from and single exaust to a dual exaust

[spad4me]

I weld


Before spookytooth or sick bike parts sold a solution to the need for a bolt on tuned pipe.

I bought this
47cc Pocket bike Performance Pipe.
when it was on sale .

Now sick bike parts offers a bolt on solution.
Sick Bike Parts


The scooters for less works on happytime as well my latest ride a gp 460 with cvt, and freewheel .
If you do not want to weld nasty twisty tight bends just get the sick bike parts exhaust.

[xtk]

Thanks for the word of advice guys.

[freewheeling frank]

i would like to know how they work? i have an old pocketbike sitting doing nothing i think it is a 35cc but ime not sure, anyone out there try this?

[Emerica]

Best upgrade I've done, sbp black chamber.
While the thing ships do the following:

Check over your bike, and then try to tune the carb and any kind of air leaks you might have. Get it running the best it possibly can with the stock pipe. If you go the sbp route and don't have someone to weld a header for you, get some permatex muffler tape, it's an epoxy resin tape. Use that instead of the 3 smaller rubber? covers they supply. They die pretty quickly from heat and crack up. (less than a week) That seals up the header pretty well just by going for a long ride.

Sound is a big change, much more of a dirtbike sound.
Performance is a mix of many factors. The pipe can help tune low end or high end depending on the length of the header and other dimensions of the pipe, so most people will change the header length to where they want it.
Out of the box and on the bike stock install i gained about 9km/h (40km/h to 49) on my top end, with a better/smoother feeling overall, and better pull up hills.
I think i'm a little more jumpy on the really low end.
Don't spend money on boost bottles, nos , and all that other stuff, get a decent pipe.

Someone's going to ask about the sound, I'm pretty sure mines a little louder than stock, but doesn't sound as bad if that makes any sense. You could attach a muffler from a lawn mower shop, basically what sbp sells as an addon. It's not as loud as pulling the cap off the stock pipe. 20% or so louder than stock maybe imo.


http://pxn.ca/images/chamber.jpg
Have fun

[xtk]

I was thinking more along the lines of this pipe. The only problem I think I'm going to have is that it doesn't come with any exhaust manifolds for the engine and im going to be forced to chop up my old one.

NEW! 47cc 49cc Pocket Bike PERFORMANCE EXHAUST PIPE KIT - eBay (item 350227915385 end time Aug-16-09 19:52:42 PDT)

Don't get me wrong, the SBP pipe seems like a nice and easy way to install a pipe, but im going for a asthletically pleasing pipe that has a longer muffler.

[xtk]

Bought and attached, read my first post!

[NunyaBidness]

Anything more to add other than "Work is done on my ride"?
Like pics or something about how it works or how you got it on, maybe even what pipe you did get. I mean, anything is better than "Work is done on my ride" and "Bought and attached, read my first post!".

[xtk]

Originally Posted by NunyaBidness

Anything more to add other than "Work is done on my ride"?
Like pics or something about how it works or how you got it on, maybe even what pipe you did get. I mean, anything is better than "Work is done on my ride" and "Bought and attached, read my first post!".

Funny, I thought you were just trying to be mean, but I just realized my picture didn't show up.