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-   -   I did it! I cut my muffler off and added a new one. (http://www.gz250bike.com/forum/showthread.php?t=5406)

Rookie Rider 05-08-2012 09:16 PM

I did it! I cut my muffler off and added a new one.
 
http://s13.postimage.org/de7klmdlf/1336524620966.jpg

http://s14.postimage.org/evput8a0t/get_attachment.jpg

http://s14.postimage.org/igqbq73y5/1336524682088_1.jpg

Skunkhome 05-08-2012 10:07 PM

Re: i did it, i cut my muffler off and added a new one.
 
Very nice looking is it the same EPA spec as the original ?

Rookie Rider 05-08-2012 10:13 PM

Re: i did it, i cut my muffler off and added a new one.
 
No idea.

PimpS 05-09-2012 05:43 AM

Re: i did it, i cut my muffler off and added a new one.
 
Nice bike there! How much for the non spoke tyre?

alantf 05-09-2012 07:00 AM

Re: i did it, i cut my muffler off and added a new one.
 
I notice that it's got a different brake rotor. Did you have to change the caliper too? (and caliper mounting points)

Rookie Rider 05-09-2012 07:15 AM

Re: i did it, i cut my muffler off and added a new one.
 
Thats how i got the bike, all i did was was paint the header pipes, motor and rear suspension, and change muffler.

jonathan180iq 05-09-2012 09:07 AM

Re: i did it, i cut my muffler off and added a new one.
 
RookieRider's bike's previous owner apparently installed the wheels from one of the Chinese clone GZs, which came in non-spoked. I don't think anyone is sure exactly what was needed to make the cross over a complete success but it's obviously possible.

Rook, have you pulled the carb yet to get your jetting underway? Until you do that, you're going to find that it's almost un-rideable.

Rookie Rider 05-09-2012 12:57 PM

Re: i did it, i cut my muffler off and added a new one.
 
Havent ridden the bike yet, its been raining. Im hoping to ride tomorrow and see what my next project is with the bike. Jetting, fuel mixture etc. Hoping it will be just fine and i wont have to do anything.

jonathan180iq 05-09-2012 01:48 PM

Re: I did it! I cut my muffler off and added a new one.
 
You will most definitely have to do something, brother.

Running like that without adjusting anything, even if it feels OK, can hurt your bike long term. If you're too lean over long periods of time you're overheating the bike more than necessary and you can also burn your valves. Don't do it.

At least pull the bowl and change the main jet to a 125+/- or something just to be safe. Once you've pulled the carb one time, you'll be a pro at it.

Pilot adjustments, needle shims and everything can come later if you want to really put it off. Just don't ride around like that for too long. You'll end up regretting it and you won't get nearly as much joy out of getting a little bit more power as you could have.

Some useful links:
Dupo's Muffler Swap - viewtopic.php?f=8&t=19

Needle Shim Mod - viewtopic.php?f=8&t=15

Jaime's Power Increase - viewtopic.php?f=8&t=617

In those three threads alone you should find just about everything you need to know about getting your jetting right.

I also worked on some crap a long time ago that might be useful if you like long-winded reading and over-thinking:

Jetting: Part 1 - viewtopic.php?f=9&t=513&hilit=jetting

Rookie Rider 05-09-2012 01:59 PM

Re: I did it! I cut my muffler off and added a new one.
 
How about i put in a 135 jet, and where can i buy it ?


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