Register Community Calendar Today's Posts Search

Go Back   GZ 250 Forums > GZ250-Specific > Performance

Reply
 
Thread Tools Display Modes
Old 05-08-2012, 10:16 PM   #1
Rookie Rider
Senior Member
 
Join Date: Jun 2011
Location: Queens, NYC
Posts: 1,263
I did it! I cut my muffler off and added a new one.








Login or Register to Remove Ads
Rookie Rider is offline  
Reply With Quote
Old 05-08-2012, 11:07 PM   #2
Skunkhome
Senior Member
 
Join Date: Mar 2012
Location: Louisiana
Posts: 203
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 ?
Skunkhome is offline  
Reply With Quote
Old 05-08-2012, 11:13 PM   #3
Rookie Rider
Senior Member
 
Join Date: Jun 2011
Location: Queens, NYC
Posts: 1,263
Re: i did it, i cut my muffler off and added a new one.

No idea.



Login or Register to Remove Ads
Rookie Rider is offline  
Reply With Quote
Old 05-09-2012, 06:43 AM   #4
PimpS
Senior Member
 
Join Date: Dec 2011
Location: Slovenija
Posts: 475
Re: i did it, i cut my muffler off and added a new one.

Nice bike there! How much for the non spoke tyre?
PimpS is offline  
Reply With Quote
Old 05-09-2012, 08:00 AM   #5
alantf
Senior Member
 
alantf's Avatar
 
Join Date: Nov 2008
Location: Tenerife (Spain)
Posts: 3,719
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)
__________________
By birth an Englishman, by the grace of God a Yorkshireman.



Login or Register to Remove Ads
alantf is offline  
Reply With Quote
Old 05-09-2012, 08:15 AM   #6
Rookie Rider
Senior Member
 
Join Date: Jun 2011
Location: Queens, NYC
Posts: 1,263
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.
Rookie Rider is offline  
Reply With Quote
Old 05-09-2012, 10:07 AM   #7
jonathan180iq
Super Moderator
 
jonathan180iq's Avatar
 
Join Date: Jan 2007
Location: Dalton, GA
Posts: 3,996
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.
jonathan180iq is offline  
Reply With Quote
Old 05-09-2012, 01:57 PM   #8
Rookie Rider
Senior Member
 
Join Date: Jun 2011
Location: Queens, NYC
Posts: 1,263
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.
Rookie Rider is offline  
Reply With Quote
Old 05-09-2012, 02:48 PM   #9
jonathan180iq
Super Moderator
 
jonathan180iq's Avatar
 
Join Date: Jan 2007
Location: Dalton, GA
Posts: 3,996
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
jonathan180iq is offline  
Reply With Quote
Old 05-09-2012, 02:59 PM   #10
Rookie Rider
Senior Member
 
Join Date: Jun 2011
Location: Queens, NYC
Posts: 1,263
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 ?
Rookie Rider is offline  
Reply With Quote
Reply




Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:07 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.