Register Community Calendar Today's Posts Search

Go Back   GZ 250 Forums > GZ250-Specific > Performance

Reply
 
Thread Tools Display Modes
Old 06-11-2011, 07:31 PM   #1
geezer
Senior Member
 
Join Date: Mar 2011
Location: dahlonega GA
Posts: 563
going for it!

ok i want to start messing with the bike now. as for intake i think a simple kn filter will do the job there. my question is the exhaust, i was thinking of moding the stock pipe. i have never seen a aftermarket slip on for it so i figure its the best thing to do. i want to open it up and remove some of the baffles but not al of them, and maybe open up the tip a half inch or so. rather than drilling the holes i just think that looks tacky. so what do you all think about that?
__________________
99 gz 250 and a currently dismantled fzr 1000



Login or Register to Remove Ads
geezer is offline  
Reply With Quote
Old 06-15-2011, 02:23 PM   #2
MadCityRider
Member
 
Join Date: May 2011
Location: Madison
Posts: 47
Re: going for it!

Check out the pictures I posted of my "slash downs" here: viewtopic.php?f=2&t=4645

If you like those, I can tell you how I did them. No welding required, just a radial grinder, and a few other basic tools. They look good, sound great, and in combination with the 16T sprocket, K&N intake, and 130 Main Jet have made this bike very fun to ride (without any of the slow uphill / no top-end negatives I've seen on the forum).
__________________
:rawk:

- MCR
MadCityRider is offline  
Reply With Quote
Old 06-15-2011, 02:32 PM   #3
jonathan180iq
Super Moderator
 
jonathan180iq's Avatar
 
Join Date: Jan 2007
Location: Dalton, GA
Posts: 3,996
Re: going for it!

Any universal muffler can be made to fit. I wouldn't alter the headers at all.
Just make a cut where the muffler joins the head pipe, replace the muffler with whatever you choose, but dampen it at least a little bit. Straight pipes are crazy loud...

Also, unless you are ready to go all-in, don't get started. You can't do a half-way job and expect anything but headaches.
Be prepared for trial-and-error jetting and a couple of hiccups along the way.



Login or Register to Remove Ads
jonathan180iq is offline  
Reply With Quote
Old 06-15-2011, 06:56 PM   #4
MadCityRider
Member
 
Join Date: May 2011
Location: Madison
Posts: 47
Re: going for it!

Quote:
Originally Posted by jonathan180iq
Any universal muffler can be made to fit. I wouldn't alter the headers at all.
Just make a cut where the muffler joins the head pipe, replace the muffler with whatever you choose, but dampen it at least a little bit. Straight pipes are crazy loud...

Also, unless you are ready to go all-in, don't get started. You can't do a half-way job and expect anything but headaches.
Be prepared for trial-and-error jetting and a couple of hiccups along the way.
Agree with all of this :2tup: This is exactly what I did. The Jardine Muffler I used has a full Baffle in it to compensate for the much wider output. As long as you have some time, and are willing to do a little trial and error, you should be fine.
__________________
:rawk:

- MCR
MadCityRider is offline  
Reply With Quote
Old 06-15-2011, 08:29 PM   #5
geezer
Senior Member
 
Join Date: Mar 2011
Location: dahlonega GA
Posts: 563
Re: going for it!

oh great thank you guys :biggrin: i am going to order the filter tonight for it. and that will take care of the intake side. also i found a pipe on ebay specific for our bike im going to use. its only around 70bucks so that sounds good to me. anyone else got any ideas on cheaper alternatives? the jardine you got doesnt tickle my fancy :lol: no messing with the header at all. and i know i will have some fun messing with jetting, but its not going to be hard at all. im used to inline fours! hahaha so glad i dont have to worry bout sync. i was wanting to go up a tooth in the rear to help with gettingaround at 60mph
__________________
99 gz 250 and a currently dismantled fzr 1000



Login or Register to Remove Ads
geezer is offline  
Reply With Quote
Old 06-15-2011, 10:19 PM   #6
geezer
Senior Member
 
Join Date: Mar 2011
Location: dahlonega GA
Posts: 563
Re: going for it!

help im havng a touch time deciding on a muffler to use, what have you guys used? also where do i get this kn airfilter?
__________________
99 gz 250 and a currently dismantled fzr 1000
geezer is offline  
Reply With Quote
Old 06-15-2011, 10:28 PM   #7
blaine
Senior Member
 
blaine's Avatar
 
Join Date: Feb 2010
Location: P.E.I. Canada
Posts: 3,784
Re: going for it!

Quote:
Originally Posted by geezer
oh great thank you guys :biggrin: i am going to order the filter tonight for it. and that will take care of the intake side. also i found a pipe on ebay specific for our bike im going to use. its only around 70bucks so that sounds good to me. anyone else got any ideas on cheaper alternatives?
A good alternative is the Hiflo-Filtro HFA-3503 a good flowing filter at about a third of a K & N.The pipe I used was just a universal one with a adjustable baffle.
:cool:
__________________
If at first you do succeed, try not to look surprised.


blaine is offline  
Reply With Quote
Old 06-16-2011, 12:26 AM   #8
geezer
Senior Member
 
Join Date: Mar 2011
Location: dahlonega GA
Posts: 563
Re: going for it!

ok all parts are ordered, i hope i got the right muffler, twas a pain ordering and i just wanted to gt it overwith. anyways carb is now leaking like a lactating nipple so i gotta replace the float bowl gasket yaya! also blaine i ordered that filter too thanks for your help
__________________
99 gz 250 and a currently dismantled fzr 1000
geezer is offline  
Reply With Quote
Old 06-21-2011, 07:58 PM   #9
geezer
Senior Member
 
Join Date: Mar 2011
Location: dahlonega GA
Posts: 563
Re: going for it!

and a pain insalling! i didnt want to weld it to the header but looks like im gonna have to. im going to take it to a muffler shop tomorow and get that done. the intake growl is intoxicating! i love hearing it when i get on it. not as excited witht he muffler though. i am so glad its not overly loud though. ill see how it runs tomorow in the sweltering heat hope i can leave the carb alone now
__________________
99 gz 250 and a currently dismantled fzr 1000
geezer is offline  
Reply With Quote
Old 06-21-2011, 08:45 PM   #10
blaine
Senior Member
 
blaine's Avatar
 
Join Date: Feb 2010
Location: P.E.I. Canada
Posts: 3,784
Re: going for it!

Quote:
Originally Posted by geezer
the intake growl is intoxicating! i love hearing it when i get on it.
I liked the sound of the free flowing filter.My 454 with pod filters is really loud!
:cool: :2tup:
__________________
If at first you do succeed, try not to look surprised.


blaine 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 04:11 AM.


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