GZ 250 Forums - View Single Post - UPDATE - New K&N Filter, Emgo Muffler, and Carburator Mods

David Bo · 04-28-2009, 10:48 PM

Musicman - The name of this link is called PERFORMANCE MODS. I believe it was created for members to communicate to one another on how to perform these modifications. Have you done any of these carburator or exhaust modifications on your bike? By the way, what makes you think that these GZ's are tuned for optimal performance when they leave the factory? Are you saying that every car, bike, or truck is tuned to it's optimal performance when it sits on the showroom floor?

Optimal is defined (by Webster) as "most favorable or desirable". Who decides what is most favorable or desirable?

I had a 2000 Suzuki Marauder 800 a few years ago and had a new Cobra exhaust system put on and had the two carburators re-jetted. A friend of my had the same year bike at the same time as me but chose not to have anything done to enhance his bike's performance. All I can tell you is that those engine modifications on my bike turned that 805cc engine into a rocket! He could never beat me off of a start and I am sure my top speed was higher than his or, at the very least, I could get there much faster.

Are you really telling me that adding more fuel (or rather more fuel mixture) into the cylinder of this single cylinder 249cc motorcycle will NOT increase the engine's power? BTW, you stated

"if you change any one of those things to a less than optimal level, than you are not going to get more performance out of your engine, you are just gonna waste gas, because your engine will not use fuel/air it does not need and it will just go out the tailpipe."

I didn't change "any one" of those things, I changed ALL THREE of those things (K&N air filter with no air flow restricter, carb mods to increase the amount of gasoline mixing with the increased amount of air, and a less restrictive exhaust system to lessen the back pressure).

As a result, I honestly feel that I have gained "some power" from this little engine. Or maybe a better term would be "throttle response"... It has made the bike a little more desirable to me :cool: .

04-28-2009, 10:48 PM	#22
David Bo Member Join Date: Apr 2009 Location: Northbridge, MA Posts: 96	Re: UPDATE - New K&N Filter, Emgo Muffler, and Carburator Mods Musicman - The name of this link is called PERFORMANCE MODS. I believe it was created for members to communicate to one another on how to perform these modifications. Have you done any of these carburator or exhaust modifications on your bike? By the way, what makes you think that these GZ's are tuned for optimal performance when they leave the factory? Are you saying that every car, bike, or truck is tuned to it's optimal performance when it sits on the showroom floor? Optimal is defined (by Webster) as "most favorable or desirable". Who decides what is most favorable or desirable? I had a 2000 Suzuki Marauder 800 a few years ago and had a new Cobra exhaust system put on and had the two carburators re-jetted. A friend of my had the same year bike at the same time as me but chose not to have anything done to enhance his bike's performance. All I can tell you is that those engine modifications on my bike turned that 805cc engine into a rocket! He could never beat me off of a start and I am sure my top speed was higher than his or, at the very least, I could get there much faster. Are you really telling me that adding more fuel (or rather more fuel mixture) into the cylinder of this single cylinder 249cc motorcycle will NOT increase the engine's power? BTW, you stated "if you change any one of those things to a less than optimal level, than you are not going to get more performance out of your engine, you are just gonna waste gas, because your engine will not use fuel/air it does not need and it will just go out the tailpipe." I didn't change "any one" of those things, I changed ALL THREE of those things (K&N air filter with no air flow restricter, carb mods to increase the amount of gasoline mixing with the increased amount of air, and a less restrictive exhaust system to lessen the back pressure). As a result, I honestly feel that I have gained "some power" from this little engine. Or maybe a better term would be "throttle response"... It has made the bike a little more desirable to me :cool: .
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