Looking to upgrade my fzr250 exhaust

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deejizzle

Well-known member
Hey guys, so I think over the winter I am going to do my first real modification to my 1988 FZR250 (2kr). I want to make it louder, but I am not sure how. Ive tried looking for fzr250 specific exhaust, but have had no luck. I understand that i would have to cut the stock can off and weld a new can on, as well as rejet. If i can grab an after market exhaust or a stock one off another bike, what should i be looking for to ensure it fits? and where can i take it to get it welded.

your help is appreciated, dont know much about exhausts, but i want to make her sound SEXY at 13k, nevermind about redline 18.5k ;)
 
deejizzle said:
Hey guys, so I think over the winter I am going to do my first real modification to my 1988 FZR250 (2kr). I want to make it louder, but I am not sure how. Ive tried looking for fzr250 specific exhaust, but have had no luck. I understand that i would have to cut the stock can off and weld a new can on, as well as rejet. If i can grab an after market exhaust or a stock one off another bike, what should i be looking for to ensure it fits? and where can i take it to get it welded.

your help is appreciated, dont know much about exhausts, but i want to make her sound SEXY at 13k, nevermind about redline 18.5k ;)
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If you didn't want to spend a lot of money, I would recommend this one: http://www.dan-moto.com/DM_INT/yzf-r6-2006-2012-gp-carbon-product-215.html

It's got a double reduction inlet pipe, so it can be cut at two different points to make different sized inlets depending on the size of your stock pipe going into your muffler now.

For the welding/fab work I would recommend Daniel at Heritage Auto: http://goo.gl/maps/QXNoI

-Jamie M.
 
cbcanada said:
@toysareforboys

will that pipe lean out the mixture on the bike?
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I would assume so as that pipe has no baffles so is very free flowing. In googling "1998 fzr250" to find pictures of it, to get an idea of the stock exhaust system, I did read a lot of complaints about how the bike ran after people changed the muffler (loss of low end power mostly).

-Jamie M.
 
The original poster has a rather rare bike. I'd strongly urge that it be left stock:

1) For whatever it's worth, leaving it stock preserves its originality.

2) It doesn't appear that there is much aftermarket tuning support for that model. Few people really know what to do with them. You will be on your own for sorting out the carbs and there is a fairly strong possibility that it will never run as well with a butchered exhaust system as it does with the original-equipment exhaust system. There is more engineering in those exhaust systems than it may appear.

3) Internal parts for the engine are almost entirely unavailable as far as I can tell. If you make a tuning error and melt a piston (too lean) or coke up the rings and seize them (too rich) she's done for good.
 
Learn how to read Japanese and start cruising the JDM sites for an exhaust.
Since the bike wasn't sold on this side of the big pond, no one but Yamaha will sell parts for it.
 
I agree with Brian, I've seen 1 of these in my 17 years of wrenching. Leave it alone and just ride it. If it breaks, for any reason, might as well buy a new bike. A suggestion, is start buying up the consumables on the bike. Example, brake pads, sprockets, stator and regulator. Anything that wears out from normal riding. If not for the fact that my 1988 Yamaha YSR 50 has a cult following to her, parts would have been gone more then a decade ago.
 
Brian P said:
The original poster has a rather rare bike. I'd strongly urge that it be left stock:

1) For whatever it's worth, leaving it stock preserves its originality.

2) It doesn't appear that there is much aftermarket tuning support for that model. Few people really know what to do with them. You will be on your own for sorting out the carbs and there is a fairly strong possibility that it will never run as well with a butchered exhaust system as it does with the original-equipment exhaust system. There is more engineering in those exhaust systems than it may appear.

3) Internal parts for the engine are almost entirely unavailable as far as I can tell. If you make a tuning error and melt a piston (too lean) or coke up the rings and seize them (too rich) she's done for good.
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What he said .... besides it's really bad idea to mess with your exhaust, just to make it nosier. It's not Harley.

Trust me, I have the same bike, although a bit younger and it runs great for what it is. To make it nosier will just open up a pandora box of problems Brian hinted on. Enjoy the bike until you can. It's a great machine, I know why I am saying it .....
 
toysareforboys said:
I would assume so as that pipe has no baffles so is very free flowing. In googling "1998 fzr250" to find pictures of it, to get an idea of the stock exhaust system, I did read a lot of complaints about how the bike ran after people changed the muffler (loss of low end power mostly).

-Jamie M.
Click to expand...

Yes, because the idiots removed the EXUP valve as well .....
 
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