2003 cr 250 pipe?
- Thread starter dsguru
- Start date
I just ordered an FMF Fatty Factory w/ PC-2 silencer for my '03 CR250, so I'll be able to tell you my impressions next week hopefully. Also, I have radiator braces installed. I chose the Works Connection ones. Have had them on a few other bikes and have not squished my radiators yet. One other upgrade you might look at is sprockets and chain. My stock chain just kept on stretching and stretching. So I replaced with Renthal sprockets and a DID ERT chain. No stretching now! I also have done the MX-Bonz airbox upgrade. Stock setup is junk IMHO. UHmm... That's all I can think of now. I would do the airbox first though.
dsguru, mine's an '02 raather than an '03 but I think the results are probably similar, I have tried a lot of mods looking for more low to mid the most effective were 1. porting and head work, very effective, 2. power now, I couldn't believe this little wing made as much difference as it did, 3. PC pipe and silencer, I dinged mine up and went back to stock, not nearly the difference I had thought it would make. If I were starting with a new one I would probably pop a power now in it first and then send the motor to EG. Of course if you're looking for more top end I am no help at all. :laugh:
overall most people think the stock pipe is the best for the 03 CR250. You can alter the powerband with a different pipe. FMF fatty is close to stock. the sst gives more over rev. You will not notice a real big power change if all you do is change the pipe.
Case Reed CR250's need to be jetted really close to perfect or they're dogs. Get the jetting right and the engine is pretty sweet. I ended up running 1/2 vp c-12 and 1/2 91 octane at 40:1 and my bike works pretty good all the time. I think I dropped the main two steps and went up one on the pilot. the stock needle is too rich also
Case Reed CR250's need to be jetted really close to perfect or they're dogs. Get the jetting right and the engine is pretty sweet. I ended up running 1/2 vp c-12 and 1/2 91 octane at 40:1 and my bike works pretty good all the time. I think I dropped the main two steps and went up one on the pilot. the stock needle is too rich also
mos11b, the Power Now is an insert that sits in the throat of the carb, it has a wing horizontally across it. I am not sure of all the physics involved, but I believe the concept is that is smooths the turbulence out of the airflow and speeds it up at lower throttle settings, improving throttle reponse. I can tell you it makes a pretty big difference on my '02 :)
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- Jun 21, 2000
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I like DeVol rad guards better because they are stronger. They restrict airflow a litle bit though. If you are always trail riding in first gear, the lack of airflow may be a problem.
For the motor: The best mod is Eric Gorr porting-no question about it. There is no way on earth a simple pipe change can repair the goofy Honda port layout. Sure a pipe and silencer can help though, but it is more expensive than porting so IMO don't see why you would want that.
For the motor: The best mod is Eric Gorr porting-no question about it. There is no way on earth a simple pipe change can repair the goofy Honda port layout. Sure a pipe and silencer can help though, but it is more expensive than porting so IMO don't see why you would want that.
