2005 CRF250R Mods


12 replies to this topic
  • Terry_Blake

Posted 24 February 2005 - 06:40 PM

#1

I'm not asking how to jet the bike!! I just want to know if the JD Jetting Kit works better than stock jetting on the 2005 CRF250R?


Thanks

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  • handlebar

Posted 24 February 2005 - 06:43 PM

#2

On the 04x it rocks...really wakes up the bottom end.!!

  • angrytim

Posted 24 February 2005 - 06:59 PM

#3

I don't know the answer, but when I looked @ it the jet sizes were too small for the 05.

Stock Pilot 04 - 40
Stock Pilot 05 - 42
Stock Main 04 - 160
Stock Main 05 - 172

I run a 48P 178M and stock needle. This is w/ a Factory 4 setup. I'll probably
drop to a 45P and 175M when it warms up here.

  • Terry_Blake

Posted 24 February 2005 - 08:40 PM

#4

Thanks!

I have the JD Jetting Kit in my 2005 KTM 450EXC and it really works well. I also had it in my 2004 KTM 450EXC and it also worked well. Just don't know about the 2005 CRF250R.

I just put the 2005 White Brothers Carbon pro exhaust on the CRF250 R and was also wondering if the JD kit will work with the pipe. Anybody running this combination? I haven't ridden the bike with the WB pipe yet.

Thanks

  • Howdydudy1

Posted 25 February 2005 - 04:57 AM

#5

Terry,

I have the jetting in my '05 CRF250R. This is one of the best mods you can buy for under $80. You may also want to go to your local honda dealer and pick up a 155 leak jet. Also take out the stock filter and backfire cage and put in the twin air filter. Trust me it works! This jetting will work with any pipe. Go under the jetting section and ask James Dean. He will have the right setup for you! Good luck!

  • Lunchboy

Posted 25 February 2005 - 10:23 AM

#6

Yes, it helps the 05 250.

  • skipn8r

Posted 25 February 2005 - 11:30 AM

#7

I'm not asking how to jet the bike!! I just want to know if the JD Jetting Kit works better than stock jetting on the 2005 CRF250R?


Thanks

The only thing I can add is that I've jetted my '05 CCC X according to the '05 R jetting chart and it seems pretty close to spot on.....

  • mimafia17

Posted 25 February 2005 - 01:49 PM

#8

What is a leak jet? Are you referring to the slow jet?

  • Terry_Blake

Posted 25 February 2005 - 04:07 PM

#9

Thanks everyone!!!

  • skipn8r

Posted 25 February 2005 - 04:20 PM

#10

What is a leak jet? Are you referring to the slow jet?

The leak jet is a small jet that "leaks" fuel from your accelerator pump (AP) circuit back into the fuel bowl. Changing it changes the length of your AP fuel squirt and strongly affects the performance of the engine when you whack the throttle open quickly. A larger leak jet leaks more fuel which shortens the AP fuel squirt, and vice versa. It's covered here.

  • mimafia17

Posted 26 February 2005 - 09:10 AM

#11

Thanks for the link! You can teach an old dog new tricks!

  • crfer67

Posted 06 April 2005 - 04:39 AM

#12

just installed a yosh comp and added a 175 main. I cuts out at top end and back fires on the deceleration.

  • MH229

Posted 06 April 2005 - 08:55 AM

#13

just installed a yosh comp and added a 175 main. I cuts out at top end and back fires on the deceleration.

if you have 2005 crf250r ??? go back to 172 main.. put in a 45 slow jet and run the bottom fuel screw obout 2 turns out...giddy up!!!!





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