WR450 f jetting - Needle adjustment


6 replies to this topic
  • eracer

Posted February 21, 2010 - 01:05 PM

#1

Hi,

I've been having some jetting problems con my wr450f, at first I had problems at top end, it seemed the bike couldn't go faster than 75 mph, it couldn't rev up.. Then I changed the jetting setup, the bike is ok at low and high rpm, but when I try to mantain mid rpm (going on steep hills for example) or just a steady rpm the bike starts bogging. I have only been able to change upper and lower jetting but I can't adjust the needle it seems to be "non adjustable". This is the stock needle, are they really non adjustable?

I wouldn't like to buy a JD Jetting for now.

I ride at 2300ft above sea level, dessert track, mostly dry weather. Any recommendations would be great!

Thanks!
Antonio

  • tacotory

Posted February 21, 2010 - 06:44 PM

#2

The stock needle is not adjustable. My recommendation is to bite the bullet and get the JD kit. I tried everything I could come up with to get my 450 to run right and could never get it. Bought JD's kit and PRESTO- the beast was unleashed! Good luck!

  • denny49

Posted February 22, 2010 - 04:21 PM

#3

I have an 05WR450 and bought an AIS removal kit. It came with jetting and an adjustible needle. It started good, lost the cold bloodedness, and ran great.

Dennis

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  • TLRam1

Posted February 22, 2010 - 09:53 PM

#4

The 04 has adjustable needle.

  • phynx

Posted February 22, 2010 - 10:59 PM

#5

The stock needle is not adjustable.

WR450F? I don't think your info is valid. I have had 02, 03, 04 and 05, all with adjustable needles.

  • 123BigcoopDawg576

Posted February 23, 2010 - 08:07 AM

#6

WR450F? I don't think your info is valid. I have had 02, 03, 04 and 05, all with adjustable needles.


Starting in 06 and onward, the WR needle was NOT adjustable :thumbsup:

  • phynx

Posted February 23, 2010 - 11:17 AM

#7

Starting in 06 and onward, the WR needle was NOT adjustable :thumbsup:


Okay, good to know.. I am working on getting a 09' next.




 
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