Re-jet witj Dr.D pipe on `08 450


8 replies to this topic
  • MC214

Posted March 25, 2008 - 05:01 PM

#1

Anybody had to rejet with a dr.d pipe on a 08 450?I`m at sea level.

  • rickallen124

Posted March 25, 2008 - 06:08 PM

#2

They recommend a 162 main jet, stock pilot and 2.5 turns out on the fuel screw. I'd try that.

  • erickdj

Posted March 25, 2008 - 09:41 PM

#3

They recommend a 162 main jet, stock pilot and 2.5 turns out on the fuel screw. I'd try that.


I'm at low altitude as the OP, but the jetting specs recommended by Dr.D are not even close to what I used for mine. I can't remember exactly which jets I ended up with, but it was not anything like stock or what Dr.D suggested. The bike would overheat, backfire, and ran like crap with either of those jetting specs. I'll see if I can remember what the specs were. Lots of factors besides altitude will affect jetting, so if I were you I'd get myself a handful of jets, smaller and bigger than stock and start playing with it. The topic has been brought up many times before, so search and you'll find some tips if not the exact answer.

  • motox100

Posted March 26, 2008 - 07:36 AM

#4

They recommend a 162 main jet, stock pilot and 2.5 turns out on the fuel screw. I'd try that.


I tried a number of different combos in my 07 with the Dubach exhaust. I ended up with 162 main, stock pilot and 2.5 - 3.0 turns on fuel screw...as recommended.

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  • racer 813

Posted March 26, 2008 - 08:04 AM

#5

I have the 08 and live around the Sacramento area. With the Dr. D stuff I put in a 48 pilot and a 165 main and run the fuel screw at about 1-1/4 out and it rips!! I have tried a few combos and this works the best for me!!

  • erickdj

Posted March 26, 2008 - 03:06 PM

#6

I have the 08 and live around the Sacramento area. With the Dr. D stuff I put in a 48 pilot and a 165 main and run the fuel screw at about 1-1/4 out and it rips!! I have tried a few combos and this works the best for me!!


I think that's pretty close to what I'm running.

  • srfdwg2

Posted March 26, 2008 - 05:14 PM

#7

Yeah,racer pretty much hit it on the button!!!!!!!!!!!!!!!!!!!!!!!!!!!!I have that setup on my pct-4 I am in florida

  • todds924

Posted March 26, 2008 - 07:46 PM

#8

I'm at low altitude as the OP, but the jetting specs recommended by Dr.D are not even close to what I used for mine. I can't remember exactly which jets I ended up with, but it was not anything like stock or what Dr.D suggested. The bike would overheat, backfire, and ran like crap with either of those jetting specs. I'll see if I can remember what the specs were. Lots of factors besides altitude will affect jetting, so if I were you I'd get myself a handful of jets, smaller and bigger than stock and start playing with it. The topic has been brought up many times before, so search and you'll find some tips if not the exact answer.


Did you do the jetting yourself? Or did somebody else?

  • erickdj

Posted March 27, 2008 - 07:58 AM

#9

Did you do the jetting yourself? Or did somebody else?


I did it myself, it's not that hard. It just takes some time and patience to sort things out.





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