Anyone have a Canadian WR450? Hows the Jetting?
Posted April 12, 2003 - 08:51 PM
I notice it more on the street than I do off road and on a Track. Probably because off road I am over 1/3 throttle more often. This bike is Tall, but it is perfect for what I bought it for.
Street Plate, Baja Designs Kit, (not yet installed) Trail Tech w/Billet Mount, Pro Taper, E-Line Frame Guards, Fork Guards and Skid Plate, Cycra Hand Guards, YZ 450 Muffler W/Pro Moto Billet Spark Arrestor(not yet installed), Zip Ty Fuel Screw & Drain Plug.
Posted April 13, 2003 - 05:30 PM
Posted April 25, 2003 - 06:08 AM
Posted June 02, 2003 - 06:12 AM
it's either your needle taper start or the straight is too fat. the other thing is the APJ or a massive PJ.
Posted June 04, 2003 - 06:07 PM
Taffy, as of this moment the jetting is back to "stock" Canadian factory spec. My dealer mechanic went up & down with jets and needle position. Went back to stock because we saw no improvement. He was thinking maybe electrical? The plan now is to run bike with new "Q" pipe and work some more on it if there is no improvement. I know this is a blah blah blah! but I really do not remember the exact sizes & position for you.
Posted June 05, 2003 - 04:36 AM
Do you have the old type end cap that is rounded or the new one that looks similar to the T-4 end cap? I emailed FMF for clarification but haven't heard back yet. There website still shows the rounded end cap but says the Q is "new".
Posted June 05, 2003 - 07:36 AM
Posted June 10, 2003 - 02:33 PM
Posted June 11, 2003 - 01:35 PM
I'm no expert, just thinking out loud.
Posted June 11, 2003 - 06:53 PM
Posted June 12, 2003 - 12:37 PM
Again, just thinking out loud. I was thinkig of trying a richer needle at one point, because I figured the U.S. models were jetted lean to accomodate all the EPA garbage. But the bike seems to run pretty good. I haven't taken a plug reading lately, however, since it's such a pain to get out. I guess what I'm trying to say is, I'm just guessing. All I know for sure is, this thing ROCKS! Good luck.
My current jetting is:
DUT needle-4th (stock)
Installed Power Now and 48pj is definately rich now.
Zip-Ty fuel screw(I play with it constantly, so I don' know where it's set at)
Posted June 12, 2003 - 12:48 PM
Posted June 13, 2003 - 07:37 AM
Posted June 15, 2003 - 04:51 AM
I have a 2003 Canadian WR450. I fixed the 1/3 throttle hesitation and backfiring on deacceleration by changing the needle to the stock USA YZ450 needle at the 4th clip position from the top.
Posted June 15, 2003 - 05:45 AM
Posted June 16, 2003 - 02:43 PM
I have a modified stock pipe with the supertrapp system. 6 discs and below the 96db limit. It's also USFS approved. Altitude is 9,100 feet. 155 main, 40 pilot, 2 3/4 turns on the air screw, stock 2003 YZF needle at 4th position. Gray wire newly reattached (I've been doing tight hare scrambles and need the nuance of retarded timing at low RPM). Also accelerator pump screw removed (I need to start a new thread on this; it eliminates any hesitation). Also try octane booster if you can't get 96 octane gas.