HELP NEEDED WITH JETTING :) - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums
 
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post #1 of 7 (permalink) Old 02-12-2004, 11:38 PM Thread Starter
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HELLO, IM NEW HERE AND I NEED SOME HELP?I LIVE IN SOUTHERN CALIF. I HAVE ; NEW450 , JUST INSTALLED FMF TITANIUM POWERBOMB EXHAUST, K&N FILTER WITH SOCK/ TOOK LID OFF.
I PURCHASED THE GYTR JET KIT AND INSTALLED THE YZ450 NEEDLE IN THE #3 POSITION AS INSTRUCTED, I ALSO INSTALLED THE 45 PILOT JET AND THE 165 MAIN.. 2.5 TURNS ON THE AIRSCREW,
WHEN I ACCEL IT POPS, SPITS FIRE OUT THE MUFFLER AND THE EXHAUST GLOWS RED! :O IT IDLES A BIT HIGH, BUT THEN RPM'S DROP WHEN I PULL THE CHOKE.
MY GUESS IS I NEED TO LEAVE THE PILOT, LEAVE THE GYTR NEEDLE AT #3, BUT I NEED TO GO BIGGER ON THE MAIN JET??
THANKS IN ADVANCE FOR ANY HELP.
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post #2 of 7 (permalink) Old 02-12-2004, 11:46 PM
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Looks like you may need to up the Pilot and Main. I don't know, still stock, but check out these guys. They helped me.

---------------->>>>>>Daddog&#39;s<<<<<<---------------

AMF-YOYO
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post #3 of 7 (permalink) Old 02-13-2004, 01:19 AM Thread Starter
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HEY THERE OFF ROAD ACE, LOOKS LIKE WERE PRACTICALLY NEIGHBORS,, IM IN COSTA MESA / SANTA ANA AREA.

THANKX FOR THE INFO.. I HAVE ALLREADY GONE THROUGH THEIR WEBSITE,,, GOOD INFO. IM JUST DIGGING FOR MAYBE SOMEBODY WHO HAS THESE SAME MODS, AND WHAT JETS /NEEDLE THEY USED , TO CUT DOWN THE TRIAL/ERROR ATTEMPTS..
IM ALLREADY PISSING OFF THE NEIGBORS
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post #4 of 7 (permalink) Old 02-13-2004, 03:15 AM
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Go 4th clip on needle, leave pilot jet alone, 45p should be good( unless you have done the cam mod then go to a 48 p) The 165 m is too small go to a least 170 to 175m jet. The set up you have now is good for stock no mods..............I run a complete yoshi tri ovl exhaust, pro design foam filter w/ air box lid off, and cam mod done. Started w/ GYTR jet kit only finding myself going back to the shop for bigger jets.... My jettings are 172m, 48p, 5th clip on needle, and 2 1/4 turns on fuel/air mixture screw....Try it out and see how she feels...........My neighbors already called the cops on me for trial & error runs up and down the street......Dont care bike runs great now, well worth it.........check your sparkplug after each test run. Light tan/mocha color is spot on: White too lean: black too rich... :rock
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post #5 of 7 (permalink) Old 02-16-2004, 10:37 PM
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Quote:
Originally posted by CARLOS3621@Feb 12 2004, 10:19 PM
HEY THERE OFF ROAD ACE, LOOKS LIKE WERE PRACTICALLY NEIGHBORS,, IM IN COSTA MESA / SANTA ANA AREA.

THANKX FOR THE INFO..* I HAVE ALLREADY GONE THROUGH THEIR WEBSITE,,, GOOD INFO. IM JUST DIGGING FOR MAYBE SOMEBODY WHO HAS THESE SAME MODS, AND WHAT JETS /NEEDLE THEY USED , TO CUT DOWN THE TRIAL/ERROR* ATTEMPTS..*
IM ALLREADY PISSING OFF THE NEIGBORS*
HEY!!!
Glad to know you neighbor. :D

No. No problem here. Just wanted to pass on the info I&#39;ve used and found useful. I totally understand about getting help about the same mod setup.

Where do you ride?

I&#39;m at Gorman, Glamis and Dumont for the most part, and always looking for new areas to ride and new people to ride with.

AMF-YOYO
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post #6 of 7 (permalink) Old 02-17-2004, 08:48 PM Thread Starter
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WHATS UP OFFROADACE?
U SHOULD EMAIL ME NEXT TIME YOU GO RIDIN
I JUST RECENTLY GOT MY 450, AND HAVE ONLY GONE TO OCOTILLO WELLS, AND RASOR.. (UP NORTH ON THE 15)

MY EMAIL IS [email protected]
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post #7 of 7 (permalink) Old 02-17-2004, 09:14 PM
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Will Do Carlos3621.

Can&#39;t this w/e. Maybe in 2 weeks.

I&#39;ll see if PoolHustler and BidBadYFZ want to go too. They are fun to ride with too.

I&#39;ve got your email, mine is [email protected].

Talk to you soon.

AMF-YOYO
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