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Baron Von Beard

What are you AZ guys running for jetting?

24 posts in this topic

I did search and read a lot, but I'm still not happy with the jetting of my 06. It just feels sluggish out of turns.

I'm at 168 main, 48 pilot stock needle on the 3rd clip, fuel screw at 1.75 turns out. What's it take to get this thing to clean up off the bottom? Any leaner on the pilot/fuel screw and the thing sounds like a popcorn maker, but it just feels rich the way it is. Does the stock needle suck on the 06 or what? Maybe I'm being too finicky, but what gives?

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I am at 165 main, 48 pilot, stock needle position and about 2 turns out pilot screw. Mine sounds like a popcorn maker when it's really hot and humid, otherwise it rips. I go to 170 main when its cooler. I just got used to the popping. :thumbsup:

Sorry, I know I am not an Arizonian, but its been 90+ degrees and 80+% humidity.

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Have you found an easy way to tinker with the carb yet.....it usually turns into a 2 hours job for me to take that little bastard completely out... :thumbsup:

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Pull the seat and tank (6 bolts), pull the upper motor mounts (5 bolts), loosen carb clamps (2 allens), pull hot start, turn carb and remove top (2 allens), remove MSR fuel screw, remove float bowl (4 allens). This will allow me to change every fuel jet in the carb, I don't normally mess with the air jets, and takes about 15 minutes. On the Honda you had to pull the tank and seat (8 bolts), loosen carb clamps (2 Phillips), remove carb top (2 allens), remove float bowl drain plug. This would allow me to change all the fuel jets and woudl normally take about 10 minutes.

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Doug Dubach has recommended an NFLR needle in the 4th spot. See how close the Honda needle is to that. The Yamaha pn for the NFLR is 5TA-14916-LR-00

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stock on jetting 48 pilot, try a 50 or 51 tooth rear sprocket. gearing will

probably make more bottom than you will get out of jetting.

or maybe a blue plastic kit will make it faster

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stock on jetting 48 pilot, try a 50 or 51 tooth rear sprocket. gearing will

probably make more bottom than you will get out of jetting.

or maybe a blue plastic kit will make it faster

What up Terrance!

I threw my stock 05 CRF450R needle in to see how it runs. We'll see. I will also be putting a 50 tooth rear sprocket on. I hate gearing bikes down, but this bike could use just a little more mechanical advantage IMO.

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FIGURED ME OUT QUICK. In my experience you will get more out of gearing

by reducing engine load than you can find with jetting changes. On the track you will never top out 5th gear.

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FIGURED ME OUT QUICK. In my experience you will get more out of gearing

by reducing engine load than you can find with jetting changes. On the track you will never top out 5th gear.

I just hate shortening up the power on any bike, but I don't think one tooth will do much to ruin the power. I'm doing some experimenting with the jetting to get it nice and clean without popping and then I'll throw on a 50 toother.

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'06 450....stock jetting...no pinging, 14T CS, 50T rear...Adjustable air screw gets tweaked if I ride above 2500'. Altitude here in Phx is about 1500' at Pima and Dynamite...runs like a raped ape from DC to Daylight...best scooter I've ever owned.........

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I tried a 48 on ours, and in combination with the Dr.D exhaust , it pulls harder out of the same corner in the same gear as before by making the engine work against a bigger gear. Another thing I like about it is that it spreads out the transmission a little more, too.

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This is offtopic but somehow made me laugh.

The ad banner at the bottom of the page is for popcorn machines and supplies. LOL.

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RB, have you had a chance to try the CRF needle?

I threw the needle from my 05 CRF in it and it wasn't good. The bike rips when you twist the throttle, but it was really choppy when you held the throttle steady. I had a 45 pilot and 165 main in and started at the 4th spot and it was cutting out, so I went down two clip spots to see if it wanted more fuel and it got much worse. So I went to the #2 spot and it cut out less but was popping under decel. I think if I go with a 48 pilot and 168 main with the needle it might work well, but I'm going to have to experiment. The needle looks liek a richer needle, but I don;t have the needle specs to compare so it's hard to tell.

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I threw the needle from my 05 CRF in it and it wasn't good. The bike rips when you twist the throttle, but it was really choppy when you held the throttle steady. I had a 45 pilot and 165 main in and started at the 4th spot and it was cutting out, so I went down two clip spots to see if it wanted more fuel and it got much worse. So I went to the #2 spot and it cut out less but was popping under decel. I think if I go with a 48 pilot and 168 main with the needle it might work well, but I'm going to have to experiment. The needle looks liek a richer needle, but I don;t have the needle specs to compare so it's hard to tell.

and the tinkering starts... :thumbsup:

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Keyboards don't count! :thumbsup:

I'm not talking about my keyboard... I got me a new scoooter.. :ride:

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