1st and 2nd gear wheelies?


50 replies to this topic
  • rdsrf

Posted December 13, 2007 - 05:48 PM

#1

I bought an 2004 XR650L at a good price (bargain) with about 2k miles on it, with a few mods and running like shit. In fact, it would only run on the choke for the fist 10 to 15 minutes and not very well after that. Going through it I discovered that it had no screens on the fuel petcock, carb was full of crap and the stock pilot jet plugged. I added a fuel filter, cleaned the carb and added a 55 pilot jet. Bike is equipped as follows: Full Big Gun exhaust (not sure which one) with sound diffuser in place, Dynojet jet kit with 165 main, needle in 3rd groove, 55 pilot, dynojet kit slide spring, slide not drilled, mixture 2 1/2 turns out, K&N air filter, de-smogged, de-snorkeled, 14/48 gearing, new o-ring 520 chain, stock tires, lowered seat foam, and forks lowered a bit in the triple clamps.
Now, I'm not complaining at all....I've got it running and it idles and runs great with best throttle response I've ever experienced from a thumper. But I've read some threads on here about owners with similar mods describing full on first and second gear wheelies, having a hard time keeping the front wheel on the ground etc. Not the case for me....maybe a few inches in first if I open the throttle quickly. Am I missing out on some power here? From the descriptions I've read I was expecting something like my old KX250 dirt bike that would wheelie in first, second, and third if it could find the traction. Any thoughts or ideas? Is my lowered seat foam and lowered forks affecting the center of gravity enough to prohibit wheelies? I'm 5'7" 160 lbs. Is the sound diffuser robbing me of some power? Drill the slide and add a bigger pilot jet?

  • Big Red Paul

Posted December 13, 2007 - 05:59 PM

#2

Haloha,
dude, there's no way that an L is gonna have the bottom end power of a KX250. I reckon you are gonna have to pull pretty hard on the handle bars to get that wheel up in the air.

Changing the gearing on the bike will help.

I saw a video a while back on You-know-where of some guys riding motards around in Hawaii, looked awesome. Think they were on Husqvarnas.

Congratulations on the new bike anyways.

  • Bibleman

Posted December 13, 2007 - 06:22 PM

#3

Let's not forget that guys tend to exaggerate about how well their bikes perform. Having said that, my XRL is set up similar to yours and I'm about your weight. If I crack the throttle wide open in first I get an immediate wheelie and if I don't lay off it will flip. Second gear I must give it a hand full of throttle and a good tug on the bars and I will have a nice long controllable wheelie. Third gear forget it.

  • rdsrf

Posted December 13, 2007 - 06:28 PM

#4

Yeah Paul, a lot of guys ride motards and dual sports out here.....The best bikes for this kind of environment in my opinion....my gixxer 1100 streetfighter was a bit too much bike for the island. I guess people do tend to exaggerate a bit about thier bikes. I'll keep riding and experimenting with the throttle application.

  • frankiewhipit

Posted December 13, 2007 - 06:43 PM

#5

I would think body positioning would have more to do with the wheelie then the seat foam or the forks slid up the trees.

  • tgstoken

Posted December 13, 2007 - 07:10 PM

#6

My '93 650l will roll on wheelie in 1st, almost too easily. In 2nd gear, I too have to help it with a tug up on the bars. In 3rd gear, if I can get enough traction, while standing, I can get the front tire up at about 35mph and keep it up. Got to tell you, a 35-40mph wheelie on this bike is SCARY!!:banghead: 4th gear is no way.

My mods so far: de-smog, uncork, k&n filter, stock carb with 60/160 jetting, Supertrapp race pipe, Acerbis 5.8 tank. No fancy cams or carbs.

  • rdsrf

Posted December 13, 2007 - 08:18 PM

#7

What kind of mods/gearing do you have on your bike?

  • Bibleman

Posted December 13, 2007 - 08:28 PM

#8

Typical Dave's mods but with 160 main jet and vented airbox, Uni filter, FMFQ2 slip on and stock gearing.:banghead:

  • Rman of 237

Posted December 13, 2007 - 09:31 PM

#9

My 650- removed smog crap, Dynojet kit, opened up airbox and a Pro Circuit T-4. You better believe it will do a 2nd gear wheelie.:banghead:

  • Motosprtman

Posted December 14, 2007 - 07:34 AM

#10

Let's not forget that guys tend to exaggerate about how well their bikes perform. Having said that, my XRL is set up similar to yours and I'm about your weight. If I crack the throttle wide open in first I get an immediate wheelie and if I don't lay off it will flip. Second gear I must give it a hand full of throttle and a good tug on the bars and I will have a nice long controllable wheelie. Third gear forget it.


I agree with Bibleman, I get the same results. Smog junk removed and it is uncorked with a DJ kit (spring and needle - non drilled slide and a DJ 160 main and a keihn 55 pilot, UNI air filter, 2 1/4 turns out, FMF Q2. I have been thinking of putting the DJ 165 main back in - but not that big of a difference and it runs just fine.

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  • rdsrf

Posted December 14, 2007 - 08:01 AM

#11

Hmmm...well, like I said earlier maybe my technique and throttle application need some adjustment instead of the carburator.....I don't know though, thinking back, even my old 1985 XL600 would flip in first gear if I wasn't carefull. All it had was a Supertrapp. The carbs (they had 2 back then for some reason) were bone stock!

  • Motosprtman

Posted December 14, 2007 - 08:04 AM

#12

XL600R was a different motor, twin carbs, more agressive cam profile and ignition mapping in the CDI (so I am told) = ezier wheelies....

  • rdsrf

Posted December 14, 2007 - 08:13 AM

#13

Ahh....That would explain some things....I should have kept that bike. I like the magic button but kick starting is not so bad. :banghead:

  • Frank ZX

Posted December 14, 2007 - 08:24 AM

#14

Hi,congrats on your new bike.What do you mean your needle is in the 3rd clip?Mine don't have a clip.Anyways,You can change your cam and with a good exhaust the front will stand up in second without tugging on the bars.Mine will.

  • XR650L_Dave

Posted December 14, 2007 - 08:39 AM

#15

Drilling the slide greatly improves the throttle response.

The response will still lack compared to a manual-slide carb, but it will be much better.


Dave

  • rdsrf

Posted December 14, 2007 - 09:00 AM

#16

It's in the 3rd groove of the Dynojet needle as the DJ instructions recomend. I should have said groove instead of clip.

  • rdsrf

Posted December 14, 2007 - 09:05 AM

#17

I'll try drilling the slide and see what happens.

  • martinfan30

Posted December 14, 2007 - 09:14 AM

#18

you will be happy. i did the djet kit when i had the cv carb still. plus i drilled the slide. throttle response was very good, but not like my FCR.

  • absynth01

Posted December 14, 2007 - 10:50 AM

#19

Here is a second gear wheelie. I'm fat at 270, but have the motor to push. 04XR650L, cam, xr's only carb, big gun, rod kit, air box, 10.5-1 piston, filter, more $hit. Runs with my 650R uncorked. They each have their fine points. My cam is on my sled now, so next spring I will try to kill that cam on my L!!
Posted Image

  • martinfan30

Posted December 14, 2007 - 11:04 AM

#20

thats cool! i want to get a cam like that.





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