02 Honda XR650L Carb jetting

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Mikepreis
Posts: 5
Joined: May 25, 2017
Location: Long Beach
Rides: Honda Xr650l

02 Honda XR650L Carb jetting

Post by Mikepreis » Thu May 25, 2017 11:18 am

Hi All.

New to this forum.
Got a 02 Honda XR650L that I've completely rebuilt. Need help with the jetting though.
Put a uni airfilter on and made a custom header and muffler from cone engineering. Headers are about 1/4" bigger than stock.
I know stock jets are 152/50. Was thinking of 160/55. Or do I need to got bigger.

Any advice would be greatly appreciated

JoeRC51
Posts: 77
Joined: Jun 10, 2016

Re: 02 Honda XR650L Carb jetting

Post by JoeRC51 » Thu May 25, 2017 12:54 pm

55/158 or 160. Pull the snorkel from the top of the airbox too. Check out ''Dave's Mod'' in the Honda technical section here.

Mikepreis
Posts: 5
Joined: May 25, 2017
Location: Long Beach
Rides: Honda Xr650l

Re: 02 Honda XR650L Carb jetting

Post by Mikepreis » Thu May 25, 2017 6:23 pm

I got uni filter straight on carb.
I bought a bouncy of main/pilots jets.
It the "Dave Mod" really necessary?
The thought of start drilling in to the carb scares me a little.

JoeRC51
Posts: 77
Joined: Jun 10, 2016

Re: 02 Honda XR650L Carb jetting

Post by JoeRC51 » Thu May 25, 2017 7:00 pm

You're only enlarging 2 small holes in the bottom of the slide that are already there. A monkey could do it , it's that simple. You may end up bigger on the main jet with the open filter.

Mikepreis
Posts: 5
Joined: May 25, 2017
Location: Long Beach
Rides: Honda Xr650l

Re: 02 Honda XR650L Carb jetting

Post by Mikepreis » Thu May 25, 2017 7:56 pm

Thx.
Maybe I should do it.
Seems pretty popular thing to do on these bikes.

Thx

Mikepreis
Posts: 5
Joined: May 25, 2017
Location: Long Beach
Rides: Honda Xr650l

Re: 02 Honda XR650L Carb jetting

Post by Mikepreis » Mon May 29, 2017 6:28 pm

So I did the Daves Mod and 55/158 jetting and wow what a difference. Sooo much better.
Took it for spin after the total rebuild and can't get it into 4th or 5th gear.
Drove about 5-6 mikes when suddenly white smoke appeared.

Any ideas?

Mike.

JoeRC51
Posts: 77
Joined: Jun 10, 2016

Re: 02 Honda XR650L Carb jetting

Post by JoeRC51 » Tue May 30, 2017 4:19 pm

On the oil line to the head , loosen the bottom banjo bolt to check for oil flow with the motor running.

Mikepreis
Posts: 5
Joined: May 25, 2017
Location: Long Beach
Rides: Honda Xr650l

Re: 02 Honda XR650L Carb jetting

Post by Mikepreis » Tue May 30, 2017 7:03 pm

Definitely sounds like it's worth a try.
Thx

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