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Adamsvh67

More jetting questions... '07 650L

10 posts in this topic

Hi all

Tried the search and found many recommendations but little about jet suggestions for higher elevations.

'07 650L, snorkel/smog removed, carb untouched. Other current mods are custom deep scratches on side cases/plastic.

Supertrapp IDS2, Uni filter, Dynojet kit to arrive monday. Getting pretty excited about it!

Sitting at 4600' elevation, and routinely ride up to 10,000'. Any starting point suggestions? Current jets are as installed from factory.

Appreciate any help guys.

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Less help avail. for the DJ kit vs. using the keihin jets- just a larger user base for the 1 vs. the other.

I'd just start with the larger jet in the kit, adjust the needle according to the directions, and start from there.

Dave

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Get the manual it will give you settings for high elevation riding. If Im not mistaken on the L you should have a selector for high elevation riding, I know they do reccomend different jetting for high altitude on all the 600/650 R/L models. I dont have the manual with me, but you can buy it pretty cheap and it will give you all the info you need.

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I don't think the DJ kit even comes with a pilot jet just to larger mains and uses the tappered neddle to pass more fuel? If your running at high elevations you don"t want to go with much larger jets than stock. 55/ 158 is as large as you problly want to go using keihn jets and the Daves mods whitch by the way have had better results than the DJ kit for the majority of us.

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Just got DJ kit today. You're right goblin, just 2 mains, no pilot. Not real thrilled for 60 bucks.

Thanks also foallength. Briefly looked in manual, didn't see muc. Must not have looked good enoug. I'll check again

Thanks guys. Prolly no time til next weekend, but I'll let ya'll know how it works

Adam

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Just got DJ kit today. You're right goblin, just 2 mains, no pilot. Not real thrilled for 60 bucks.

Thanks also foallength. Briefly looked in manual, didn't see muc. Must not have looked good enoug. I'll check again

Thanks guys. Prolly no time til next weekend, but I'll let ya'll know how it works

Adam

Adam here is what you do go to the nearest bike dealer honda or yamaha and order a 55 and a 158 keihn set of jets and then follow Daves mods you should be able to find the proper size washer to shim the needle up at a hobie store. This is all very simple to do. Only a couple more steps than if you were still going to use the BD kit. Actually use the spring and the smallest main from the kit and just buy your self a 55 pilot jet get your shim and you will be all set. I got by with the BD needle at first but I did finally go to daves mods at the end. Well untill I bought a new mikuni flat slide from XRs only.

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adamsvh67, i also have the same mods and stock carb with djet kit. i also live at 4500 ft. use the 160 main in the djet kit. i tried the 165 that came in the kit first, but it was way too rich. i also drilled the slide. i do use a e2 series pipe and stock header. the bike runs phenom. well.i have not changed the stock pilot either. no need.

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The DJ kit is not all that bad worked fine for me, I used the 160 main and their needle and spring, which means you do not have to drill the slide nor hunt for washers to place under the head of the needle that is done for you. The only bad thing is that you still need to install a bigger pilot (55). Remember to grind off the air fuel screw adjustment tab so you can adjust it out 2 1/4 turns from bottomed.

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Installed DJ kit this past weekend. Went with 52 pilot, 160 main, 2 1/2 turns out and 10 discs on supertrapp. Runs great. Much smoother, no mure lurching maintaining slow speeds. Still prolly a little tinkering to get just right, but seems a good starting spot. Hope to be able to have a long test ride this weekend thru the mountains. Let ya'll know how goes... Thanks for all the input

AV

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