carb mod - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

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post #1 of 19 Old 12-21-2013, 09:29 PM Thread Starter
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carb mod

hi folks I need some input has anyone out there done a mod on there carb like the stage 1 or 2 or soforth ive only installed a dg r exhaust starts good seems to rev nice but haven't tried it since we have a lot of snow I live in labradoe with the altitude of about 2000 above sea level if any one tried this or any other mod please let me know ,ive also heard about the 22 cent as well but cant seem to find the correct washers for the needle jet but I rather do a good and full proof mod .thanks
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post #2 of 19 Old 12-21-2013, 09:51 PM
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The better mod is the KLX needle kit from Eagle Mike. It provides an adjustable KLX needle and jets to tune the engine with. The KLX needle is tapered providing correct fuel metering throughout the throttle range. The factory KLR needle is stepped to provide lean fuel mixtures at part throttle to meet Government emission regs then provides a very rich mixture near wide open to prevent lean detonation at full throttle. Hardly conducive to proper engine function.
Here's the link:

http://www.eaglemike.com/KLX-jet-kit...?categoryId=-1

Poke around on the site. Lots of interesting stuff there.

Best Regards....justjeff

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post #3 of 19 Old 12-22-2013, 08:47 AM
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Excellent advice from Jeff!!!! Plus drill slider side hole to 7/64ths NO larger. And a UNI air filter.

Willys
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post #4 of 19 Old 12-22-2013, 09:52 AM
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Quote:
Originally Posted by willys View Post
Excellent advice from Jeff!!!! Plus drill slider side hole to 7/64ths NO larger. And a UNI air filter.

eagle mike suggests not drilling. I didn't drill, my buddy did. Both gen 1's, both uni, both klx kit, both exhaust cam advance. Butt gauge = no noticeable difference, however these mods really wake the bike up.

Good luck and another +1 on the klx kit.
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post #5 of 19 Old 12-22-2013, 10:14 AM
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Reading these replies, perhaps I'll have to start learning how to actually do mechanical stuff (I'm a mechanical imbecile) and get the KLX kit for Chaos.

Hmmmmm.........

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post #6 of 19 Old 12-22-2013, 11:00 AM
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Reading these replies, perhaps I'll have to start learning how to actually do mechanical stuff (I'm a mechanical imbecile) and get the KLX kit for Chaos.

Hmmmmm.........
Only FEAR and COMMONSENSE holding YA back!!
jj

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post #7 of 19 Old 12-22-2013, 11:30 AM
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Only FEAR and COMMONSENSE holding YA back!!
jj
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My son is a wrench turner in the Marines. While he's up here for leave, I'm going to see if he'd care to "babysit" his old man while I try to do the doo. It may be a little chilly in the garage, but I've got a heater that will help keep me from totally seizing up.

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post #8 of 19 Old 12-22-2013, 04:22 PM
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Originally Posted by morrissey_shawn View Post
hi folks I need some input has anyone out there done a mod on there carb like the stage 1 or 2 or soforth ive only installed a dg r exhaust starts good seems to rev nice but haven't tried it since we have a lot of snow I live in labradoe with the altitude of about 2000 above sea level if any one tried this or any other mod please let me know ,ive also heard about the 22 cent as well but cant seem to find the correct washers for the needle jet but I rather do a good and full proof mod .thanks
Your bike, M. S. !

My riding partner has 55,000 miles on his '08; performed the 22-cent mod early on, but restored the carb to stock condition soon after. He's satisfied with performance, and reports better fuel mileage with un-shimmed needle (he MAY have left the slide vacuum port enlarged).

Full disclosure; I have the 22-cent mod, one # 4 washer needle shim on my Generation 1, and I'm satisfied with the change (starts and runs fine; mileage in the high 40's, mpg wise).

Since you changed the exhaust, you may want to look at your main jet (lower exhaust restriction may want a larger-diameter main jet). Shimming your needle should do no harm, IMHO; one or two # 4 washers (I think they're between 0.025 and 0.035 inches thick; Google would confirm) shouldn't hurt anything, and the operation's not precision-sensitive, IMHO. Raising the needle merely fuel-enriches the mixture in mid-range operation.

Drilling the slide seeks to improve throttle response, by enhancing the vacuum port. If you don't like it, you can J-B Weld it back and re-drill.

Best wishes on any hop-up/modification you decide to execute; you're the only one to satisfy!
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post #9 of 19 Old 12-23-2013, 04:43 PM Thread Starter
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ok thanks I would go with that but I really like to get some good in put on other kits as well im sure someone out there tried something stage 1 or 2 my elevation is 1800 above sea level crazy thing is when you get these kits it comes with 3 or 4 neddle jets a bunch of mains and pilots I like to have a sure combo that I can put in and not have to take the carb off or change things a bunch of times so if someone out there got a good combo let me know
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post #10 of 19 Old 12-23-2013, 04:57 PM
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So, if you were to buy the KLX needle kit, it comes with 3 mains I think....I run most of the bikes here at roughly sea level with 145 main and the clip on the 3rd slot. Seeing as you are at 1800 I would try the 142 main and set the clip on the 2nd slot as Mikes recommends....also set your pilot jet screw to 2 turns out from gently seated. I personally would drill the slider to 7/64ths regardless of what anyone says.
Adjusting the carb is as simple as rotating it enough to get to either the top or the bottom. After undoing the choke fitting on the left side and loosening the boot screws it should turn easily and allow you to change the main and also adjust the clip to maybe the 3rd slot.....You should take the carb off for the initial installation etc, imho, just to make life easier for you.....You can do it without rmoving it but it will be easier to drill the plug for the pilot jet screw while it's off the bike.
OH yes don't forget the UNI airfilter.....to finish the set up.

It's your bike and your call....this is just my advice for what it's worth.

Willys
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