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Where to get the XR650L 158 Jet?

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My shop can't even order it. What's that? I never heard of such a thing. Can I get a stock one and drill it out? Any thoughts?

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Your shop has issues.........they need a competent parts guy. If it is a Keihin jet, it should be able to be had @ any Honda dealer. You shoulda seen the deer-in-headlights look when I told the local parts guy that the Keihin 68 & 68s slow jets were different........it was priceless, especially when I showed him with a small drill bit the different size emulsion tube bleed holes.

Get part #'s, much easier than explaining something to the kid at the counter.

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http://www.carbparts.com/index.html#

Great guys who know what thay are doing,and fast shipping.

I strongly recommend you also get a 160 and 162.I ran the 160 with de-snorkel, uni filter, and Dave's mod 2 1/4 out and it was great.Added a power bomb and Q2 slip on and the 162 seems right on.

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Forgot to mention the website is a little tricky.Just call them and It's allot easier.

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talk about deer in the headlights look..........I went to the local Honda dealer several days ago to order a replacement foot peg. I had to walk over to a bike that was on the dealer floor and show the parts guy what I wanted. would have been faster if I shoved him out of the way and looked it up myself!

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We even went to Honda website for dealers and it skipped the whole 150 series. It started back up at 165. these guys are no teen agers. They went everywhere the could think of.

I will go back tomorrow and try the part numbers from the FAQ.

So whats the deal with the "s" on the slow jet. I know the little wholes are smaller. So what does that do? If they're both a 55 pilots, but one is an s, does that mean it's not quite a 54?

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I have heard of this retardedness before. All they had to do was go to the Keihin website and look up the part number. 👍

The 68 "S" postfix slow jets have smaller emulsion holes like sr71cbx said and therefore mix less air with the fuel. That makes the mix slightly richer than a regular 68 even though the center orifice is the same size. I don't know how much richer, though.

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the KTM 450 & 525 exc (2006 & ????) use the keihn FCR carb, and the same style jets, but the KTM bikes need different sized jets.

OT - martinfan - have you messed with your squirt time on your carb? I may be able to link you to an article that explains the mod ($20) & reasons this MAY be a good thing - they recommend going from a 3 second to 1 second squirt in order to increase throttle response & reduce bogging if that's an issue but I don't recall any probs mentioned by you. I'll post it just for fun in a while if I can find it.

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the KTM 450 & 525 exc (2006 & ????) use the keihn FCR carb, and the same style jets, but the KTM bikes need different sized jets.

OT - martinfan - have you messed with your squirt time on your carb? I may be able to link you to an article that explains the mod ($20) & reasons this MAY be a good thing - they recommend going from a 3 second to 1 second squirt in order to increase throttle response & reduce bogging if that's an issue but I don't recall any probs mentioned by you. I'll post it just for fun in a while if I can find it.

Please do so! I have always believed my leak jet is too small. Meaning less fuel leaking back to the bowl, and more fuel in the actual squirt.

Let us see that if you can find it.

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Please do so! I have always believed my leak jet is too small. Meaning less fuel leaking back to the bowl, and more fuel in the actual squirt.

Let us see that if you can find it.

Hey Rich,

It looks like it's not a good mod for a DS that sees a lot of street time. Here's how it works: Take the carb off & leave a little fuel in the line, twist the throttle & a stream of fuel squirts a few feet & continues for 3 seconds after you let go of the right grip. This can cause slight flooding. There's a few ways to do the mod - one is to change the diaphram in the accelerator pump, shim it with a model airplane spacer, bend the fork on the ?right? side of the carb... It depends on what model you have. The article recommended going with a 1 second squirt but said it could be harmful on a DS bike (might be too lean).

I searched KTM talk with no luck but my friend printed it out so I'll probably have to scan the article.

There were around 4 ways of doing the mod but it may be a bad idea. The only one I remember is called the BK mod & that's the one where you bend the fork to adjust squirt. His was 2.9 seconds on the 450 exc.

FWIW

https://thumpertalk.com/forum/showthread.php?t=485042

http://www.4strokes.com/tech/ktm/crockbkm.asp

https://thumpertalk.com/forum/showthread.php?t=624773

http://www.ledametrix.com/bkmod/

http://www.advrider.com/forums/showthread.php?t=137647

http://docta-zaius.freeservers.com/whats_new.html

It may be a bad idea or it may be great, either way it should be some interesting reading.

👍

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