digger's Forum Activity

Reply to KTM/HUS 125/150/250 jetting thread 11/24/2020 6:14 AM

That bike, I believe came from the factory with an S-7 needle jet. If it's still in there, you more than likely won't be able to clean up the overly rich lowend with a pilot jet or slide. Like mentioned above, I would also take a look at the jet block ... more »

Reply to KTM/HUS 125/150/250 jetting thread 11/24/2020 6:08 AM

A 5.5 slide, IMO, is going to be a little lean to be used in the small bore 125/150 bikes. If you don't want to cut your oem slide, I believe this is the Suzuki oem part# for their #5 slide. https://www.partzilla.com/product/suzuki/13551-36F50?ref=6aabbb394040407bdd3295eb777ccbc40aa217c3 ... more »

Reply to CR 250 rear master cylindert 10/15/2020 8:44 PM

Any CRF rear master cylinder from 02-20 will work/ bolt onto your frame. The only difference that I have seen, is the piece that connects the master cylinder to the brake pedal, which can be easily changed out. The master cylinders themselves are all ... more »

Reply to KTM/HUS 125/150/250 jetting thread 10/15/2020 1:10 PM

Yes, especially with the notched front side of the slide. I ran a 22.5 In a 300 XC in high DA air. This is for an XC or XC-w 300. I haven’t tested with a converted 250 sx to 300, yet.

Reply to KTM/HUS 125/150/250 jetting thread 10/14/2020 9:04 PM

If you go to page 5 and look at the slide I have posted, I took the picture before I finished/ smoothed it, so that you /anyone could see where I cut and blended. I use a black magic marker, a digital caliper, Dremel/die grinder and a small sanding drum. ... more »

Reply to KTM/HUS 125/150/250 jetting thread 10/14/2020 8:49 PM

I think you're pretty close jetting wise, but trying to over compensate on the lean side of things to try and correct the rich slide. Once you cut the slide to a 5.5, I don't think you'll need to run the clip in #1, probably #2 or 3 for this time of ... more »

Reply to Issues with PWK on KX125 9/11/2020 8:57 AM

it sounds like you're into the pilot circuit and or needle starting diameter and possibly the clip height. The first thing I would do is richen up the pilot to 48 or 50. The air screw may also need to be turned in as well.

Reply to Issues with PWK on KX125 9/10/2020 3:02 PM

We need to know in what part of the throttle range (0--25% 25%--75%, 60%--100%) the bog is happening in, so that we can help identify which part of the carb needs to be adjusted, pilot, needle, main....

Reply to KTM/HUS 125/150/250 jetting thread 9/10/2020 12:35 PM

I've never been a fan of running AV fuel over specific non o2 race fuel. I've always found that the AV fuel burns dirtier than pump or race fuel in a 2t bike, unless using a low flash point 2t oil. Don't get me wrong, it works well enough but, it's dirty. ... more »

Reply to Issues with PWK on KX125 9/2/2020 3:01 PM

I meant the short body PWK. The internal jetting is easy enough to change.

Reply to Issues with PWK on KX125 9/2/2020 11:33 AM

That the correct carb for your bike. JD sells a kit for small bore bikes,125/150 and one for 250/300 bikes. The kit for the larger cc bikes will not work in your 125.

Reply to Issues with PWK on KX125 9/2/2020 11:25 AM

Did you try the needle and specs that I suggested, CCL needle, 48 pilot and 178 main ? They should work with the 6.5 slide best. What JD jetting kit did you get for your bike ? The small bore JD kit should have needles that have scribe lines under the ... more »

Reply to KTM/HUS 125/150/250 jetting thread 8/31/2020 11:32 AM

Think of the notch as an enhancement to the pilot jet circuit and air screw. The notch typically effects under the needles 30%--75% range. There may be a little crossover, but it's not much. The small diameter needle works OK, but it will run a little ... more »

Reply to KTM/HUS 125/150/250 jetting thread 8/31/2020 4:34 AM

Great to hear feed back. By creating or opening up the notch on the front side of the slide , it causes the pilot circuit to function a little more efficiently, which in turn makes the first 30% or so of the throttle range a little richer. This is where ... more »

Reply to KTM/HUS 125/150/250 jetting thread 8/19/2020 11:08 PM

With those temps and elevation, you're probably looking at a correction factor of .93 or so. With that said, I don't have much experience with jetting for elevation. A .93 factor would put you at Needle, 42-74 in clip #2, Pilot at 32.5 with the air screw ... more »

Reply to Jetting help for 2007 KX250 8/18/2020 6:39 AM

I see what he is trying to do there, but That is Still going to be one hard hitting engine into mid with that series needle. There is no getting around it, and still have the bike running cleanly off the bottom. I’m taking into account that the majority ... more »

Reply to KTM/HUS 125/150/250 jetting thread 8/13/2020 8:11 PM

He could certainly try backing the air screw out as well, but It sounds like he's into an off idle bog situation , which is typical of a needle that has a starting diameter or 1st taper that is too lean. If it was rich, I would expect more of a stutter ... more »

Reply to KTM/HUS 125/150/250 jetting thread 8/13/2020 7:45 PM

Try turning in the air screw, and if it doesn't get better, move the clip to the 4th position. if still not better try using a richer pilot. Do you have access to a dial/digital caliper and a round file ? Look at the slide above that I cut. That all ... more »

Reply to KTM/HUS 125/150/250 jetting thread 8/13/2020 7:13 PM

What clip position is the needle in now ? Change the clip position to a richer setting. Turn the air screw in and or change the pilot( richer/larger). Notch the front side of the slide like the above pic. The jet block gasket really need to be replaced ... more »

Reply to KTM/HUS 125/150/250 jetting thread 8/13/2020 5:34 PM

The 42-75 needle is to lean for your 125. You should be using a 42-74, which is one size richer on the starting diameter. I also recommend that you open up the front side notch on the slide. It seems to be more beneficial on the 125/150's. Have you replaced ... more »