I got a 38mm Lectron in Dec for my wr144/165. Kevin at Lectron still recommended the MS-3 rod that Kelly designed, but also suggested 3-1xl for the 165 and 2-3xl for my 300. I think the 2-3xl is a new design. He did say they're always improving where they can, so good to check with them every once in a while.
I went from the 3-1XL to the 3-2XL in my WR250 and it really woke up the low end/mid hit. Has a good clean idle as well. Tried the 3-2m and didnt like it.
The 3-2M is not working so well in my CR165 at low throttle openings. If I'm doing a long and technical climb using low throttle and lots of clutch the motor will always act lean and start to hunt. And if I richen the rod to where the bottom end is happy the mid/top are sputtering rich and my gas mileage suffers. Sounds like I need to try a 3-2xl
After a quick ride today on the fresh 165 I think mine is the opposite. After a couple of heat cycles I went 1/2 turn leaner on the rod, from @ 49 to 50mm, and it's still rich on the bottom. The PJ is 1 1/8 out and that may be a little rich, but it does clean out and run strong on top. Are you adjusting the Power Jet? Basic Lectron tuning is adjust rod to get start, idle and basically run well, then adjust the PJ to get the top right. Adjust the PJ 1/8 turn at a time, I wouldn't go leaner than 3/4 turn out. I'm @ 2000' elevation, about 60/40 WFO/low to mid, mixing 40:1 with Klotz Super Tech and 93 non-ethanol.
Different fuels etc I know but I ran both 165 & 300 at 1/2 turn out on PJ. No spooge, great mileage n ran strong up top but jus didn't feel at ease when ridn WFO. More sand riding now so put both back to 3/4 out. mileage suffered a little but worth the peace of mind. For rod I think from memory the 300 is at 50.5mm too with 3-2m rod. It will idle all day(dung, dung, dung) with coupla revs she's cleaned out n ready to rip. Doesn't load up anywhere near as bad as mikuni did! Still get 90-100km hard riding outta it I tried setting rod(ms3) on 165 for idle n actual length but seized it(oops). From memory it's at 48.5mm, seized full turn leaner at 49.5mm. I tried it once at 50/50.5mm n it revved it's ring off on start up. Went way back richer after that! For some reason it idles fine for 10-20 seconds wen warm then drops right down? Doesnt stall but won't idle like 300 does. I'm sure it could be crisper off the bottom but sometimes I think I expect too much from the little motor so jus leave it as is. Cleans out easy, zero bog(ala mikuni), no spooge n good mileage. I may try a 1/4-1/2 turn leaner one day What does a full turn on rod equate to in mm?
Don't adjust the rod to tune wide open throttle. Adjust the rod first until the bottom to middle is perfect then adjust the power-jet for a perfect wide open throttle. You can look in the throat of the carb and twist the throttle (engine not running) to see when the power-jet is in the air stream, usually about 3/4 throttle but length of nozzle can be changed to tune this as well.
Made some corrections to my previous posts...I'm easily confused The 165 has MS-3 rod and not sure how it compares to the others. Lectron Kevin said: ...MS-3 like Motosportz had for specs for the Husky 125 - 165cc kits. The one extra 3-1XL is for tuning the [165] and the 2-3XL is for your [300]. Also, rod measurements were a little off. Just went 1/4 turn lean from 49.5, had a black plug and lots of spooge dripping from the stinger joint. Now plug is turning a dark brown, but still too spoogy. And acts lean on the bottom/at idle, idle screw @ 3/4 to keep it running and hangs @ 1500rpm after ripping then stopping. Think I'll try the 3-1xl just to see.
Anyone try the 2-3xl yet? Last time I spoke to Kevin at Lectron he was trying to sell me on one for my WR250 but I was so close to perfection with the 3-2 I passed on it. Between the 3-1, the 3-2m and the 3-2 I had my tank off at least 20 times changing/adjusting rods i didnt want to throw another one into the mix. Its running the best it ever has with the 3-2xl im reluctant to start messing with it again
On the 125/165 don't have to remove the tank I'm about to do rings on the 300 and want to do some more Lectron tuning to help reduce spooge. I'll probably try the 2-3xl along the way. I did install the 3-1xl on the 165, but not seeing a big difference yet. Still need to do another round of tuning and sort the details.
My crude measurement is @ .5mm per full turn. I went 1/4 turn richer today to @ 50mm with 3-1xl and it's much better, no dripping spooge! plug is a little black, but that's ok for now. Other than a short stutter midway in the mid range, no complaints. It pulls from just off idle through the PV opening in 6th had a blast I did go leaner on the PJ too, @ 7/8 out now. Strange that going richer on the rod reduced spooge significantly. I guess higher fuel/air could increase combustion temps. Maybe the leaner PJ? or both. I'll ask Kevin how the MS-3 compares to the other rods too
Dave is sending me out a new rod now. Just removed a 36mm from my 2016 150sx the other day and went back to the PKW. The Lectron is smother and didn't smoke but I did not see it as a big deal. He says it should have it all over my PKW but the stock carb pulls harder and hits quicker, but smokes a little. I asked if its the same rod in the WR144 and it is so it may end up on the Husky. Let you know what the next rod is like as its in the mail now.
144 rod should be MS-3. 3-1xl seems much leaner on the bottom than MS-3. I've continued richer on the rod a couple of 1/4 turns and the bike continues to run stronger. After a chat with Walt I thought I might have had some detonation, but now I think it's loading up a little during extended lugging around. I also upped octane rating with some Torco from 93 to 97 and went to 50:1 from 40:1. All positive results so far, but thinking 3-1xl rod is a little too lean at idle and very bottom, thinking to go back to MS-3 or get a 3-2xl to try. It's all fine tuning, because the bike rips as long as I keep the revs up. Plug is a nice dark brown with a little black on the threads. So seems current tuning would be good on the track or A class XC, but a little rich for the single track and cross training.
To remove a Lectron on a 16 150 I remove the tank, seat, pipe and subframe. But only have to remove the tank and seat to move the rod.
I talked with David @ Lectron briefly last week when ordering a carb for my TE610. He said that the MS-3 rod is an early design that is very lean on the bottom. When I ordered the Lectron 38 (for the 177) from Motosportz it came with the 3-2M rod. On my WB177 I am running the 3-2M rod with excellent results. Takes about 3-5 kicks to start cold w/ choke on and once started only takes some quick revs to clear itself out. Technical stuff at the bottom of 3rd is easy with some clutching, & 4th will usually requires a downshift to 3rd. Averaging about 30-35mpg too. For reference I'm running 14/52 gearing w/ 100/100-18 tire, Legend ZX-2R @ 45:1 & 50/50 93 pump gas/110 leaded race fuel.
Thanks for that, I was still wondering about the MS-3 rod. I just sent an email asking how the M rods compare to the 3-1xl. Interesting comparison: my 165 starts 1 kick cold or hot, even when it was a worn out 144 it started 1 kick I'm cross training and expanding the single track/tech trails on my property and surrounding forest, happy with the 3-1xl but it's not perfect so still tuning. In the slow and tech it pulls 2nd well with just a little clutch feathering, can get into 3rd, and need 1st only when I flounder. I'm not sure about mileage yet, I have fast sections in between the slow trails, but at least 25mpg. I'm running 13:49 w/100/90-19, Klotz Techniplate @ 50:1 (was 40:1), 93 100% gas plus some Torco concentrate = @ 97 octane. I've always tuned to run the tallest gearing possible while still maintaining 2nd gear starts, only needing 1st for u-turns, donuts and f'ups. With the current setup getting into 6th is a serious thrill.
The paper work calls the rod a 2-3XL some are calling it a 3-2XL, we are talking about the same thing right.
I think 2-3xl is the new rod and recommended for wr300, 3-2xl has been around awhile and is richer on the bottom than a 3-1xl. I think 3-1xl may be too lean for me, but not getting enough seat time lately to be sure.
