XTNG Initial Install Pt 3. What do I think?
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- Опубликовано: 5 окт 2024
- Third part of the X-Power Touch & Go Powers Systems Carburretor (XTNG) review on the GPX TSE 250R. Mixed feelings on the Bottom to mid range power compared with the stock carb and the idle speed needs fine adjusting from time to time. What I will say is there is a big jump in fuel efficiency making running costs cheaper on a ride to ride basis. I'm not done with the stock carb by any means so watch this space for a back to back comparison in the spring with it jetted correctly.
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36mm pwk i recon would have that singing spot on Rob
Yep all things to look at loads of ideas getting fired in my direction. Will see what happens. Happy new year bud.
You are finding all the short comings I had of the xtng. Only way I could get good lowend with it for acceleration is make it rich then under cruise conditions it will pipe bang and be blubbery. The hanging idle from my experience with metering rod carbs can be one of two things and it's weird actually in relation to a standard carb. A metering rod carb can hang high if it's to rich on top it burns the extra fuel like the choke is on if it goes up n down it as it settles it tends to be lean. Also from my experience that carb is to big actually the factory is to big if you go by bells formula and figure the carb size 28-30 is perfect for the power output and rpm range to give best throttle response. I would love to see you get it as good as you can and then swap the 2019 intakes and put a 28mm pwk on you will see what many of us have already figured out bigger isn't better but to many thing ohh we need that big carb no you don't James from jd jetting has proven that with a ktm 300 it only lost 8 HP on a dyno going from a 38mm to 28mm carb now that's a 55+ ho engine that really needs a big carb we are messing with a 223cc engine that might make 35-38hp.
Interesting stuff Bobby I had read about smaller carbs giving better performance. At some point I will look at this. In the meantime I'll just keep riding the wheels off the bike and see where we go. I've just had a friend message about skimming the head to raise compression a little too. I may look at that as well when I decide to do a top end job. Heads are cheap enough but my concern would be reducing reliability. Thanks for the input most appreciated bud.
@@RobboRobinson could you not removed some/fit thinner cylinder base gaskets instead?
@@ktm300tpiontour8 head gasket is already thin at .010" and the base gaskets tend to have a compressed thickness of .025" cometic will make a .012" so you can't get much there.
@@RobboRobinson if you can find a USA wr200 head it will bring the compression from 120 to about 150 with everything else left alone. I'm not sure if the dt200 or whatever they where called in the UK had the same head as the USA wr200. The wr has a much shallower chamber than the tse. I would not cut much more than .030-.040" off the head. I had mine cut .080 and the squish band recut in an attempt to get the compression into the 170-180psi range and it lost structure and would warp every ride just enough to loose seal. Then I went to the wr head. I'm currently not even using a base gasket just yamabond "I'm not recommending doing that but I've got 200+ miles on it like that so far" but it has the squish closed to .038" and 180 psi it does really good at that with the old non race cdi I don't know if the timing would be to agressive with the race cdi or not.
@@bobbyratliff3349 👍 sounds like u got it figured mate.
Another great video. Really enjoying following your experience with it. Mine arrives on the 5th, though not from GPX but your input will be very useful 👍
I've been waiting for your thoughts on this carb. I bought my TSE last summer and riding at 8500 ft. in Colo I knew I was gonna have to re-jet.
After 3 try's I got the bike to run quite well. Then I started reading about how these $300 carbs really improved the performance of these 230 cc bikes, I understand how the Xtng could handle elevation changes, but they're still just a fancy carb. So I'm looking forward to see what you can do with the stock carb, which in my opinion isn't all that bad.
Thanks for your video's on this bike, it's been great to hear a pro's thoughts on the GPX two stroke!
Ha ha thanks Dave I don't know who th pro is though ha ha. The carb is good other then I'm adjusting idle on and off. It revs out really well and the fuel economy has rocketed from before. Another guy who contacted is in the process of fitting a JD jetting kit to his so I'm waiting for his story to emerge. Its a long term bike so watch this space in the spring for further carb testing. Thanks for checking in bud.
@@RobboRobinson how did the jd jets go?
@@Crazyfornayeon not heard from him as yet. The XTNG is fully on point now though. Bottom end is a lot stronger and more responsive all round. See latest vid.
Hello sir, thank you for your very detailed evaluation,I want to give you some suggestions. I hope you can try it. You can adjust the ROD clockwise by three quarters of a circle, and you will find that the idling state will become very stable.At the same time, its torque in the low-speed zone will also be improved.
Thank you for that I will try it and get back to you. Hopefully it will be resolved and I can update 😬👍🏻
@@RobboRobinson did this fix it? im also having high idle
@@Crazyfornayeon Yes I turned the metre rod richer 50.2mm and all good. The only time I now have to adjust the mixture screw is when I ride at altitude above 1000ft . I generally ride now more than 500ft above seal level.
@@RobboRobinson i mostly ride between 2000-5000 ft , was wondering if i would try lowering it to 50.2 since i saw 2 people from the group use it and one person use 50.1
@@Crazyfornayeon yep do it 👍🏻
Sounds like it really opens up right past mid range and top end stock carb definitely was better in the bottom
Sweet 👌🏻 happy New year bud 🎉
Thank you my friend and happy new year to you too.
Is that bank there from a previous railway line now disused ? So handy to have your own field to practice, test and to keep fit.
Yeah bud old railway and handy to have as a test area no hassles with noise etc I can rip it round all day down there.
I too still have to tune the stock carb on mine. Too cold out right now -1 celsius I know you already know that the ZSC carb that comes on the TSE 250 R is a Mikuni TMX 38 clone. I'm trying a different route, and purchased a JD Jetting kit for a 2018 KTM 250 XC (they use a genuine Mikuni TMX 38). Everybody raves about the JD jetting kits. I know the TSE is 23cc's smaller, but we'll see how it goes.
Be really keen to know the outcome on that one my friend. Keep me posted. Happy new year.
@@RobboRobinson I finally took the TSE 250-R for a short spin. About a half hour. Really cold. Not enjoyable, however the bike ran great. It is without question jetted on the rich side. I also received the JD Jet kit today also. That will probably be a next week thing. Warmer and days off.
@@Joeak74 Awesome 🤩
@@RobboRobinson Hold tight. I'll get it done. I've done lots of jetting on Yamaha Banshees, Blasters, etc. I do my own porting, head re-chambering, etc.
I just purchased the kit to save time, and I don't have a base line to start with, because these bikes are pretty new. That carb will sing well when tuned properly. It is big for 225cc, but that larger carb will also breathe better in the upper rpms when your on the pipe. I plan to order a spare cylinder to port, along with a spare head to re-chamber, set squish distance, etc on.
@@Joeak74 sounds like you got some skills can’t wait bud 👍🏻
Another superb vid! It seems a shame that for a new bike you need to spend a further 600 bar for it :(
Most of it personal choice I spend 1200 plus on the TPi 🤷🏻♂️
Just for fun, ... have you try an old KEHIN or MIKUNI from previous years orange bike 250F?
And a Happy new year
Hi bud happy new year as well. No i've not tried as yet with other carbs but I think it could be on the cards.
Any ideas on what sort of MPG the tse250r or the tse300 would get on the open road?.......looking at getting one and road legalizing it for basically gravel road/adventure type use....and inconveniently there is sealed open roads between the fun roads.....
The 250 with the XTNG Gen 2 Carb gets around 12mile to a litre. With a std carb would be less. I’ve not really tested the range on the 300 with the Gen 3 Pro XTNG carb as yet. Racing wise it was pretty good 2.5hrs on a tank before refuel. Standard carb would be maybe 2hrs. The 250 does have a better road mannered engine but lacks the bottom end grunt the 300 has. The 250 is less engine service maintenance so like mine its was 185hrs before I changed a piston and it was still a size A I put back in. The 300 being high performance I’d say piston change at 80hrs.
Gravel roads / adventure stuff the 250 is great. That’s the type of winter riding I do on mine.
If you start doing the more technical type riding with long winding hill climbs switchbacks etc I’d use my 300 which on the plus side has hydraulic clutch.
@@RobboRobinson Thanks a heap.....you just bumped the 250 up to the top rank of my possibles list.
on a note about the new carb, could i ask what fuel you are using? E10 E5?
Gone onto E5 but I have it dialled good on E10 as well.
I have the 26mm smart carb and it provides good low end and mid range, I just wonder if that carb is too big? I also had to go through like 3 rods to get the wide open throttle right. It took a while to tune it.
All experimental at mo but its nice to know what people are using. I'll check your vids again to listen to yours closely. Hopefully have another GPX by March #300 as well for the tough stuff. Happy New year bud.
@@RobboRobinson some videos the bike is tuned while others it isn’t lol. Like I said it’s been a process. Happy new year!
good video!
how about for a husaberg te 300 2012?
38mm I think would work. Same as KTM engine. Email XTNG
hello sir do you recommend shaving off the seat or installing a lowering link? do i need to shorten my sidestand?
Robbo which XTNG carb kit was it you went for out of interest?
36mm EV bud just starting to take a look at comments in depth. Happy new year just seen your 2016 Romaniacs vid. I'm doing Bronze class this year.
@@RobboRobinson yeah, would love to go back and try it again but the last 2 years of hardly any events hasn't helped with bike fitness.
Have done the Hellas Rally a couple of times since with a 2nd place trophy in the rally lite class in 2019......riding none other than a 2 stroke 😂 (rode my XTrainer 300 as my PR7 wasn't delivered in time).
@@DerekWylie I think I'll be doing some rally stuff in the next 18 months. Got Romaniacs and Sea to Sky again this year then its 450 time. I start the build as soon as my old exc 250 has gone which is very soon.
Rob, this is a comparison video of the Electron /VS/ Smart Carb /VS/ JD Jetting kit. I think this may help you a bit.
ruclips.net/video/YGjfkU77aNM/видео.html
Thanks bud good watching that just goes to show.
Do you recommend this carb?
Thanks. Sasha
Yeah going good checkout my latest video from yesterday
ruclips.net/video/2Za7MemgJvc/видео.html