TTR 125 Carb Swap and Uncorking
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- Опубликовано: 4 сен 2024
- Today's video will cover the uncorking process for the TTR 125 L. Big thanks to all the folks at Thumpertalk who came up with AND contributed to this exercise.
Swapped carb with a VM24 out of a KTM 65sx. Questions? Leave a comment below and I'll try my best. Thanks! 
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your running rich on the low end.. you can hear it in the idle...once you get that sorted out.. now... mill the flywheell a hot cdi box proper fmf full pipe and if you really wanna squeeze some more hp out yank out the base gasket and rtv it.. you will raise the compression quite a bit.. your ttr will now eat a stock crf150
Someone please try all this and post the results!
@@PlushEnduro check out my channel... I've got all those mods on my ttr... Just uploaded one where you can really hear it work up hill.... Check it out..
@@PlushEnduro Im about to do it 5 years later lol
@@amfk8079 please!!!
I just replaced that puny little 20mm restrictive carb on my DRZ 125L with the Mikuni 26mm and I was shocked by the difference in power. I love it and would recommend that anyone with a 4-stroke 125 do this mod. Bike should be uncorked too of course. Enjoyed your video!
I appreciate this video being to the point and u not overexplaining with bullshit anecdotes.
Just picked one of these up for my daughter, it’s in the garage next to my Beta! Love it and will be swapping the carb as this one has an Amazon chinese carb on it and the previous guy said it was because the stock mikuni was nothing but problematic
Just got all my stuff to do this mod. Great in depth video too. I’m going to start working on it tonight.
howd it work out, thinking of doing this to mine now
That metal screen is not really restricting much flow and it’s more/less in there to block debris from getting past the air box into the carburetor.. if your air filter is old and disintegrating, bits of the foam could potentially get sucked into the carburetor and cause your throttle to hang up which could be dangerous and could also get past the carb and into the motor. So It’s more of a safety thing. Not a lot of people take that into consideration and just say fuckit and chuck it. I personally would keep it in there because it also will keep rodents and BS from being able to get past the air box too. I’ve had a snowmobile throttle stick nearly wide open because it sucked an Acorn into one of the carburetors and hung the slide up but luckily I was able to realize it was happening and hit the kill switch and shut it down. After inspecting I noticed that there was a bunch of crap in the air box from critters while the sled was being stored for the off season. Anyways, good video. We just picked up two of the small tire versions of the ttr125 and I have been considering doing the carburetor modification to it and I appreciate you elaborating and showing the drilling of the cap. That was the one thing that I was unsure about when people said “you got to drill out the cap” i didn’t know what they were talking about so thank you. 🙏
Actually that metal screen is a back-fire screen, intended to prevent the air filter from catching fire if the engine should back-fire. It can be accessed from the left side of the bike by removing the left side panel rather than pinching and bending it out.
I have a 2009 ttr125 which has a COMPLETELY different carb setup. The throttle slide isn't connected to the cable, and the throttle itself uses 2 cables. I can't find a single video online of anyone changing that carb setup.
09 and up are big wheel only so I bet they changed that up as well
ya newer ones have the two cable setup
Same here man I have a 2008 one and it’s set up just like that
Great work man!
🙏
i kept the sceen an add screen to the top of the box to keep stuff out after i opened it up.
literally just adjust the float in the stock carb
In theory it would be more useful to know what size drillbit that is. Which is why I watched half your video. Thank you
Main jet =? , pilot jet = ? Thankss you!
Did this on my 2003 , and notice that on the carb the connection to the gas tank sits on top , and somehow the gas how to flow upwards? Any tips /tricks
Hey man, was looking for a temporary power upgrade that wouldn’t require drilling holes cause this bikes probably gonna be sold when I get a bit older and decide to finally put some money into a bigger bike, did the snorkel come off without cutting anything? (And also everything here was useful to me, I’m gonna open up the air box mildly by removing just the snorkel and the mesh behind the filter, also will do the exhaust mod)
Did you ever find out , or try it out
Did yz carb airbox BBR exhaust great.upgrade and fun to do as well.
Sweet!
Alsome video dude !!
Pierluc Beaulieu thanks!
Your video may help much more if you can provide ALL detail as:
- what carb (EXACTLY ...genuine MIKUNI, clone, source....etc)
- main jet,
- pilot jet,
- needle clip position
- float position (mm)
- needle number &
- needle jet,
- level above sea you are at
AND - last but not least - where to source the jets for the respective carb (as on clones often jets cannot be re-sourced for tuning...)
Yes buddy nailed it! U now have another sub To deal.
I’m tryna figure out where to put the black tubes
Badabing! What did you do? You put it together off camera.
I did almost the exact same thing before I saw your video....just got it done and not tried it yet...But between my petcock and carb the fuel will have to run uphill a bit...was this the case on yours..??????going to try to finish up this weekend and see if it will work..
I think I have it routed in such a way that enough gas still flows into the carb. I used some clear gas line so I could make sure this was the case. I’m still trying to sort out the jetting. It wants to cut out if I crack it between 1/2 and 3/4 throttle. It was working great at one point, might just have a dirty plug. I haven’t messed with it in a minute. It’s the wife’s bike and she’s not super excited about dirtbikes sadly.
My try-125 cuts out at the same position 1/2 throttle to 3/4 and it bogs,but if I crack it full it goes right on past the bog..what do you think my issue could be..I replaced spark plug and that wasn’t it..I’m thinking needle clip position could be the issue..if your not busy hopefully you can tell me what’s up..thanks
Cut the whole fucin baffle out on the weld point on the inside
Video update?
Did u end up getting it jetted in? What jets did You use
Plz leave a link for the carburetor that I need..I have one i cant find a carburetor for it
Genuine Real Mikuni 24mm Pre-Jetted Carburetor Carb Yamaha VM24-TTR125 by Niche Cycle Supply www.amazon.com/dp/B06XQ62V8B/ref=cm_sw_r_cp_api_i_R1o2EbKTS2C4N
Its cheaper from sucdo with absolutely no chance of being a counterfeit. Mine just came in. Can't wait to throw in me jets and ride!!
How much does a genuine mikuni VM-24 carburetor cost
What jetting did you use
Has anyone figured out how to get a better engagement zone on the clutch lever yet?
i have a 2021 ttr125le all you have to do is move the rubber guard on the clutch lever and there should be little gear lookin things all i did was play with them a little bit and i fixed mine right up
Just got into riding a couple of months ago and bought my daughter a 2005ttr125le. It has an FMF exhaust already on it. Choke plunger stuck and broke so considering doing these mods. I'm seeing the Mikuni vm24 listed anywhere from $28-$191. How can I be sure I'm not getting a knockoff? What kind of jetting would I use for riding in Southern California?
Sudco will sell you an authentic one and jetting that they recommend for your elevation. I had a tough time getting mine dialed in.
@@PlushEnduro So I'm seeing a few carbs:
VNM24-512 @$110
VM24s/spec set@$120
Ttr125 VM24 kit @$135
Ttr125 TM24 kit @$200
What is the difference in these and which would I want? So if there is someone selling one for under $100, probably not a real Mikuni?
@@briangoodyear6348 maybe not authentic at less than $100 new. It’s really hard to tell sometimes with these knockoffs. If you go through Sysco you’re safe I’d imagine. Now, as far as “which one is the right one”; I’m not sure. Probably depends on the year of your TTR. I’d give them a call and see what they recommend.
@@briangoodyear6348 I might reach out to them directly if you haven't already done so. I'm not sure of the differences between those. I went the Ebay route and had to figure out the jetting on my own.
What jets did you use, I've heard alot of others use 15 pilot and 105 main
Does this give it a power increase ?
Yes and a lot of power
Local Hypebeast how expensive is this ?
TrashMotoVlogs it’s free to change the baffle and drill holes in the air box but what I’ve done I’ve done a carb swap so it has even more power that costed $50
Local Hypebeast what carb did you buy
Amber Killian i think people run mikuni VM24 or a VM26
Can I just drill holes and remove snorkel and if I do will it be faster
Faster? Maybe. At 9000ft elevation, i was looking for just some throttle response. That thing was sluggish up here in the clouds.
@@PlushEnduro Going to do the same on my sons 2003 ttr125. Also bought a new carb for it and new jets. Can't wait to start working on these mods, GREAT video
@@DaveMoore99 My son just got the same bike 2003 TTL125LE
Updates???
2:44 WTTTTHHHH
What kinda ultrasonic cleaner is that?
That is a Harbor Freight classic. Works good though and definitely affordable.
What year is this bike
+logan miguez 2008 I think.
is a ttr 125 good for 16 year old 5.90feet teenager
I’d prolly go something full size at that height. Look at the heavy crf 230 maybe 🤔
It’s enough if your a complete beginner I’m 17 weight is 160 and I’m 6ft it was given to me from my parents a few years ago I use it as a play bike doesn’t pull like a 125 2 smoke thing
Edit: Accdently cut the throttle😬” 😂
You did? That sucks!
WHY NOT DRILL THE BAFFLE OUT ?
David Ballard because he probably wants to stay somewhat quiet.
drilling the baffle doesn't let more out it would still have to go thru the center hole only
Waaaay too rich. Reason: you put a carb that was designed for a two stroke on a 4 stroke. Two stroke uses a lot more fuel at every rpm than a four stroke. You’re going to need to do a lot of jetting.
Where is the fuel hookup?
Opposite side than the stocker. You’ll need some longer fuel line.
Thanks I accidentally hooked it to the wrong one that is a vent but it was over flowing so I put it on the big one on top and but I ran it under the seat till I find a better fix
@@PlushEnduro how did you route the fuel line?
Why Knot just cut most of the top of the airbox out ?
Should clean that dirty frame off while you got that shit tore off. & that stupid helmet hanger took mine off & grinded the welded nuts off
I was wondering the same thing..why not just square cut the box out,instead of drilling holes..I don’t know much about dirt bikes but was just wondering if there was a reason???thanks buddy
What size carb was on there before
Hey Peter, whatever the stock ttr carb is. Sorry I wish I knew more. I think it’s a 25 mm.
Yep I found a schematic. 25mm
How much more power does it have now
Tough to say, but it feels like a different bike. Though it never really ran that great when we picked it up last year. I think I got the new carb dialed in pretty good. I’d say if your already having carb issues, it’s totally worth pulling the trigger on the carb swap.
@@PlushEnduro I bought my gf a TTR125L and I ordered a VM24 kit pre jetted with the modified screw cap for the ttr cable. Glad to see these carbs make it run so well! Sounds like a strong running bike now.
Lollll
What Jets did you end up with?