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GY6 [EVERYTHING YOU NEED TO KNOW] decode your engine!
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- Опубліковано 15 січ 2020
- FOR PARTS:
www.rollingwrenchdenver.com
Belt video:
What size scooter belt do I need • What size scooter belt...
If you are confused what engine you have in your machine, this video should help.
QMB139 = 50cc air cooled 39mm piston (made in China) 52mm is the max big bore kit size
QMI152 = 125cc air cooled 52mm piston (made in China with 54MM stud spacing or made in Taiwan 57mm stud spacing) 64mm max case bore size (A motor) 70mm max case bore size (B motor)
QMJ157 = 150cc air cooled 57mm piston size (made in China with 54MM stud spacing or made in Taiwan 57mm stud spacing) 64mm max case bore size (A motor) 70mm max case bore size (B motor)
![GY6 ENGINE BUILD [Everything you need to know]](http://i.ytimg.com/vi/wC5tYKqq0-0/mqdefault.jpg)
I came to see if you would "decode" how to determine short and long case and I love that it's the first thing you talk about and make it super easy to understand. Everyone else speaks jibberish. Now I can order a new engine with peace of mind. Thanks, brother.
Thanks for sending me this video " Rolling Wrench" now I can rest easy when ordering parts from you, THANKS AGAIN!!!
I have the 50cc QMB
Glad to help
Thanks you! Amazon just sent me the wrong motor. Thanks to you I didn’t get into my motor replacement and find out. Your the man!
Yo I’m wondering if you can help me I live in the UK and have a Neco Abruzzi 65 125cc with a GY6 engine its slow as shit. It does 55 mph i need to make that go at least 70mph is it even possible to tune that engine its a gy6 4stoke efi 125cc. Thanks
I was doing 20 miles an hour in reverse in my Scoot Coupe down hill when I did a double summersault combination half pike into a quad rolling back flip when I hit the subscribe button before successfully landing on all 3's !!.........
ebike mechanic here.
expanding business.
repairing Chinese scooters now.
ur channel is in my rotation of video resources when i need help.
thanks + new subscriber.
/Bklyn👑
I'm so glad I just came back to this video I just picked up a engine today for 100bucks. I completely forgot about the stud spacing and almost just spent some money on stuff that may not fit.
Yooo Homie, you are amazing with this stuff Dude!!! I really wanna learn more about my bike... I hate to sound stupid, but my bike is the 250cc Venom X22 GT and I wanna know my options to upgrading. Not sure how to contact you, but if you can, please contact me! 🙏
Hey bro!! I bought my ruckus from a guy on Facebook and I’m the pics the bike was sweet!! But when I got there his hands were covered in grease and a lot of the parts in the pic weren’t there! But for the price I was paying I got a beautiful 171cc big bore gy6 150 cc bike which I am a little leery about because upon watching your video I put it on pause and went outside and the number your talking about was grinded off the bike!! So I called my buddy and told him to come by tomorrow so we can rip this bike apart and check it! So now because I know the stud spacing I will know exactly what I’m looking at!! Thank you brother!! Great videos love your energy!!
Can you do a video on what hoses to hook up and which ones don't. Mainly talking about emissions and what not.
I'm glad to know the basics. Thank you.
One search, “how to know if I have a GY6?” And BAM!?!
SOOOOO much info packed into a 5min video!!
I JUST picked up a Chinese Back/half, I knew little to nothing... just knew I wanted faster! (Who doesn’t?! lol)
I’m a Fabricator/Creator/builder, so making the 139QMB fit on an old school Spree frame is going to be a snap, but for what little I have invested ($150 for a turnkey Spree-learned it needs a stator I can’t get new, and the gamble on a used one for $100 just not worth it when 4/st parts are SO cheap! Plus the running/complete GY6 QMB back/half) I’m that guy that has to squeeze unrealistic numbers from a seemingly “timid” looking 80’s Honda Spree....
In short, I can’t Thank you enough for answering every question I had and saving me hours of searching!!
Sweet! That spree is gonna be a fun project ! Thanks for the support 💯🙏🏻
Of Course!!
Some super valuable info right there!
I mean, you didn’t make your wife cry, crash your car from being an idiot, post a video of someone falling down, or even attempt to dive into a completely frozen swimming pool, so, good on you! lol
I am a little stuck when it comes to a big bore kit though.... I see there are several kits to pick from, and I’ve only been able to find one that’ll take me straight to the Max @ 52mm, however, I see most of these kits come with a disassembled head, but not sure if they come with the bigger valves and just aren’t showing it....
SO, Could I get your recommendation(s) on the BBK, cam, carb, Variator kit, valves, etc?
Even if the parts are from several different sellers, I’m fine with that too, there’s just so many to pick from, I’d hate to buy parts I don’t need or don’t work together if I can help it....
Like I mentioned, I’m a builder, so putting it together and understanding what a “+/-“ tolerance is, no sweat.... I’m just looking for the biggest bang for the buck....
I’d really appreciate any guidance you’d be willing to offer!
Thanks for the great info! not just this , but all your vids. Sooo happy I found your channel.
I have learned so much about mopeds and now that I know so much I work on my moped myself and I just replaced my clutch today
I have been wanting to build myself a fun get around custom project for a while now. My 50cc 2 stroke skateboard is fun but not practical for distance.Now i have a gy6 50cc ugly funky scooter and im going to rip it apart and use the power plant (motor & CVT transmission) and front disc brake set up and modify a beach cruiser bicycle to fit the GY^ engine with all the goodies like water cooled 100cc big bore kit, stroker counterweighted crank, ported and polished cyl. head, turbo kit lower gearing and add all this to 26 inch heavy duty spoked bicycle wheels for an over all top speed around 70 mph! I will be fit to really get around easily during 5pm traffic jams!
What if you have a 150cc but the engine stamped it as a qmb139 for registration purposes from factory 😂. I guess pull the head and measure studs is my only option?
Any performance parts for this engine?? "1P63QML"
Your the best man .. I just got a scooter 50.cc. I like how you exsplane the hole thing .thks
I have a 157QMJ that i cannot seem to get a cylinder that fits properly. They will go on the studs but the two extra holes that are outside the timing chain housing are the incorrect pattern! What am I doing wrong? Please help! This cute little family project is growing to be just painful!!
HELP!!
This is what I'm looking for. Very thankful 😊
Thank you. Nice,clear explanation regarding long/short case and A/B stud spacing. What I can't find info on is the difference between engines that have the swing arm lugs on the bottom of the cases (single shock applications?) and engines that have the swing arm lugs on the top of the crankcases (twin shock applications?). I have a SYM Orbit 125 which pivots at bottom (and only has a single shock) and a SYM VS150 that pivots at the top (and has twin shocks). The end of the cases where the shocks mount are also different. What gives?
Great Video. My 50cc Scooter had a 137QMB 12" Engine. The valve cover has two caps for valve adjustment.
139QMB
Thank you! I have always wanted to know for sure what my engine size was on my Chinese scooter! You are so clear and the visuals are a blessing! Now to try and find out what kind of belt I need...
PLEASE EVERYONE I KNOW WISHES YOU WOULD DO A VIDEO ON WHERE TO GET GY6 PARTS PLEASE.!
He has a website in description
@@DoodMangSpeaks but no parts really for 50cc engine
How bout a QML? Looking for a big bore kit.....can't find much on it.
THANKYOU GOD FOR THIS MAN I NEEDED THIS IMFORMATION about to order a big bore kit for my wife's 150cc quad and it has a gy6 but I couldn't figure out if it was a A or B
I appreciate you. I would love to send you one of our kits :-)
Mine says xs1p37qma-2 on a lance pch 50 cnt get it to run no spark replaced the entire electrical system and nothing
That is very cool info and I feel still dumbfound because there is nothing about if can a 50cc be replaced with a 150cc or 232 or what not? What is the difference? Show us that too so knowing what can do and not to do. Thanks keep up awesome videos!
Hey i know this video been up for some time i have the 161QMK 168cc engine, 13” wheels i wanted to know what size belts does it take is it 835/20/30 ?
Man, I really appreciate your videos. Kinda wish I had you as one of my teachers when I was a kid. Only trouble is you weren't born yet. Christ, neither were your parents. Oh well, better late than never. I am building the fastest motorscooter in the state and can't get enough of that little thumper. Thanks again.
Lol awesome!!!
I have GY6 with KMZ157QMJ and 124cm3 on the block. The 124cm3 is part of the casting and the other is stamped into the case. FYI
Thank You So Much Just Found Out My 2005 Schwinn Laguna Has A QMB 50cc First Time To Even Know This
I have a sym shark and thought I had a gy6 125cc but it doesn't have the QMJ it starts with WVM, I want to swap out that engine for a gy6 but don't know if it will fit how can I tell if it will fit or not? HELP
Guys anyone know does the gy6 125-150cc clutch fit a gilera runner 125 2stroke please
Thanks for the information help a lot. Now I need help with what is the biggest big bore kit I can use on my 161QMK- B2? I think I got the short case 170cc engine with piston size 61mm. So what size piston I need to get to 232cc and what else I need to do to it? Thanks in advance
You have the info bro?
How do you decode a gy6 that's not like qmj or others because my 150cc adventure does not have any of the letters or numbers that you have used in your decoding breakdown
1p63qmL. 1 piston 62.5 mm piston 2 valve head. With reverse. I guess its short case also reffered to as a 200cc but i think the actuall number is less . I foumd this motor on a gkm200 buggy
Thanks for decoding those numbers and letter
I have 150 cc engine with a GY6 external reverse gear that broke. I’d like to know how to replace it and how do I make sure I get the right part thank you.
I used to ride big sport bikes..got hit by a truck and almost died..had my leg tore off..I'm healed up and jst got a Chinese stt dongfang 50cc.so I'm trying to learn about the motor. Ifuknow anything g about my kinda offbrand from style scooter I'd realy apriciate the info..great channel by the way..I'm gna sub right now
Hey hope you see this I bought a 2014 Kymco agility 125 claims to be 125 ccs and I just tried to decode the engine and all it says is km25 and a load of numbers??? Also from vids I’ve seen I’m 100% is a gy6 engine
Mine says XS1P52QMI-3B and I'm having a hard time finding final drives and other parts that actually fit. It's supposed to be a Sym Fiddle 125, but the 125cc parts don't fit at all.
What is the difference between 157qmj and 161qmk lower sump? I'm not talking about pistons and stuff. Crank and variator etc. I'm talking about the location.
Yeah I've got a qmb139 gy6 on 13inch wheels. Motorcycle x18 venom
So I just bought 2 used and extremely abused off road go karts.
The wiring is all butchered.
Where is the best place to get complete wiring harness.
I'd also like to replace the carburetor
They're GY6 engine..A or B I have no clue. But will that matter for wiring
I got kymco agility 125cc 2016 it says on engine KN25 what does it means?but on cvt cover says gy6 confused
I have the 139 qmb 50cc i need a new valve head as my where my exhaust bolts is just carnage dont no what size the piston is ok just dont want to order the wrong one
Ok, a few things match here. I have a XS1P37QMA-2A. It's a SYM/Peugeot engine. its OK on the bore size, 37mm, but acording to most common knolege the MA size doesnt even show on charts, but has 50cc displacement due to its 47mm stroke. If it is a 50cc it should be an MB, so there are things to consider wend buying a big bore like the height of the cilinder.
Also this engine is an "hammer head" instead of the comon ones with a full cover, so how compatible is it with upfrade kits?
QMK is the SYM 169 cc version
Just watched your video, great information, but I need to know about this: "161QMK", its new and I don't want to remove any components till the warranty is up. It is on a trike - DF200TKA.
I have a 2015 150cc super hornet. What's the engine size on that is it a or b and is it short or long
Feel free to spill out knowledge anytime. I had my notebook out on this one, thanks!
yn173mm ⭐ followed by more numbers which I think is my bike serial number which is more than likely irrelevant followed by another ⭐
I have a Short Case because I have 10 inch wheels but it's a P model. You didn't talk about the P models but I think you should have because the P models have more performance than the stock non P models. This is Great if you compare stock to stock But the Non P models can handle a larger big bore kit. Here is what NYC says about them: "If you have a letter “P” after example “1P”, stands for (P)air valve horizontal engine. The P series engine has a taller cylinder head and a shallow recess cam seating that gives it slightly more performance than non-P GY6’s engine code. However, if both cylinder and cylinder head is swap out it will be identical to the non-P GY6 139QMB engine. So, parts are interchangeable as long as both are replaced cylinder and cylinder head from 1P and non-P. But why? Because their so many upgrades available for non-P type engines include performance camshaft, etc." - So I Won't be able to install a larger Camshaft BUT there are still Plenty of other mods I could do!
Who's NYC please
@@danysanjab2539 It's the name of the people that makes or sells parts for Gy6 based scooters.
i want to upgrade my gy6 150cc engine to water cooled can you send me some tips and information about what parts im going to buy
.thank you sir
hello, i just wann ask, how far i can bore up my Longjia VMAX 175, a gy6 engine from China. i want to make it a 200 plus cc engine. what bore, head, and block sizes do i need to consider changing? and what coulde be the best performance upgrade i need for the trnasmission? thanks.
What is and where does the hose from the cap of the engine go to? No one can answer that.
Hey man I have a 2012 blade utv for my daughter's. Lz150-1 model . The engine won't start and I tried every known attempt to get it running. Now I'm thinking I have to rebuild it. Pulled it from the kart and now it's on the floor. Question . Looks like I can buy a gy6 engine for $300 online but it doesn't come with the 90 degree gearbox that houses the sprocket. Can I buy the engine and just swap my gearbox on it?
i really enjoy watching your channel, since i started watching u have inspired me to buy my first QMB139. i would love the oppurtunity to build a racing engine on my Wolf RX 50cc and can i put a gy6 150cc on this scooter. Thanks bro your the reason i got into the scooter life. Thanks hope to hear from u with some info oh and would totally rock a rolling wrench sticker on my gy6. please send a sticker. next build will be my ruckus hopefully
Thanks for the info specially the codes. But arent there other types of gy6 b?
Like qmk and such?
I have a 157 qmj is my crankshaft and driveshaft bigger than a qmi. Because I have some parts for a 150cc scooter and they don't fit the hole in the veil raiders two small it won't fit over the crankshaft
Hello sir, i hope you can review about motorstar easyride 150n its also gy6 engine.. and whats compatible cvt for it
I have a GY6 motor it does not have the code where you said it would be the only other thing I can find is where it says 124 cm3 I was told it was a 150 when I bought it could you please help me out here I'm trying to order harness stator just things to get it running again it only has 64 hours on the motor any help would be grateful thank you God bless. One other thing Aldi crank or where the stator is it says 125 y x but I was told that does fit 150cc.motor
I have a gy6 157QMJ-H 150cc but it's really different from the 157QMJ.
Very interesting video dude. Wish to have your parts here in the Philippines
How come my Gy6 it’s a long case but for the valve cover only has 2 bolts and they are kinda in the center
thank you for this info I have 125cc but I do carb from honda wave 110cc
Could anybody tell me what motor this is? It looks like a GY6 250 water cooled but I’m not sure. Trying to add photo, but it won’t let me.
could someone please explain.. I have a scooter engine that is stamped 157QNJ its not 157QMJ ... What is the difference ????
Umm.... I have a 12 inch short block. So the Euro-GY6 must be a bit different after all...
i just bought an 2022 maddog 150cc where do i find the bigbore kits for them over 200cc and all the parts like exhaust better handlebars seats graphics???? anybody with info comment back.👌💪🏼
Very interesting, thank you I have a question I do have a GY6JM is there a compression release on the cam?
Great videos and valuable information Rolling Wrench! Thank you.
I have a 2016 Sym HD 200 (171cc) with 19k miles. Runs like new just as the day I bought it and it still looks like it's right out of the showroom, etc. I do all my own routine maintenance, oil changes every 500 miles, all other fluid change-outs on time, valve lash exams, etc.,etc.
Question: Seems to me this GY6 motor is going to continue to serve me well for many more years and miles to come although in your experience about how many more thousands of miles can I expect?
Thank You
Dean
Seattle
I have a 150 cc four valve SYM (VS150) with 62000 kilometers.Oil changes always at 1500 kilometers and my riding styile is VERY abusive, always passenger and very heavy traffic. Pulls as new and my research leads me to spect 100000 kilometers before deep maintenance.
I have a BN157QMJ-3 150cc with the 16” wheel and can’t find parts anywhere
I have, what I believe to be, a GY6. However the plate with the numbers has only a "1P57F" and a serial "16120364". Can you tell from the F what engine it is. It does have two oil cooler ports on the crankcase.
Honda pcx?
I know this isn’t on subject, ( sorry ) I have a rusi 125 scooter gy6 from what I can gather, rusi, sym, motorstar, are all generic gy6 ( wait for it ) o am trying to put Yamaha mio wheels on my rusi, gala 125, there is a way to modify the axle, either swap a mio axle in place,,,??? I have a wheel problem, and mio wheels are plentiful, rusi, not so much, I’m in the Philippines and parts are hard for me to get, if you can help, I would appreciate it, thanks in advance, I dig your passion ,,,,,
I have a 50cc gy6 engine on my scooter but I want to upgrade to a 150cc gy6. Does someone know if it’ll fit on my scooter?
I have a suzuki lets scooter. I don't know which kind is its motor kind A or B.. Can you tell me what kind is it without deassembling the motor?
I have a weird one I think...LK157QMJ-3. I know that it's a Gy6-A. Any recommendations on a kit with no boring required? Ive seen the 61mm piston kit on ur website and the install video. Would this work on my bike?
I have a Evo gr8 gy6 50 cc I will engine swap it to a 150 but what upgrades should I do?
How do you determine how much oil they take? I have a 161QML motor thanks
What if the 150cc has no numbers that tell you the different mines is blank
I have a 2005 QMB GY6 with gas leaking into oil tank. Question, is it better/easier to just replace the engine? And if so what is a good replacement brand?
Thanks for the video. So I have a 139QMB engine so is it a Good Engine to Rebuild. Please let me know thanks
Can I put a QMJ157 (150cc engine) into my Icebear PMZ50-M1 that currently has a QMB139 (50cc engine)? I am unsure if the engine case tabs are different and if the wiring from rollingwrench GY6 swap kit ($1625.00) would bolt right in and wire right up. Any advice would be super appreciated. Thanks!!
I’ve got a Xingyue 150 scooter I’m trying to find gaskets for that is 57mm stud pattern stock bore but neither B gaskets don’t fit anything on the motor
I’m told they are one off engines because they have 16” wheels
Need help
What about the k-blocks? I just picked up a new toy and it has a k block in it. It is turning into a nightmare. Can I just swap out the cylinder and head so parts are more available?
Mine says qmk, what does the qmk mean? I noticed you didn't put that code....would qmk stand for 200cc???
I have a qmk 175cc
yn173mm is what mine has. I can't find any info. I just want to be able to make it bit faster😕
So I have a gy6 150cc in a go kart, a kandi. I just bought another go kart, I'm probably a hoarder, and the engine is a liquid cooled 250cc.the engine. Is in a box... Some assembly required. My question is if the 250cc engine is considered a gy6 as well? I need to. Get some missing parts and know what I have will help.
My motor has a 161QMK. does that mean when 168 cc you did not mention this one in your video anybody in the comments can help thanks.
Sweet! Thanks so much for that information. So, for future reference, one can slip on an MLM pipe, a rejet , cone shaped/mesh screen air filter, a well tuned variator, and reveno clutch along with a yellow contra spring. Would all that allow for an urban express reach 48-50 MPH? Thanks
Im looking for info on PGO scooters, specifically a 2013 PGO metro 125cc. They're made in Taiwan and imported into the US under the name Buddy. This particular one was originally from Guam and the owner shipped it home to the US with him (I have the original Guam Title and paperwork). There's no engine code above the serial, just a PGO brand stamp. Im in the process of teardown / autopsy and putting together a parts list and need to know what engine code to use when searching for parts. A local shop in Guam did a poor job of installing a big bore kit and despite the motor being low mileage and well maintained, there's carnage. It had an NCY head and cylinder and piston was stamped with 58.5.
Hi I recently bought a honda vision gy6 110cc 58.5 port could I upgrade this to 150cc regards
I just got a project 4stroke scooter with a 50cc engine but i have no idea which engine it has. All i really know is that its a chinese engine and it has 4 valves. I have no idea which big bore kit im gonna have to get.
Hi, I have a question regarding my SYM Classic/Fiddle 125cc scooter. My Engine has this code: XS1P52QMI 3, I want to upgrade it to a GY6 150cc engine. BUT, My mounting points on my existing engine are at the bottom, where as the GY6 150cc mounting points are at the top ??? What can be done ?? Cheers
My dream life its get engine like that gy6
I wish I had access to a 150cc bottom mounted engine for my ruckus
Thank you very much for this great information.. I am in the process of upgrading my gy6 B motor stock from 150cc to 180cc taida cylinder. I just wanted to find out if I would need to cut my stock B case to fit the 180cc taida cylinder 63mm . or will it be a direct bolt on?.. Do you have any where we can communicate? Would like to have a chat with u.. Am in Grenada island in the Caribbean.. Help ..
i'm doing same thing.. mine is a chinese engine.. there are kits until max 200 with no need to bore crankcase.. i found a video here in youtube... p.s a crankase boringg tool is always good to have... other friends will need to do the job.. you can ask some spare cash for it..
Could u put a gy6 150 on to a taotao racer 50 that has the gy6 49cc
Yes, you can buy a kit to change your head and position to a 150CC.
@@ELCLAVE300 si compro un motor nuevo gy6 150 para cambiárselo a una tao 50 le queda sin problemas?
My GY6 is stamped "161QML" out of a Go Cart and it's a 150cc. Any idea the additional specs on that?