25:25 setting valve lash. You go on the bottom side (.004 to .005 and you pick .004) . Only thing is that as valve and seat wear( in a hot combustion chamber) the oil splashed cam and rockers wear less. This almost always ends up in valves that don't seat completely, which is accelerated by valve erosion and ALWAYS pronounced on the exhaust valve due to coefficient of thermal expansion differences based on heat/cooling cycles. Exhaust valve is only cooled from oil and seated contact (heat transfer). Intake is cooled by both those but mainly by cold fuel intake (reason carbs "ice up" is evaporation) in relation to relevant heat within the combustion chamber. If in doubt, ALWAYS set valve lash loose. Especially on the exhaust. They Will wear in and close the gap, so to speak.
Thank you. Our 150 is just tired of the abuse my son did on it, so instead of buying a new engine, I decided to rebuild with a big bore kit. This is the exactly the video I was looking for. I will add the performance cam, larger carb (28mm or 30mm) and i hope this thing will fly :-)
Like seriously, I'm a mazdaspeed 3 owner, lost my engine... wel actually my car was stolen not long ago, anyways, over the years of learning about my engine, seeing this video I swear is like perfect for people who want to know a how their engines work and get an idea what pistons are like and how to work them as well as well long story short this videos good for anyone interested in their engines! Extremely versatile video just instead of 1 piston just add your piston count and rinse and repeat the process and just like the rings, 1 is 1 way the next one is opposite and so on and so forth, it's like a seesaw one up one down
Hey with my cam lobes facing down. @22:07. My rocker arms HAS A LOT IF PLAY ROOM. SO I FLIPPED THEM. because I couldn't adjust the dowls on the valve. I have bug bore kit. With a-9. Cam. If I try to adjust the valve there's still like 1-1/2mm of play.
I love love love the gy6 out of all the engines to tear down to every last bolt the gy6 comes apart so nice and goes back nice easy to work on bullet proof and many many mods I love rolling wrench
0.04 is to tight clearance for air cooled engine, u need to put 0.10,when its get to working temp, tht clearance is 0.05, and u nvr gonna burn your valves,just my opinion, cause i have 170 cc gy5,157qmj block and its going 115kph tht would be 71 miles per hour btw good tutorial
19:00 to 19:11 true. But the reason is because the case is cut out. So he is saying if the alignment pins don't push in, they are in the wrong holes. Gasket is diagonally cut also for them. It only fits one way.
And the black hose at the top of the cover? You touched it and moved it a few times, but nothing about what it is for or where it goes. Would you mind explaining that one?
@@RollingWrench anytime great content and services going to do a custom build on a Chinese scooter a naked frame with custom mounts for everything all plastics are being removed now!
this is the perfect how to video for the GY6 motor I have just done this build with a 180cc motor 63mm piston looks just the same except over here in the UK on our scomadi version of the Gy6 out motor hanging mounts are underneath compared to your top version and we have a disk back brake
Hey bubba. Love your video. I got to 18:58 where im installing the jug. And it dosent slide in to the case. I decided to smoke a cigar and drink a tall boy about it. But, i dont know what to do.
Friend, I congratulate you, good video you explain everything very well, few videos of such good quality you can find and your video is the best I've seen in terms of mechanics, I have a buggy with 150 cc engine. By making this modification do you know how many hp I can increase? And finally, if I make this modification, will I have to change something in the carburetor? and you recommend some spark plug coil with more voltage? There will be a high voltage coil on the market for this 150 cc engine.? Thank you very much and again I congratulate you for your video, in fact you explain very well and the quality in hd is very well appreciated all the details. Greetings.
Hey my friend. My neighbor gifted my family his old go kart dune buggy. It was sitting in his back yard for 5 years or better. Everything was full of dirt. I decided to tear it completely down. The kart was made in Korea. It has a gy6 125cc in it. I need everything. Seals, gaskets, bearings, piston, rings, valves. I have a few things ordered. But I want to be sure I ordered the correct parts. And help would be much appreciated.
Thanks for the great video, lots of detail and well explain. I'm replacing the cylinder head on an old Lance Venice inherited from a friend and discover the old piston lost some fragments into the crank case. Any suggestions on how to clean this out or make sure there is nothing left inside that may create a problem ? Also I have no specs regarding nuts torque. what would you advice. Thanks!
would there be a change with the carb or jettings using 61mm block? I heard you can run stock 150cc carb upto 59mm block only. beyond that, jettings should be changed.
It looks the same as a XR/CRF80 or 100 in head and timing chain guide design, I have been cautious of working on OHC engines and now I have completed a few, they are easy.
So you can use a 150cc head on a 171cc cylinder?? Reason I ask if because I've stripped out my spark plug hole and I'm trying to helicoil it now but I would much rather replace head in the end.
Hai, you are very expert about scooter especially, i need a tips from you, i have a modenas elit 150 scooter, how to make it powerful than nw?... What do i need to change to?
How come I’m not getting any compression?? I gapped the rings all offset from each other and the IN mark facing the carburetor side. I can feel air coming out the exhaust port and my hand is getting sucked in on the intake but when I put my finger into the plug hole I’m not getting any compression so what am I doing wrong?
I recently bought a 2020 150cc ice bear q6 trike, don't know nothing about this Brand n I cant find no reviews about it. Are they any good? Are they able to keep up hours of stop n go n Long drive as well? Can I upgrade modified it? What issues do I need to look out for, what to I need to replace if anything. Any info will b great plus I'm a 300 lbs dude any help will work plus I'm new to this world of scooters.
just a hypothetical question: can the new head be installed with the engined mounted to the bike "in situ"? Or must you remove the entire engine to be successful?
Hello. great and detailed video. Can you please leave the link to buy the long gy6 engine with the 171cc kit and carburetor already installed, that is, ready and tested to mount on my scooter, just make the connections and start?
Quick question.. I have the 157qmj motor on my buggy...what is the difference from the same motor on a scooter? Cause the item description says If installing on a buggy or sxs they don't guarantee fitment. just curious.
Is there a way to get more power out of the stock ruckus without adding a gy6. I know a lot of people like the stretched look but I prefer the stock length of the rear.
You make it look very simple. Im saving up for a second bike, it will be a gy6 scooter. In the meantime i wanted to ask, would your EFI plug and play kit work on a geared bike? It has a 26mm intake is a 125cc... but what i am worried about is: will the EFI handle the constant changes in the throttle or is it made specially for scooters where you dont play that much with the throttle?
Thanks for watching. Our efi kit will work in any bike up to 1000cc. We do have DIY EFI kit out now :-) www.rollingwrenchdenver.com/products/diy-rolling-wrench-fuel-injection-kit
I want to do some upgrade on my trike I wonder if all these videos work on it cuz my Motor is spitting out oil from somewhere its not over fill with oil cuz I had did TBE oil change already so any help here
I usually set the piston inside of the cylinder first as a lil assembly then install the dowel and clip that way I don't have to wrestle with the piston rings.
I do it like that its also how honda does it in the factory you dont have to worry about the ring gaps there all set from that point and its less messy oil wise oiling the piston between these stuts is messy
My friend has a gy6 with the EGR tube, but my motor is also gy6 with no EGR valve what’s the difference in our motors? And can I use this big bore kit on mine with no EGR up front? Helllllp
I just finished putting the 155cc kit on my 150 scooter the timing is all right it'll idle fine but when I hit the throttle it bogs down and dies does that mean that I need a bigger main jet
Can you use 125cc Gy6 cylinder head on 180cc Gy6 cylinder? Whats the intake and out take diameters? - But you just mentioned smaller cylinder head adds to compression = power output. But how about those intake and out take holes? How much they matters for power output when using the default 125 cc carburator?
@@jod5659 i have a Honda lead 110cc for sale apparently does 75mph. Previous owner messaged me as he had put the bigger head on. £200 for whole bike. Spares repair
One thing, brother. Around 9 minutes you show stock blue gaskets and exp lain to trim the inside with a razor. You are correct, of course, but don't let the paper based gasket clipping fall into the engine. It can sling around with the oil and end up eating up your ball bearings. 😞 don't ask me how I know, please🙄
This might be a stupid question. I just recently purchased and Ice bear mad dog gen 4 150cc originally now board out to 171cc. The person said use 10-40 when changing oil on crankcase says 15 - 40 which is correct. Please help
Hi I have a gy6 125 cc with engine number of hd 1p52qmi do I still need to measure the stud spacing or will it be the 57mm spacing and if it is the 57mm spacing can I put a 150cc top end kit on it to make it 150 cc
i know Im randomly asking but does anybody know a method to log back into an instagram account? I was dumb lost the login password. I love any tricks you can give me!
@Gibson Curtis i really appreciate your reply. I got to the site thru google and I'm trying it out atm. I see it takes quite some time so I will reply here later when my account password hopefully is recovered.
Wow. A great presentation! My 2016 Sym HD 200 at 19k miles is running silky smooth and strong. However, when that time comes for a fresh rebuild I'll know who to call for parts and great videos. Yes, I'm not a pro mechanic but I can learn. Dean Seattle
Does all a cases fit the 61mm bbk without boring the case? I have a 125cc gy6 stock and planning on upgrading it to the biggest bore possible without touching the case. Most say 58.5 is the limit without boring the case. So if this kit is bolt on i will surely go with this.
hey so I have a 1p57qmj,really having troubles with finding a rebuild kit...its started spewing oil out of the exhaust..do you have the parts for the 1p version?
I have a atv with a type A gy6 and something stuff didn't come with it like the bolts to the air shroud and the air shroud rubber seal can I buy these things off your website? I'm planning on doing some mods but working out the program with it first I like the video
@@RollingWrench does that 171cc fit in the case of the gy6 a with out boring it out? How I found out it was the A gy6 the engine studs are closer thanks to your video I built the top part of the engine but like most guys need more power lol right now having a problem with spark worked good in the trail I got it home shut it off then nothing I replaced the CDI and nothing I got the 4 wheeler from someone that lost parts and it sit for years guess I was asking for trouble
I have a water-cooled Gy6 thats fits into a Surfango surfboard. Could I do a big bore on that. The motor is 150cc and it is hard to find parts for the watercooled version.
I can't seem to find straight answers on the internet. Is there really any difference with the 171 kit over the 150? Trying to decide if it's worth the time and expense and what kind of gains.
Yes,the cylinder is the same as well as the piston and rings,the timing chain has the same number of links.The only difference is in the head..The aluminun where the camshaft sits is like 1.5 mm higher,off the top of my head so.it means it will not accomodate a camshaft with bigger lobes..off the top of my head i would say it takes a camshaft A8 or A9 but not higher,cause of the height..you can use a regular head to replace the original head..and make sure your chain tensioner compensate for the chain slack..I have seen after market chain tensioners that sell as being good for 125 cc and 150 cc and the stem is a little shorter.Hope this helps.There is a lot of missinformation about this on the internet includung forums by guys who pretend to know and in fact they know nothing.The 157 qmj and 1p57qmj are identical gy6 engines..
![GY6 ENGINE BUILD [Everything you need to know]](http://i.ytimg.com/vi/wC5tYKqq0-0/mqdefault.jpg)
![GY6 ENGINE BUILD [Everything you need to know]](/img/tr.png)
![GY6 171cc / 172cc BIG BORE BUILDER ENGINE KIT [A++ PERFORMANCE]](/img/n.gif)
I love how straight forward this is. I think I'm going to be buying a lot more scooters so I can teach my kid and learn myself
Man and you look, you can look at it all you want at the end of the day. You gotta do it yourself.
I don’t even have a gy6 engine but still found it fascinating
P E R F E C T !
It is better you don't have the gy6 engine while I don't even have a ruckus at all but I still find it interesting 😀
Same, but I’m tryna get one as soon as I have a garage
25:25 setting valve lash. You go on the bottom side (.004 to .005 and you pick .004) .
Only thing is that as valve and seat wear( in a hot combustion chamber) the oil splashed cam and rockers wear less. This almost always ends up in valves that don't seat completely, which is accelerated by valve erosion and ALWAYS pronounced on the exhaust valve due to coefficient of thermal expansion differences based on heat/cooling cycles. Exhaust valve is only cooled from oil and seated contact (heat transfer). Intake is cooled by both those but mainly by cold fuel intake (reason carbs "ice up" is evaporation) in relation to relevant heat within the combustion chamber.
If in doubt, ALWAYS set valve lash loose. Especially on the exhaust. They Will wear in and close the gap, so to speak.
Thank you. Our 150 is just tired of the abuse my son did on it, so instead of buying a new engine, I decided to rebuild with a big bore kit. This is the exactly the video I was looking for. I will add the performance cam, larger carb (28mm or 30mm) and i hope this thing will fly :-)
Have you done the build yet?
How'd the build turn out
How did it turn out?
Thanks for this like big time. I can’t find anyone to do my work, so I must learn.
I am a Taiwanese. I just installed a 61mm cylinder on my 26year old 125cc GY6 scooter. It becomes young again！
Perfect! Did you use Taida?
Like seriously, I'm a mazdaspeed 3 owner, lost my engine... wel actually my car was stolen not long ago, anyways, over the years of learning about my engine, seeing this video I swear is like perfect for people who want to know a how their engines work and get an idea what pistons are like and how to work them as well as well long story short this videos good for anyone interested in their engines! Extremely versatile video just instead of 1 piston just add your piston count and rinse and repeat the process and just like the rings, 1 is 1 way the next one is opposite and so on and so forth, it's like a seesaw one up one down
Just put a Mikuni carb in but popped the head gasket in the process when starting it up, ordering y’all drop in kit Friday I’m hyped
Hell yaaa! You will love it!!
Hey with my cam lobes facing down. @22:07. My rocker arms HAS A LOT IF PLAY ROOM. SO I FLIPPED THEM. because I couldn't adjust the dowls on the valve. I have bug bore kit. With a-9. Cam. If I try to adjust the valve there's still like 1-1/2mm of play.
This is a really good tutorial because you have a clear and step by step tutorial, I subcribe! Hit the bell and thumbs up..thank you
I love love love the gy6 out of all the engines to tear down to every last bolt the gy6 comes apart so nice and goes back nice easy to work on bullet proof and many many mods I love rolling wrench
0.04 is to tight clearance for air cooled engine, u need to put 0.10,when its get to working temp, tht clearance is 0.05, and u nvr gonna burn your valves,just my opinion, cause i have 170 cc gy5,157qmj block and its going 115kph tht would be 71 miles per hour btw good tutorial
I appreciate the support 🙏. All the details in this video is what’s worked best for me in my 18 years of experience.🤘🏻👍🏻
19:00 to 19:11 true. But the reason is because the case is cut out. So he is saying if the alignment pins don't push in, they are in the wrong holes. Gasket is diagonally cut also for them. It only fits one way.
Because of your fully explanation I subscribed thank you hope more video regarding rebuild of GY6 150 motors
you should make some videos about 200cc or 250cc or 300cc mopeds/scooters
And the black hose at the top of the cover? You touched it and moved it a few times, but nothing about what it is for or where it goes. Would you mind explaining that one?
As many others have already stated, great job! I just had to jump on the long list of others that appreciate your great content! Sub'd
C500cc mopead
Just purchased the 171big bore just and two valve performance head, also throwing in the A9 cam can't wait to see my scoot fly
Heck ya dude!!! That will wake it up for sure!!!! Thanks for the support 🙏
@@RollingWrench anytime great content and services going to do a custom build on a Chinese scooter a naked frame with custom mounts for everything all plastics are being removed now!
this is the perfect how to video for the GY6 motor I have just done this build with a 180cc motor 63mm piston looks just the same except over here in the UK on our scomadi version of the Gy6 out motor hanging mounts are underneath compared to your top version and we have a disk back brake
Have some experiene with motors but man , still learned someting new, great tutorial, thx!
Need this guy in the uk 🇬🇧
Hey bubba. Love your video.
I got to 18:58 where im installing the jug. And it dosent slide in to the case. I decided to smoke a cigar and drink a tall boy about it. But, i dont know what to do.
I removed the jug and re razored the gaskets of the case ID. No luck.
Half way thru cigar and tall boy, im thinking thermal expansion. Should i put jug in my freezer for a little?
Around 12:28 some rings are bevel and flat. Is so, then the bevel of the ring goes up, the flat goes down.
AWESOME TUTORIAL !!! From Philippines
tara mga nka 150/pwede pla hanggang 171 panu kaya intake at exaust pwede parin kaya stock carb at pipe?
Where did you get the crankcase breather/dipstick combo you don’t sell them just breathers
You made a boring tool for a drill!?!? That's so cool
Nice to work with new engines
you have some great build videos though. tons of good information.
I just got a 4 seat go-kart for my kids that need motor/electrical work it has a gy6/clone I'm going to build it now
Friend, I congratulate you, good video you explain everything very well, few videos of such good quality you can find and your video is the best I've seen in terms of mechanics, I have a buggy with 150 cc engine. By making this modification do you know how many hp I can increase? And finally, if I make this modification, will I have to change something in the carburetor? and you recommend some spark plug coil with more voltage? There will be a high voltage coil on the market for this 150 cc engine.?
Thank you very much and again I congratulate you for your video, in fact you explain very well and the quality in hd is very well appreciated all the details. Greetings.
every engine is different.
Definitely
Hey my friend. My neighbor gifted my family his old go kart dune buggy. It was sitting in his back yard for 5 years or better. Everything was full of dirt. I decided to tear it completely down. The kart was made in Korea. It has a gy6 125cc in it. I need everything. Seals, gaskets, bearings, piston, rings, valves. I have a few things ordered. But I want to be sure I ordered the correct parts. And help would be much appreciated.
It would be nice to know the before and after HP ratings torque also would be great...
Yes I agree. Unfortunately I don’t have a dyno.
Thanks for the great video, lots of detail and well explain. I'm replacing the cylinder head on an old Lance Venice inherited from a friend and discover the old piston lost some fragments into the crank case. Any suggestions on how to clean this out or make sure there is nothing left inside that may create a problem ? Also I have no specs regarding nuts torque. what would you advice. Thanks!
Great video! I just bought a Hammerhead buggy with the 150cc GY6. Thanks for the info.
Did you ever do the upgrade?
would there be a change with the carb or jettings using 61mm block? I heard you can run stock 150cc carb upto 59mm block only. beyond that, jettings should be changed.
The oil breather u have look like it have a dipstick with it too do you seek that whole thing exactly like the one on the video ??
It looks the same as a XR/CRF80 or 100 in head and timing chain guide design, I have been cautious of working on OHC engines and now I have completed a few, they are easy.
The shim type valves are a little more tricky. But they are both easy with patience.
Amazing how dry that motor is and hasn't even been test ran at the factory.You think they would at least use assembly lube
My thoughts exactly. Even a $100 harbor freight motor gets ran before it leaves and will have lube/grease in it.
Connections
So you can use a 150cc head on a 171cc cylinder?? Reason I ask if because I've stripped out my spark plug hole and I'm trying to helicoil it now but I would much rather replace head in the end.
Hai, you are very expert about scooter especially, i need a tips from you, i have a modenas elit 150 scooter, how to make it powerful than nw?... What do i need to change to?
Nice tutorial. Very helpful.
How come I’m not getting any compression?? I gapped the rings all offset from each other and the IN mark facing the carburetor side. I can feel air coming out the exhaust port and my hand is getting sucked in on the intake but when I put my finger into the plug hole I’m not getting any compression so what am I doing wrong?
I recently bought a 2020 150cc ice bear q6 trike, don't know nothing about this Brand n I cant find no reviews about it. Are they any good? Are they able to keep up hours of stop n go n Long drive as well? Can I upgrade modified it? What issues do I need to look out for, what to I need to replace if anything. Any info will b great plus I'm a 300 lbs dude any help will work plus I'm new to this world of scooters.
You should always check ring end gap in the bore before installing them onto the piston.
True
@Kevin Stearns with most kits yes. But ours no. Here is a link:
www.rollingwrenchdenver.com/products/gy6-171cc-big-bore-kit
Anyone know where I can find a replacement shroud gasket/seal? I cant find one for the life of me.. any help is appreciated. Love this channel
just a hypothetical question: can the new head be installed with the engined mounted to the bike "in situ"? Or must you remove the entire engine to be successful?
Sometimes yes and sometimes no. The fact that you ask that . Makes me think you should go ahead and remove your engine . Lol
Hello. great and detailed video. Can you please leave the link to buy the long gy6 engine with the 171cc kit and carburetor already installed, that is, ready and tested to mount on my scooter, just make the connections and start?
Quick question.. I have the 157qmj motor on my buggy...what is the difference from the same motor on a scooter? Cause the item description says If installing on a buggy or sxs they don't guarantee fitment. just curious.
Is there a way to get more power out of the stock ruckus without adding a gy6.
I know a lot of people like the stretched look but I prefer the stock length of the rear.
Spot on vid m8 deffo the best one I’ve seen and thanks for the info was just about to fit my m8s big bore 👍🏻
That was the single greatest tutorial video I have ever seen. Can you do my gy6 atk 150c buggy tao tao? To slow
Thanks man! Ya you can do a big bore kit on that
Outstanding! Step by step.
I have a 150cc Advenger stark scooter. I want to be a lil faster and stronger... can i get this same set up fr my bike.. need to know asap
Hello..61mm piston can fit original crankcase?
You make it look very simple. Im saving up for a second bike, it will be a gy6 scooter. In the meantime i wanted to ask, would your EFI plug and play kit work on a geared bike? It has a 26mm intake is a 125cc... but what i am worried about is: will the EFI handle the constant changes in the throttle or is it made specially for scooters where you dont play that much with the throttle?
Thanks for watching. Our efi kit will work in any bike up to 1000cc. We do have DIY EFI kit out now :-) www.rollingwrenchdenver.com/products/diy-rolling-wrench-fuel-injection-kit
Where did you buy that oil dip stick thing, with the air thingy.
Sir, I have a Tao Tao 150. What would you charge to build one of these, with an aggressive trans?
I want to do some upgrade on my trike I wonder if all these videos work on it cuz my Motor is spitting out oil from somewhere its not over fill with oil cuz I had did TBE oil change already so any help here
Also on the piston should I order cast or forged? Thank you for all info
Its looks like sym jet 14 200i euro 4 engine right? Is it the same engine?
What's the name of the oil vent/cooler adapter(blue)? Tried looking at your website but can't find one.
The hose that is hang down? my gy6 had it and it ripped off im tryna find out what it is and what do i attach it to
I usually set the piston inside of the cylinder first as a lil assembly then install the dowel and clip that way I don't have to wrestle with the piston rings.
That's anther way to do it. I find it a little bit easier to do it my way. But thanks for the mention, other people may prefer this method
I do it like that its also how honda does it in the factory you dont have to worry about the ring gaps there all set from that point and its less messy oil wise oiling the piston between these stuts is messy
Is it good performance just by changing the cylinder?
Isn't it necessary to change the carb too?
My friend has a gy6 with the EGR tube, but my motor is also gy6 with no EGR valve what’s the difference in our motors? And can I use this big bore kit on mine with no EGR up front? Helllllp
I just finished putting the 155cc kit on my 150 scooter the timing is all right it'll idle fine but when I hit the throttle it bogs down and dies does that mean that I need a bigger main jet
Ya bigger jet for sure
Can you use 125cc Gy6 cylinder head on 180cc Gy6 cylinder? Whats the intake and out take diameters? - But you just mentioned smaller cylinder head adds to compression = power output. But how about those intake and out take holes? How much they matters for power output when using the default 125 cc carburator?
The breather on your site is much different. How do I get this setup?
Is there anything you have to do to the fuel system or to the carburetor to adjust for more fuel for this change in displacement
Hi, which the Best camshaft for 58.5mm cylinder kit? A9 or a12? Thanks
Hello.
What is the biggest upgrade i can do on a 50cc gy6 engine without changing the conrod and big end?
Thankyou
That's what I want to know too what is the biggest big boy can I can put on a gy650 also did you ever get an answer I need to know also
@@jod5659 i think its about 110cc- a Honda Lead cyclinder head is the same i believe as a gy6
@@jod5659 i have a Honda lead 110cc for sale apparently does 75mph. Previous owner messaged me as he had put the bigger head on. £200 for whole bike. Spares repair
does the 171cc kit require that we bore out the bottom end? or is it just a bolt on?
Bolt on
I plan to convert from 125cc to this. Do I need bigger exhaust? And what about carb? Bigger jets?
awesome build video dude. super informative and detailed mate.
Thanks for the kind words! I appreciate the support 💯🙏🏻
Hi I can use this kit on my x-pro 125cc thanks
One thing, brother. Around 9 minutes you show stock blue gaskets and exp lain to trim the inside with a razor.
You are correct, of course, but don't let the paper based gasket clipping fall into the engine. It can sling around with the oil and end up eating up your ball bearings. 😞 don't ask me how I know, please🙄
Can you tell me what my stock engine size is? So I can do big bite kit upgrade.. I have Chinese engine stock 162qmk1
Where is the dipstick with the breather attached, like in this build? Looked on the web site and could not find it.
We can’t get them anymore :-(
@@RollingWrench is there a brand name on them so i can search on ebay in case anyone is selling one they already own?
This might be a stupid question. I just recently purchased and Ice bear mad dog gen 4 150cc originally now board out to 171cc. The person said use 10-40 when changing oil on crankcase says 15 - 40 which is correct. Please help
Gy6 motors can use a wide range of different viscosity’s. You can use one or the other. It doesn’t matter.
Hi I have a gy6 125 cc with engine number of hd 1p52qmi do I still need to measure the stud spacing or will it be the 57mm spacing and if it is the 57mm spacing can I put a 150cc top end kit on it to make it 150 cc
Excellent clear and concise instruction, well done, i can tackle my gy6 top end rebuild with much more confidence, thankyou.
i know Im randomly asking but does anybody know a method to log back into an instagram account?
I was dumb lost the login password. I love any tricks you can give me!
@Aries Clark instablaster :)
@Gibson Curtis i really appreciate your reply. I got to the site thru google and I'm trying it out atm.
I see it takes quite some time so I will reply here later when my account password hopefully is recovered.
@Gibson Curtis it did the trick and I actually got access to my account again. I am so happy:D
Thanks so much, you saved my account!
@Aries Clark Happy to help :)
Whats the bore type of tao tao lancer powersports 150cc? Is that a gy6 also thanks
Is the TDC mark on your lighten flywheel as well?? I didn't even think about looking when I installed it.
Yes :-)
Great vid mate you explain everything thing in detail. It looks like you don't need to re jet the carb is that right?
Wow. A great presentation! My 2016 Sym HD 200 at 19k miles is running silky smooth and strong. However, when that time comes for a fresh rebuild I'll know who to call for parts and great videos. Yes, I'm not a pro mechanic but I can learn.
Dean
Seattle
Hi
I want to make it for 125cc, but the engine is injection, what adjustment is needed for this? thanks.
My second Q, you did the same clearance adjustment on the exhaust valve?, i mean .004 for the intake and .004 on the exhaust too?
That is correct
@@shannon9487 0.004 is big enough for exhaust..Both at 0.004 is perfect
Does all a cases fit the 61mm bbk without boring the case? I have a 125cc gy6 stock and planning on upgrading it to the biggest bore possible without touching the case. Most say 58.5 is the limit without boring the case. So if this kit is bolt on i will surely go with this.
hey so I have a 1p57qmj,really having troubles with finding a rebuild kit...its started spewing oil out of the exhaust..do you have the parts for the 1p version?
If we change the original bore, do we nee to change the carburator too?
No, you don’t need to. You can though
Will this kit work on the DN 150cc Baja go-kart motor?
I have a atv with a type A gy6 and something stuff didn't come with it like the bolts to the air shroud and the air shroud rubber seal can I buy these things off your website? I'm planning on doing some mods but working out the program with it first I like the video
Yes no problem. Just click the create a parts estimate on the website
@@RollingWrench does that 171cc fit in the case of the gy6 a with out boring it out? How I found out it was the A gy6 the engine studs are closer thanks to your video I built the top part of the engine but like most guys need more power lol right now having a problem with spark worked good in the trail I got it home shut it off then nothing I replaced the CDI and nothing I got the 4 wheeler from someone that lost parts and it sit for years guess I was asking for trouble
I have a water-cooled Gy6 thats fits into a Surfango surfboard. Could I do a big bore on that. The motor is 150cc and it is hard to find parts for the watercooled version.
That's a great video. Thanks a lot. I learned to many things and feel appreciated.
I really appreciate the kind words 🙏🏻💯
How can I get a phone number to get in contact with you?
I can't seem to find straight answers on the internet. Is there really any difference with the 171 kit over the 150? Trying to decide if it's worth the time and expense and what kind of gains.
Yes huge difference in power. You will gain about 20% more power.
Now I use peugeot django qmj157 151cc ..
Can this engine upgrade to 200 cc ?
😀😀
Do the two top rings not have a top and bottom?
Does the breather tube breathe or is it just a chamber to relieve pressure
Shouldn’t you be doing a high torque starter clutch and high torque starter motor as part of any big bore kit?
You can, I don’t worry to much with the 171. Any larger for sure
Mine says 1p57qmj. Would this cylinder fit ?
Yes
It's a 150cc look for 61 mm big bore kits . You can go up to 61 mm without case boring. Making it a 171 cc.
Yes,the cylinder is the same as well as the piston and rings,the timing chain has the same number of links.The only difference is in the head..The aluminun where the camshaft sits is like 1.5 mm higher,off the top of my head so.it means it will not accomodate a camshaft with bigger lobes..off the top of my head i would say it takes a camshaft A8 or A9 but not higher,cause of the height..you can use a regular head to replace the original head..and make sure your chain tensioner compensate for the chain slack..I have seen after market chain tensioners that sell as being good for 125 cc and 150 cc and the stem is a little shorter.Hope this helps.There is a lot of missinformation about this on the internet includung forums by guys who pretend to know and in fact they know nothing.The 157 qmj and 1p57qmj are identical gy6 engines..
Big Em..you are right,the biggest you can go without boring the case is 61 mm
Some of the 61mm kits have thicker sleeves so you still have to bore. . Just be sure you get a drop in kit