When the head breaks off that hollowed out bolt get you 2 self drill screws or tapping screws . Use a long one to set whats left of the bolt an a short one with red gasket an tighten
I have done a few mods on my gy6 50cc, I have swapped the bottom end to an 80cc with stock 50cc ported heads I take and exhaust. Took three rollers out and put a washer under the needle jet. Got me 44mph lmk if there’s any free mods that I could do that I missed. Btw great video👍🏽👍🏽👍🏽🤙🏽🤙🏽🤙🏽
why keep stock 50 head with an 80 bottom end? Just curious. I would think just finishing that top end with 69 valves or stock and a A9 cam would easily add so much power with the supporting mods of course.
Yes the bottom end was a do or part from someone. Just utilizing what I have and see if power could improve through mostly stock parts. I live in Hawaii cost of living is already high. Alohaz Braddah 🤙🏽🤙🏽🤙🏽
@@davidhofinger4927 ive got a honda lead 100cc 2007 its done 46000 miles same engine ive just changed belt and variator ime putting a 44mm carb on soon ,,,jez uk ...
Good to know thank you brother I’ve never looked it up good information though Those letters don’t match up with what it is besides the exhaust valve that’s an interesting choice in letters
I know lol This was at the infancy of my mechanic career on scooters I wish I didn’t include all that extra stuff but here we are at least I am motivating people to change their oil to get it fresh 🤷♂️
I did not, To this day I still do not either and I have done much much more work to this bike in this video. It is fully built at this point no head gasket issues, but I do a lot of maintenance a lot more than I would like too lol But it’s worth it
Bruh😂😂 and once you tighten the chain tensioner and the spring engages the little metal piece that presses against the chain guide you don’t even have to have the spring and nut in it it’s already engaged you have to disengage the little lock before reinstalling if you remember
This was quite old I ended up buying a new chain tensioner off vmc Chinese parts.com it came in one week but duct tape to do the trick for a week 😂 I will continue to make more the build is not done I’ve made recent videos in the past month and it keeps going
I am fairly new to your channel I like the way you do things do you happen to have A video on how to put the piston, rings and a 80 cc head on pony 50 also what carburetor can I buy on Amazon? Thanks man
@@paultoomey7016 I do not when I got my kit it came with them installed but I do know how to do them now, But there are plenty of other videos on UA-cam explaining how to do so with this new bike I’m buying when I big bore it that’s a good idea to include. www.amazon.com/Glixal-ATMT1-073-1-Carburetor-Electric-Chinese/dp/B01EWHUHMM/ref=mp_s_a_1_1?crid=3840ZZ7V7QYJM&keywords=glixal+20mm+carburetor&qid=1653354129&sprefix=glixal+20mm+carburetor%2Caps%2C126&sr=8-1 same one I use currently still
I watched your video over and over . I only ask because I have a lot of gy6 parts and the cam you showed with the CX on it is that the new cam.? Because I have one and it looks way better than the other ones I have.
Thank you I appreciate that man I’m glad I could help but no the one of the CX on it is the stock shaft. Yes the upgraded camshaft physically looks better you will be able to see a difference between the two the spacing in between the lobes is larger as well
When you run it does it have a popping sound almost like popcorn from the exhaust? I put a big bore kit along with the a-9 cam I put lighter cvt rollers and upgraded the final drive gear I get 56-60 mph but I don't like the popping sound from the exhaust.
No no popping, That sound that you’re hearing is leftover gas in the header igniting causing it to backfire, Indicating that you’re running rich because there’s leftover fuel burning away and popping. Try one smaller jet size and then check your plug to see what it reads and see if it goes away
Yeah it’s not necessary to drain the oil and takeoff the plastic housing I was taking everything apart to show what’s going on and I need to change my oil at that point in time
@@fredericklein9784 big increase in torque and good top end. Highly recommend. I sold the scooter a few months ago and it surprised the guys who rode it
@@amatureskater15 a few weeks ago i bought a 50cc Chinese Scooter with rust and broken crankshaft. I ordered new big bore kit 72cc with head and a new a9 camshaft from AliExpress along with new crankshaft. Have had it happen today and kicked the starter for the very first time after repair. Put a 85ish main jet in and an open air filter. It just has fired up. Now I have to glue all those broken plastic covers together to complete the scooter. For sure I will still have to fine tune the carb. How long does take it for the new piston to break in? Any suggestions? Sorry for my bad English, I am German..
@@fredericklein9784 You good bro! Sounds like you got it all figured out. I've been told... Anywhere from 50-200 miles for a good break in period. Make sure to change the oil a lot. Till you get above a few hundred miles
Yeahhh Right after I said don’t strip it out too, Ordered a new one and put it on I just never said anything about it because it’s not anything performance related I’m being super careful with this new one
@@davidhofinger4927 everything ties in together in the end especially when making more power. My pour first ruckus I had Hitting almost 50+ mph ended up coming apart on me oil going everywhere which it did have over 6,000 hard miles when bought it lol but all I need is a new rebuild kit which ain't much and is our next project
You on Facebook cause we got got several parts we might be able to help you our with. As we wish to build a community on here of us smaller channels to help each other grow
@@ORIGINALCONCEPTGARAGE Yeah I’m on Facebook the same name as my channel my birth name I’m actually part of a community on Facebook called Chinese project scooters that has people like Trevor Pritchett and a few other famous you tubers and just generallly passionate people who build Chinese bikes, I feel the same way I encourage average Joe builders with a UA-cam channel or not to communicate and build the platform more and more. You can look my name up if you like My picture is me on a moped dressed as ghost rider for Halloween this year, that would be awsome man
you don't have to take the intake and the plastic around the motor off...the only thing i do is find top dead center...and just remove the valve cover and timing chain tensioner and rocker arm...i have been working on the gy6 motors for 11 years...
I know I know I did a lot of extra stuff for no reason this was last year and since then I have built many motors since then I don’t know why I did all that it is what it is
I am not being mean but thank you for making an idiot like me feel like i can do this. As an idiot that just bought a scooter an wants to learn how to make go fast and learn how to fix and work on a motors. not trying to be a rocket surgeon here. Thanks for the good vid
No problem but don’t be so hard on yourself you gotta start somewhere It’s not that hard my man just takes some patience and research and getting your hands a little dirty. I made mistakes along the way learn from them and pushed forward and I know not to make that same mistake again
@@davidhofinger4927 I say it because there is always someone smarter than you. I keeps me wanting to learn more. You should have one of those buy me a coffee or patron. Don't mind throwing a few bucks to people who make good videos.
Don’t know what you’re asking me can you use stock or can you use stock? That doesn’t make sense if you’re getting big valves you will need to change your rocker arms as well
@@davidhofinger4927 you can use your stock head on a 50cc all the way to 100cc . In fact the stock head will give you more compression. That's more power. The high performance Head is deeper, so not as much compression. Does that make sense to you? That's why when hot rods are built they shave their heads. More compression equals more power.
It’s just a safety precaution on first startup, Your camshaft will be adequately oiled from the chain at throws oil from the bottom of the motor to the top into the rocker assembly and camshaft
@@Tomijus yeahhh that chain tensioner is TRASH I Ordered a new one and almost stripped that one out too putting it on. Definitely not a good part at all on these bikes just be really careful with them
I get it I shouldn’t have included that but I needed to change my oil anyways, You surely don’t need to waste your time to correct me on UA-cam when I built a four stroke 139qmb that hits 50 🤷♂️
I simply just bought another one it was like five bucks for a whole new chain tensioner itself VMC Chinese parts The great website for factory replacement parts
Nice vid very easy to understand an I had one question I'm about to swap my head's to put the bore kit in it do you have any suggestions on what to use when I put the gaskets on should I use something like Honda bond or something for each part of the head do I need anything or just keep it dry and place the gaskets on for the bore and the head thanks for then help 👍😁
I appreciate the feedback that was my goal short simple and sweet except for the end because my camera running out of storage, But when I did my big bore kit It came with one metal gasket and one paper gasket one in between the jug and head and one in between the head and something else but I did not use any sealant of any kind because the gaskets were brand new. There was no need in my case with brand new everything and I never had any leaks.
@@halethewhale lol I wish got that comment last week it makes sense my piston got so hot after using the grey permatex I used the stuff around the base but used the guides put those in place then slide the bore and the head on the bike ran for a hour or so but like u said I think it wasn’t getting oil the piston scratch the walls and I had such a stuck wrist pin I had to cut the piston off but now the wrist pin stuck on the rod 😕 tried using the bolt trick pb blaster to get the wrist pin off to just put the bike back to stock thanks for the info definitely getting a stock base gasket
No to your question man don't put anything on your gaskets just make sure you torque everything to spects and as you have your bike apart make sure you put a rag where the push rod comes off the crank so that nothing falls into the engine not all the way just enough to keep that from happening then take it back out as you put it together.
Aaaaaaaand It definitely is because I compared it to my stock cam directly next to it just like in the cover photo, y’all internet thugs know everything I got another 8 fake A9 Cams laying around if you want it bud 😂
@@davidhofinger4927 i just installed a9, lobes are thicker, that is racing cam. It has 1mm more lift and some more duration than stock but not as much as a9
It's hard to find a true a9 cam, there are ten different ones from different vendors on Amazon. I bought all my bbk (47mm head with 69mm valves, 47mm cylinder,69mm rockers) parts from Glixal, but declined the a9 at the last minute because of so many negative comments. Any leads on a true a9 performance cam?
It's top dead center, when the holes are lined up on the cylinder .
4 stroke..... Valves will be closed
When the head breaks off that hollowed out bolt get you 2 self drill screws or tapping screws . Use a long one to set whats left of the bolt an a short one with red gasket an tighten
I have done a few mods on my gy6 50cc, I have swapped the bottom end to an 80cc with stock 50cc ported heads I take and exhaust. Took three rollers out and put a washer under the needle jet. Got me 44mph lmk if there’s any free mods that I could do that I missed. Btw great video👍🏽👍🏽👍🏽🤙🏽🤙🏽🤙🏽
why keep stock 50 head with an 80 bottom end? Just curious. I would think just finishing that top end with 69 valves or stock and a A9 cam would easily add so much power with the supporting mods of course.
Yes the bottom end was a do or part from someone. Just utilizing what I have and see if power could improve through mostly stock parts. I live in Hawaii cost of living is already high. Alohaz Braddah 🤙🏽🤙🏽🤙🏽
you did well bro well done it will go better with a bigger jet in the carb and valve adjustment
Already done did that too .4 on my valves and a 96 main jet
@@davidhofinger4927 ive got a honda lead 100cc 2007 its done 46000 miles same engine ive just changed belt and variator ime putting a 44mm carb on soon ,,,jez uk ...
Your better than me .
It took me a half a day to do the bbk . I didn't opt for the cam upgrade yet because my muffler is still stock .
E: Exhaust Valve, X: Intake Valve, S: Valve Spring and F: Valve Lift
Good to know thank you brother I’ve never looked it up good information though
Those letters don’t match up with what it is besides the exhaust valve that’s an interesting choice in letters
@@davidhofinger4927 Got it off of GPT chat
Q: What is e, x, s, and f on 50cc valves ?
Keep scootin' 🛵😁
But “ex” and “fs” are the marks. Not e and x and f and s. FS is probably the china abbreviation for intake
No need to drain da oil
I know lol
This was at the infancy of my mechanic career on scooters I wish I didn’t include all that extra stuff but here we are at least I am motivating people to change their oil to get it fresh 🤷♂️
That bolt in the tensioner isnt a bolt really
Did you have a problem with your gaskets leaking after you took your cam out.mine did
I did not, To this day I still do not either and I have done much much more work to this bike in this video. It is fully built at this point no head gasket issues, but I do a lot of maintenance a lot more than I would like too lol
But it’s worth it
Bruh😂😂 and once you tighten the chain tensioner and the spring engages the little metal piece that presses against the chain guide you don’t even have to have the spring and nut in it it’s already engaged you have to disengage the little lock before reinstalling if you remember
You are absolutely right! I Also stripped my screw and then i panicked, but after thinking a little i figured out that it doesnt matter haha😂😂
To change camshaft just remove the valve cover and the access panel for the tensioner. No need take off the shrouds
BTW the malossi camshaft is the best one hands down.
Awesome job dude you can use some liquid steel rather than duct tape that’s what I had to do once. Never had any problems. Thanks for the videos
This was quite old I ended up buying a new chain tensioner off vmc Chinese parts.com it came in one week but duct tape to do the trick for a week 😂 I will continue to make more the build is not done I’ve made recent videos in the past month and it keeps going
I am fairly new to your channel I like the way you do things do you happen to have A video on how to put the piston, rings and a 80 cc head on pony 50 also what carburetor can I buy on Amazon? Thanks man
@@paultoomey7016 I do not when I got my kit it came with them installed but I do know how to do them now, But there are plenty of other videos on UA-cam explaining how to do so with this new bike I’m buying when I big bore it that’s a good idea to include. www.amazon.com/Glixal-ATMT1-073-1-Carburetor-Electric-Chinese/dp/B01EWHUHMM/ref=mp_s_a_1_1?crid=3840ZZ7V7QYJM&keywords=glixal+20mm+carburetor&qid=1653354129&sprefix=glixal+20mm+carburetor%2Caps%2C126&sr=8-1 same one I use currently still
The big hole in the cam, should always face north when at TDC. btw...
? Small hole north small hole south big hole west. TDC is there
Really nice video 🙂
I watched your video over and over . I only ask because I have a lot of gy6 parts and the cam you showed with the CX on it is that the new cam.? Because I have one and it looks way better than the other ones I have.
Thank you I appreciate that man I’m glad I could help but no the one of the CX on it is the stock shaft. Yes the upgraded camshaft physically looks better you will be able to see a difference between the two the spacing in between the lobes is larger as well
When you run it does it have a popping sound almost like popcorn from the exhaust? I put a big bore kit along with the a-9 cam I put lighter cvt rollers and upgraded the final drive gear I get 56-60 mph but I don't like the popping sound from the exhaust.
No no popping, That sound that you’re hearing is leftover gas in the header igniting causing it to backfire, Indicating that you’re running rich because there’s leftover fuel burning away and popping. Try one smaller jet size and then check your plug to see what it reads and see if it goes away
What final gear did you use?
I’m just confused on why you think you need to drain the oil during this your just taking the rocker arms off and doing a valve adjustment pretty much
Same Idk why he did that I guess just to run everything new he changed the oil lol
I put a new came in I didn't drain the oil or take off the carburetor you just remove the valve cover in the rocker arms done
Yeah it’s not necessary to drain the oil and takeoff the plastic housing I was taking everything apart to show what’s going on and I need to change my oil at that point in time
Yeah, he took a lot of unnecessary steps.
Give the guy a break he’s showing us how to do things and what to expect. Get over it!
Good job bro nice video
Combine the A9 cam with a 47mm BBK and head. Doing the same build in a few weeks
how does it turned out?
@@fredericklein9784 big increase in torque and good top end. Highly recommend. I sold the scooter a few months ago and it surprised the guys who rode it
@@amatureskater15 a few weeks ago i bought a 50cc Chinese Scooter with rust and broken crankshaft. I ordered new big bore kit 72cc with head and a new a9 camshaft from AliExpress along with new crankshaft. Have had it happen today and kicked the starter for the very first time after repair. Put a 85ish main jet in and an open air filter. It just has fired up. Now I have to glue all those broken plastic covers together to complete the scooter. For sure I will still have to fine tune the carb. How long does take it for the new piston to break in? Any suggestions? Sorry for my bad English, I am German..
@@fredericklein9784 You good bro! Sounds like you got it all figured out. I've been told... Anywhere from 50-200 miles for a good break in period. Make sure to change the oil a lot. Till you get above a few hundred miles
I feel for ya on the tensioner, as quality isn't what it used to be.
Yeahhh Right after I said don’t strip it out too, Ordered a new one and put it on I just never said anything about it because it’s not anything performance related I’m being super careful with this new one
@@davidhofinger4927 everything ties in together in the end especially when making more power. My pour first ruckus I had Hitting almost 50+ mph ended up coming apart on me oil going everywhere which it did have over 6,000 hard miles when bought it lol but all I need is a new rebuild kit which ain't much and is our next project
You on Facebook cause we got got several parts we might be able to help you our with. As we wish to build a community on here of us smaller channels to help each other grow
@@ORIGINALCONCEPTGARAGE Yeah I’m on Facebook the same name as my channel my birth name I’m actually part of a community on Facebook called Chinese project scooters that has people like Trevor Pritchett and a few other famous you tubers and just generallly passionate people who build Chinese bikes, I feel the same way I encourage average Joe builders with a UA-cam channel or not to communicate and build the platform more and more. You can look my name up if you like My picture is me on a moped dressed as ghost rider for Halloween this year, that would be awsome man
you don't have to take the intake and the plastic around the motor off...the only thing i do is find top dead center...and just remove the valve cover and timing chain tensioner and rocker arm...i have been working on the gy6 motors for 11 years...
I know I know I did a lot of extra stuff for no reason this was last year and since then I have built many motors since then I don’t know why I did all that it is what it is
How do you find top dead center
I am not being mean but thank you for making an idiot like me feel like i can do this. As an idiot that just bought a scooter an wants to learn how to make go fast and learn how to fix and work on a motors. not trying to be a rocket surgeon here. Thanks for the good vid
No problem but don’t be so hard on yourself you gotta start somewhere It’s not that hard my man just takes some patience and research and getting your hands a little dirty. I made mistakes along the way learn from them and pushed forward and I know not to make that same mistake again
@@davidhofinger4927 I say it because there is always someone smarter than you. I keeps me wanting to learn more. You should have one of those buy me a coffee or patron. Don't mind throwing a few bucks to people who make good videos.
Why did you take all the stuff off when you only had to take the valve cover off and remove the rocker arm.and there it is
Can i use stock 80cc head (to change valve springs, rocker arms ) or i can stay with stock ? or i can put 69mm valves instaed of 64mm stock?
Don’t know what you’re asking me can you use stock or can you use stock? That doesn’t make sense if you’re getting big valves you will need to change your rocker arms as well
@@davidhofinger4927 you can use your stock head on a 50cc all the way to 100cc . In fact the stock head will give you more compression. That's more power. The high performance Head is deeper, so not as much compression. Does that make sense to you? That's why when hot rods are built they shave their heads. More compression equals more power.
Hay bud I did a bbk becuz my moped die out of nowhere nd it still will not start could you help me
Too little Information, No context, Being that I am not present too see it as well it makes it very difficult to be an actual help I am sorry man
Timing
i was told to never oil the outer surfaces of the camshaft bearings....maybe thats where my noises are coming from lol
It’s just a safety precaution on first startup, Your camshaft will be adequately oiled from the chain at throws oil from the bottom of the motor to the top into the rocker assembly and camshaft
How much gain in acceleration?
Minimal low end torque but enough to notice a difference, worth the $10 still if you ask me
I got my taotao scooter new and it had it stripped too 9:07
When i unscrewed it it was stripped
@@Tomijus yeahhh that chain tensioner is TRASH I Ordered a new one and almost stripped that one out too putting it on. Definitely not a good part at all on these bikes just be really careful with them
IT looked to me like you were torquing the shit out of that tensioner.
Yeah
Thats why its stripped out. Put a elephant on that bolt.
well you surely dont need to take off carb or engine plastics, sparkplug or even oil. :D to change the cam
I get it I shouldn’t have included that but I needed to change my oil anyways, You surely don’t need to waste your time to correct me on UA-cam when I built a four stroke 139qmb that hits 50 🤷♂️
Great job man boy do I understand the freak out... Chinese CRAP!!
One word tappets.
I simply just bought another one it was like five bucks for a whole new chain tensioner itself VMC Chinese parts The great website for factory replacement parts
Valve/ rocker tappet adjustment or tap and die to fix bolt stripped out?
Nice vid very easy to understand an I had one question I'm about to swap my head's to put the bore kit in it do you have any suggestions on what to use when I put the gaskets on should I use something like Honda bond or something for each part of the head do I need anything or just keep it dry and place the gaskets on for the bore and the head thanks for then help 👍😁
I appreciate the feedback that was my goal short simple and sweet except for the end because my camera running out of storage, But when I did my big bore kit It came with one metal gasket and one paper gasket one in between the jug and head and one in between the head and something else but I did not use any sealant of any kind because the gaskets were brand new. There was no need in my case with brand new everything and I never had any leaks.
Don't use sealant!!! It will block your oil passageway and blow your motor. If you need new gaskets just buy them its worth it.
@@halethewhale lol I wish got that comment last week it makes sense my piston got so hot after using the grey permatex I used the stuff around the base but used the guides put those in place then slide the bore and the head on the bike ran for a hour or so but like u said I think it wasn’t getting oil the piston scratch the walls and I had such a stuck wrist pin I had to cut the piston off but now the wrist pin stuck on the rod 😕 tried using the bolt trick pb blaster to get the wrist pin off to just put the bike back to stock thanks for the info definitely getting a stock base gasket
I use a small touch of grease. But don’t put it near any passages.
No to your question man don't put anything on your gaskets just make sure you torque everything to spects and as you have your bike apart make sure you put a rag where the push rod comes off the crank so that nothing falls into the engine not all the way just enough to keep that from happening then take it back out as you put it together.
All I gotta say 😂
aaaaand, that NOT A9 cam :D you can tell how the lobes drop differently
Aaaaaaaand It definitely is because I compared it to my stock cam directly next to it just like in the cover photo, y’all internet thugs know everything I got another 8 fake A9 Cams laying around if you want it bud 😂
@@davidhofinger4927 i just installed a9, lobes are thicker, that is racing cam. It has 1mm more lift and some more duration than stock but not as much as a9
It's hard to find a true a9 cam, there are ten different ones from different vendors on Amazon. I bought all my bbk (47mm head with 69mm valves, 47mm cylinder,69mm rockers) parts from Glixal, but declined the a9 at the last minute because of so many negative comments. Any leads on a true a9 performance cam?
Awful. Destroyed