Never say stuff like that, I thought I'd never spend time rebuilding 2 stroke glow engines but it has become a very fun hobby. Working my way through learning to work on all the types of IC engines, and learning how electric drive systems work too because it is the future of fast.
Great job on the valve's work.. i see a lot of people missed this important step.. it can lead to a compression leak, and a lot of bad things can happend.. i'm really" glad that you didn't missed that important step, And just a tip when you were porting the head.. i suggest you put some kind of ligthing in top of the valve's hole so you can do a more detail and precision job.. in indonesia we do the valve's work manually by hand.. my mechanic said it's more detailed and precise job.. keep up the good work my guy🔥.. sorry for the bad english..
Man, get a dykem pen on those seats before you lap them. That way you can measure the seat contact to make sure you're within tolerance. Remember that the seat-to-valve contact also serves to transfer heat from the valve to the cylinder head.
I just used water when I was done with the valve job to test the seal. I filled the ports with water and held the head up, and didn't see any water leak out. I used enamel paint on the valve seat and valve and the ring pattern clearly was ground off when i did the lapping. Is this a good enough test for valve seal? I cant see the point in using the dye because if it leaks you should be able to see the water leak through. Just in case I blew some compressed air int the ports with water in the head so it would hold water with the head upside down and didnt see any air bubbles unless it was high pressue of 80 poundsor more blown into the intake and exhaust ports.
Thank you so much man,you are very knowledgeable.im about to get my first dong fang 50cc and you are going to be my go to guy.again you are very helpful,thank you so much.
If I put a big bore kit of 80cc on my Dongfang, uni filter, roller weights at 8g, idle jet 38 and main jet 86, I weigh 220 Lbs, I'm still only going 32MPH. What am I doing wrong? I watched almost all your videos, but I guess I'm dumb when it comes to this scooter.
CRN (Chromium Nitride) coated for long service life and reduced friction to provide the ultimate protection against seat erosion, tip wear, and stem erosion (do not lap Valves)
He is trying to apply what is used in the highest performance oem engines and racing engines to a relatively low performance engine. He’s sort of on the right track but not fully. We use titanium valves in our drag race motorcycles when we have gone to a much larger diameter valve to gain mass flow and such an oversize valve in stainless would be much heavier it would require valvesprings with a lot more spring pressure on the seat and at full lift to where it would beat the shit out of the valve seat, cam lobe, lifter (when present), and all associated valve train components. Reduced valve weight (ti valves) are also used when you are rpm limited by your valve train. Reducing weight in the valve itself can, though not always, help an engine rev a little higher. However, most of the time, it’s more complicated than weight alone and factors such a cam profile (duration and intake valve closing most importantly) play a much more important role in changing an engines rev range when specifically seeking a higher rev potential. Though just being able to spin the engine higher doesn’t mean it will make more power up there. If the cylinder head can’t flow enough cfm to support the higher volumes of air demanded at those higher rpm then it is of little benefit unless for instance a dragracing situation where spinning the engine past peak hp would result in a better ET at the track due to where the rpm drops back below peak power on the shifts. There’s soooo much more to it than just dropping in a set of Ti valves and thinking you are going to gain anything. Commendable for the effort, but misleading and misinformative do a large degree. And yes you guys are right, you never lap any valves that are coated, no matter what the valve is made of. The coatings are only tenths thick (tenths in machinist lingo, that’s tenthousandths actually=.0001). The lapping compound is abrasive and will grind the coating right off. We use an uncoated valve with a freshly ground 45 to do any lapping checks when using coated valves. Lapping is only done as a check anyway, it allows you to visualize exactly where and how wide the mating is between the 45 degree angle ground on the valve and corresponding angle cut or ground on the seat. Concentricity can be confirmed by lapping after a valve job is performed. Also when checking out a used head the condition of the valve job is assessed by a quick lapping of the valves with a lapping stick. Spinning a valve (with lapping compound on the seat) with a drill attached to the stem or with tubing and a mandrel and drill is at best a half assed way to perform a valve job. Only way it will be successful is if the valve job (45 on the seat and valve) was in good condition and you are simply replacing the valves with the exact same size (diameter). If he nicked the seat when “porting” (if you want to call that porting) then he can spin that valve till the cows home and it’s not gonna grind enough of those seats for the valve job to “come in”. But again, overall he did pretty good with his explanations and video in general.
Return it. I did everything in this video and it’s a waste of time and most importantly MONEY. I got zero gain in performance, but a massive gain in valve noise!
Awesome video! But a bit too advanced for me. Can you offer good affordable tips to improve Aprilia SR 50 four stroke scooter? Would like to get 75km/h out of it, improved take-off and good uphill power. Is this possible for a reasonable price? Thanks in advance!
Hi. I hv some problems. My bike making some knocking sounds during i pull the throttle immediately. When i cruising around, it sounds like normal. I have check piston to valve clearance, deck clearance, its all in specs and more than enough. Moreover i hv skim my cylinder head and block to make sure no leak. But still making knocking sounds. Can you give me suggestions to check what?
احسنت منذو ثلاث ايام اشاهد مقاطع الفيديو في قناتك .. انها جيده .. استمر .. لدي دراجه هوندا دايدو 56 AF نفس المحرك .. اتمنا منك ان تعمل فيديو كيف تشغيل المحرك من خلال المقبض والكهربائيات 👍👍⚘
Are there any reasons to why you don't port match the exhaust hole all the way to be flush with where the crush gasket would sit? Or is it simply a matter of it being diminishing returns from a 50cc head? Great content as always, thanks for the upload!
Hey rolling wrench i got a ruckus 50 CC I need to get started again I was using the electric starter alot I guess I wore it out and now I have to kick start it and it doesn't really work well because the electric starter is what I was using before but I need to get that fixed or something it just makes humming noise an that's it When I press electric starter button not catching to the engine ..do I need to get another electric starter or what ??? please tell me why it won't start thanks take care RUCUS 50cc... OWNER...... .....KIRK SELLERS...
I didn't now how to do nothing en i look at hes video now am learning how to put a clutch the valuator the carburetor little by little you got to keep on looking at the video and learning
@@juliodiaz4493 I never was really Into fixing things until about 10 yrs ago I started watching UA-cam videos now I think I can fix anything hahaha and have from vehicles washer and dryer’s refrigerators A/C units plumbing seriously endless and your right keep going back and watching the video take your time and be patient and even take a break or wait to finish things the next day when fresh and given it some thought way I see It if others can do it why can’t I much respect for the ones taking time to record step by step and explaining it all in detail cheers
Hey so I currently have a 157qmj in my ruckus with all the bolt ons, performance cam/rocker but have a kymko super 8 150cc gy6 style motor I was thinking about swapping in because it seems more quality/performance “as is/stock” what would you do in my situation keep the gy6 157qmj or swap to the super 8 kymko??
@Rolling Wrench I just did this to my now 171 Chuckus. I couldn’t find titanium valves, mine just has standard Taidas. Man wiring in your CDI has me scared. That’s my next big task. I’m getting ambitious with the wiring and deleting the turn signals and kill switch.
Nice! It’s very simple on the cdi. Red wire is power. It gets attached to the running light so it gets power. Black to engine ground. Blue plugs into the blue wire on the stator.
@@RollingWrench 10-4. I appreciate the info. I’m excited. You guys have been super helpful every step and I just want y’all to know I really do appreciate it.
GET is much different than gy6. Only downfall is smaller displacement. The gy6 49 cc has a bolt on kit that gets you to 100cc I think you go from 4hp to 6 something The ruckus is about 5 hp, but the hp and torque is more flat. Dont know much about the Zuma 4 stroke but I am sure they are good
Great video as always, Matt! Question for you...I just finished building a 171cc gy6 for my Chinese atv, Taida 58.5mm big valve head, a12 cam, ported head myself... What exhaust pipe diameter is recommended for these big bore gy6's? I'm going to have to custom make it one way or another, but the pipe diam eludes me. I'm thinking 27mm ID....?
If you don’t do this mod on your ruckus Watching this video You have problems because this guy is the master on this showing how to do thing on your bike
I have no intention on doing any of these mods, yet I watched the entire video lol nice work!
Never say stuff like that, I thought I'd never spend time rebuilding 2 stroke glow engines but it has become a very fun hobby. Working my way through learning to work on all the types of IC engines, and learning how electric drive systems work too because it is the future of fast.
Hopefully this weekend ill have a honda ruckus im so excited to join the crew
Great job on the valve's work.. i see a lot of people missed this important step.. it can lead to a compression leak, and a lot of bad things can happend.. i'm really" glad that you didn't missed that important step, And just a tip when you were porting the head.. i suggest you put some kind of ligthing in top of the valve's hole so you can do a more detail and precision job.. in indonesia we do the valve's work manually by hand.. my mechanic said it's more detailed and precise job.. keep up the good work my guy🔥.. sorry for the bad english..
Nice!!
😛
I watch your videos too Mitch
Man, get a dykem pen on those seats before you lap them. That way you can measure the seat contact to make sure you're within tolerance. Remember that the seat-to-valve contact also serves to transfer heat from the valve to the cylinder head.
Good idea!
Dyno before and after pleasesss❤ this was a helpful and awesome video.
I wish !
I just used water when I was done with the valve job to test the seal. I filled the ports with water and held the head up, and didn't see any water leak out. I used enamel paint on the valve seat and valve and the ring pattern clearly was ground off when i did the lapping. Is this a good enough test for valve seal? I cant see the point in using the dye because if it leaks you should be able to see the water leak through. Just in case I blew some compressed air int the ports with water in the head so it would hold water with the head upside down and didnt see any air bubbles unless it was high pressue of 80 poundsor more blown into the intake and exhaust ports.
Thank you so much man,you are very knowledgeable.im about to get my first dong fang 50cc and you are going to be my go to guy.again you are very helpful,thank you so much.
are there any alternatives to the ti valves listed here? the link in decription 404ed itself :(
If I put a big bore kit of 80cc on my Dongfang, uni filter, roller weights at 8g, idle jet 38 and main jet 86, I weigh 220 Lbs, I'm still only going 32MPH. What am I doing wrong? I watched almost all your videos, but I guess I'm dumb when it comes to this scooter.
Change gearing and/or jetting? Remember stroker kit changes a lot of things.
CRN (Chromium Nitride) coated for long service life and reduced friction to provide the ultimate protection against seat erosion, tip wear, and stem erosion (do not lap Valves)
I was hoping someone would post that. Not sure why he lapped the valves.
He is trying to apply what is used in the highest performance oem engines and racing engines to a relatively low performance engine. He’s sort of on the right track but not fully. We use titanium valves in our drag race motorcycles when we have gone to a much larger diameter valve to gain mass flow and such an oversize valve in stainless would be much heavier it would require valvesprings with a lot more spring pressure on the seat and at full lift to where it would beat the shit out of the valve seat, cam lobe, lifter (when present), and all associated valve train components. Reduced valve weight (ti valves) are also used when you are rpm limited by your valve train. Reducing weight in the valve itself can, though not always, help an engine rev a little higher. However, most of the time, it’s more complicated than weight alone and factors such a cam profile (duration and intake valve closing most importantly) play a much more important role in changing an engines rev range when specifically seeking a higher rev potential. Though just being able to spin the engine higher doesn’t mean it will make more power up there. If the cylinder head can’t flow enough cfm to support the higher volumes of air demanded at those higher rpm then it is of little benefit unless for instance a dragracing situation where spinning the engine past peak hp would result in a better ET at the track due to where the rpm drops back below peak power on the shifts.
There’s soooo much more to it than just dropping in a set of Ti valves and thinking you are going to gain anything. Commendable for the effort, but misleading and misinformative do a large degree. And yes you guys are right, you never lap any valves that are coated, no matter what the valve is made of. The coatings are only tenths thick (tenths in machinist lingo, that’s tenthousandths actually=.0001). The lapping compound is abrasive and will grind the coating right off. We use an uncoated valve with a freshly ground 45 to do any lapping checks when using coated valves. Lapping is only done as a check anyway, it allows you to visualize exactly where and how wide the mating is between the 45 degree angle ground on the valve and corresponding angle cut or ground on the seat. Concentricity can be confirmed by lapping after a valve job is performed. Also when checking out a used head the condition of the valve job is assessed by a quick lapping of the valves with a lapping stick. Spinning a valve (with lapping compound on the seat) with a drill attached to the stem or with tubing and a mandrel and drill is at best a half assed way to perform a valve job. Only way it will be successful is if the valve job (45 on the seat and valve) was in good condition and you are simply replacing the valves with the exact same size (diameter). If he nicked the seat when “porting” (if you want to call that porting) then he can spin that valve till the cows home and it’s not gonna grind enough of those seats for the valve job to “come in”.
But again, overall he did pretty good with his explanations and video in general.
@@robertmason8341 so what your saying no matter the weight difference the ti valves aren’t adding much?
👍👍😁😁
Hey I jus seen da video on da metropolitan wit big bore upgrade kit 81cc jus wondering if it’ll work wit da ruckus ?
The ruckus has a totally different engine. It will not work
dobre video
Nice work Matt. Great vid! #GETLife
Thanks you dude. I appreciate the support 🙏🏻💯
Just bought a H.O cam any tips from anybody? Installing soon
Return it. I did everything in this video and it’s a waste of time and most importantly MONEY. I got zero gain in performance, but a massive gain in valve noise!
Awesome video! But a bit too advanced for me. Can you offer good affordable tips to improve Aprilia SR 50 four stroke scooter? Would like to get 75km/h out of it, improved take-off and good uphill power. Is this possible for a reasonable price?
Thanks in advance!
Is it possible to just take this to a professional. I’m sure your work is ok but this is by no means professional work
Hi. I hv some problems. My bike making some knocking sounds during i pull the throttle immediately. When i cruising around, it sounds like normal. I have check piston to valve clearance, deck clearance, its all in specs and more than enough. Moreover i hv skim my cylinder head and block to make sure no leak. But still making knocking sounds. Can you give me suggestions to check what?
İşçilikteki detayını seviyorum king 😁
I'm in the market for a ruckas and now I know why. Thanks for all the informative video's not just this one. Subscribed!!!!
احسنت منذو ثلاث ايام اشاهد مقاطع الفيديو في قناتك .. انها جيده .. استمر .. لدي دراجه هوندا دايدو 56 AF نفس المحرك .. اتمنا منك ان تعمل فيديو كيف تشغيل المحرك من خلال المقبض والكهربائيات 👍👍⚘
Are there any reasons to why you don't port match the exhaust hole all the way to be flush with where the crush gasket would sit?
Or is it simply a matter of it being diminishing returns from a 50cc head?
Great content as always, thanks for the upload!
watching from Phillippines thank you for the great idea 👍😊👍
Hi, there is this version of the engine with four valves, you can install a cylinder head on four valves on your engine, you know this
The number of this motor is - AF 55e, and the number of the motor for 4 valves is - AF 63e.
the four-valve engine af63e was intended for the domestic Japanese market for the scooter Honda Dio Z4 - AF 63.
ua-cam.com/video/76YiiA-RtY8/v-deo.htmlsi=BiFvIxrilvVyxoem
Hey rolling wrench i got a ruckus 50 CC I need to get started again I was using the electric starter alot I guess I wore it out and now I have to kick start it and it doesn't really work well because the electric starter is what I was using before but I need to get that fixed or something it just makes humming noise an that's it When I press electric starter button not catching to the engine ..do I need to get another electric starter or what ??? please tell me why it won't start thanks take care RUCUS 50cc... OWNER......
.....KIRK SELLERS...
Remove it and check for broken stuff
Matt the mad mechanic
LOL ahhh yaaa
Nice
man, i wish i lived near you, id bring you my bike so fast!
Mi to men this man work I wish I new how to do o that
Derek look at his video. educate yourself that's what I'm doing is a lot of things that I'm doing already
I didn't now how to do nothing en i look at hes video now am learning how to put a clutch the valuator the carburetor little by little you got to keep on looking at the video and learning
What I'm going to have trouble with the Big Bore Kit he's a challenge for me
@@juliodiaz4493 I never was really
Into fixing things until about 10 yrs ago I started watching UA-cam videos now I think I can fix anything hahaha and have from vehicles washer and dryer’s refrigerators A/C units plumbing seriously endless and your right keep going back and watching the video take your time and be patient and even take a break or wait to finish things the next day when fresh and given it some thought way I see It if others can do it why can’t I much respect for the ones taking time to record step by step and explaining it all in detail cheers
RUCK DOCTOR
These boring only for the 58cc?
Nope! Any engine :-)
That was an excellent video, very informative and clear
Thanks for the positive words
Do lighter valves reduce the chance of valve float
Stiffer springs is what controls less valve float
@@RollingWrench wouldn't lighter components make the springs work Les hard
@@lukassonntag3956 yes definitely. Valve float would need to be solved with heavier springs though
Hey so I currently have a 157qmj in my ruckus with all the bolt ons, performance cam/rocker but have a kymko super 8 150cc gy6 style motor I was thinking about swapping in because it seems more quality/performance “as is/stock” what would you do in my situation keep the gy6 157qmj or swap to the super 8 kymko??
The 157qmj is a bit more beat up by the way. But is it worth it to do a whole swap? Maybe bore the kymko and swap??
The Kymco engine is the better option for sure ! Much better quality
@Rolling Wrench
I just did this to my now 171 Chuckus. I couldn’t find titanium valves, mine just has standard Taidas. Man wiring in your CDI has me scared. That’s my next big task. I’m getting ambitious with the wiring and deleting the turn signals and kill switch.
Nice! It’s very simple on the cdi. Red wire is power. It gets attached to the running light so it gets power. Black to engine ground. Blue plugs into the blue wire on the stator.
@@RollingWrench
10-4. I appreciate the info. I’m excited. You guys have been super helpful every step and I just want y’all to know I really do appreciate it.
Turbo turbo turbo waiting since you first leaked iy
I know dude! I’m so excited for it!
That look like the clutch spring the same meguenisime
Definitely similar
When does the valve adjustment video come out?
In the next couple of weeks :-) waiting on a sponsor :-)
Awsome
this is the best guide on youtube,tq so much.
Thanks for the support 🙏🏻💯
Хорошая работа 👍
⭐⭐⭐⭐⭐
I'd like to see this done to a Yamaha 4-stroke 50cc, as the Wreckus looks too much like a proprietary POS GY6.
The GY6 is a Chinese copy of the GET motor design.
GET is much different than gy6. Only downfall is smaller displacement.
The gy6 49 cc has a bolt on kit that gets you to 100cc I think you go from 4hp to 6 something
The ruckus is about 5 hp, but the hp and torque is more flat.
Dont know much about the Zuma 4 stroke but I am sure they are good
Great video as always, Matt! Question for you...I just finished building a 171cc gy6 for my Chinese atv, Taida 58.5mm big valve head, a12 cam, ported head myself...
What exhaust pipe diameter is recommended for these big bore gy6's? I'm going to have to custom make it one way or another, but the pipe diam eludes me. I'm thinking 27mm ID....?
If you don’t do this mod on your ruckus Watching this video You have problems because this guy is the master on this showing how to do thing on your bike
Thank you dude
Bull. I did all of it, and it didn’t do anything but add more valve train noise. Waste of money.