Spectacular high - precision reconstruction based on excellent cutting machines. Also when using simple tools, which proves professionalism! Congratulations :).
That the slide metal bearing should be made, oil gutter on it. Same problem here on my honda, a factory failure design. Thanks for the video it's so inspiring.
What pisses me off about most people is that when I say that a head can be fixed they tune me their bull ,and here this guy is doing what I've been trying to do for years if they just would alow me to show that a blown head can be fixed ,thx mate who ever you are
It is amazing what you can do if you believe you can. My customers call me a wizard because i do what they didn't think possible. It not my knowledge that is great it is their's that is lacking. It all works out fine, i get the mental exercise working out how to do it and they get a repair.😊
@@chrisstephens6673 I bought a second hand head I posted the vid on TH-cam yz250f knock or something , the guy would not allow me to buy the head from him unless he rebuild my motor so I saw no other way out and allowed it ,so when I popped the cams , the head was seized I barely did 5 hours on it , so the guy went and popped my cams and cam caps onto a blown head and mean I'm pissed , but the problem is you can't find people around here that is willing to do such jobs , because it's labour and time unless it's their own
Skill level is out of this world man have scrapped heads in better nick, hard to find this sort of guy that CAN mankind is loosing this sort of we can repair anything mindset, absolutely beautiful engineering, where are you at
Awsome job. I have built/fixed alot of motors/race mtrs mostly bikes/atvs I really like 2 see smeone that no's how 2 do that type of in depth mechanical work. 🛠 wrench on
Moped 150 on my country had same bad design like that. Some small garage mods changed sitting into bearing, and change rocker arm into roller rocker arm
must be very difficult to find spare parts in Indonesia. the process of fixing it is also a bit complicated. because all that is worn has to be lathe again. installation is also very thorough, good job. Me from indonesia
Have you ever tried cracking your bearing sleeves on an expanding mandrel as they commonly do on rods for marine engines? Just curious. I did it one time and had to finish line home the journals for the clearance I was shooting for. Next time I will finish note closer to size. I left quite a bit to take out not knowing if deformation may have been as issue. I held the inserts with pins. Used stud and bearing mount to glue them in place with shims on the cam journals for preload while clamping up. Turned out very nicely. Older Honda trail bike.
Très belle réalisation de fraisage/ tournage, mais franchement le coup du papier émérie.sur le plan de joint de culasse, c'est dégueulasse.....un léger surfaçage aurait été préférable.....mais bravo quand même......belle réparation
Paul how did the id of the bearing races stay proper when you slit it with that saw you removed part of the circle cant wrap my head around how its still round not oval once the cam tower is mated back? just curious.
Excelent work, but i think the bronze SAE 64 is better than aluminum for the cmashaft, for the hardness and friction coeficient, maybe the nodular iron 5506 because it contains nudules of grafito and it is a lubricant Sorry for my english
Thanks. Cylinder head is from aluminium alloy - for camshaft good from factory. My aluminium is better. I use his on making high compression pistons. It work well.
Great job once again!! I noticed there is no keyway on the cams. Would there be any benefit in advancing the inlet cam? Or has KTM already optimised that?
Awesome work, but 2 things. You could have use a press in dowel pin and a counter sunk hole drilled in the bushing. Second thing, why don't you use bronze? If there's ever a disruption in oil pressure the cams or the will not be damaged because bronze can run without oil for a while
boa tarde eu tenho uma sx-f 450 2008 e ultimamente sempre que paro no fim de uma trilha o motor desliga sabe me indicar de onde possa estar o problema ? motor trabalha bem e levou filtro de ar novo e vela nova e continua igual sou dos açores e não temos oficinas nesta ilha para motos , se poder dar uma dica agradecia muito obrigado .
Have them made from bronze. Then you'll never have this failure again. Also use press in dowel pins instead of screws. Those screws could come lose because lock tight gets soft around 200 degrees..
Hey Paul X! I have the exact Problem with my Beta RR400 Head! It is currently out of stock worldwide, and no company I contacted can repair it! Can you help me out? THX!
Can you give more information? How many hours were on the bike? You mention oil starvation as the cause but what kind of maintenance was done on this bike? 5-10 hour oil changes? 10-15 hour oil changes? Thanks
Dude can you help me, i have kx250f 2005 and i heard that bike is a full of a shit in head, and if i buy head 2007 model i dont have a problem with valve, is that True?
Good job! In your opinion, is KTM stronger than yamaha? I used to have YZ250F 08, and looking on this photage - i have idea that this mechanism looks stronger ... Or they are more or less the same ? Thanks
Is this something you would do again if I pay I have a 08 ktm 505 SX-F I would love to have this done to do you have a shop or something like that to were I can contact your business thanks in advance awesome work also
@@PaulXchannel Thanks for replay and very good clean and professional repair. I think that on all 4 stroke bikes there must be the oil temperature sensor.
I hate a brand which does not care about the lubrication of the cylinder head. All the damage is coming insufficient pressure oil for an aluminium bearing. And bad surface treatment of the steel of the rockers.
@@lukeanderson5781 I'm afraid It's a bit more subtle than that. Ball and roller bearings do not need high pressure oil. The aluminium plain bearings yes so the oil pump has to be big enough to give a pressure somewhere the 2.5 to 5.5 kg/cm2 at the head whatever the RPM, even the lowest ones. The dirt bikes spend a lot of time at low RPM, or with big variations of RPM. If the oil pump is a bit too small the plain bearings will first suffer at low RPM wearing at high rate, that''s probably the problem of the KTM when you see the size of the pump. The problem is recurrent on various KTM models. Morality: or you put the camshaft on ball bearings so there are no plain bearings in the engine (the best solution but sometimes complicated) and the oil pump has for main purpose the cooling of the internal parts like the head and the piston. Or you put a beefy pump giving enough pressure at idle even with a low oil level or a dirty filter.
If i remember Honda motorcycles from at least as far back as the early 70's ran their cams directly in the head with no replaceable bearing. And suffered because of it.😉
@@chrisstephens6673 They only suffered when regular oil and filter changes were neglected or if stiffer valve springs were used in conjunction with a more radical camshaft.
@@johncrowley5612 not so, we had several bikes in that suffered and they were perfectly standard and regularly maintained, mainly twins i seem to recall 250's but it was over 40 years ago.
If only they made white metal bearing caps like most car crank shafts . Could replace them easy and linish the cams . I see this failure often . The last bike I purchased with very similar issue the cam caps were crazy tight . Maybe 30-40nm !
@@PaulXchannel I have a Beta 430 4 stroke with the same problem. I don't know why this happened - the oil pump is working and tested, the engine oil filter was without any dirt, the oil pump gears are not broken. Got the bike and rode it just 10 hours. Changed the oil with fuchs 10w60 full synthethic and I have had the same bike and rode it with the same oil so I don't think it is oil related. My scoring is not as much, but still. What could have caused this problem, because I don't want to repair it and the same thing to happen.
@@CatLanner Hi . Low oil pressure ?! The oil must be injected within 10 seconds on the camshafts. The screws of camshaft holders very strongly tightened ?! Standard - 12-14 Nm Cheap filter ? Big problem !!! Recent 2 repairs - cheap filter. It is little permeable, or is soft and pulls it in.
@@PaulXchannel Are you talking about cheap oil filter? I use hiflo Hf631 which I think is good quality. This couldn't have happened from the fuchs 10w60 oil right? No chances?
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Should be made with replaceable bearing inserts from the factory. Awesome repair on the head.
Spectacular high - precision reconstruction based on excellent cutting machines. Also when using simple tools, which proves professionalism! Congratulations :).
Thanks
how much does it coet ot make something
These videos make me happy that I own a 2stroke
That the slide metal bearing should be made, oil gutter on it. Same problem here on my honda, a factory failure design. Thanks for the video it's so inspiring.
Ok
Watch the video from 5:10- an internal grooving tool is being used to cut an oil groove in the bearing.
another reason to love my 2 strokes even more
What pisses me off about most people is that when I say that a head can be fixed they tune me their bull ,and here this guy is doing what I've been trying to do for years if they just would alow me to show that a blown head can be fixed ,thx mate who ever you are
In the end, it is possible :)
@@PaulXchannel that's what I said ... And I will
Good luck at work.
It is amazing what you can do if you believe you can. My customers call me a wizard because i do what they didn't think possible. It not my knowledge that is great it is their's that is lacking. It all works out fine, i get the mental exercise working out how to do it and they get a repair.😊
@@chrisstephens6673 I bought a second hand head I posted the vid on TH-cam yz250f knock or something , the guy would not allow me to buy the head from him unless he rebuild my motor so I saw no other way out and allowed it ,so when I popped the cams , the head was seized I barely did 5 hours on it , so the guy went and popped my cams and cam caps onto a blown head and mean I'm pissed , but the problem is you can't find people around here that is willing to do such jobs , because it's labour and time unless it's their own
I love that torque adjustable wrench
He is good.
Awesome!! Wish I had a machine shop here in nj that could do that kind of work....props!!
Thanks specially the last part of the video when you compared the running engines ...A++++
Ok
This dude has all the shit i keep asking for X-mas !!
😅🤣😂
Skill level is out of this world man have scrapped heads in better nick, hard to find this sort of guy that CAN mankind is loosing this sort of we can repair anything mindset, absolutely beautiful engineering, where are you at
Thanks
Awsome job. I have built/fixed alot of motors/race mtrs mostly bikes/atvs I really like 2 see smeone that no's how 2 do that type of in depth mechanical work. 🛠 wrench on
Thanks
Flashbacks of rebuilding my subaru ej25 lol. Heads look similar
Oil pump failure? Guessing the bottom end ain't going to be any prettier? See similar every day but on aero engines. You made nice job of it.
Thanks.
The back side of the intake profile is insane. I have been around automotive race engines my whole life and have never seen a lob profile like that
How do I send you a head that needs the same repair. Would you do that??
Same head for same bike
Me too!?
Was there a permanent fix to the oil migration in those years? I don't think the other engine designs had any of these problems.
Ktm
Know
The
Mechanic
Moped 150 on my country had same bad design like that. Some small garage mods changed sitting into bearing, and change rocker arm into roller rocker arm
many do not clean the 2 or 3 filters in the engines or even pull them for that matter. they get clogged and voila. or the oil pump.
Oil pumps
The camshaft bearing's?? Didn't you change?
They were fine.
Ferramental apropriado conhecimento técnico ficou um excelente trabalho .
Thanks.
You are a genius Sir.
@6:20 I blew at my phone to get the metal shavings off 🤣🤣🙈
This is some HD!! 🤯
Amazing video.
Keep up the great work! 🫡
must be very difficult to find spare parts in Indonesia. the process of fixing it is also a bit complicated. because all that is worn has to be lathe again. installation is also very thorough, good job.
Me from indonesia
Thanks
Hi I have the same situation in the video I need to fix my head how to contact with you my ride Suzuki ltr450
Have you ever tried cracking your bearing sleeves on an expanding mandrel as they commonly do on rods for marine engines? Just curious. I did it one time and had to finish line home the journals for the clearance I was shooting for. Next time I will finish note closer to size. I left quite a bit to take out not knowing if deformation may have been as issue. I held the inserts with pins. Used stud and bearing mount to glue them in place with shims on the cam journals for preload while clamping up. Turned out very nicely. Older Honda trail bike.
🧠👍
Très belle réalisation de fraisage/ tournage, mais franchement le coup du papier émérie.sur le plan de joint de culasse, c'est dégueulasse.....un léger surfaçage aurait été préférable.....mais bravo quand même......belle réparation
How much do you charge
4 strokes cool and fun when they work. only pain if they brake. 30 min piston swap on 2 stoke 2 days 4 stroke.. to much pain in the ass.
Paul how did the id of the bearing races stay proper when you slit it with that saw you removed part of the circle cant wrap my head around how its still round not oval once the cam tower is mated back? just curious.
nevermind i see how you did it! you cut it off center
Excelent work, but i think the bronze SAE 64 is better than aluminum for the cmashaft, for the hardness and friction coeficient, maybe the nodular iron 5506 because it contains nudules of grafito and it is a lubricant
Sorry for my english
Thanks.
Cylinder head is from aluminium alloy - for camshaft good from factory.
My aluminium is better.
I use his on making high compression pistons.
It work well.
Great job once again!! I noticed there is no keyway on the cams. Would there be any benefit in advancing the inlet cam? Or has KTM already optimised that?
Very good your work. Keep posting videos. Greetings from Brazil.
I think I might try this on my 450 exc. Can I just use hand drills and a dremmel for all the milling stuff?
How much does that repair cost labor wise? Cheaper than a new head?
Awesome work, but 2 things. You could have use a press in dowel pin and a counter sunk hole drilled in the bushing.
Second thing, why don't you use bronze? If there's ever a disruption in oil pressure the cams or the will not be damaged because bronze can run without oil for a while
When I have the screw I can mill a hole - it is strongly.
Bronze is a problem - different thermal expansion from the aluminum head.
ECXELENTE, trabajo de nivel profesional. Saludos desde Ecuador
Some people are so clever,👍👍
Precision.♥️
Amazing!!! That's what I was looking for!!! Thank you.
Excelente muy buen trabajo
how much does it cost to make something
Awesome work and beautiful bike!!!! Congratulations!!!!
boa tarde eu tenho uma sx-f 450 2008 e ultimamente sempre que paro no fim de uma trilha o motor desliga sabe me indicar de onde possa estar o problema ?
motor trabalha bem e levou filtro de ar novo e vela nova e continua igual sou dos açores e não temos oficinas nesta ilha para motos , se poder dar uma dica agradecia muito obrigado .
How much did the machine shop service cost? Had to be close to what the new head would cost. Beautiful work!
Thanks.
Half price.
Paul X thanks for the response.👍🏻
Did you judt put old bearings on new camshaft???
They aren't old.
Excelente trabajo !100%artesanal
What aluminum stock did you use and what did you boar the head to and what was your ID and OD on your bearing if you don’t mind me asking
What year is this engine? I never knew ktm had a twin cam 450. 450 has been a sohc for many years now.
This model 2007-2011
terimakasih kawan, kau telah membuka pikiran saya yang tadinya tidak tau menjadi tau
2 stroke gang
Its 4-stroke
how much have u payd for the modifications, I mean resurfacing the camshaft seats and the homade sliding bearings. If it last great reparation…..
Have them made from bronze. Then you'll never have this failure again. Also use press in dowel pins instead of screws. Those screws could come lose because lock tight gets soft around 200 degrees..
Trocou a bomba de oleo ?? Senao pode perdê.o serviço
Не верится, что оно будет ездить с этими отверстиями под болты во вкладышах, но выглядит красиво
Thanks.
The holes aren't problem.
Don't worry - it work well.
Love my 2 smoker
Hey Paul X! I have the exact Problem with my Beta RR400 Head! It is currently out of stock worldwide, and no company I contacted can repair it! Can you help me out? THX!
Do you offer this service?
OMG,Even without bearings!
Perfect!
Grand job, master!
Thanks
Muy buen yrabajo .profecional 👍👍👍👏👏👏un hran saludo desde chile
Thanks
Greetings from Argentina!!.
Excelente work.!!.
You can know what material you use to make the slide bearing?.
Thank you.
Thanks.
AlMgSi0.5
Awesome job , well done.
Knowing your standard of work , i don't even have ask if you cleaned all the oil feeds after the pump failure. 👍
of course
How do you adjust the valve clearance?
Can you give more information? How many hours were on the bike? You mention oil starvation as the cause but what kind of maintenance was done on this bike? 5-10 hour oil changes? 10-15 hour oil changes? Thanks
I don't have detail information.
what year is that sxf , looks sick !
Ktm sxf 450(?) 2008-2010
Dude can you help me, i have kx250f 2005 and i heard that bike is a full of a shit in head, and if i buy head 2007 model i dont have a problem with valve, is that True?
Hi. Sorry, I don't know the differences.
Would like to know how to get a hold of you have stuff that I need done.
Respect. Πολύ καλή δουλειά
Thanks.
Good job!
In your opinion, is KTM stronger than yamaha? I used to have YZ250F 08, and looking on this photage - i have idea that this mechanism looks stronger ...
Or they are more or less the same ? Thanks
I don't know which brand is stronger.
Perfect 👍
What grade of aluminum did you use?
AlMgSi0.5
Not quite sure what "high performance aluminum" is, but I doubt it gave this engine more HP 🙄
This is thought to mean that this aluminum will last a long time. I use it to make pistons for RC engines that spin over 30,000 rpm
Is this something you would do again if I pay I have a 08 ktm 505 SX-F I would love to have this done to do you have a shop or something like that to were I can contact your business thanks in advance awesome work also
Thanks but I do not provide this service publicly
Man! I love your work!
💯👍
Thanks for watching
Hi paul , i have an motocross ktm 450 sxf 2008 ,you can tell me about position of distribution thanks you!
The camshafts timing?
@@PaulXchannel timing drive
Balancer gear and double gear w.cpl
From right side on cover is inbus screw.
(at the pump)
Remove the screw. Then you will see the position. And set the position of balanser.
@@PaulXchannel i hope it help me i'll be back a message thanks you ! I from romania ...😁
Some one should make bearing inserts for these, quick and much easier.
Paul esses banlançeiros deveria ser rolamentados tantos os comando de válvulas nao consigo entender esses engenheiros mecânicos projetitas..
Good video 👍👍👍👍👍
I wonder what caused that damage, was lack of lubrication, overheating or a bad designed project?
Hi damaged pumps.
@@PaulXchannel Thanks for replay and very good clean and professional repair.
I think that on all 4 stroke bikes there must be the oil temperature sensor.
@@billadmond9450 That would have been good.
And often people that dont torque the cam caps down correct ( usually over torqued )
Brawo brawo 👍👍👍
Thanks
I hate a brand which does not care about the lubrication of the cylinder head. All the damage is coming insufficient pressure oil for an aluminium bearing. And bad surface treatment of the steel of the rockers.
It probably ran out of oil and took out all the plain bearings first. Roller/ball bearing crank doesn't need much oil.
@@lukeanderson5781 I'm afraid It's a bit more subtle than that.
Ball and roller bearings do not need high pressure oil. The aluminium plain bearings yes so the oil pump has to be big enough to give a pressure somewhere the 2.5 to 5.5 kg/cm2 at the head whatever the RPM, even the lowest ones. The dirt bikes spend a lot of time at low RPM, or with big variations of RPM.
If the oil pump is a bit too small the plain bearings will first suffer at low RPM wearing at high rate, that''s probably the problem of the KTM when you see the size of the pump. The problem is recurrent on various KTM models.
Morality: or you put the camshaft on ball bearings so there are no plain bearings in the engine (the best solution but sometimes complicated) and the oil pump has for main purpose the cooling of the internal parts like the head and the piston.
Or you put a beefy pump giving enough pressure at idle even with a low oil level or a dirty filter.
You is the best.
.
Saya indonesia 🔴⚪
Thanks
What does this procedure cost?
Crazy 💪🏻
Awesome work!!! 👏🏽👏🏽👏🏽
Are there no cam bearing shells in this engine?
no
No.Mostly not.Even in cars.
If i remember Honda motorcycles from at least as far back as the early 70's ran their cams directly in the head with no replaceable bearing. And suffered because of it.😉
@@chrisstephens6673 They only suffered when regular oil and filter changes were neglected or if stiffer valve springs were used in conjunction with a more radical camshaft.
@@johncrowley5612 not so, we had several bikes in that suffered and they were perfectly standard and regularly maintained, mainly twins i seem to recall 250's but it was over 40 years ago.
Now i found out that ktm head is hard to repair than other motorcycle brand
Bel lavoro, complimenti!
Grazie
If only they made white metal bearing caps like most car crank shafts . Could replace them easy and linish the cams . I see this failure often . The last bike I purchased with very similar issue the cam caps were crazy tight . Maybe 30-40nm !
why aluminum? why not bronze? so much work for nothing.pity.
My 505 has the same issue. Will you machine heads if they are sent to you?
@@PaulXchannel I have a Beta 430 4 stroke with the same problem. I don't know why this happened - the oil pump is working and tested, the engine oil filter was without any dirt, the oil pump gears are not broken. Got the bike and rode it just 10 hours. Changed the oil with fuchs 10w60 full synthethic and I have had the same bike and rode it with the same oil so I don't think it is oil related. My scoring is not as much, but still. What could have caused this problem, because I don't want to repair it and the same thing to happen.
@@CatLanner Hi . Low oil pressure ?!
The oil must be injected within 10 seconds on the camshafts.
The screws of camshaft holders very strongly tightened ?!
Standard - 12-14 Nm
Cheap filter ? Big problem !!!
Recent 2 repairs - cheap filter.
It is little permeable, or is soft and pulls it in.
@@PaulXchannel Are you talking about cheap oil filter? I use hiflo Hf631 which I think is good quality. This couldn't have happened from the fuchs 10w60 oil right? No chances?
@@CatLanner Hiflo is good.
I use Motul 7100 is best of.
@@PaulXchannel what I mean is that for 10 hours with fuchs 10w60 it shouldn't be possible to damage cylinder head?
Hi Paul, can i send heads to you to be repaired? Are you located in Europe? Regards, Maikel
Why did it happen in the first place
Oil pumps K.O.
Nice job
Hi paul, im from indonesia
How to setting clearance valve ktm sxf 450? There was no shim?
The pads are there but not in my video.
The head is without valves.
@@PaulXchannel thanks paul
hello if I send you my cylinder head you would do the same thing if yes at what price thank you it would save my life
Que buen trabajo de tapa o culata
Nice job: Did you do Mods to improve oil flow to cams and finger followers?
Hi. Just new pums. See another video about pumps. Thank you.
Can I use this video on my channel?
Ok
@@PaulXchannel thanks