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 RUclips 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
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
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
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?
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.
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
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.
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
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.
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
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
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!
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 .
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
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
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..
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
@@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?
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.
@@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.
Hi, great work. screw hole reduces contact spot. This may affect the reduction of motorcycle life. when do you plan to look at the condition of the camshaft?
How do you determine the position of the camshaft sprocket with the flats? The gear doesn't have the key so it can change slight degrees of opening of the valve.
Curious question, what would be the approximate cost difference between replacing all parts vs repairing as your video documents? For the regular guy without a machine shop we’d need to send out for repairs. Therefore, by replacing it could all be done in our own shop. Btw your work and shop are beautiful.
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 !
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.
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 RUclips 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
Awesome!! Wish I had a machine shop here in nj that could do that kind of work....props!!
I love that torque adjustable wrench
He is good.
another reason to love my 2 strokes even more
Thanks specially the last part of the video when you compared the running engines ...A++++
Ok
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
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
This dude has all the shit i keep asking for X-mas !!
😅🤣😂
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.
Ferramental apropriado conhecimento técnico ficou um excelente trabalho .
Thanks.
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?
How do I send you a head that needs the same repair. Would you do that??
Same head for same bike
Me too!?
@6:20 I blew at my phone to get the metal shavings off 🤣🤣🙈
This is some HD!! 🤯
Amazing video.
Keep up the great work! 🫡
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
Flashbacks of rebuilding my subaru ej25 lol. Heads look similar
ECXELENTE, trabajo de nivel profesional. Saludos desde Ecuador
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.
🧠👍
The camshaft bearing's?? Didn't you change?
They were fine.
I think I might try this on my 450 exc. Can I just use hand drills and a dremmel for all the milling stuff?
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
Very good your work. Keep posting videos. Greetings from Brazil.
Hi I have the same situation in the video I need to fix my head how to contact with you my ride Suzuki ltr450
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
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
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.
How much does that repair cost labor wise? Cheaper than a new head?
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
You are a genius Sir.
Ktm
Know
The
Mechanic
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.
Awesome work and beautiful bike!!!! Congratulations!!!!
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.
what year is that sxf , looks sick !
Ktm sxf 450(?) 2008-2010
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
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.
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
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
Muy buen yrabajo .profecional 👍👍👍👏👏👏un hran saludo desde chile
Thanks
Amazing!!! That's what I was looking for!!! Thank you.
Excelente trabajo !100%artesanal
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!
how much does it cost to make something
Greetings from Argentina!!.
Excelente work.!!.
You can know what material you use to make the slide bearing?.
Thank you.
Thanks.
AlMgSi0.5
Would like to know how to get a hold of you have stuff that I need done.
Excelente muy buen trabajo
Do you offer this service?
terimakasih kawan, kau telah membuka pikiran saya yang tadinya tidak tau menjadi tau
Trocou a bomba de oleo ?? Senao pode perdê.o serviço
How do you adjust the valve clearance?
Perfect!
Grand job, master!
Thanks
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 .
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
Bike for sale, Engine freshly rebuilded, Start great.
Forget to say, ...Just dont rev it too much.
🤣🤣🤣 same 💩 i was thinking 😂😂😂
Man! I love your work!
💯👍
Thanks for watching
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.
Some people are so clever,👍👍
Precision.♥️
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.
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..
Awesome job , well done.
OMG,Even without bearings!
Respect. Πολύ καλή δουλειά
Thanks.
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 ...😁
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.
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?
What grade of aluminum did you use?
AlMgSi0.5
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.
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.
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.
Brawo brawo 👍👍👍
Thanks
Knowing your standard of work , i don't even have ask if you cleaned all the oil feeds after the pump failure. 👍
of course
Did you do a squash test on the new bearings?
Johan Stephan Nel you mean the clearance check with plasigauge or thin soft solder wire?
Andrew Wilson , yes with the plastigauge. 🙂
Hi Paul, can i send heads to you to be repaired? Are you located in Europe? Regards, Maikel
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 )
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
Awesome work!!! 👏🏽👏🏽👏🏽
Hi, great work. screw hole reduces contact spot. This may affect the reduction of motorcycle life. when do you plan to look at the condition of the camshaft?
As long as there is oil in engine : )
What does this procedure cost?
Can I use this video on my channel?
Ok
@@PaulXchannel thanks
Bel lavoro, complimenti!
Grazie
Perfect 👍
凄い!ナイス!
How do you determine the position of the camshaft sprocket with the flats? The gear doesn't have the key so it can change slight degrees of opening of the valve.
Quite exactly.
At the bottom of the engine set the crankshaft to the upper position and secure with a screw.
Use a straight prism to tighten the cams.
Curious question, what would be the approximate cost difference between replacing all parts vs repairing as your video documents? For the regular guy without a machine shop we’d need to send out for repairs. Therefore, by replacing it could all be done in our own shop. Btw your work and shop are beautiful.
Thanks.
Repair of damaged cylinder head half price from new.
@@PaulXchannel On top of this, I don't think you can even get your hands on a new cylinder head for this generation of 450 SX-F.
@@Anterisix Original KTM spare parts are still available even for really old bike like 2000 model - that SX is 2007-2011 model so no problem
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
You is the best.
.
Saya indonesia 🔴⚪
Thanks
2 stroke gang
Its 4-stroke
Good video 👍👍👍👍👍
Love my 2 smoker
how much is something like that
? respect from poland
Thanks
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 !
Crazy 💪🏻
Paul esses banlançeiros deveria ser rolamentados tantos os comando de válvulas nao consigo entender esses engenheiros mecânicos projetitas..
Some one should make bearing inserts for these, quick and much easier.