@@nickopedia5669 hold up. I do alot of my own fabrication and machining. Even cnc and 3D print some parts. But im a full fledged mechanic because i am hired to repair powersports and not to do machine work or cnc parts
Rebuilt the young fellers yzf250 twice. First time it dropped a valve & destroyed the piston. Second time it dropped a valve & destroyed the head & the piston. Got rid of it & he got a ktm, no more problems.
Nice work. I'd have used a brass sleeve and done all 5. A common modification on race engines with high lift and long duration cam profiles. But it must feel good working on something well engineered instead of a Harley. Although they likely keep you shop busy
Jste šikovný to je vidět, jen to futro jen zalepit bez přesahu s tím mám špatné zkušenosti, dal bych tam přesah 4 stovky a byl by klid,takhle aby člověk trnul hrůzou co to udělá po ohřátí, ale jinak pěkná robota😉👍
Paul have you ever considered going down tapered and then lock it on top with a screw to secure it but outside tapered like a ball pen the inside is normal but the outside is tapered inwards and with a locking screw both sides or something ,I am getting my head fixed here in Africa at dirtboyz on Instagram they're really good apparently they said my head could be fixable so I'm sending it ,man I wish I could be there just to watch or help them ,I don't know what's wrong with me dirt bikes is a bad habit for me I'll never grow up!lol
Você é um excelente profissional e tem uma excelente estrutura e ferramental adequadro ,paz e paciência longevidade a sua pessoa e aos seus negócios , cesão motos (Brasil Belo Horizonte Minas Gerais ) .
This is exactly what I need done to my head! How to I find a machine shop that will do it? I try to explain to them what I need done and it’s like I’m speaking a different language
but they do? Well maybe you could get away with it if you are just changing out the valves and not repairing anything, but the service manual says to always re-cut the seats so the valves can wear in properly. At the same time, don't even bother with replacing the valves if you're not going to cut the seats, just clean them of deposits and remember which one goes where. AND NEVER LAP THEM. they are usually coated on these high performance engines.
Unless this engine is going to be used for low speed commuting, then the decision to use Loctite to keep the sleeve in place is fatally flawed. The sleeve should have been shrunk into the head, with the head heated to about 450 degrees in an oven , and after cooling the inner face which would have been machined smaller than the diameter of the valve cup, would be machined to clearance size. In that way, the machined sleeve will stay in place even at racing speeds. j
@NickoLps No, it works at probably 5000 strokes per minute, These engines definitely rev past 10,000 rpm. @Anthony Williams this is literally what loctite retaining compound is meant for, and actually much more severe cases as well. it will work without a problem.
I assume you’ve seen many cylinder heads on dirt bikes !! So maybe you could explain to me I have a 2012 yz450 and under the valve spring seats they have an X machined into the head but only on 3 of the 4 valves have it . Why ??
Mind blowing , AMAZING i like your style do you work in this field or? one day I hope to be able to buy some tools like these and repair my engines myself ,do you do it as a hobby or do you have a workshop? if you hire to let me know , I would learn so much from you and I like that you do it with passion I am from Romania (Timisoara) maybe one day I would visit you I want you to visit Slovakia and maybe I can stop by you if you would be interested to drink a beer and talk. All the best I wish you PS: and stay safe from this virus
Hi. Thank you very much . These repairs are a hobby and help for our moto and cycling community.This weekend I will add a new video about grinding damaged camshafts on my home device. I hope you will like the new moto intro.
@@PaulXchannel I wanted to write the same :D, but checked the comments and saw the same thoughts only different country :D. Its really nice you help your mx and cyclists communities. Your videos is great!
The only thing I may have done differently is, I would have made the sleeve a bit more of an interference fit, heated the head up in an oven, put the sleeve on dry ice and then fitted it. I am not keen on the loctite idea, but that is just me
loctite 638 isn't a regular threadlocker. It's a permanent retaining compound, and I would trust it far more than a shrink fit on such a thin-wall aluminum piece. A shrink fit is only as strong as the weakest component in it.
Paul X i got a speedi sleeve for my crankshaft its a 25mm shaft & a 25mm sleeve does that sound write to you has it looks like a tight fit but haven't put it on yet just tested it up against it for now buddy ? ? ?
Not if it's your bike and you're doing it cause you like machining. A decent condition used head is usually $400-$500, vs maybe 8 hours relaxing in the shop (and I'm a novice, this guy probably spent less than 5 hours, with 2-3 hours of that being setup)
Thats last resort. It would cost you as much to buy a head as to pay someone to do that much work. Also thers a chance of that sleeve failing under heat and high rpm.
You're real mechanic. You repair damaged part, not replace it.
Thanks for your share
Thanks .
i think what you're looking for is a machinist. A mechanic replaces parts, not do precise machining to within a thousandth of an inch.
Machinist. Not mechanic
@@nickopedia5669 hold up. I do alot of my own fabrication and machining. Even cnc and 3D print some parts. But im a full fledged mechanic because i am hired to repair powersports and not to do machine work or cnc parts
Beautifully filmed and edited. Up to the Allen Millyard standards
Thanks
@@PaulXchannel ò
With the right equipment, one can do amazing work. The value here is the knowledge of the equipment.
The idea to re-sleeve is pretty nifty too.
Easy to watch but hard to by myself. Great job bro 👍. From Indonesia with love ✌
Asiyappp
Imagine, i have all of these tools in my garage on this covid quarantine.
I will enjoy every single day in my garage
Love it!
:)
@@PaulXchannel where are you come from Paul X?
I can now say I've witnessed GREAT.
Keep up the good work
Cheers mate , I’m dealing with the EXACT SAME situation on number 2 intake valve at the moment , your video saved my bacon
That is state of art mechanic. Thumbs up !
It is a real pleasure to see you work. Congratulations
Thanks .
This requires a very high technique, great😊👍👍👍
Congratulations friend. Beautiful work, greetings here from Brazil
Thanks
What u do is a work of art..... above that.... u are a work of art.... damn damn damn nice man👍👍👍👍
Thanks for watching.
@@PaulXchannel thanks.... love this stuff... this is not an ass who does something.... u know what u are doing... so nice to watch😘
Rebuilt the young fellers yzf250 twice. First time it dropped a valve & destroyed the piston. Second time it dropped a valve & destroyed the head & the piston. Got rid of it & he got a ktm, no more problems.
Ktm is OK.
Nice work. I'd have used a brass sleeve and done all 5. A common modification on race engines with high lift and long duration cam profiles.
But it must feel good working on something well engineered instead of a Harley. Although they likely keep you shop busy
Thanks.
Aluminum is not a problem.
I use it with a higher Si content.
Modern devices and instruments. Precise repair performance. Do the valves have an identical through/working surface? Congratulations :).
Thanks .
All is ok.
Thank you 😀
Well Done Thank You had A YZ-F 450 & YZ- 250 now put roller bearings In That Head and you will really built something......
Thanks
He's a motorcycle surgeon!!! Awesome...
I lavori che fai non li fanno in molti meccanici, complimenti
Thanks
Molto molto bravo....congratulation from Italy.
Jste šikovný to je vidět, jen to futro jen zalepit bez přesahu s tím mám špatné zkušenosti, dal bych tam přesah 4 stovky a byl by klid,takhle aby člověk trnul hrůzou co to udělá po ohřátí, ale jinak pěkná robota😉👍
I would like to work for this guy just the experience and skills I'll learn will be enough pay for me
Thank you for the compliment.
Paul have you ever considered going down tapered and then lock it on top with a screw to secure it but outside tapered like a ball pen the inside is normal but the outside is tapered inwards and with a locking screw both sides or something ,I am getting my head fixed here in Africa at dirtboyz on Instagram they're really good apparently they said my head could be fixable so I'm sending it ,man I wish I could be there just to watch or help them ,I don't know what's wrong with me dirt bikes is a bad habit for me I'll never grow up!lol
@@DisruptiveUnicorn98k Little space for this repair in the cylinder head.
hi, you are doing a really great job, congratulations. I am very administrative about your work, and the quality. keep it up you are the best 👌💪💪💪
Thanks for watching.
Você é um excelente profissional e tem uma excelente estrutura e ferramental adequadro ,paz e paciência longevidade a sua pessoa e aos seus negócios , cesão motos (Brasil Belo Horizonte Minas Gerais ) .
Thank you very much.
mazing my man your a boss of dirt bike !!!!!!!!!!!!!!!!!!!!!!!!!
Thanks
This is exactly what I need done to my head! How to I find a machine shop that will do it? I try to explain to them what I need done and it’s like I’m speaking a different language
Very nice end clean work, good job bro👏👏👏👏👏
Thanks
Nice. Where are you at? If you’re ever looking for a new set of hands I’ll come work doing this!
Nice videos mate 👍🏻
Thanks
Hi! I love your work man!😉 Just have a question. Why did you made the sleeve when you could easily machine a bigger lifter?
I tried to do a lifter but it wasn't good.
He broke down.
I love your work man.
New sub here your work is truly impressive
Yeah U know ya what your doing, been around for a while easy 2 tell.
Tremendamente profecional 👍👍👍👍👍👍
Where are you located.
Perfect!
Grand job, Very good
bello, ma non fai alesaggio alle sedi valvole??
I knew it!!! I knew it was bullshit when my mechanic said that the seats needed to be cut to match the new valves
but they do?
Well maybe you could get away with it if you are just changing out the valves and not repairing anything, but the service manual says to always re-cut the seats so the valves can wear in properly. At the same time, don't even bother with replacing the valves if you're not going to cut the seats, just clean them of deposits and remember which one goes where.
AND NEVER LAP THEM. they are usually coated on these high performance engines.
I think ur mechanic was right🙈🙈
You are a master my Bro🔝🙏
Thanks
Good job bud new cylinder head is only 700$
fantastic work. But in a matter of costs, considering all the work, is it cheaper than buying a new cylinder head?
Thanks.
Is it cheaper - 50e.
Teach me your ways!!
Do you still do that kind of work?
You are genius mister 😁
Thanks
Unless this engine is going to be used for low speed commuting, then the decision to use Loctite to keep the sleeve in place is fatally flawed. The sleeve should have been shrunk into the head, with the head heated to about 450 degrees in an oven , and after cooling the inner face which would have been machined smaller than the diameter of the valve cup, would be machined to clearance size. In that way, the machined sleeve will stay in place even at racing speeds. j
Do not worry. It works well.
The glue is a bit dicy even for me ,but if he is comfortable with it ,then it means he has done it before and that it will work and last.
@@PaulXchannel I appreciate that somebody has the balls to try this stuff. It would be very interesting to get an occasional follow up video.
@@schnecks2180 Don't worry it still works fine.
@NickoLps No, it works at probably 5000 strokes per minute, These engines definitely rev past 10,000 rpm.
@Anthony Williams
this is literally what loctite retaining compound is meant for, and actually much more severe cases as well. it will work without a problem.
Nice repair! Where is your shop located?
I assume you’ve seen many cylinder heads on dirt bikes !! So maybe you could explain to me I have a 2012 yz450 and under the valve spring seats they have an X machined into the head but only on 3 of the 4 valves have it . Why ??
I don't know.
Parabéns sou do Brasil parabéns pelo trabalho
obrigado
Mind blowing , AMAZING i like your style do you work in this field or? one day I hope to be able to buy some tools like these and repair my engines myself ,do you do it as a hobby or do you have a workshop?
if you hire to let me know ,
I would learn so much from you and I like that you do it with passion
I am from Romania (Timisoara) maybe one day I would visit you I want you to visit Slovakia and maybe I can stop by you if you would be interested to drink a beer and talk.
All the best I wish you
PS:
and stay safe from this virus
Hi. Thank you very much .
These repairs are a hobby and help for our moto and cycling community.This weekend I will add a new video about grinding damaged camshafts on my home device. I hope you will like the new moto intro.
@@PaulXchannel I wanted to write the same :D, but checked the comments and saw the same thoughts only different country :D. Its really nice you help your mx and cyclists communities. Your videos is great!
@@mxsilute329 Thanks
Amazing skill and tools
Thanks
👍👍👍жалко что у меня никогда не будет такого оборудования
Nice work!
excelentt thanks !
Hi, have I ever used KMPI or Psychic valves?
How much would you charge to do mine if I ship it to you?
Trabalho espetacular. Parabéns.
Ok
Um trabalho muito de mestre mesmo
What broke the valves lifter in the 1st place
Tight camshaft holders.
Can this broken head engine
The only thing I may have done differently is, I would have made the sleeve a bit more of an interference fit, heated the head up in an oven, put the sleeve on dry ice and then fitted it.
I am not keen on the loctite idea, but that is just me
Thanks.
This glue Loctite is awesome .
My long-standing problems are over with him.
Same valve configuration as original Fzr 750
loctite 638 isn't a regular threadlocker.
It's a permanent retaining compound, and I would trust it far more than a shrink fit on such a thin-wall aluminum piece. A shrink fit is only as strong as the weakest component in it.
First time to see! 5 valvesg? How it works?
Well
Simple. 3 inlet and 2 exhaust
Wow nice
May I ask, sir. to replace the damaged valve lifter hole, can I use iron pipes?
use aluminum with a higher silicon content
@@PaulXchannel Does duralium contain silicone?
Yes
@@PaulXchannel Will using thread lock not be released when the engine is on? I had the same thing to fix as you did
Man great work but would it be cheaper to buy a new head ?
Thanks. Repairing this head was not expensive.
i dunno....it looked pretty good to me.... i think i would have tried a can or two of Engine Restore on it first
Nice work.
Thank you.
Hi, can you please tell me what is the weight of the original exhaust valves on the yamaha yz450f (2005-2009)?
I don't know.
beautiful work. you left out measuring/setting valve clearances .. need something to watch!
In this video, it is primarily a matter of repairing damaged parts.
Thanks.
what brand and serie of milling machine you use ??
Beautifull
Where are u located and can I send u some work? Need the same repair done on a 06 cr250f head
We're you located?
Nice i like this video
Why dont you just made a tolerance fit for the insert?
Warning!!!
The pressing is a big problem for 2 side holes.
acked accentuation of seats and valves
Don’t they come out and go in easier if you heat the head first?
it adapts to the whole cylinder head
@@PaulXchannel do you go through heads for anyone and if so how much?
👏👍
Did you use 5 angle racing method in cutting the valve seats?
Made on SERDI 4.5 valve seat machine.
@@PaulXchannel I was asking about what type of angles you cut on the seats? 3 angles or 5 angles?
@Bobby King Sorry i don't know.
This cutting is from another company .
I think - 3.
great skills
Thanks
Nice job👌
Thanks
@@PaulXchannel I really like your channel, can add to my insight
Thank you.
Paul X i got a speedi sleeve for my crankshaft its a 25mm shaft & a 25mm sleeve does that sound write to you has it looks like a tight fit but haven't put it on yet just tested it up against it for now buddy ? ? ?
Hi.
When is sleeve loose you use glue - loctite 638.
@@officialmysteriousrider6327 Sorry. I don't know give advice.
@@PaulXchannel ok mate
perfect
Beautiful work but wouldn’t sourcing a used head have been more cost efficient?🤔🤔🤔
Not if it's your bike and you're doing it cause you like machining.
A decent condition used head is usually $400-$500, vs maybe 8 hours relaxing in the shop (and I'm a novice, this guy probably spent less than 5 hours, with 2-3 hours of that being setup)
Paul do yo mean wrong shim sizes
The camshaft brackets are tight. The cams do not return quickly. The piston will damage the valves :(
Why are all the valves all cockeyed in that picture they don't even look straight up and down
Due to better gas flow.
High performance aluminum.....7075?
AlMgSi0.5
Cheaper to buy other head new or used
Almost all used heads are damaged.
Welcome to 4T world.
Yep i replace them daily !
👌
osome dude
Mantab
Would you be able to do this for my head?
If its a human head... no he can,t..... if its a motorcicle head... nomather what.... he can😁
@@evaork3746 😂😂😂
focking good
Chapeax👍💪
What if you fill in the damaged area with aluminum weld and machine it back to spec?
High temperature will damage other valve openings.
Почему не подогрел?
Valve not grinding.?,not leaking🧐🤔 confuse😅
Not.
Nothing from the above.
@@PaulXchannel srsly😻 Amaizing🎉
Bad oil pump?
cam holder retracted too tightly
Thanks man, I like to keep up on things like that
In freaking credible... Show yourself!
Thats last resort. It would cost you as much to buy a head as to pay someone to do that much work. Also thers a chance of that sleeve failing under heat and high rpm.
Don't worry .
It work well.
I think your tools are a lot and they're pretty expensive tô
kude mayah monto yan?
???