Afternoon, I always watch your videos with interest, great work. question - why did you make the bushing iron ? because of the different thermal expansions this repair does not look reliable. maybe an aluminum bushing would be a better solution ?
💯 I get this a lot on old vintage British bikes. I usually hone out the valve guide bore with a Sunnen Honall, then make an oversized bronze guide. If the press ain’t right, it will spin. I’m curious to know how much press is on the sleeve in the head as well as the guide. Heat transfer may be effected as well… creative fix however
Hi Paul, I’m currently rebuilding a 2005 Crf250r. I had a valve drop at full throttle, yet unbelievably the head and cylinder survived and all I need to do now is replace a bad left exhaust valve guide. My question to you is: am I doing anything wrong by running just one brass valve guide? The others are in perfect condition but I do not believe they are brass. Should it be all the same material for better heat distribution or something else I’m unaware of? Thanks
Never hold a micrometer close to, or at, the anvil or spindle ends. Always hold the instrument at the outer curve of the frame, preferably on the plastic pads, if fitted.
![BLACK BAG - Official Trailer [HD] - Only in Theaters March 14](http://i.ytimg.com/vi/Du0Xp8WX_7I/mqdefault.jpg)
Afternoon, I always watch your videos with interest, great work.
question - why did you make the bushing iron ? because of the different thermal expansions this repair does not look reliable. maybe an aluminum bushing would be a better solution ?
Immer wieder spektakulär, wie Paul hier Präzision und Kreativität zusammenspielen lässt! Chapeau!
Wie immer, Super gemacht und wunderbar anzusehen…!👍😍
I
Why not just make an oversize guide for the new head size hole? Steel expands less than alloy alluminium it will loosen.
💯 I get this a lot on old vintage British bikes. I usually hone out the valve guide bore with a Sunnen Honall, then make an oversized bronze guide. If the press ain’t right, it will spin. I’m curious to know how much press is on the sleeve in the head as well as the guide. Heat transfer may be effected as well… creative fix however
RMZ450 heads are prone to failure :) nice work !!!
fantastic engineering skills great job well done
Another fantastic repair 👏👏
exactly as we are very used to do in Brazil, not only with these housings but also with valve tappets. Awesome job!
I miss this Bro!. Regards from patagónia Argentina.
incroyable travail, bravo j'adore vos vidéos avec toujours des techniques souvent très malines
Wooow...I never thought you would do that..... your brain is out of the box bro.... hahaha.... very creative
You do do beautiful work 👏🏻👏🏻👏🏻👏🏻
Awesome work sir…well done! 👍
Hi Paul, I’m currently rebuilding a 2005 Crf250r. I had a valve drop at full throttle, yet unbelievably the head and cylinder survived and all I need to do now is replace a bad left exhaust valve guide. My question to you is: am I doing anything wrong by running just one brass valve guide? The others are in perfect condition but I do not believe they are brass. Should it be all the same material for better heat distribution or something else I’m unaware of? Thanks
ruclips.net/video/moHewuuppAk/видео.html
Muy buen trabajo
The techniques are quite amazing😊,👍
Why aren't the valve bushings all ported polished like the previous factory defaults?
Super Präzisions Arbeit. Hut ab Paul 🎉🎉
Nice repair, thanks! 👍💪✌
Interesting. Why not make a threaded sleeve to screw into the head? Which has oem inside dimensions for the guide.
Why not enjoy a different point of view?
@@loopeyshooter503 because I was an engineer major and I want things fixed, not bandaid
Hola..como puedo contactar con usted ?..saludos..para reparacion de head cylinder bmw r100gs...
Toto by som aj ja potreboval spraviť 😂, inak super
hello bro..do u have engine rmz250 ? i need to buy if u guys have the engine..im from malaysia..
Sehr schönes Video 👍
Good job 🤜🤛
Мне кажется распредвалы и пастели головки тоже требуют ремонта
Beau travail de sauvetage 👌
Awesome job 👍
Cam shaft journals look rough as !
love the animation of the commando head
Top video 👌👌👍👍👍👍👍
Attention to detail that’s it the perfect example
good job 👌👌
あなたの技術は新しいヘッドの価格 価値 を超えている😂
You are the best!!!!
Perfeito. Trabalho incrível 😮. Forte abraço aqui do Brasil. 🇧🇷😎
Cool !! your back...
can you fix my rmz250 head?
E a trava?
Buen trabajo
Как обычно, всё просто.
Чётко
молодец, добро пожаловать в Россию
Wait, one seat is berry and the others are stainless? 😮
Good job 💪
good job😊
Serviço de qualidade
Maestro!👍
очень крутой способ ремонта.
Never hold a micrometer close to, or at, the anvil or spindle ends.
Always hold the instrument at the outer curve of the frame, preferably on the plastic pads, if fitted.
I hope u in Indonesia
Thank you for repairing ✌🏼🫡.
Good job
Beautiful.
Spettacolo !
Почему на холодную ставили она снова вылетит
everything can be fixed
better than new
Направляющую одним телом, большего диаметра сделал и забыл.
w can i dm you?
Top top
😂😂😂😂 сюрприз.
Мастер молодец. 🤝👌👍🇷🇺
Браво 👏👏👏👏👏👏
Kalo ada yang susah ngapain yang mudah...yang penting cuan
👍
Just make an oversized guide.
💖
This head was probably repaired as a joke. After all, she is blurred. Camshafts too 😆
ruclips.net/video/VflPsKsdyNQ/видео.html
tre metalli differenti /tre dilatazioni differenti .non buono🤑
Zer gut 👍
Go back to Old School 2 Stroke all the way. 😅😅😅😅
Самое слабое место kawasaki и suzuki
Copper valve guide? 🦮 🤨
*always nice.. 👏*