Yamaha YZF 450 . Repair of damaged valve lifter guide.

[@tuananhpham676]

You're real mechanic. You repair damaged part, not replace it. Thanks for your share

[@PaulXchannel]

Thanks .

[@nickopedia5669]

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.

[@krotchlickmeugh627]

Machinist. Not mechanic

[@krotchlickmeugh627]

@@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

[@stealth117chen8]

Easy to watch but hard to by myself. Great job bro 👍. From Indonesia with love ✌

[@666lifeispunchline]

Asiyappp

[@oldschoolpro]

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]

:)

[@oldschoolpro]

@@PaulXchannel where are you come from Paul X?

[@MC-lm9vs]

I can now say I've witnessed GREAT. Keep up the good work

[@ronaldjohnson1474]

With the right equipment, one can do amazing work. The value here is the knowledge of the equipment.

[@Zt3v3]

The idea to re-sleeve is pretty nifty too.

[@damianchytutos9334]

It is a real pleasure to see you work. Congratulations

[@PaulXchannel]

Thanks .

[@MrEtnorb]

Beautifully filmed and edited. Up to the Allen Millyard standards

[@PaulXchannel]

Thanks

[@fuadgaminng446]

@@PaulXchannel ò

[@minasretifica2566]

Congratulations friend. Beautiful work, greetings here from Brazil

[@PaulXchannel]

Thanks

[@jeremyvi]

That is state of art mechanic. Thumbs up !

[@evaork3746]

What u do is a work of art..... above that.... u are a work of art.... damn damn damn nice man👍👍👍👍

[@PaulXchannel]

Thanks for watching.

[@evaork3746]

@@PaulXchannel thanks.... love this stuff... this is not an ass who does something.... u know what u are doing... so nice to watch😘

[@masksheurty6767]

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 👌💪💪💪

[@PaulXchannel]

Thanks for watching.

[@c__TattinhNhi]

This requires a very high technique, great😊👍👍👍

[@miloschewitsch]

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😉👍

[@ZygmuntKiliszewski]

Modern devices and instruments. Precise repair performance. Do the valves have an identical through/working surface? Congratulations :).

[@PaulXchannel]

Thanks . All is ok.

[@ZygmuntKiliszewski]

Thank you 😀

[@alessiopaganelli]

I lavori che fai non li fanno in molti meccanici, complimenti

[@PaulXchannel]

Thanks

[@MrShack246]

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

[@andrei9339]

Hi! I love your work man!😉 Just have a question. Why did you made the sleeve when you could easily machine a bigger lifter?

[@PaulXchannel]

I tried to do a lifter but it wasn't good. He broke down.

[@nadjib.kabouche]

Very nice end clean work, good job bro👏👏👏👏👏

[@PaulXchannel]

Thanks

[@clydenunya577]

New sub here your work is truly impressive

[@psk5746]

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

[@PaulXchannel]

Thanks. Aluminum is not a problem. I use it with a higher Si content.

[@vette63]

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.

[@PaulXchannel]

Ktm is OK.

[@jesseramirez7654]

Do you still do that kind of work?

[@eliblaine7711]

Nice. Where are you at? If you’re ever looking for a new set of hands I’ll come work doing this!

[@georgesnasr7227]

I love your work man.

[@Popmonkey69]

Nice videos mate 👍🏻

[@PaulXchannel]

Thanks

[@corbaneells3997]

Nice repair! Where is your shop located?

[@soybiensudaka6954]

He's a motorcycle surgeon!!! Awesome...

[@noechavez5917]

Where are you located.

[@Francesco-js8nk]

Molto molto bravo....congratulation from Italy.

[@kk-xn5pp]

You are a master my Bro🔝🙏

[@PaulXchannel]

Thanks

[@ProbstMotosports]

How much would you charge to do mine if I ship it to you?

[@1enso]

bello, ma non fai alesaggio alle sedi valvole??

[@justgames3390]

Hi, have I ever used KMPI or Psychic valves?

[@cesaomotos164]

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 ) .

[@PaulXchannel]

Thank you very much.

[@jacobjeremiahdawson7669]

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 ??

[@PaulXchannel]

I don't know.

[@RaulFlores-zy5lt]

We're you located?

[@TheDuroProject]

fantastic work. But in a matter of costs, considering all the work, is it cheaper than buying a new cylinder head?

[@PaulXchannel]

Thanks. Is it cheaper - 50e.

[@yudhafrankenstein2361]

May I ask, sir. to replace the damaged valve lifter hole, can I use iron pipes?

[@PaulXchannel]

use aluminum with a higher silicon content

[@yudhafrankenstein2361]

@@PaulXchannel Does duralium contain silicone?

[@PaulXchannel]

Yes

[@yudhafrankenstein2361]

@@PaulXchannel Will using thread lock not be released when the engine is on? I had the same thing to fix as you did

[@bouuyaaamotors6073]

mazing my man your a boss of dirt bike !!!!!!!!!!!!!!!!!!!!!!!!!

[@PaulXchannel]

Thanks

[@charliepapa5835]

Where are u located and can I send u some work? Need the same repair done on a 06 cr250f head

[@mialmagama]

Tremendamente profecional 👍👍👍👍👍👍

[@GodfatherMaxi]

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

[@PaulXchannel]

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.

[@mxsilute329]

@@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!

[@PaulXchannel]

@@mxsilute329 Thanks

[@Artaz234]

Can this broken head engine

[@DisruptiveUnicorn98k]

I would like to work for this guy just the experience and skills I'll learn will be enough pay for me

[@PaulXchannel]

Thank you for the compliment.

[@DisruptiveUnicorn98k]

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

[@PaulXchannel]

@@DisruptiveUnicorn98k Little space for this repair in the cylinder head.

[@gibamec7636]

Perfect! Grand job, Very good

[@travisk5589]

I knew it!!! I knew it was bullshit when my mechanic said that the seats needed to be cut to match the new valves

[@nickopedia5669]

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.

[@evaork3746]

I think ur mechanic was right🙈🙈

[@MikeSmith-ve2qu]

Man great work but would it be cheaper to buy a new head ?

[@PaulXchannel]

Thanks. Repairing this head was not expensive.

[@mevlogs194]

First time to see! 5 valvesg? How it works?

[@PaulXchannel]

Well

[@psk5746]

Simple. 3 inlet and 2 exhaust

[@nigelmoore6519]

What broke the valves lifter in the 1st place

[@PaulXchannel]

Tight camshaft holders.

[@justgames3390]

Hi, can you please tell me what is the weight of the original exhaust valves on the yamaha yz450f (2005-2009)?

[@PaulXchannel]

I don't know.

[@cvot378]

what brand and serie of milling machine you use ??

[@robertking1032]

Did you use 5 angle racing method in cutting the valve seats?

[@PaulXchannel]

Made on SERDI 4.5 valve seat machine.

[@robertking1032]

@@PaulXchannel I was asking about what type of angles you cut on the seats? 3 angles or 5 angles?

[@PaulXchannel]

@Bobby King Sorry i don't know. This cutting is from another company . I think - 3.

[@officialmysteriousrider6327]

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 ? ? ?

[@PaulXchannel]

Hi. When is sleeve loose you use glue - loctite 638.

[@PaulXchannel]

@@officialmysteriousrider6327 Sorry. I don't know give advice.

[@officialmysteriousrider6327]

@@PaulXchannel ok mate

[@restakurniawan924]

You are genius mister 😁

[@PaulXchannel]

Thanks

[@mxr7586]

Don’t they come out and go in easier if you heat the head first?

[@PaulXchannel]

it adapts to the whole cylinder head

[@mxr7586]

@@PaulXchannel do you go through heads for anyone and if so how much?

[@leecurry8170]

Nice work!

[@alipim3504]

Parabéns sou do Brasil parabéns pelo trabalho

[@PaulXchannel]

obrigado

[@nigelmoore6519]

Paul do yo mean wrong shim sizes

[@PaulXchannel]

The camshaft brackets are tight. The cams do not return quickly. The piston will damage the valves :(

[@mathewwaldron8110]

Yeah U know ya what your doing, been around for a while easy 2 tell.

[@anthonywilliams4638]

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

[@PaulXchannel]

Do not worry. It works well.

[@DisruptiveUnicorn98k]

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.

[@schnecks2180]

@@PaulXchannel I appreciate that somebody has the balls to try this stuff. It would be very interesting to get an occasional follow up video.

[@PaulXchannel]

@@schnecks2180 Don't worry it still works fine.

[@nickopedia5669]

@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.

[@llewvirtue861]

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

[@PaulXchannel]

Thanks. This glue Loctite is awesome . My long-standing problems are over with him.

[@llewvirtue861]

Same valve configuration as original Fzr 750

[@nickopedia5669]

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.

[@AC-uq5rh]

👍👍👍жалко что у меня никогда не будет такого оборудования

[@performancecyclespecialtie6104]

Cheaper to buy other head new or used

[@PaulXchannel]

Almost all used heads are damaged. Welcome to 4T world.

[@performancecyclespecialtie6104]

Yep i replace them daily !

[@TaloonSpeedProject]

Amazing skill and tools

[@PaulXchannel]

Thanks

[@fw1421]

Beautiful work but wouldn’t sourcing a used head have been more cost efficient?🤔🤔🤔

[@nickopedia5669]

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)

[@dougkahl2072]

Would you be able to do this for my head?

[@evaork3746]

If its a human head... no he can,t..... if its a motorcicle head... nomather what.... he can😁

[@dougkahl2072]

@@evaork3746 😂😂😂

[@crispincurtis8585]

Bad oil pump?

[@PaulXchannel]

cam holder retracted too tightly

[@crispincurtis8585]

Thanks man, I like to keep up on things like that

[@OGKILLa9365]

What if you fill in the damaged area with aluminum weld and machine it back to spec?

[@PaulXchannel]

High temperature will damage other valve openings.

[@11262010iloveyubby]

Teach me your ways!!

[@nycrider1548]

Good job bud new cylinder head is only 700$

[@mikerieck306]

High performance aluminum.....7075?

[@PaulXchannel]

AlMgSi0.5

[@ihateemael]

beautiful work. you left out measuring/setting valve clearances .. need something to watch!

[@PaulXchannel]

In this video, it is primarily a matter of repairing damaged parts. Thanks.

[@lisandrodebortoli5158]

excelentt thanks !

[@cptyler150]

Why are all the valves all cockeyed in that picture they don't even look straight up and down

[@PaulXchannel]

Due to better gas flow.

[@afonsocosta7152]

Trabalho espetacular. Parabéns.

[@PaulXchannel]

Ok

[@wdobni]

i dunno....it looked pretty good to me.... i think i would have tried a can or two of Engine Restore on it first

[@mas_jeckhrj2179]

Nice job👌

[@PaulXchannel]

Thanks

[@mas_jeckhrj2179]

@@PaulXchannel I really like your channel, can add to my insight

[@PaulXchannel]

Thank you.

[@andrewwilson8317]

Nice work.

[@PaulXchannel]

Thank you.

[@garasioffroad5432]

Nice i like this video

[@nunesmotos351]

Um trabalho muito de mestre mesmo

[@bezsobsaki]

Почему не подогрел?

[@hsbh09]

Valve not grinding.?,not leaking🧐🤔 confuse😅

[@PaulXchannel]

Not. Nothing from the above.

[@hsbh09]

@@PaulXchannel srsly😻 Amaizing🎉

[@nurullahshaikh6015]

Wow nice

[@guidosighinolfi3701]

Chapeax👍💪

[@juansebastianrodriguezposa8201]

Beautifull

[@Doc___]

👏👍

[@gussrestu]

kude mayah monto yan?

[@PaulXchannel]

???

[@nelsonmarcarvalho]

great skills

[@PaulXchannel]

Thanks

[@williamfernandogironlopez7643]

acked accentuation of seats and valves

[@albertomartinezgarcia9024]

👌

[@artur855]

perfect

[@saqiffaray4177]

osome dude

[@sibegundaloslo2233]

Mantab

[@Husqvarna_ILSAN]

focking good

[@c__TattinhNhi]

I think your tools are a lot and they're pretty expensive tô

[@glimmerman4hm]

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.

[@PaulXchannel]

Don't worry . It work well.

[@ic_clearly]

In freaking credible... Show yourself!

[@hdhdjejbdhdjss7561]

Nunca mais presta o cabeçote.

[@jernem7309]

my phobia😰

[@truongnguyen3889]

Wa tài