Really should be discussing the 'Valve Clearance' Shrinking or increasing (Not Shim Shrinking) due to factors like Valve seat wear, carbon build up on the Valve seat or wear on the Camshaft lobe etc. Yes if the Valve Clearance tightens (Reduces) then a thinner shim will be required to bring the tolerance back into spec.... Likewise if the Valve Clearance increases then a thicker shim will be required. Sometimes the size stamped/etched on the existing shim gets worn off and the only way to measure the exact thickness is with a micrometer. Once you know the thickness of the shim removed and the how much the measured Valve Clearance is out of tolerance by, it's simply a case of calculation or indeed looking at the chart as supplied in most workshop manuals applicable to the engine you're working on. Hope that helps.

I asked a motorcycle mechanic to check my valve clearances and he’s like “I usually tell people not to bother, it’s not as important as people say” so I told him I want him to do it anyways. Long story short he had my bike for almost 3 months and I drove to his house early in the morning and took it back

@yungmayanprinceymp6113

Ай бұрын

same, said its not an issue unless its clicking, thoughts on this??

@travisconover4762

12 күн бұрын

​@yungmayanprinceymp6113 get a owners manuel and do the maintenance intervals. If your a novice rider, trail rider then double motor maintenance interval times-piston, valve checks, barrings. If you race then stick to intervals. Always change oil and clean air filters on time

@MrAlkanet-nt9ic

9 күн бұрын

@@yungmayanprinceymp6113 yep, it usually doesnt need adjustment if everything sounds and works as it should... also it depends on engine design, probably not the same in engines that rev at 10000 compared with those that hardly ever go over 4000 and so on... that said, it is hard to notice gradual change in engines i just had an idea to record my engine sound now when it's new-ish, so i could compare it once i hit valve changing interval... i'll do that in the morning...

He's like a medical surgeon...of course in motoring world. Thanks so much dude.

Last did this on a bike almost 30 years ago! About to rip apart my zzr1100 and this advise is gold. Thank you 👍🏽

Just attempted my first shim change and this video explains why there is a change in the valve clearance perfectly! Great job,thanks.

@vegasromaniac

2 жыл бұрын

Glad u found it useful

the shims dont shrink or enlarge or even deform at all. its the valves wearing out the valve seats that changes the distance the valve sits into the seat and in turn changing the duration the valve is open.

@jameswaterhouse-brown6646

3 жыл бұрын

@Ameer Nikolas ha! Nice one

@hamish3766

2 жыл бұрын

What he means is if the shim size required to maintain the correct clearance shrinks or enlarges........

@herkko61

11 ай бұрын

And what happens when an exhaust valve opens earlier and shuts up later? Hot exhaust fumes will burn the valve. Deformation occurs.

god bless you man! this is so helpful to me right now. thank you for all your work and passion for the sport. Best wishes and all my respect bro. ☮️

@vegasromaniac

5 жыл бұрын

Thanks man glad this helped

Keep up the good good videos!!! So glad I found your channel the other night I've been watching all your videos

Very god video! Love the explaining and thank you for the knowledge that you just shared. Greetings from a Hungarian in Sweden

exactly what these people are saying here, these videos are very explanational and help me alot, i thought you would be more known on youtube, keep up the good work!

Thank you very much. You get down to the small things - like a pro! Keep it up. Subscribed!

I really like your Explanation style! It is easy to understand and you give good samples to it. I did know that it is important (even if i dont own a 4 stroke) but what i didn't know was how exactly the valves wear out. Again, something learned. Thanks man!

@peterdeimler7192

6 жыл бұрын

Doing it doesn't matter whether is 4 stroke or 2 stroke both engines have valves or wouldn't be able to intake air to burn the fuel and then release the exhaust

@itzkertmusic5907

6 жыл бұрын

Peter Deimler lol 4 strokes valves and 2 stroke reed valves do the same thing but is different from one another just saying. The maintenance isn’t the same for both 2 stroke and 4 stroke valves. 😂

@peterdeimler7192

6 жыл бұрын

itzKert Music apparently you can't read, no shit A Reed valve is different from a normal valve that's fuckin obvious furthermore the objective of the valve is the same to intake air and Fuel and outtake fuckin by-product which just so happens to be carbon dioxide or exhaust.

@itzkertmusic5907

6 жыл бұрын

Peter Deimler lol ur not getting what I’m saying🙄 4 strokes valves you half to check ur timing chain marker regularly to see if its correctly place in the right spot for valve clearance to prevent damage in the internal engine combustion chamber. Other than the reed valve.😂

Awesome video! Very clear explanation.

Thank you very much, you answered clearly to my questions about this increasing/decreasing clearance.... 👍

Absolutely great explanation.

You are so correct. I have the problem now with my 2005 BMW GS 650.

great video bro this is what i was looking for thanks 🤘🏻

Good explanation. I seldom let my bikes come anywhere close to redline. But check my valve clearance regularly.

Thank you so much ENGINEER. God bless you.

@vegasromaniac

5 жыл бұрын

Thanks

Great video, your explanation helped out tremendously. My engine doesn't go up to 12,000 rpm though but I'm sure it's the same principal.

Very helpful thanks dude!

Good video, thanks man!

I love the information in your video clips mate. Keep up the good work!

Yes very Important!

Thank you for helpful hints. Happy 2022

@vegasromaniac

2 жыл бұрын

Same to you!

Great content VR. It was good to learn what is happening to the valve itself when wearing

@vegasromaniac

2 жыл бұрын

Glad it helped man

Awesome video I'm a new subscriber I've been working on bikes my whole life and you explain everything so awesome and easy keep up the awesome videos my friend God bless

@vegasromaniac

3 жыл бұрын

Glad I was able to fins somebody that appreciates my work

great explain, i didn't know it was so important , keep on making videos , much to learn from people llike you

Thank you, its grate information.

Ty man nice video and explanation

AWESOME explanation 👍🏾😎

Thanks mate good explanation

Thanx Bro - pretty well explained 👍🏼🍻🍻😇😇

Great explanation.

I loved the video and description.

@vegasromaniac

3 жыл бұрын

Thabksb

Great video man

I guess I better go check my valve clearance. Thanks for the video

@vegasromaniac

2 жыл бұрын

Yeah , man , easy and worth doing ..

thanks for the video!

romania! I like your teaching style. I too am in vegas, and just acquired an 08 yz4540!! time to see how everything is operating inside with a valve clearance check. SplehSeeba

@vegasromaniac

4 жыл бұрын

Awesome bike man..

Great explaination .....

impressive video there, professor. one of the better explanation videos there is. you done did an awesome job. I miss the days of screw adjusters for the valves. but that would require rocker arms and most bikes now use cam directly on the valve.

@randallhighsmith3406

6 жыл бұрын

michael adams no they dont valve adjustments are common and using rockers to adjust.

@miguelmendoza909

6 жыл бұрын

Randall Highsmith Do you see rocker arms anywhere in the video? A push rod? So no, it’s not common on this type of engine, because they don’t have any.

@herkko61

11 ай бұрын

Cam directly on the valve can have screw adjusters even today. For example Honda Transalp 700 got them.

Good video it ties in with some of the other valve adjustment videos. would you do a reassemble on the head video.

great job, forget better next time, you are already an extreme expert. appreciate the help, thanks.

Nice explanation!! I wish i had the confidence to tear down my motor. I know this is why my bije dont want to start.

@02aerio13

2 жыл бұрын

Just tear it apart without thinking like I did

@yungposeidon60

2 жыл бұрын

@@02aerio13 lmfao, is it running now tho?

great job thanks...

cool! more knowledge

Great Explained

Good job!

Thank you!

@vegasromaniac

5 жыл бұрын

You are welcome.

Very well done sir

Hi...excellent explaination 👍 can U do a complete video from taking rocker cover off right through the pulling cam/tensioner & chain out the way & how to get to chims & measure & replace chips & put back together (also another video on replacing water pump shaft & seals) please 😁😉👍

thanks for explaining

@vegasromaniac

5 жыл бұрын

You are welcome

Very good info tnx.

Wow good info good vid

I like this video, but to be clear, the shim isn't shrinking, the valve face, or valve seat is wearing. This causes the gap to change, and the need for different sized shims. Thanks for taking the time to make this!! :)

@vegasromaniac

5 жыл бұрын

Yeah Tru, I realized after I made the video I express myself wrong.. Can't take it back now.. It's like a bullet

@RealSuburbanCowboy

5 жыл бұрын

It doesn't really matter. If this gets people to check and adjust their valves, than that is what is really important. Again, I really like your channel, and I am excited you got a new bike.

Awesome content, new sub.

This guy has valuable content* support asap

Great video!!

@vegasromaniac

5 жыл бұрын

Thanks

For a guy that you can tell that English isn't your first language you explain yourself better than most people either could or try

Very good brother, thanks from Dhule Maharashtra India

awesome video

Very good

GOOD job

Thank you so much for this informative video. This really puts into perspective the kind of work that is done by the valves, piston and motor. I typically hear a rattle on my ~49k mile bike and I suspect it is the timing chain. Hopefully, I'd change it soon.

@vegasromaniac

3 жыл бұрын

Yeah, rattling is usually caused but the tensioner, it's about to pop..

@godwinikape8888

3 жыл бұрын

@@vegasromaniac what should I do in this case? Replace the tensioner or tighten it?

@yungposeidon60

2 жыл бұрын

@@godwinikape8888 ide replace it better bro

@yungposeidon60

2 жыл бұрын

@@godwinikape8888 I just bought a moded r6 and brought it to work and a coworker who has a lot more bike specially with the r6s, told me my idle sounds like the tensioner is about to pop too, he said best to replace it

@herkko61

11 ай бұрын

@@godwinikape8888 In many cases there are models using oil pressure to tight the chain and there are also mechanical models available. Oil pressure ones rattle for two seconds after start up even when they are ok.

Good job

It's not always the valves the cam lobs wearing down can cause the clearance as well I've rebuilt a lot of engines where the camshafts wear down before the valves

What about the throw of centrifugal force. That's why rockers start to slap at different RPM's. Just because is sounds good at idle, doesn't mean it feels good (the metal) at 3500 RPM's.. I just learned about valve lash. Now I can hear it in all of the cars making that tick sound.. :D

Sounds just like father sarducci. Great video.

@vegasromaniac

2 жыл бұрын

haha thanks

Im learning so much DIY that i would of thrown money away to Honda mchanics, just need to pick up a few more specialty tools, thanks for the content my friend!

@vegasromaniac

4 жыл бұрын

Awesome.. Yeah you can do everything yourself...

Would the exhaust valve shim play a major part of rejetting? Like not being about change to a bigger main jet on a 50cc?

The 2023 Yamaha Wr 250f revs to 16000 rpm the bike is a rocket it takes some practice but I love it in the woods. Any way I learn how to do the valves on these and 4 cylinder sports bikes if you have even a little bit of mechanical know how it is very easy. I refuse to pay a mechanic to do it sure, it’s a little tedious when you got to do all the measurements on the valves and shims, but it’s a love for the hobby of riding 🏍️

Can you make a video of what you can do to the valves since they can cause serious damage in the future. I'm new to the whole valve stuff, and I've changed shims on one of my quads but I don't want the valves to break and destroy my engine and I want to know if I have to just replace the valves or what else will I have to do.

@peterdeimler7192

6 жыл бұрын

Jorge_ Motorsports beauty of your valve mess up it won't destroy your entire engine grenade the bellhousing if that happens you'll have to replace the bellhousing the piston and maybe the cylinder if it's got any dings or anything in it but your bottom it should still be great

Im still baffled. Come on o er n check ma valves buddy haha

hi love your videos but i have a xr250L that have 10500km how often should i chec the valvs? thaks!!!

Truly Awesome, should be done for my R6, well explained

@vegasromaniac

5 жыл бұрын

Glad you liked it

Great! Do you agree that a compression test can tell if there is a need to open up the engine to inspect the valve clearances?

good vid

When clearances start going out of spec, is it just a matter of time and only so many adjustments can be done before you have to replace the valves and/or other parts? Are there any preventative measures to help avoid valves going out of spec or slow down the frequency of needed adjustments? Is it just change your oil and coolant on time and that’s it? And if it’s already happened once that valve(s) out of spec, best to shorten service interval? Once a valve goes out in one direction, will it continue to go out of spec in that direction until it’s no longer possible to shim? Thanks for your videos.

Thank you good sir, great vids 😁👍🏻

I thought after you explained why its important and what it means when the shims getting bigger or smaller, you'd explain what causes each to happen? improper riding, redlining, bad fuel etc ?

@scmb921

4 жыл бұрын

I think it’s just wear over time. If the gap is shrinking from the valves setting in the head more that’s wear. Same if the valve stem mushrooms and the gap is growing. I guess it could be from excessive wear like too hot or oil not lubing valve stem top properly but I think it mainly happens from high hours on engine. Not a pro so might be wrong here

If the shim to cam is too tight can this cause oil to leak into the cylinder causing smoke and oil coming out of the tailpipe?? Thanks and great info

@Justanother94

5 жыл бұрын

Rafael Mendoza that could mean you have a bad gasket and oil is leaking into the cylinder

Perfect music!!! that was nice addition. same pls*

Ive tried checking my shims, however they havent told me any good stories? How do you get them to talk

No dude we appreciate u.

Great explanation. I just had my valve clearance check on my cbr f4i. I need to change the shims and I was curious about how all of this works. by the accent and channel name I guess you are romanian? if so Multumesc de explicatie. Salutari din Brasov.

@vegasromaniac

2 жыл бұрын

, thanks for watching yes I'm Romanian but I live in Vegas

Really good and knowledgeable. Keep it up man and post more content.

@vegasromaniac

4 жыл бұрын

Thanks

My bikes got around 25k I purchased it with about 20k and from all the struggles I’ve had keeping it running from previous owner just using and abusing it I’m wonder would now be a good time to check valves and or replace components?

Very nice explanation, my bike have less valve clearance maybe i need to check de valve top or carbon in the engine

@vegasromaniac

5 жыл бұрын

That is always a good idea

@andreuserna

5 жыл бұрын

@@vegasromaniac i have 0,10 mm in all intake valves and it should be 0,20 its weird

@vegasromaniac

5 жыл бұрын

@@andreuserna if the gap is under, that valve will stay open when hot so the bike will start hard

@andreuserna

5 жыл бұрын

@@vegasromaniac I lose power over 6000 7000 rpm and it can work until 15.000 rpm i think the valves don't close properly when im on high rpm

The only "bad party" I won't attend "Valve and piston kissing". Lol

@verriahowe4334

3 жыл бұрын

Mine did and idk why

@johndoug4794

3 жыл бұрын

@@verriahowe4334 probably your cam timing tensioner jumped causing everything to be unsync.

@verriahowe4334

3 жыл бұрын

I hope it don't happen again I got alot of money into it and about to put alot more into it lol

So if the number gets higher you need to replace your valve basically

I've been reading up on this all winter, in preparation of doing my first scheduled valve job on my 83 cb1000 (my uncle was the previous owner, and didn't ride it much at all - its only just now at the 10k mark, and showing signs of needing adjustment). the main thing holding me back from doing the job at this point is the availability of the shims, because I don't know what sizes I will need until I start the job, and once I know, I will have to order any shim sizes that I don't already have. But I want to know - because checking valve lash and changing shims could potentially drag out the job because of shipping time, why not just order brand spankin' new valves and solve all the problems in one fell swoop?

@motov8-garage832

2 жыл бұрын

I'm currently about to roughly the same thing. I have a 05 kawasaki ninja 636, I'm a bit late on doing my first valve clearance check (26,000 miles). I'm not riding the bike anymore till I get all this process done..and it's a bit over welming lol. After my research I had about the same questions about shims and where and how to get them, you don't know what you need till you have the top end half way tore down. I seen online they have shim kits with multiple different sizes included, I'm planning on just ordering one of those kits("HotCams")about 63$, also a micrometer, a set of bent feeler gauges, and a new valve cover gasket. Then I should be good, I'm still going to be researching and reading for weeks more lol, that just my ocd. But as far as you saying just get new valves, that would mean taking off the entire head and a trip to a machine shop, more time, parts and money. The shims are cheap and most sport bikes use the same size shims and design for many years so there abundant and common, even other small engines use the same shims(I'm talking circumference not thickness) The hotcams kit should cover anything you might need and then you can even order them individually if needed.

@walterandrews3077

Жыл бұрын

New valves probably won’t give you the proper clearance. If you really want to do it yourself, get a shim kit. Probably cheaper than a new set of valves, or paying a shop to do it. Also get a micrometer and learn how to use it.

Klx 250s 2009, on cold start it always hard to start. Electronically it does not have a kick start. And im thinking to are the shim. They are little noisy once is running. Once is running it starts right up.

Does the bikes make a noise or something related to off spec valve clearances? Mine is doing some metallic clicking/crackling noise when reducing speed but I do not know what to look for. Its only when driving and lowering speed.(or thats when I can clearly hear them)

@TheSilviu8x

2 жыл бұрын

That's the hole engine been dragged by the wheel. It's not a big deal, to hear some piston/ring slap and chain clatter. Even the valve train might complain about that, with small wear in between..

Is it possible the bike won’t start if valves are offspec??

Is this work being done on a ZX12R?

How do I tell if my bike needs a valve adjustment

Hello, how is everything? the mechanic servicing my 2012 wr250f said I have to change the 3 intake valves. looking over the bike on the seat looks like this. the left insert is at 170 the middle insert 134 , the right insert 160 . the insert in the middle that has 134 can I change the insert to stay in the measurements or do I have to change the valve? Could you help me please ?

@vegasromaniac

2 жыл бұрын

Had to find shims smaller than 130, that's a worn valve , you gonna need to replace it

Damn, i just bought a dirt bike. Not looking forward to all these rebuilding and replacing and taking apart. I only know how to change oil and filter

@vegasromaniac

5 жыл бұрын

Once you do it, it's easy, or pay somebody to do it but than you gonn spay a lot

Will out of adjustment valves cause your bike to shut off

The shim doesn't shrink it's the valve seat wearing

@peterdeimler7192

6 жыл бұрын

moe green that's funny because you could check and gauge your shins and if there anything then the original thickness and they've shrunk and I've seen this happen so you're wrong

@moegreenbl

6 жыл бұрын

Peter Deimler you are incorrect the shim does not shrink I am a mechanic the valve and the valve seat is what wears

@peterdeimler7192

6 жыл бұрын

What are you some kind of backyard mechanic is a mechanic to him and I rebuild these m************ and I've literally telling you that I've watched it happen and check it you can gauge it there is a tool for that buddy

@peterdeimler7192

6 жыл бұрын

If you want to get technical it's not shrinkage but it being mashed flat so same shit

@bradleymoyer5236

5 жыл бұрын

Hes right. Its the seat that wears.