How to Clean and Refinish Valves
ฝัง
- เผยแพร่เมื่อ 4 เม.ย. 2018
- So I know I told you that I’ve been working on the cylinder head for the past week, and that’s because I have… Getting the most out of your cylinder head requires a lot of man hours, and a lot of patience. I’ve been using carbide bits for the past week and I’m finding little chunks of aluminum everywhere. I still have lots of work to do to it, but in the mean time, I figured I’d show you how I brought back my old valves back to life.
Just like the P&P job, this isn’t a difficult task, however it is quite repetitive and time consuming. To make your life easier and to save you time, I’ve included a list of the tools that I used in this video to get this job done, and it make life SUUUUPER easy.
Dewalt Max XR 20v Hammer Drill Combo Kit ▶︎ goo.gl/avFMmt
Valvetrain Organizing Tray ▶︎ goo.gl/4Bz6pT
3M Fine Scotch-brite Pads ▶︎ goo.gl/fpjyxH
3M 800 Grit Sandpaper ▶︎ goo.gl/1dxcYv
3M 1000 Grit Sandpaper ▶︎ goo.gl/hmNSDe
3M 1500 Grit Sandpaper ▶︎ goo.gl/QxtwM9
3M 3000 Grit Sandpaper ▶︎ goo.gl/BrhqCY
Mothers Metal Polish ▶︎ goo.gl/qKWodq
Shop Towels ▶︎ goo.gl/3Sb6dD
Camera Used for this Video ▶︎ goo.gl/C1mN2C
Camera Used for Alternate Shots ▶︎ goo.gl/TN4ZgG
Don't forget to give it a like 👍 and follow 👣
milanmastracci TH-cam Channel / milanmastracci
milmast Instagram ▶︎ / milmast
If you have any questions, feel free to send me an email at milanmastracci@gmail.com. Thanks for watching!! :) - ยานยนต์และพาหนะ
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Well my valves don't seat properly anymore, but hot damn they look good.
😂
Too much funny
exactly my thoughts
Scared of a little valve lapping?
Ahahahahaha yes more leaks then when they had build up but they do look pretty for something no one will ever see...
As an engine builder myself, should never use sandpaper on the stem, this removes material causing balve to guide oil clearance to increase which can cause immature wear of the guide as well as the valve
Exactly
That's what i thought and I havnt clean mine at all yet it took my top end apart.
I use blue painter's tape on the clean (guide area) end of the stem, i was always worried about the drill chuck scratching the stem
What's "immature wear" lmao
@@clydewatson7889 I'd tape off the ends before putting into the chuck
Wow it looks so much better thanks, next I think i'll polish the inside of my gas tank
lmfao
Lol... get better fuel flow huh?
😂😂😂
please use a lighter so you can see what your doing man
Yes thats a good idea that will reflect the light from the lighter so you can see how much gas you have.
Guys calm down. This guy is certified youtube mechanic
Pacifik kiddoz amen
Bahahahaaaa 👍 TH-cam mechanic, that's a hot one. TH-cam the place where what you know doesn't count, just as long as it's an attention grabber.
This guys fucken nuts i coulda put the entire motor together before he finished just the intake side...
Yeah TH-cam approved!
@@khalid95eG calm down
Don't forget when re-assembling the engine, to install the piston return spring.
And the exhaust bearings!
And blinker fluid
Also cut the exhaust to apply a exhaust clamp
LOL Ahhhhh
Wait those r real?
please take this down before people ruin their valves
Johnny Cash I was thinking the same thing, I just knew he was about to use a bench wire wheel
Just curious, how is this process damaging to valves? The surface loss by doing this is absolutely minimal.
@@syrthdr09sybr34 Because its in an engine, the tolerances for mistake is very low, slightly changing the angle and geometry will allow blow by
@@connorray9801 Well given that he's simply polishing the surface and not removing any substantial amount of material, don't you believe that simply grinding new valve seats and installing a new set of valve stem seals would be sufficient for proper operation? I mean you should already be doing all that when rebuilding a cylinder head after all.
@@syrthdr09sybr34 You have to realise that everything in engine is being measured in hundreds fractions of a millimeter and that right there is more than substantial amount of material removed.
I took it to the next level and plastidipped my valves black..damn they look soo good!
For those that don't know... There should actually be a degree of roughness on the valve stem/ face to help atomize fuel... DON'T polish the valves like this guy does. Also if you chuck your valve into a drill / drill press, you should have a piece of rubber tubing in between.
or just use masking tape to nurture the stem. check first if your valve stems have special coatings!...you don't want to sand off any coating.
Absolutely RIGHT. Saw this video and Cringed!
I have seen many videos of people chucking there valves in the drill and not cover with something
Thanks for the tip!
Thanks Patrick, that makes more scense.....so where do you stop, at the purple scotch brite? What about cleaning the other end?
Im going to do the same process... and use those valves as key chains.
🤣🤣🤣🤣
Cool decoration. Would never put this in my motor.
Actually, I might do that. Definitely not putting that garbage in an engine.
Now thats the best use for these valves he only screwed them up by polishing them.
In this episode:
HOW TO REMOVE MATERIAL FROM YOUR VALVES SO THAT THEY DONT SEAT OR SEAL PROPERLY
Glass media blasting a valve has fundamentally changed its geometry. The reason valve work is expensive is because it should be done precisely using machines and the correct tools. I know it looks shiny and you've improved somewhat boundary layer resistance, but what you've created are incredibly minute changes to the diameter up and down the valve stem, and probably reduced the diameter of the valve head somewhat. These things are a minute and 100% factual science now bro. There isn't any subjectivity anymore. We have run millions of engines millions of cycles in every application under the sun, most of the people who said you did a bad job are unfortunately correct. Some research into what valves are and why they are important would have gone a very long way here.
Whether you lap the valves afterwards or not, you've messed with the valve geometry on a scale you don't consider important, and thats fine. But the scale is important and all these guys in the comments telling you that have a point. What you did will severely reduce the life of your valves.
Just an FYI when they make valves from scratch they balance test them, test for roundness, check tolerances and sizings to the thousandth of an inch, and ensure they all weigh exactly the same, and most importantly, your stem guide clearance should not be anything but the most accurate it can possibly be. Sanding the stem of a valve is very very silly if you want your engine to run hard, fast or long periods, or indeed, all three.
Lets not forget that once you have spent hours and hours polishing your valves and assuming you had the fore thought to do a 3 or 4 point valve job to restore the seat angles and margins, corrected or was able to maintain the guide play with the stem, it will carbon up again shortly after a handful of engine cycles anyhow. This Tuber is completely inexperienced, uneducated in engine and cylinder head building/restoration. I could barely get through this video.
this is very convincing comment , i have a gdi engine how can i clean the valves if its has carbon build up?
@@mm-il8dg it will do more good for you to run an in-tank cleaner. They sell bottles of these carbon removing agents everywhere these days. They work relatively well and are worth the money. Read some reviews and find a good one.
@@Kavster92 but in gdi engines the injectors doesn't clean the valve unfortunately 😔
@@Kavster92 on cars with _Direct Injection_ there is no fuel passing over the intake valves, if it did they wouldn’t have carbon build up.
really? wet sand the valve stem? you want your stem to guide clearance at like 0.006 too?
Yeah, that was the only part that I took issue with. You can re-grind the valve seats so polishing there doesnt matter. I wouldve just left it at scotchbright-ing away the carbon and call it a day
I think he wants to make them variable tolerance stems. Just think how the panties will drop when his boyfriend sees them valves.
Valve lapping is a must now after you sanded them valves. The valve must match the mating surface on the head to have the proper seal. Good luck.
Milan Stankovic AD FREE you beat me to it. Props
That is must anyway ;) Lets hope he didnt made much damage with sandblasting so he dont have to polish seats like 3 days LOL :)
Pozdrav Urose! Ovaj moj imenjak se trudi. Pratim njega vec par godina.
Pozdrav Milane :) Jeste, mali baš daje sve od sebe, zato mi se i dopada :) (kada ga uporedimo sa njegovim vršnjacima dečko je genije ...) I baš mu želim da uspe u životu.
Lapping should be done on a head job regardless.
Thanks for makes us laugh and let me know when you car blows up 😂😂
Boys car blows up when a girl walk around that hahhahhh
😂
😂😂😂
THIS VIDEO SHOULD BE REMOVED FROM TH-cam SANDING THE VALVE STEM MAKE LOSE THE ADJUSTMENT BETWEEN THE STEM AND THE VALVE GUIDE
LuchoPortugayo obviously he has never heard of specs and clearances and has never seen valve grind and a suction cup and how it’s done old school and properly😂😂😂😂
TH-cam wouldn't have any videos if they took down all of the bad information on it.
If you don't see any micrometers and bore gauges being used, they are probably back yard hacks.
If he buy a set of new valve. I confirm he will polish all of them to look shining.
@Dat Boii or you can just replace the valve guide.. like anyone who knows what they're talking about would do.
@@TurboVisBits what are you gonna replace it with. He did it by hand. All the clearances are different now. He’d have to get custom valve guides for each valve.
You seem to be under this pretence that shiny = more power/better performance. As long as the big chunks of carbon are gone the valve will be fine.
Congrats, you removed the Black Nitride coating that protects the metal.
The valves didnt have nitride coating...
YES HE DID REMOVE IT. GOOGLE BLACK NITRIDE. IT MAKES THE VALVE LAST LONGER AND HARDER!!! FOR HIGH RPMS. LIKE BOAT ENGINES!!!!
I just watched a guy sand blast a valve?!?!?!
That was the funniest thing ever
I usually spray PAM cooking spray on the finished product for longevity.. great video man.
hahahaha
all that truly matters is that the valve seats properly, that carbon will return within 5000km easily
Regardless with these valves or new valves, I will have to lap them into the seats to ensure a proper seal 👍
He's installing a catch can. The reduction in sludgy deposits will be realized immedietly just from that. Now that the valves and ports are a high polish, the walnut blasting will be much more effective.
He likes his cars to be super clean.
Polishing a valve decreases surface area for carbon to deposit on.
A highly polished back surface inhibits carbon deposits and improves flow over the valve. A highly polished face (inside the combustion chamber) reflects radiated heat from the flame and helps keep it a shade cooler (more important with exhaust valves). Read A Graham Bell
First never do this. Two polishing affects nothing. Shape of the valve improves performance. Feel bad for anyone who does this. The ignorance in this video is shocking.
And the fact that he is grinding the stem too ..terrible
I'm glad I read this comment.
Valve seat will also be off
When you re lap the valve the edges will become rough anyway 😂😂😂😂😂
OK SO WHERES YOUR VIDEO CLOWN
WTF, why dont you spray paint your valve's. They'll look awesome
Good idea, also put some holes in it to save weight.
Speedholes
Haha shit worked great came out just the way he shows in video!
and have a good supply of jb weld to fix those little imperfections too
Don’t forget the pistons you gotta paint it all or it won,t work.
You should wrap the valve stem in masking tape where it's gonna be touching the drill Chuck to avoid damaging it
wow this is so much great. my car won't start but my valves are clean and shiny. thanks for setting my mind at ease.
Why on earth should you polish the engine valves?! all you need is to remove the built-up carbon... Also, sanding the valves might cause improper seal when you get a spot sanded more than the others!
If you aren't using a drill or some way to keep the valve spinning, yes I could see the flat spot argument, however with it mounted in the drill, it gives a very uniform result
Right...
And that's where the lapping/grinding comes into play...so no problem with that.
you are absolutely correct. stupid video
people pay a lot of money for new valves that are polished ,, it reduces carbon build up by a shit ton
This is an April fool's gag right?
Thumbs 👍 up for increasing stem/guide clearance. Completely unnecessary other than the scotchbright
@Ellie Basic yes scotchbrite is fine
Ellie Basic do not listen to him. The scotchbrite still is not a good idea. It still scratches the metal. Even if it says nonscratch. Professionals use untrasonic cleaners to remove dirt and carbon without stripping a single piece of metal. That’s the whole purpose
@@ZFnr4y058mr professionals do use ultra sonic cleaners but scotchbrite scratches are negligible on valves for non professionals, I've done it so many times without any problems and built many cylinder heads so stop spreading disinformation if you don't know what you're talking about.
BMWm6e63 hey dumbass. It’s not disinformation. It is still risky and although you have not caused damage, doesn’t mean someone else can’t. That’s like saying you’ve never killed anyone driving drunk, so the next person is all clear to drive drunk. 🤦🏼♀️
@@ZFnr4y058mr what's the risk, You might shave off 10thou? It's a scotchbrite you dickhead not a grinding wheel. Some people need to lay off the Internet sometimes because they take it for 100% fact.
Thanks for the tip , after I polished the valves using your method I figured why stop there? So I sandblasted, sanded, and polished the inside of my whole exhaust system, headers and all. I burnt up 4 dewalt drills in the process. It’s a good thing I don’t have any compression because it looks so fast and air doesn’t want to stick to it. Haha I can’t even pretend to not know as much as you. Thanks for the customers too bad they can’t sue you for bad advice.
I did the head gssket on my car. Having sent this video I stripped the head. Skimmed and hot washed Polished up all the valves and lapped them in. The head looked amazing. As you say its timely but very effective technique
Hey Milan, been a sub for ages now. I like the fact you're cleaning it despite the fact it'll get dirty. However, I'm concerned they won't seal as well as they used to because you are removing media around. That's what sanding and polishing does after all. You've also removed material from the mating surfaces too.
Remember these parts do come with tolerance when manufactured.
I wish you all the best and still love watching you.
You show you have a passion for what you do and I'm sure nobody's opinion online will change that. Keep going.
If you want a cheap Bentley, speak to hoovies LOL
The very second he started sanding I began laughing. I had no idea misshapen valves improved engine performance
Love your Chanel your actually my only subscription... reason I’m doing the exact same project . 2009 jcw same problems that your having . I did a diy polish on the head runners . Got WAY STREET CAMS . And upgraded turbo cartridge . Didn’t want big turbo .... r56 get a little volatile in my opinion. My name is Mark and I’m a full time heavy equipment mechanic just fell in love with driving minis and appreciate your videos
wow amazing work! i want to do use Valve Grinding & Lapping Compound, should i use it after or before polishing?
Professional machine shops will only walnut shell or soda blast valves. The point is to remove all deposits but not remove any metal from the stem and face. You have changed the shape of the valve by sanding it.
Jarrett Barnett yea i think you're right cuz by sanding the valve stem,it makes it thinner & will make the valve loose when installed right?i would do everything from this video,except polish/sand down the stem.
Jarrett Barnett im thinkin valve stem seals are rendered useless now that the stem is reduced...well but that depends how far up into the stem he sanded too. The valve face/machined angled cut is now rounded off im sure. It does look nice n clean though.
Do you fucking know that by far he take out microns? it will not affect anything and lapping seats and valve will seal it properly again. Also is true that many did not noticed any difference in polishing but many experts said that is good for less carbon to stick to the walls. I guarantee that if you take apart those valves after 5k they will be brown, stock will be black again! Also depends of the carburation and flow. This jobs are recommended only to who want spend time, if you go to any shop they will Never do it, the labour will be too expensive.
Bobby King many machine shops will do this intensive and meticulous labor...however they do rematch the valve angles to the seat on the head otherwise these machine shops could not offer warranty on workmanship and proper operation of the head. This super important when an engine has force induction. Top dollar like you said but no machine shop will rebuild cyl. Head without matching the cuts to the seats. Agreed minimal-none carbon will stick depending on octane levels.
Bobby King The issue is not polishing the face or the back side. That part doesn’t matter as the machine shop will cut the valve seat correctly. The issue is polishing the stem. The valve stem is pressed into a machined bushing and has very tight tolerances. If you take metal away the stem can now move side to side as well as up and down.
Also, please find an English language book ASAP.
If I may recommend, use scotch Brite to remove the carbon and 3k grit paper to polish. The more you sand and polish on the stim, the more clearance you create in the valve guide, which might be bad.
Fantastic work!
Wow, this is going to save me some money. Looking to rebuild my 95 v6 vortec engine in my blazer. Glad I found this.
Please no
I would do this on a display piece or a car parts art piece. Not for functional use. This is about as useful as polishing the inside of your differential cover.
Cool, if you're gonna use the valves in your living room or somewhere to admire them. In an engine you should give the head to a shop to relap the seats and relap your already screwed valves... Then compression test the cylinder chambers.
Great and very helpful straight to the point, is there’s any other method of cleaning your intake valve without getting them out ?
You simply the BEST! With high grade and respect from Russia!!!
It's been a year since your comment. Did your car blow up using this procedure?
@@pattygq yeaaa! I was made 3 different motors to my friends,and clean all valves!!!
Also, I can't see that this would hurt as long as polishing does not occur on the stem. I would be worried about the oil clearances on the part that enters the guide. But as long as its just the head, that is fine. You can get a performance benefit because polishing will help keep carbon from sticking to the valves. The same can be done to the combustion chambers and ports. Great video.
You should sand the camshafts and head surfaces next 😂
This guy's bright
Sharpest crayon in the box.
Awesome video bro thanks 👍👍👍
Great vid and very true, one time my motorcycle wouldn’t start because of a
Valve problem.
RECIFE - Brazil here...
What about lapping the valves? Making sure they still seat well with the head.
Same here. Also im just a little worry with the end he tighten the drill chuck too. Drill chucks sometimes have teeth to grab. I don't know if his has them. Im just afraid if it does. That the "teeth marks" would damage a valve seal
The lapping part will have to be done when reinstalling everything back in the head
milanmastracci did any damage happen to the valve where you tighten the chuck to ?
Nope, none what so ever :)
And nobody has said anything about him sanding the valve stem🙄 i machine heads for a living. You don't want to polish the intake valves on a port injected or carbed engine. But yes polish the exhaust valve's that's good. It helps reflect some heat away from the valve and valve guide😏😉
Wow, WRECKED them (can't believe I watched this)
I never even watched it. Clicked on video, paused it, scrolled down to like ALL the comments about this guys major and utter failure
Excellent contents, regards from Mexico bro...
cool.. I m doing mine right now... perfect!!!
next video .. asking why are my fuel trims so low . my does my O2 keep reading off .
Drill chuck scratches valve stem --> crack growth site in the metal ---> valve drops
Keep it up Milan , hello from Romania !
Great videos. best on yt for the mk4!
why would you do this? It is like cleaning inside of exhaust!
You mean I polished the insides of my muffler for nothing????
It is a bigger waste of time than cleaning the inside of the exhaust. You aren't ruining the exhaust bu cleaning it. Doing this to your valves is doing permanent damage.
@@skyboy1956 yes exactly 😆
What about the valve seats not matching up now?
Thats what joke is
Awesome video man
Nice effort Milan 👍👍👍
Awesome attention to detail! A lot of people half ass things. I guarantee if you lap those valves it will seal perfectly. Great job!
You definitely should have a good catch can setup for any direct injection motor if you don't want to see crap build up again.
As a tip, you only need to clean/polish the part of the valve that sticks out of the guide. Do it then you'll have a loose valve that wants to kiss your pistons. Also don't ever touch the valve edges where it seals with the head because if you shave a lot of material it'll be hard to fix it with lapping only.
Oh I couldn't agree with you more!!
There's no way any polishing can cause valve-piston contact. The keepers hold the valve up top to the coil spring. The coil spring constantly pulls the valve upward away from the piston. There's no way for them to kiss.
true
this type of refurbishing is damn good to convert working engine in to home furniture, will look really awesome, don't forget to buy ticket for public transport!
Nicely done
Great Idea but I’d recommend lapping the valves after otherwise the valves won’t seal.
The chuck could damage the valve stem.
Sanding the valve stem where its in the guide will make it loose..
Sanding the valve sealing face will require it to be lapped.
Easy to follow. Thanks.
Hey I want to change the stock valves in my 223cc wildcat engine with stainless steel valves. Which sizes should I get? I have 32lb springs.
Even if you did regrind the valve seats (wich you have completely destroyed) and you didnt touch the valve stem, you still have to worry about how broad the valve seats become (regrinding always makes them a little wider) if that is out of spec it might either overheat your valves or not seal properly. Dont worry about that after touching the valve stems though , because by then you have just completely fucked up and are free to get new ones.
This is wrong please nobody do this. None of your valves will ever seat properly again
The finish is outstanding but you should have given a (put this engine on the dino) hp output before and after doing this to see how significant the engine will benefit from this. My question though, you do get a uniform sanding on the rotation of the drill however the valve face is precise angle cut in relation to the valve seat. If not carefull or a bit to much squeeze on the sanding paper may affect the angle cut (rounding off an edge). Can this affect the seal of the valves thus affecting compression?? My other question is even if carbon is completely removed off the valve, how can you get the same results for the valve seats on the cyl. Head??
Thanks for showing this entire series! I have binge watched the whole thing on my day off. Owning a mini it’s awesome to see a complete breakdown of my engine only now I wish I had an engine worth doing all this too!
abbrasive + valve= out of spec valve + leaking valve face / stem seals
Important!! remember to lap the valves before you put it all back together as your valves won't seat properly.
This a great video keep it up
You sir, are a pro....very nice video
dude read a book or take an engine machine shop class before "teaching" others. The grain structures of the valve and seat are ground together and lapped so they will in essence fuse and make a complete seal For a split second during combustion. Second that valve has a cam on it the rotators are moving it so that same grain structure won't over heat in spots that'll lead to a blow out of valve. Look up a video of ringing in a gage block. Same concept. Powertrains are the most temperamental aspect of any type of mechanical unit, and it's a science. I'm not trying to sound like a pompous ass but dude keep the scene " oh bro it's so clean fam" shit on the side or else you're gonna be junking a project you dump thousands into. Also ~ learn something new every day~
I find this so funny because this guy also tells us to spray paint our fucking brake disks! idk if this channel is a joke or not lmao.
At least learn something else about what not to do everyday lmao
I guess all the guys that lap their valves are killing their performance then by changing the grain structure?
Next video, polishing the valve seat. Hahaha
rude. more like guy badman.
Mine were so shiny, that the air flow over them sucked the guts out of my air filter....
I can't wait to hear that engine sound you have to make another video with valve in action jajajaja lol
Wouldn't be easier just to buy new valves or do thwy have to be lapped as well before installing?
Just asking cause i might need to do this to my 2000 dodge dakota 3.9l v6 cylinders.
Great video! I can tell you put a lot of time and effort into the video, so thanks. Because you are spinning the valve on the drill, it will remain (for the most part) the same shape. Just make sure that when you reinstall the valves, you lap and grind them to fit the valve seat (something that you should be doing anyway). Remember, valves need to make a perfect seal with the seat in order to hold compression. The valves look great! Cheers!
Your valves look great! Shame they are useless now
Would you have to do anything with the head if I polished the valves to this degree for them to seat right?
Thank you😁, it's so good
I hope they least lapped the valves. But I just buy stainless Steel valves and have it port matched by my machine shop.
Hey I have a really weird idea but maybe after polishing the ports and valves you can ceramic coat them which in turn makes the air flow faster
I never realized how many expert mechanics are on youtube
Haha shit worked great came out just the way it shows in video! Thx!!
You missed April 1st by 4 days
When you out the valve into the drill, put a piece of tubing over the end that goes into the drill so you don't screw up the metal on the valve when the drill clamps
Great point
Good video I'm sure you know the valves and head will need to go to a machine shop for a valve job now. But I like it nice work. I do a similar process but I stay away from the seat area and don’t do that much polishing.
Best method to make the shiniest and smoothest paperweights. Can be used to crush nuts, draw a circle outline, a keychain,Christmas ornament, or bookmark.
No man no no no no
LOL, he did it. just be glad it's not your car :D
Broken Motor Wagen NOT SOMETHING YOU’LL GET FROM A NORMAL MECHANIC SHOP!
@@lukereilly4963 and that's a good thing!
R.I.P valve seal :(
this brings new meaning to port and polish lol
I use ChemDip to soak the valves first. This loosens up most of the carbon and makes it easy to just wipe off. If you don't have a media blaster like in the video, I'd recommend doing this first before sanding the valves.
So you going to do this every few thousand km because it will look back like it was before by then
No, don't sand the stem or even scotch bright it. Also tape the stem before you put it in the chuck otherwise if will possibly get damaged by the hardened teeth of the drill chuck.
Any metal removal from the stem is bad and will cause oil consumption and shorten the life of the valve.
Otherwise not to bad.
Oh my...you made me want to open up my engines and polishes everything in there! Haha. My hands are itching but, my dad might kill me for doing so. I stick yo polishing his tools instead. That is, for now.
@milanmastracci Do you think Is it safe for the engine?
LOOK GREAT! Now toss them in the trash and go buy new ones with proper clearances.
He sand blasted his valves??? Is he mentally deficient?😂😂
Do I need to check the seal and grinding the lap of valve after doing this procedure ?