You can't go wrong with Lake. Always interesting. Thanks.

The plasma spray has been used in industrial diesel engines for years. The company that invented it makes hand application units for doing main tunnels. There is also a deck resurface machine that can do over 20 thou of deck addition to save a big engine block. When the diesel engine is $1m you would rather keep rebuilding than buy new.

What a great presentation. Thank God us older gear heads can understand this technology. It is absolutely the best of modern engineering.

I've experienced seeing these types of liners during my factory training at BMW years ago with the Nikasil, and it also reminds me of the Honda B21a engine back in 1990 with the FRM (fiber reinforced metal) cylinders. Both were extremely smooth, definitely different looking to the naked eye, and almost no crosshatch at all. Oddly enough the Honda FRM would eat rings like crazy and you would have tons of oil consumption and black smoke once it got to a certain mileage, but I never did experience ring wear with the BMW's. Thanks for the detailed info about working with these liners. 👍👍

Fred Catlin has 455cid Buicks done this way. Back in the early 1990’s Ole Fred was the champion - undefeated

many years ago I worked for Textron , Homelite division. We used anodized aluminum for the bore and used a grit blast process to make the pits for oil retention. It worked.

Lake is so awesome, he’s upped our hobby’s knowledge exponentially!

Always on top of the best IC engine technology Lake !! 💪🇺🇸

Great video. Lake, could you please speak about ring break-in, and maybe ring material/alloy, for SumeBore sprayed cylinders?

You are on it again Lake...

Greetings from Concord, NC! Thanks for this video. I’ve recently gotten into the hobby of rebuilding old Suzuki race motorcycles and knowing they have a NikaSil coating, this info will certainly serve me well down the road if I should ever have to do any cylinder work. It’s cool knowing how the Plasma spray bore coatings work. I’ve learned a TON from your channel and your videos!! -Josh

Cool. I had no idea you even could hone a plasma coated bore. Absolutely makes sense to use a very fine grit. Thanks for the video!

This is sorta like what we would do back in the day when you would do a re-ring and bust the glaze. Just amazing how far we’ve come !!!

No matter what the topic, When Lake brings a video, its going to be great. Thank You Lake, All of the love in the world to you. Now to figure out of the new Mobile-1, 0W8 is a good oil compared to Pennzoil 0W16.. The cost is higher, but usually the addicitve package isnt as good as Pennzoils. Would love feedback on it.

This is a great video! I will watch your other video about SMEBore on your boxster engine next. I have a Lokasil engine in a Cayenne that has massive bore scoring. Seems like it might be a candidate for this process...

Very interesting, had never heard of this

Thanks for posting. I learn stuff from your posts lake. Ive owned the total seal profilometer, computer since they first came out. I used to hone a bunch of spray bore coyotes 8-9 years ago and had a profilometer at that shop but wasn't doing them correctly after watching this lol.

I'd like to see a test of a glass bead blasted cylinders with various types of piston ring material. Used cylinder bores . Instead of using dingle ball hone for clean up on a rebuild.

Very informative. More of aerospace materials.

Awsome brother!!! I have been wondering about the the new 5.0 Coyote engines. I have been hearing about spray bore in the 5 liter and was thinking they may be disposable blocks. I guess not. Thank you for the info.

All I can say is, WOW!

Whats the longevity of this surface compared to current methods of honing that are being used and the difference in cost? The visual image in my head is the standard crosshatch doing better at containing a controlled amount of oil. Interesting process.

Twin wire arc cylinder coating was developed by AMG, first used on the M156 engine block. World first.

I find this interesting because period blocks can be reconditioned instead of discarded. Plasma holds where a colder "spray-weld" process might fail.

Just out of curiosity from watching these bore finishing videos, would it be right to think that if you a very smooth finish (1000 grit sand paper) its those valleys depths that are important to hold enough oil?wouldn't the rings aquaplaning if the surface is too smooth, how would the rings bed in? Dry or wet start up in a break in period?I came across some chromard liners from isuzu and they are very smooth,and they last ....

Where does one get this done? I see potential!

Lake, another good one. Question, can this process be ised on other machines surfaces? Crankshafts or cams? Thanks again for the great info, Chip

,,, thank you ,,, !

So you can't really bore and rehone making say a coyote block a throw away with a small scratch ect? How much would it cost to overbore and re-apply? Does Total Seal have specific rings for plasma bore?

how does this spraying? can you take a sbc bored 40 over and bring it back to stock size?

Where can you find a list of builders that can apply a plasma spray cylinder coating?

Can overbore LT blocks be coated with this stuff?

Thanks Lake... great presentation: So, it would appear that the Plasma/Sumi bore cylinders wear incredibly well.... And hold oil at the same or better level than a deep RPK iron bore.... In the end, a superior bore in terms of wear, or at least it would seem. In search of better durability in builds for my customers where quality/durability is worth spending more on, using what is typically a "conventional V8 iron block", are there any pre-plasma-coated liners/sleeves that can be installed in a block... that is 0.010"+ undersized... and taken to size using the stepped honing method from rough to 1200-diamond to bring this tech and wear property to older iron (or aluminum blocks for that matter) @TotalSeal .

Hey Lake, where or who does the plasma spray bore or Sumerbor coating application? Also, is there soneone close by who can hone it to the correct finish and any contacts would be appreciated?

interesting to see the Porsche cyl Lake, but Harley sells hundreds of thousands of bikes in US alone. I think their cyls have a similar coating. Could you pls do a vid on them? thx.

Can you spray other things ? Piston skirt?

How is it different from Nickosil? On 2stroke dirt bike engines it is nickasil applied on aluminum cylinder

Does Ford use spray bore in all of their engines or just the Coyote? What about the 3.5 Ecoboost?

The problem with the high tech coatings is cost. Stuff has gotten so expensive at machine shops that they are folding up and closing from a lack of people being able to afford their services. I know I never had a motorcycle cylinder replated they got a sleeve so they could be bored out several times.

Am I guessing right in that they clean up the bore due to contamination of the porous surface, that it's not circulating oil with contaminants like traditional hone groves. Would it make it more critical with oil for street use (daily driving), I believe some oils can produce more (if I'm not mistaken). 🤔

So is Plasma spary is kinda the same as nikasil bore?

Where can you get this sumibore process done - in Australia in particular? Not the honing but the actual coating. Is this available?

Are the FR9 blocks from Roush Yates coated ?

I noticed your mentioning of CBN 1200 grit and later calling it Diamond. Diamond is crushed to size whereas CBN is grown to size. CBN is a much less contaminated grit. The world Premier maker of CBN is Poltava diamond Marching in Ukraine. I am testing some of their sharpening stones made of Bronze that is infused with CBN Throughout. While they are a world leader in Diamond and CBN machining tools tech. they are just now making their sharpening stones available here in the U.S.. If you contact them, let them know that KnifeMaker sent you. M.Lovett KnifeMaker/Retired after over 47+ Years in the Craft

Motorcycle 2 strokes use a cylinder coating ...why don't engine blocks use it ??

I've heard from a few sources that diesel oils used in gasoline engines leads to accelerated bore and ring wear. Think there's any validity to that?

How do we hone or clean up a cylinder that an aluminum piston seized in with a nicacil finish? Wouldn't a std hone clog the finish with grit & wear the new rings out or worse yet, clog the pores & cause lack of oil holding?

Then why do these plasma bore cylinders always score?

I have to believe the spray bore is a cost cutting measure only. Not only does it cut down production time and cost, but a damaged cylinder means the block is trash, where a standard liner can be honed deeper, bored, and replaced. Not to mention a nicasil liner is more rigid than just aluminum cylinder with a surface coating.

If i brought a block into a shop for a rebuild, would the average machinist know what this is and not to bore it oversized?

Looks like Chrome printing. Is this chrome ? I bet will be good for a lot nitrometh

This sounds awesome but you didn’t mention anything about type of rings to use, break in etc…

What would the ballpark cost be for having a block treated like this? Say a 3 liter straight six.

It’s seems like a very tough coating and works great in a hard running engine but it seems to degrade over the years. The Ford guys pulling their engine after 10 years find chipping at the top of the cylinders.

I'm starting to think that the big OEM's are making things more expensive just because they can.

Nikasil?

Sounds like another giant recall to me

Plasma spray bore, low tension piston rings, aluminum blocks and people wonder why these engine use soo much oil. What's great for race engines isn't necessarily great for street daily driven engines. I normally love Lake's videos. I'm not drinking the Kool-Aide on this one.

dd

Polish

Thank you for your knowledge and videos USA 🇺🇸 TRUMP 2024 2024

ya know , Mr. oil is knowledgeable enough to explain all of this on his own.... doing these type of (( visiting the pro's shop)) videos, it comes across like a infomercial.... he takes great logical and reliable info and and gives it a snake oil presentation.... Don't feel to bad, I notice the turbo diesel king of knowledge, G.B. leaning to a low karma style of badmouthing builders or manufacturers , ((by name)) ... Not sure where the idea's originating, but it's not working... now watch some SM racing engines videos.

Used spray bores are junk.

Until the engines at temperature! Unless you plan on honing the cylinders while the engine is at operating temperature, a torque plate is worthless.

Does the coating wear evenly with pinned rings? And is it pliable enough to not come off from jug flex like other metal treatments do? I ask because I wonder how well coatings like this would work in a 2 stroke engine, or a horizontal 4 stroke. The rings don't rotate on many 2 strokes, and the cylinder expansion isn't always symmetrical due to differences in port cooling. The reduction of friction and oil requirements would be more than worth it if it would survive that. Ring seal has been an issue on 2 strokes for years, and if it would work on that. There is a huge market for this in lawn care 2 strokes and air cooled horizontal 4 strokes that suffer from odd cylinder expansion issues, that kill the rings in short order.