taekat

I find that very intriguing especially considering the fact that pressed-in Iron sleeves is considered to be more consistent. I don't know any statistical data on how many engines are burning oil out of 100 but I do know that this was a problem with the early Triton motors as well.

Well I have not read any problems with 3.5L ecoboost. I do know that the Duratec 18, 20, 23 and 25 engines use a pressed-in iron liner. So this seems to be the only Duratec engine that is using this Plasma technology to line the cylinders. Perhaps Ford needed to cut costs on the motor to create a lower price and higher demand and/or needed a stronger cylinder liner for the turbos. Still, it's new to the duratec line but according to the posts here it is not new to the motor industry.

WarSurfer

The F150 Eco has pressed in liners just like all the other eco's. The tear down picture of the hero engine clearly shows the top of the thick, press in liners. The spray in liners are about the thickness of a human hair, it is very easy to visually spot one vs the other.

The gt500 engine and the 1.4l zetec are the only engines that advertise using PTWA.

engineermike

Just a side note, but it can be both. Some engines have been supplied from the factory with hard-coated press-in iron liners in an aluminum block.

Shan

I re-build small engines (single, inline twins, v-twins) day to day and deal with a lot of nicasil coatings/Electrofusion platings and hands down it is the best thing to ever be invented for a cylinder wall. Less friction, reduced wear, tighter seal, and HARD.

Engines that the air filter has failed in and the rings are wore out... The cylinder will show no wear what so ever. I've literally had to beat cylinders off from mud only to find the cylinders didn't wear at all.

Also these coatings can be applied to an iron liner... If you've got a cylinder worn out to the point of no oversizes and needing a new liner they can plate it back to specs if necessary.

engineermike

Yep. One time in an dirt bike enduro race, my buddy forgot to mix the oil in. He ran the entire ~50 mile race on pure gas. The ring was worn down to almost nothing, the piston was shot, but the bore was nearly perfect.

93Cobra#2771

iTrader: (2)

Wow. Although I had same Thing happen to my ryobi weed eater. It got so hot it literally locked up. Cooled down, swapped gas to correct gas, cranked it up and continued.

50 miles on non mix fuel is very impressive.

Randy G.

I have a Allison. Not sure if anyone here has ever heard of a Allison. But, they hold more outboard drag boat titles than any other manufactors. Anyway, I have a 1992 Mercury 2.5 liter 260 EFI outboard motor on it. It has nicom plated aluminum cylinders. If you scuff a piston and damage the coating. You can have that cylinder stripped and recoated or you can by a new aluminum sleeve with the nicom coating already on it. The rings wear out before the cylinders do. So, even though you can see an sleeve dont mean its a steel sleeve.

WarSurfer

If you look up the ecoboost tear down, it very clearly has steel sleeves - you can tell because the sleeves look like steel and the block looks like aluminum

Steel sleeves:


This is what a PTWA cyl looks like:




Based on the investment by Ford and the published cost savings, I have no doubt that Ford will be going to PTWA on all it's aluminum block engines. IF Ford had used PTWA on the ECO, you would find it in the literature. They aren't marketing it yet because they aren't using it yet - on the Eco. It is a very prominent part of the GT500 and zetec marketing.

Interesting read on cyl coatings:

http://www.uschrome.com/aluminumenginepaper.html

taekat

So the entire Duratec line is still using press-in liners and only their top of the line zetec and GT500 motors are getting the Plasma technology. Well here is a quote from a ford media release:

Here is a link to the quoted article above:

http://media.ford.com/article_displa...ticle_id=30443

Another article that talks about PTWA on the ecoboost more extensively:

Examiner.com: Ford's EcoBoost technology extends internal combustion efficiency

These articles seem to be saying that the ecoboost is getting the PTWA on its cylinders. Perhaps this is why they have not officially said "pressed-in liners" or PTWA because it is getting both?

WarSurfer

The first article says they are designing more efficient engines with multiple approaches, such as PTWA AND the ecoboost variants. It does not say the ecoboost is using PTWA yet. The inference is that they will be using it throughout their engines eventually. Introducing the tech means at least one engine will have it, not all.

The second article clearly states the nikasil coating is intended to replace the need for steel sleeves. Since every Eco that I have seen has steel sleeves, I'm led to believe that PTWA is not in use on the Eco yet.

Do you really think that ONLY the f150 Eco is getting PTWA and not the rest of the duratec line? That kinda goes against the economy of scale thing doesn't it? If the ecoboost had PTWA, you could type 'ecoboost PTWA' into google and you'd get something like this:

http://media.ford.com/images/10031/2...500_Engine.pdf

Clearly marketing the tech.

When you google ecoboost PTWA, those two articles, which say all Ford engines will be using this at some point, and THIS thread is what comes up...

Show me the Ford slick sheet that says the Eco HAS PTWA - you can't because there isn't one.

PTWA replaces the steel sleeve. That doesn't exclude some other type of coating in addition to the steel sleeve as currently offered, but as far as the elimination of the sleeve - a la gt500 and zetec - not on the Eco yet.