Why is 6.7L Block Not Coated?
 

I know an OCD post, but was installing the plastic wheel well liners this evening and noticed the block is rusted already?

Yes, I know it would take a thousand years or more before there was an actual issue, but just seems to be a lame penny-pinching move on Fords part.

Has it always been this way? I know for a fact that my 6.9L was coated black. And yes that was the last time I had a Ford/Corn Grinder diesel.


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Funny that your not aware that is a Chevy paint code number. See they have been using that color for years. Infact, on a quiet night, it will turn that color all on its own.

Although it would be nice to see it painted, it's not value added in the eyes of Ford. Most vehicle owners couldn't point out where the oil cooler is let alone mind/know if its painted. It doesn't leak rusty water on a driveway and they don't corrode so bad it's unusable during the engines service life and that's probably why ford doesn't paint them. It's an added expense that doesn't have a purpose.

Ford found a way to save $3 on your $80k truck

Why paint it when in a few years it will just look worse with half paint, and half flaked off with rust under it? Then you or others would be on here starting posts about how their paint is flaking off and what to do about it.
6 of one, half dozen of the other…Ford is in a no-win situation here, so why not save a few bucks…

Pretty standard, no paint on the 6.7. The 6.9 IDI's were painted IH engine grey not black for reference.

Paint is just to look pretty on vehicles that sit in a garage or showroom floor. In the rear world it will flake off eventually and just look like crap.

I have to agree that Ford stopped paining the block to save money. I myself prefer a painted block. (old school)
( I am refraining from making the comment that all of the oil leaks will cover the block to prevent it from rusting)

In the old days when you could actually see the engine, it mattered...slightly. Even in your photo, you have to remove parts to get a peek to see just a small part of the engine. There is no cosmetic benefit to painting the engine. And there's certainly no engineering benefit for doing it.

Some metal alloys are naturally more corrosion resistant than others. I work in the high voltage powerline business and when we spec out steel poles they are usually galvanized or weathering finish. The weathering finish poles are designed to be bare steel that is blasted and then gets a uniform surface rust on them that protects the pole from further corrosion. As long as they are not continually exposed to water or corrosive environments the service life is decades long. These poles use a different steel alloy than the galvanized ones. Even the galvanized poles can have corrosion problems in the wrong environments. Poles that have been painted for aesthetic reasons often end up looking the worst. Every couple years they require cleaning and repainting or else major corrosion sets in under the paint. Basically becomes a maintenance nightmare.

So the $3 in paint that was saved on your engine may have went to a more expensive material in the engine. Just food for thought.

😂😂😂 but I didn’t buy a Heavy😉.

And I haven’t heard someone tell that joke in a long time, but always a good one!

Well not sure why, but I can assure you mine was black as I had the engine out of mine and worked on that damn thing often, looked exactly like this one:


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Understand, but was just surprised that it wasn’t, would agree that paint would not be good, but plenty of coatings now that would survive.

My one thought is any coating will act like an insulator, though minor it still prevents heat dissipation, but I’m sure it’s just a reduction of cost and time in another process.

Like I said not worried about was just surprised.

Agree, though I didn’t have to remove anything just was close enough to look through the opening.

It is funny though about seeing the engine… I bought a car years ago and asked the sales guy to open the hood. He gave me a strange look and afterwords said “I don’t have any buyers that ask that anymore”. Guess I was just aging myself😉

Yes, it makes my OCD genes twitch to see unpainted metal. There is zero functional detriment for that surface corrosion.

When I work on my stuff I clean, polish and selectively apply appropriate coatings for long lasting protection.


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