Ford's answers to the NHTSA 6.7 Investigation

NewsW wrote:

BenK wrote:


The pump surfaces are DLC plated, but don't know if every last square inch is.
Does anyone know and then ask if there is any data on corrosion of those non-plated
areas/components within the pump?
!!!

AFAIK, only the friction surfaces are coated as coating cost goes up exponentially when you are talking about 3D coating especially with inside surfaces.

Delphi, in one of their DLC bragging rights, talk about how they did a continuous process DLC coating that can coat 3D parts...


Think one of the "signs" of contaminated fuel used in the Ford TSB is corrosion inside the pump --- need to reread that TSB.

Almost certain large number of non-friction surfaces in the pump are not coated --- plain cost too much to do.

Sounds like they should have used Tungsten Disulphide. Used to have
my stuff plated by Diversified Dry Lube out of Tulsa OK, but they
no longer there

Cold process that plated 4-5 micron's and did NOT change the surface
finish. IIRC, inert and FDA approved (food grade surface), non-stick,
very low co-efficient of friction and very low cost. Really wanted to
coat everything inside one of my engines, but never got around to it

Found that stuff to solve a problem with some disc brakes designed for
a steel mill. Flakes of iron scale and iron oxide dust every where. The
caliper slides were sticking and this stuff solved that

Haven't been that kind of designer for over 3 decades, so lost touch
and don't know enough about DLC.

CVD diamond I know a bit as invented (or directed it's invention after
hatching the idea) diamond foam. Problem with CVD is that it is tough
to direct every molecule's placement. So rough surface finish. That
rough finish is exactly what we wanted for CVD foam heat sinks.

Again, ask why DLC is needed and what is the problem being solved?
Is it the piston and cylinder wall? Is it the cam and follower? or ???

Another topic to bone up on and don't have the time at this time...