BMFC, Tiiming, and Coatings

[Shannen Durphey]

Please do.  I've heard some good results, and read more.  I will be
pulling the heads in a couple weeks, and I'll get a good look at the
chambers and pistons at that time.  This isn't a "quick and easy hp
gain" like lots of gimmicks, there's a damn site more work goes into
applying this stuff than installing a "fuel saving cow magnet".
Shannen
Programmer wrote:
> 
> Shannen,
> 
> Guess I'll have to look into this some more--I'm young and prejudiced to
> gimmicks, so I'll have to do some research on this. Maybe I can find someone
> that's working on this to throw on our dyno...be patient with me guys !!
> 
> Lyndon IPTECH
> -----Original Message-----
> From: Shannen Durphey <shannen at grolen.com>
> To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
> Date: Sunday, May 16, 1999 7:17 PM
> Subject: Re: BMFC, Tiiming, and Coatings
> 
> >Well, in answer to the last question, ceramic thermal barrier coatings
> >stick in the combustion chamber.  They've been around for years, and
> >are starting to gain popularity.  Here's a company that makes DIY
> >coatings, which some list members have used succesfully.
> >http://www.deskmedia.com/~techline/Index.html
> >
> >I have thermal barrier coatings and dry film lubricant in an engine I
> >run daily, and have had mixed results.  DFL is available on piston
> >skirts through TRW, and GM is now applying it to pistons for the 3.1l
> >engine.
> >
> >Shannen
> >
> >Programmer wrote:
> >>
> >> What about seat contact width ? Seat/valve contact location ? What kind
> of
> >> coating sticks to anything in the combustion area ?
> >>
> >> Lyndon IPTECH
> >> -----Original Message-----
> >> From: Robert Harris <bob at bobthecomputerguy.com>
> >> To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
> >> Date: Sunday, May 16, 1999 9:47 AM
> >> Subject: BMFC, Tiiming, and Coatings
> >>
> >> >Dave Vizard reports that simply coating the combustion face of the
> intake
> >> >valve lowers the intake air charge temperature by 60 degree F or more
> and
> >> is
> >> >worth typically two octane numbers increase in the effective octane of
> the
> >> >fuel.
> >> >
> >> >Remember that the intake valve face is exposed to combustion
> temperatures
> >> for
> >> >at least 50% of the cycle and reaches the same temperatures as the
> exhaust
> >> >face.  Further the back side temperature reaches 600+F in a normal
> engine.
> >> >The majority of the intake valve cooling comes from HEATING the intake
> air
> >> >charge.
> >> >
> >> >Insulating the valve from most of the combustion temperature
> significantly
> >> >reduces the intake valve temperature and reduces the amount of heat the
> >> valve
> >> >can reject to the incoming charge.
> >> >
> >> >The intake valve coating is so important that Vizard recommends that if
> you
> >> >only coat one thing, it should be the intake valve.
> >> >
> >