[Diy_efi] Thermal barrier coatings

[Greg Hermann]

At 3:52 AM 1/21/03, Ohio Benz wrote:

Among the more interesting coatings I have come acrross are from Ni-Met
Industries (Gary, Ind.)

They do a teflon impregnated anodizing (RC 70 surface hardness and _VERY_
slippery) which is neat for pistons (skirts, pin bores and ring grooves).

Also, a teflon impregnated carbide coating (also very hard and slick) for
brass/bronze/copper alloys which might be pretty interesting for the ID of
valve guides and possibly also for con rod small end bushings.

Greg

>Tech Line Coatings sells a full range of ceramic, dry
>film lube and other coatings for temp barrier
>applications.
>I have applied the ceramic to piston tops and would
>recommend that you also do the combustion chambers and
>valve heads. BTW I applied this to forged pistons.
>The application seems simple enough, but proper
>cleaning, grit blasting and access to an industrial
>oven for 600F baking is required.  It took me several
>tries to get a thick enough coating as recommended
>without it flaking after high temp curing,
>They have header, brake caliper and a variety of other
>coatings capable of withstanding very high temps.
>If anyone would like a pic of a finished piston or
>combustion chamber contact me offline.
>
>=====
>Jerrit Ekama
>
>OHB Tuning
>Custom fabrication of performance parts for your Mercedes, VW, BMW, Audi.
>U.S. domestic and foreign vehicle repair and maintenance.
>Powder coating, Anodizing, TIG welding, CNC machining services.
>IM: OHBenz
>
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