DLC coated lifters
11-10-2010, 03:42 PM
#2
GregB sells them completed. Noticeable difference even just turning the engine over.
11-10-2010, 04:42 PM
#4
Archive Gatekeeper
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Greg put a set in my engine. No idea whether they make any horsepower difference (not about to do that particular dyno experiment 
) but they're like fricking mirrors. Give him a call and he can set you up.
) but they're like fricking mirrors. Give him a call and he can set you up.
11-10-2010, 04:56 PM
#5
Nordschleife Master
11-10-2010, 05:25 PM
#6
The reason I talked about turning the engine over is because after I was over there with you, I did the same to my engine, and turning just the cam cog does seem harder. It could be the brain playing tricks, but I sure like those "diamonds"
11-10-2010, 05:26 PM
#7
Trending Topics
11-10-2010, 05:35 PM
#9
Rennlist Member
Quoting from Wiki:
As implied by the name, diamond-like carbon (DLC), the value of such coatings accrues from their abilities to provide some of the properties of diamond to surfaces of almost any material. The primary desirable qualities are hardness, wear resistance, and slickness (DLC film friction coefficient against polished steel ranges from 0.05-0.20[5]).
However, which properties are added to a surface and to what degree depends upon which of the 7 forms are applied, and further upon the amounts and types of diluents added to reduce the cost of production. In 2006 the Association of German Engineers, VDI, the largest engineering association in Western Europe issued an authoritative report VDI2840[6] in order to clarify the existing multiplicity of confusing terms and trade names. It provides a unique classification and nomenclature for diamond-like-carbon (DLC) and diamond films. It succeeded in reporting all information necessary to identify and to compare different DLC carbon films which are offered on the market. Quoting from that document:
These [sp3] bonds can occur not only with crystals - in other words, in solids with long-range order - but also in amorphous solids where the atoms are in a random arrangement. In this case there will be bonding only between a few individual atoms and not in a long-range order extending over a large number of atoms. The bond types have a considerable influence on the material properties of amorphous carbon films. If the sp2 type is predominant the film will be softer, if the sp3 type is predominant the film will be harder.
As implied by the name, diamond-like carbon (DLC), the value of such coatings accrues from their abilities to provide some of the properties of diamond to surfaces of almost any material. The primary desirable qualities are hardness, wear resistance, and slickness (DLC film friction coefficient against polished steel ranges from 0.05-0.20[5]).
However, which properties are added to a surface and to what degree depends upon which of the 7 forms are applied, and further upon the amounts and types of diluents added to reduce the cost of production. In 2006 the Association of German Engineers, VDI, the largest engineering association in Western Europe issued an authoritative report VDI2840[6] in order to clarify the existing multiplicity of confusing terms and trade names. It provides a unique classification and nomenclature for diamond-like-carbon (DLC) and diamond films. It succeeded in reporting all information necessary to identify and to compare different DLC carbon films which are offered on the market. Quoting from that document:
These [sp3] bonds can occur not only with crystals - in other words, in solids with long-range order - but also in amorphous solids where the atoms are in a random arrangement. In this case there will be bonding only between a few individual atoms and not in a long-range order extending over a large number of atoms. The bond types have a considerable influence on the material properties of amorphous carbon films. If the sp2 type is predominant the film will be softer, if the sp3 type is predominant the film will be harder.
11-10-2010, 09:34 PM
#10
Three Wheelin'
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FWIW.... anyone considering the DLC coating on lifters should check with their DLC vendor to ensure that the coating is compatible with the surface finish treatment on the cam lobes being run on the coated lifter.
In a nutshell, there is no universal "best" coating / surface finish for one side of a sliding mechanism without considering the mating part.
In a nutshell, there is no universal "best" coating / surface finish for one side of a sliding mechanism without considering the mating part.
11-10-2010, 09:54 PM
#11
Nordschleife Master
11-10-2010, 10:32 PM
#12
Nordschleife Master
02-04-2011, 10:48 AM
#13
2nd Gear
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Hello to the post,
just wanted to recommend these guys on DLC coating.
www.dlc-coating.ca
They did a great job on shaft I have asked to coat.
Look at their first page there are pictures of engine parts coated, very nice looking.
Cheers,
Terry
just wanted to recommend these guys on DLC coating.
www.dlc-coating.ca
They did a great job on shaft I have asked to coat.
Look at their first page there are pictures of engine parts coated, very nice looking.
Cheers,
Terry
02-04-2011, 12:15 PM
#14
Three Wheelin'
