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Why Coat Pistons?

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Coated Pistons

Modern pistons in competition engines are usually tough and reliable components but any improvement can give immediate gains in terms of power output and/or engine durability.

Problems encountered and Camcoat's solution can be summarised as follows:

Detonation damage to the piston crown shown as pin holes or worse.
Camcoat apply cermet piston coatings to the crown to increase the surface hardness.

Ring groove wear resulting in increased blowby and reduced power.
Camcoat's DiamonDyze ceramic anodising improves wear resistance even better than hard anodising.

Excessive friction between ring skirts and bore leading to seizure.
Camcoat have a range of high pressure lubricant piston coatings to reduce friction and prevent galling.

Excessive build-up of heat in the metal leading to differential expansions and seizure.
Camcoat have a unique heat dissipating coating to transfer heat from the metal to the oil where it is easier to manage.

Excessive piston to cylinder bore clearance due to wear or mis-machining.
Camcoat can build up the diameter of the piston by up to 100 microns.

We find the best way to improve the performance of a piston through coatings is with our thermal management triple piston coating system. A cermet on the crown, a dry film lubricant on the working skirt area and the thermal dispersant coating inside the piston all work together to balance the heat distribution throughout the piston. Full advantage is made when the combustion chamber and valve faces are also coated with the thermal barrier cermet material (See Engine Parts).

Our new DiamonDyze ceramic anodising process can be applied to existing pistons with no need to remachine as, unlike the alternative hard anodising, it does not add to the piston dimensions but gives a surface that is denser and harder wearing (Full info at www.camcoat.com/diamondyze).

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Call us on 01925 445003 • E-mail us at info@camcoat.com

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