Pistons and Valves

JET-HOT offers two coatings for pistons and valves that can be used together or separately of each other based on needs and some class regulations in racing.  Our thermal barrier coating (TBC) is applied to the combustion face of the piston and a wettable solid dry film (SDF) applied to the skirt.
Probably no part of an engine undergoes greater thermal shock than pistons and valves.  Yet this has no effect on the bonding properties of our TBC which has the same coefficient of expansion as aluminum. Particulates are bonded with an inorganic binder which is unaffected by petroleum products.  With a bond strength of 10,000 psi, this coating's non-porous cermet (ceramic & metallic) matrix improves flame travel and combustion efficiency as well as reduces oil temperature and prevents carbon buildup.  JET-HOT’s TBC process also prevents excessive heat from reaching the piston rings reducing radial tension loss due to the ring overheating.  Thermal barrier coating is applied to the combustion face of the valve air fuel mixture prevents overheating of the exhaust valve and heat transfer from the intake valve to incoming cool air and fuel, thus providing a denser air/fuel charge.  The process works equally well on both two-cycle and four-cycle pistons, and is applicable to new and used parts.
JET-HOT offers a solid dry film lubricant that is applied to the skirts of the piston to reduce friction and prevent scuffing.  This wettable matrix coating is a Molybdenum Disulfide based coating rather than PTFE.  Moly is a higher pressure lubricant and does not "cold flow" under pressures exceeding 150,000 psi.  Moly also attracts oil, keeping an adequate film on the part unlike PTFE which sheds oil. This coatings reduces piston to cylinder wall friction by over 10-times!

JET-HOT’s lubricant coatings are suspended in a thermosetting polymer binder which hardens during curing providing a permanent dry lubricant unlike break-in Moly, graphite, and other sprays or lubes.

Engine bearings, rocker arms, valve stems, camshafts, gear drives, transmission and differential gears, and other "wet" components are other excellent applications these coatings.