FINE WIRE SPARK PLUG
Aviation Spark Plug With the most automated manufacturing processes and the most innovative spark plug in the aviation industry. Made in USA.
High Conductivity Copper Core Center Electrode copper, co-extruded inside a nickel alloy sleeve ensures outstanding heat and electrical conductivity while the nickel sleeve offers high resistance to corrosive combustion gases.
High Alumina Ceramic Insulator high mechanical strength, superior dielectric properties, proprietary protective glaze, provides high performance to conquer severe operational conditions. "Clean Collar" massive electrode "V" tip focuses heat to reduce fouling and enhance heat range control.
Proprietary Glass Center Seal 21st century 'fired in' resistor replaces the multipart screw, spring, carbon pile stack up used in competitive plugs and known to suffer from resistance value instability that can cause misfires, wasted fuel, engine roughness.
Nickel Finish environmentally preferable electrolytic nickel provides outstanding durable finish, superior corrosion protection, and extreme wear resistance.
Nickel Ground Electrodes aviation grade nickel electrode design focuses on minimizing sparking voltage requirements while maintaining specification gaps to ensure large, stable 'flame kernels' for on-time ignition and complete combustion.
Vacuum Infused Center Electrode proprietary, vacuum infusion process seals electrode/insulator gap providing stable heat range and superior center electrode cooling (heat flow to the insulator).
Hot-Lock Assembly intense pressure and heat create positive, zero-leakage, shrunk in seal between insulator and shell to contain the hot, high pressure combustion cycle gases.
Harness Wire Contact smooth, uninterrupted, oxide treated spring contact surface offers enhanced corrosion resistance, is chemically bonded to the fired-in resistor providing the ultimate harness/spark plug termination integrity and energy transfer.
Expensive for sure. Im getting faster starts on my Mooney. Think its running a little smoother lean of peak as well. Time will tell--those with Mooneys that have these installed with the Surefly ignition are having impressive results--I hope to go that route next.
I have been an A&P for 30 yrs. I have found Tempest spark plugs to be perfect every time. When I ask customers to replace their plugs they have all told me after their first flight with the new Tempst plugs that the engine runs so much more smooth.
First off, very quick shipment. The quality of the valves will be a test of the manufacturer and we will see what the service life is....but that has nothing to do with spruce
The Tempest Fine Wire URHM38S XL spark plug uses an 18mm gasket.
There is no difference. They are one and the same.
The correct fine wire model to replace the REM38E plugs is the UREM38S.
URHM38S would be the replacement fine wires for the URHM38E massive plugs.
RHM38E would be an equivalent to the URHM40E. The only difference is the 38 has the lower heat rating position.The URHM38S is a fine wire plug. The RHM40E is a massive plug.
7/8" socket, like our part number 12-01693.
Yes, massive plugs are gapped .016.