A lot of us have been running the very popular and primitive UREM40E and UREM38E spark plugs in our 4-cylinder Continentals and Lycomings.
I suggest you see if your engine is OKd to run the Tempest UREM37BY.
You can easily find them at Mcfarlaneaviation.com,Chiefaircraft.com, Skygeek.com,
etc.
The spark plug has the 1/2“ thread reach, and is 5/8”-24 for the harness.
It’s a wonderful plug in that has a projected tip which runs cleaner.
They foul less. And they are gonna be easier to clean and gap when the time comes.
Did a test by putting them in an O-320 and a C-90 in the 4 lower spark plug positions, and was impressed with the results.
The heat range seems perfect.
And the engine starts better and runs better.
A no-brainer IMHO.
Spark plugs
We use these plugs in multiple aircraft and it has solved fouling issues when taxing without proper leaning.
Last bumped by Anonymous on Fri May 10, 2024 3:35 am.