O-320-E 160 hp spark plugs?

[Chip Sylverne]

Been having some fouling issues lately. Don't know if it may be due to the break in of the new cyls. Not sure the A&P even looked at the plugs when he did the work. We pulled the plugs and dug out all sorts of ash and crap out of at least 3, and one was even bridged. Cleaned, gapped and reinstalled and runs much better, but the current plugs are at least 500 hours, so we're thinking it may be time to put them on the shelf.

Thinking about replacing them with Unison UREM38E's, because of the longer electrode. I hear they are better about resisting fouling. Does anybody have any feedback? Fine wires are out of the question. The prices are ridiculous.

And yes, we lean for ground ops.

 

[charlie]

New cylinders don't work well with used plugs. If you want fouling resistance without thew cost of fine wires use REM-37BY's. That's the "long nose" massive electrode plug.