Does anyone make a 5/8" hex, gasket seat resistor plug for our engines? Seems like someone posted a list of plugs and the specs for them not too long ago, but I've been searching and can't find it.

Thanks,
AV8TOR

Look these up?

14mm X 5/8" NGK BPMR6F or Champion RDJ6 or 7J but seems like they are all tapered. I'd have to go out in the garage and look?

My experience has been that I can interchange the tapered seat and gasket seat plugs on the same head or swap back and forth any time. This has been on McCulloch, Ryobi, and Homelite heads.

The "F" at the end on a NGK means tapered seat

The "DJ" on the champion means 14mm thread 5/8 hex and a .325 reach, tapered seat

<cite>www.ngksparkplugs.com/techinfo/spark_plugs/partnumberkey.pdf</cite>


http://www.spark-plugs.co.uk/pages/t...l/champjpg.htm

Yeah, the only 5/8" hex plugs I have been able to find are taper seat. I can machine a taper in the head of the engine I want to use a 5/8" hex plug in, but I would rather have a gasket plug seat if they make one.

Thanks,
AV8TOR

I looked around and all the 5/8 hex plugs were taper seat.

Thanks W8YE.

AV8TOR