Quote Originally Posted by ted dehaan View Post
the spark plug transfers heat to the cyl head to cool it if you use the wrong seat plug for your you limit that heat transfer your plugs maybe getting too hot causing pre ignition or pinging ......ted
Understood, thank you

The plugs I was using before were not even making it into the comb chamber, they were too short! Don't ask how those got in there...

The question regarding tapered seat vs. gasketed seat (same thread depth) is in regards to the *colder* plugs I have been able to identify that will work with my application, the only difference is they have gasketed seats vs. the tapered seat plugs I am running now - not sure if that would be an issue or not, I suspect not but would like to hear from someone that knows for sure