Originally Posted by
Rick57
What heat range plug would you recommend? I have always used a RB #6. If there is a solid alternative I would be interested in trying. The RB plugs are so expensive! I know changing heat ranges will impact performance. It appears several guys in the form use O’Donnell T97’s.
The 97T is a medium plug which is pretty close to the #6 plug you have been using. I personally like to run a #5 plug but my altitude and humidity are a lot different than yours. Maybe try a 77T and a 97T and see if they work for you.