Spark plug gap

[Jeff sherwin]

What is the gap for a B10ES on a yamato 302?

[ZUL8TR]

Per http://www.yamatoracing.net/y302manual.pdf gap is 0.020" but not for the plug you note but that gap would certainly work. I would prefer wider especially with CDI that can handle it, just be careful with the earth ground electrode not hitting the piston top. Some 302 racers need to assist here.

[Matt Dagostino]

Jeff..........nice meeting you last weekend at Thompson. .025-.030 works. I believe they come out of the box right in that ballpark. Matt.

[Jeff sherwin]

Thanks for the information. Matt nice meeting you and the rest of your team.