Can someone post up the plug length highlighted by the ? on the attached drawing. I need it for some customs leads but don't have access to one to measure.
I've just been out to measure for you, and as I stepped out the door it started absolutely tipping down - so I came back in again. I'll go back out if it eases up.
Now I need a slightly trickier dimension and that's from the top of the installed spark plug head, as it sits in the engine, to the top of the cam cover lip, (so I know how far the plug sits up inside the plug lead).
Not taking anything for granted with custom leads, if they get em wrong it's gonna be annoying!