Howdy all, Just checking to see if this is common or not.
I am building a gx200 clone.
Had .065 taken off the head, chamber measures 15cc. However, it was obvious when I was cc'ing the head, the stock Chinese spark plug was protruding quite a bit below the deck of the head, about .045. I figured this was going to be an issue, as I only have .035 piston to head clearance. The piston is a flat top.
The Chinese spark plug is a projected tip, I believe a non-projected tip spark plug will work fine.
I know most run the 3910x, put it looks to be slightly projected into the chamber. Haven't measured one in my head yet though..
I haven't really seen much talk about spark plug to piston clearance issues, so was a little surprised to run into it.
I know I add washers and raise the plug..but was wondering what others have done.
Rick
I am building a gx200 clone.
Had .065 taken off the head, chamber measures 15cc. However, it was obvious when I was cc'ing the head, the stock Chinese spark plug was protruding quite a bit below the deck of the head, about .045. I figured this was going to be an issue, as I only have .035 piston to head clearance. The piston is a flat top.
The Chinese spark plug is a projected tip, I believe a non-projected tip spark plug will work fine.
I know most run the 3910x, put it looks to be slightly projected into the chamber. Haven't measured one in my head yet though..
I haven't really seen much talk about spark plug to piston clearance issues, so was a little surprised to run into it.
I know I add washers and raise the plug..but was wondering what others have done.
Rick