Originally Posted by dgordner
Not the crank. New eagle rods and Ross pistons. All ballanced. The engine worked like a top the first race. The only thing I changed from the first race to the next was the battery. Since then I have changes all the cables as well.
Sounds like a high rpm dead miss.
I'd pull the plugs and look hard at the
porcelin on the exterior of the plug or around the center electrode.
I miss like that will make it vibrate like the dickens, especially if its more than one.