Thanks I have dealt with that plug on an fj62 on which I did a head gasket job. When it arrived from the cylinder head shop it was missing and I didn't notice until after start up. Thanks for reminding me to check this one I will certainly remove the plug and tap/plug it. Engine certainly needs resealed on this thing due to its age. I'm debating on going through all the seals, rear main, timing cover, side cover, oil pan etc. But I would really like to drive it a bit more to get aquainted with this engine.
I installed some 31x10.5 a/t's on it today that I had sitting around and changed the trans, transfer,front, and rear diff fluids. It rides much better with the new tires and looks better as well. Next I would like to do something with the exhaust leak at the air rail. I'm considering desmoging but don't really want to spend any money on the distributer recurve and carb job to do it properly.