Originally Posted by imidazol97
The lower intake has a recessed area for the o-ring. But the top compresses the rubber ring forming the seal.
Be sure the thermostat edge is in the slit in the middle of the rubber ring. When compressed the o-ring seals around the edge of the stat.
My question is whether the taper of the o-ring goes down toward the engine or up.
Ahhh ok, I was just unsure as it would seal using just the rubber ring, so I figured I'd use the paper gasket as well, so far no leaks so hopefully it stays that way.
As for the taper, I am pretty sure the tapered part goes in towards the engine, if you put the gasket on the thermostat and drop it in it should fit properly with tapered side toward engine, as long as my memory serves me correctly..