Several weeks ago I discovered I had a massive leak between my intake manifold and each heads, pretty much halfway back on each side.
I discussed this with Jeff Carter several weeks ago, and he thought if the sealing ribs embossed in the valley gasket weren’t flattened I might need to use a paper gasket.
He is currently unavailable. I have removed the old valley metal gasket and all surfaces are flattened as I might expect. I noticed the two center bolts on each side were not as tight as the rest. Not “loose”, just not as tight.
My current plan is to clean heads and valley in car to be spotless and use a tiny bead of red hi temp rtv on the engine, all around with a tiny circle around each intake. I’ll install that, install the sheet metal clips front and rear along with the insulation bags and tighten those down. I will then put circles (like o rings) of rtv around each intake port opening, install and torque down to 40 ft-lbs the intake manifold.
Am I missing anything? (I really only want to do this once!)
Thanks, Mike Moore
300H