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Very nice info. I had already picked up a set of Felpro gaskets part# MS90109, which I believe doesnt have the heat crossover blocked. Right at the center point of the gasket, there is an oval and a half moon shaped openings. The oval opening right there with the half moon shaped opening is the one I need to block if Im traking correctly. Right?

Also, one side of the gasket has a ridge built into it. Does this ridge need to face the head surface or the intake surface when I replace the gasket?

roe




correct, ovel hole under 1/2 moon shaped hole.

I always put the ridge up towards the intake. I put them on dry the first time. I have reused felpro intake gaskets up to 3x with a little rtv around the water ports after first install dry.