Here are some things to check before intake use (F4B). Remove the intake, clean all mounting surfaces perfectly, check for any obstructions (dents, dings, somewhat pulled threads, junk on surface etc) Install side gaskets and place intake on heads with four bolts just to hold it in place, no real torque. Now carefully inspect the gap of the side gaskets, intake, and heads. Make sure the gaskets and head, and intake surfaces are parallel both front to back and top to bottom. Use a feeler gauge, flashlight, and mirror to do all this. While doing this check if the ports match up well. This can be done with marking compound, clay, talc and grease, etc. If the intake sides and head surfaces line up they will seal and you can use the intake. To install the intake use good clean side gaskets like normal, but have the front and real valley surfaces (block and intake) ULTRA clean. Lay a thick enough bead of sealer where the end gaskets USED to go, to make the gap and carefully install the intake. When using the sealer bead instead of end gaskets you must lay the intake basically perfectly the first time…it is pretty easy so don’t worry. Install the intake, torque to spec, and let sit for at least 16 hours, 24 is better, to ensure full cure of the sealer. Then run you motor and check for leaks like normal. When you have no leaks you are good to go. I have run MANY intakes with the sealer instead of end seals, and know of many other engine guys who do the same. Modern silicons work great for this but I prefer “The Right Stuff” for this task…it REALLY works great. Good luck.
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