i was taking a look at the z6 head i want to put on my y7, and remembered as soon as i saw it that it has an EGR port in the exhaust side of the 4th cylinder. since the y7 has no EGR i want to fill this port before i have the head ported and install it on my car.

trying to get some info on doing this. surely i am not the first one to do this. let me know what kind of epoxies or whatnot are good for this and how i should go about it. thanks