Tracked down a massive leak on my car to the previous owner plugging the hole on the pass side under the plenum with a penny and JB weld (which blew out).
I've got a sheet metal plate cut to plug it w/ silicon gasket, but what size is the thread on those bolts that hold it in place? They weren't on the car when I got it.
Follow Ups
EGR removal - what size are those bolts? - bstyleZ17:26:18 05/20/08