Whats used to plug smog hole on 88 heads
Well, we removed the smog tube and hardware for our build and just wondered what's being used to plug the holes up. Mine happens to have 2, one in each head at the rear edges. Looks like a small ovalish plate with a hole drill for lock down bolt and maybe throw in the gaskets that were supplied in the gasket kit to make the seal.
Maybe a bolt with a head thread tapping? What size tap would be best to use? Would a brass plug or stainless steel be best?
Thanks