Cmar
Well-Known Member
I always put anti size on any spark plugs I remove, there are some fancy non-metallic ones now for alloy heads, which still allow for correct grounding, in the old days with iron heads I just used copper grease. Alloy heads are always a worry but I thought the plating they put on spark plug threads these days was supposed to stop them sticking.Since it's the #4 cylinder, access is pretty limited, getting a drill, tap and heli-coil in there would be very difficult with cluttered clearance from above. No rust on the plug or in the hole, mine has an engine cover, so it wasn't rust. The galvanic response between the steel and aluminum is the culprit, so anti-seize would definitely help in any future spark plug changes. I asked the advisor if they were going to install a heli-coil, and he said "a what?".....and he had never heard of ARP bolts, but he's just an advisor, so.
It sounds like they will extract the plug, put in a heli-coil and reinstall the head. This really makes me want to pull any spark plugs in aluminum heads, apply some anti-seize and re-install, just to put some of the advantage on my side if they ever needed to be changed.
Sponsored

