Alright, phase 1 is complete. I've done a lot of this so many times that it's kind of fallen into the "no big deal" category.
First of all, I apologize for the crummy/fuzzy iPhone photos.
As I mentioned, the first step was draining the coolant. In the less than 3 years I've owned the car, I've done 2 full coolant changes and several partial changes, so this time I just brought it down to below the level of the head. I opted not to remove the heater valve or thermostat housing this time-I just disconnected their hoses.
From there, it was time to start taking stuff off.
First, the carburetors come off to leave the bare intake and exhaust manifold.
View attachment 764837
There are 4 1/2" nuts backed by big fender washers that hold both the intake and exhaust in place. One those are removed, the intake manifold pulls straight off.
From the factory, the two ends of the exhaust manifold were also held on with studs. Everyone replaces these with 1/2" head bolts to make the exhaust manifold a lot easier to remove. As long as the engine is to stay in the car, the exhaust manifold just has to be unbolted from the head and not removed completely.
From there, the valve cover came off.
View attachment 764843
The keen-eyed viewer will see an obvious issue here-the oil coating the rockers is "milky" looking. This indicates a breech between the oil and coolant passages, and is a sure sign of a blown head gasket. This obviously happened the last time I drove the car, as I hadn't noticed it previously.
In any case, I skipped photographing a few steps, but the rocker shaft comes off(four nuts for the shaft itself, four that also double as head bolts). Then, the rest of the head studs came out. This is probably bad of me, but I used an impact to zip these off. The pushrods also come out-these just pull out with a small "wiggle" to make sure the tappets don't come out with them.
With the rocker shaft off, the engine can be "bumped" a few times with the starter to use compression and help break the seal between the head and block.
A bit of manhandling later and off it comes.
View attachment 764849
Just to check the valve condition, I put kerosene in each of the combustion chambers, and didn't observe any appreciable leaking.
View attachment 764850
I can then turn my attention to the gasket.
It's difficult to see, but just as I suspected there's a small breech in the fire ring between cylinders 2 and 3.
View attachment 764851
View attachment 764852
I did a bit more clean-up work tonight. I basically just used a paint scraper to clean the loose crud off the head and block, but that's it. I also used a tap to CAREFULLY chase the stud holes in the block and blow them out with compressed air.
The rule of thumb is that factory studs never go bad, but for peace of mind I spent the money on new studs. Unfortunately, there are no-inbetweens on MG head studs-either you re-use the factory studs or you go whole hog and buy racing grade ARP studs at $100+ a set. I'm waiting on those to arrive, but I think that once they're here I'll be ready to button it back up with a new gasket.
Start to finish, this took me about an hour. I guess-as they say-practice makes perfect.