Well, when I came to replace the head on my '57 MGA, I found a problem: some
of the pushrods would not go back properly. After removing the inspection
covers, it turned out that when I lifted out the pushrods, some of the
tappets came with them (held by suction) and dropped back out of place.
This was actually, lucky, because when I inspected the tappets, I found some
pitting, so I replaced all of them.
Chamfering the block turned out to be a moot point. The head studs did not
want to move -- despite soaking for a day with PB Blaster. Perhaps a blue
wrench would have shifted them? I did not put too much torque on the studs
since the last thing I wanted was a sheared stud.
During the disassembly process, I found that the exhaust manifold was
fastened to the rest of the exhaust system by only one nut.
I reassembled with some copper gasket sealant on the head gasket.
It seems to be working -- running nicely. I guess, I will have to re-torque
the head and re-set the rocker clearances after some time.
Simon
|