Dan---The problem of not being able to get one or more studs out of the
head/block comes up every now and then here on the list. I'll give you a
few things to try in the order of the easiest (and least likely to break
the head free) to the most drastic.
1) With the radiator and fan out of the way, the bolt that holds the
dampener to the crankshaft is exposed. Put a socket on this nut (1 1/8"
I think) and with a long breaker bar you're going to turn the engine
over, clockwise as it would normally turn, to where the marks on the
timing pulley show about 30* BTDC. Before doing so take out all the
spark plugs and feed as much 'clothes line' rope as you can in thru the
#1 and #6 spark plug holes. Pre-measure the rope, so both cylinders get
as equal an amount as possible. (Leave some hanging out) Now with the
breaker bar on the crankshaft bolt, turn the crank clockwise with force.
Both of these pistons are coming up together, and the rope should force
the head up, or at least enough to break the 'seal.'
If you can't get enough leverage this way, you can also raise one of the
rear wheels off the ground, put the tranny in gear, and turn this wheel
in a direction that will keep the engine turning clockwise. Rocking the
wheel forward and back may allow a 'running start' at forcing the
pistons up. If the engine turns over center without breaking the head
loose, you don't have enough rope in there. Lower the pistons and feed
in more. It's highly unlikely that you will damage the engine any, as
normal combustion forces put more strain on rods than anything you can
do by hand.
If neither of the above pop the head up enough to continue the removal,
you may have to take the engine out, take out the crankshaft and
pistons, and give the head a whack by going up thru the piston bores.
Not being able to remove the studs is what makes it most difficult.
Sometimes a torch on whatever is showing on the studs can persuade them
to let go of their grip, rust being the likely culprit here. You
probably would rest easier if you took the engine out and gave it a good
look. If it hasn't ran in a long time, there could be other areas that
need the kind of attention that only engine removal can provide. Let me
know how you ultimately get the head off!
Dick T.
'73
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