The famous 100/4 head gasket,
A common problem if you have two low compressions next to each other
you will find a blown head gasket between those two cylinders. Now
you have two choices remove head, surface and install original style
copper head gasket and studs and still have a problem. Two remove
head, surface head and install modern style multi steel head gasket
and hard studs and no more problems.
The 100/4 head is common for leaks, cracks and water leaks right
along the engine id tag.
While head is off I would recomend that you strip head, have checked
for cracks, install new hard seats, valves and springs, we always
install new bronze guide inserts into the original cast guides. This
way you get the advantage of the bronze guide and not the problems of
sticking valves that you get when installing a new bronze guide.
Like i have said many times would you rather be out driving the car
or working on it. Do it right the first time. Unless you just like
working out and lifting that hunk of iron on and off.
Alan, I would like to see how you get these times,
5 minutes jack up car, find jack stands, get drain pan,
drain coolant
10 minutes remove carbs
5 minutes remove rusty manifold nuts to pipe and do not
break any
studs, remove intake and exhaust manifolds
15 minutes remove rocker assy, push rods, radiator hoses,
hood
latch assy, head nuts, heater hoses, find help to lift the 80 pound
head and remove with out damaging the front shroud.
Total 35 minutes
In a perfect world with all the tools sitting right there, no
rust
and in a hurry possible but that never happens.
Good luck
David Nock
British Car Specialists
Stockton Ca 95205
209-948-8767
www.britishcarspecialists.com
.
.
On Feb 3, 2009, at 6:35 AM, kaynmike.bham@juno.com wrote:
> Thanks for all replies.Shop is backed up, so space for the car is
> limited-work
> will commence in 12-14 days. Yes, head will be off as first step. Do I
> understand correctly that IF the problem is a blow out between 3
> and 4 a new
> gasket is all that would be required, whereas if the gasket were
> intact I
> should look further afield? (Warped/cracked head or uneven deck?)
> Will verify
> the operation of the valves. Do I need new bolts/nuts? Last time I
> had this
> head off, someone said "DO NOT retork" while others said ..."a MUST
> @ 500
> miles." What's a cabinetmaker to do?
> Mike Gougeon 56 BN2
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