[Healeys] no compression 100

[David Nock]

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
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On Feb 3, 2009, at 6:35 AM, kaynmike.bham at 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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