[Healeys] 100-4 engine head gasket?

[gradea1 at charter.net]

I used this on all the 100 heads that I assembled with a copper gasket
and so far no problems from any of them. It goes on very nicely and,
if the head and block is in good condition, should do the job. Hank

SKU 48-52355-1ALT #: 64-52355

PERMATEX COPPER SPRAY-A-GASKET HEAD GASKET SEALANT - 9 OZ. SPRAY CAN

0% of1000 Reviews Add Your Review [1]Low Price Guarantee [2]$14.99each

	-----------------------------------------From: "Alan Seigrist" 
To: "Michael Oritt"
Cc: "Healey list"
Sent: Monday January 25 2021 6:55:32PM
Subject: Re: [Healeys] 100-4 engine head gasket?

 Hi Michael - 
 Sounds to me the smart thing to do is put in a steel head gasket
because the head was rebuilt not that many miles ago, so I might have
a low spot there. The head is torqued correctly so that's not it. 
 Best, 
 Alan

 On Mon, Jan 25, 2021 at 10:27 PM Michael Oritt  wrote:
   Probably blown gasket at the 3-4 bridge. My original head suffered
from erosion of the metal at the 1-2 bridge, allowing the gasket to
blow. I had it built up enough to work for a while but eventually
replaced the head with a DWR AL model.  
  Best--Michael Oritt  
 On Mon, Jan 25, 2021 at 4:55 AM Alan Seigrist  wrote:
  All - 
 My A90 just started running weird. So I took a compression tester and
I'm getting (note the A90 is lower compression than the 100):

 1 - 135 psi
 2 - 135 psi 3 - 60 psi 4 - 60 psi 
 When I put the compression tester on number 3, I get blow back
through #4 spark plug port. Then when I put it on #4 I get blow back
through the #3 spark plug port.

 Seems to me it's just a blown head gasket.... am I correct? as far as
I'm aware, these heads usually crack between 2 & 3, correct? 
 TIA

 Alan  _______________________________________________
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