[Healeys] Head Gasket

[john harper]

All

The pressure on the water pump is defined by the radiator cap. 7 psi on the
100.

Best regards

On Thu, 24 Feb 2022 at 00:31, Alan Seigrist via Healeys <
healeys at autox.team.net> wrote:

> Henry -
>
> All water passages in Austin motors are done like this.  This is because
> the water pump is on the front of the motor, and the water outlet is in the
> front of the motor, so the jacket forces water to the back on the block
> then back to the front on the head, but also needs some cool water in the
> front too.  it’s meant to make sure the water is the same temp whether it’s
> in the front or the back of the engine.  Don’t mess with the passages or
> you’ll end up with hot spots on the motor.
>
> Best,
>
> Alan
>
> On Thu, 24 Feb 2022 at 4:03 AM, Henry G Leach via Healeys <
> healeys at autox.team.net> wrote:
>
>> Has anyone ever stuck a magnet to a Payen *copper* gasket? I did-its a
>> steel gasket with a copper coating. There is a real engineering issue with
>> the 2660cc block and I am not sure why it is configured as it is. There may
>> have been a study done on the engine's water flow way back then and some
>> modifications made for cooling. It does not add up or make sense, however.
>>
>> So, look at this head and the gasket and then the block. Why are the
>> water passages reduced on the jackets shown?  Then too, why is there no
>> passage in one area marked that is actually open for water on the head*
>> and* gasket? This is one "hot spot" found between 2-3 cylinders when
>> read with a heat gun.
>>
>> I was tempted to drill out the opening in the block before re-assembling
>> my head, but thought better of it. I would never question engineering
>> technology of BMC. Modern day replacements have that same area blocked.
>> Never-the-less, can anyone explain this concept to me; the reason for this
>> and a 4lb. radiator cap. This engine needs water, lots of it to keep it
>> cool. Why restrict it?  Then too, aluminum has its own set of issues that
>> may/may not improve the cooling capacity of some old, thick cast iron
>> block. Maybe throwing money at it has an effect.  Hank
>>
>> -----------------------------------------
>> From: gradea1 at charter.net
>> To: "Steven Kingsbury"
>> Cc: "Healey Mail List"
>> Sent: Tuesday February 22 2022 12:23:07PM
>> Subject: RE: [Healeys] Head Gasket Woes Part Two
>>
>> Steven-that's a real heavy piston at .060 (compression ratio 9:1?) Was
>> there any defect in head prior to assembly? Magnafluxed? There is an outfit
>> Midwest Cylinder Head that can repair that for about $500, or else is on to
>> Denis Welch for about $4K.
>>
>> I just had my head off and checked-they shaved .003 to get it flat.
>> Fingers crossed-head gasket was not blown, but water in oil. I'm hoping it
>> was water intrusion from rocker studs. Hank
>>
>> -----------------------------------------
>> From: "Steven Kingsbury via Healeys"
>> To: "Healey Mail List"
>> Cc:
>> Sent: Tuesday February 22 2022 11:28:21AM
>> Subject: [Healeys] Head Gasket Woes Part Two
>>
>> Luckily the pistons weren't frozen, nor the rings in the pistons, but
>> when I turned the head over to inspect, I got the really bad news.
>>
>> [image: INBOX530788498d9fa86f504913dab139d4d9ef6]
>>
>> Oh well. I guess some JB Weld might hold!?  Ha! Damn it Jim.
>> S
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