[Healeys] Radiator cap for BN2

[Michael Salter]

Actually, in my experience, the biggest problem wirh exceeding 7 p.s.i. is
the water pump seal. They will typically start to leak at around 10 - 12
p.s.i.

M

On Mon., Jul. 18, 2022, 6:04 a.m. john harper, <ah100tech at gmail.com> wrote:

> Henry
>
> I would not use a cap higher than 7psi because of core plugs as already
> stated but because the heater core on the BN1/2 may not stand the higher
> pressure.
>
> On Mon, 18 Jul 2022 at 03:11, Henry G Leach via Healeys <
> healeys at autox.team.net> wrote:
>
>> Oh, yea! I recommend do not use a 15 lb. cap-worked on a 100-6 with blown
>> freeze plugs as a result of the 15pounder. Early 100s used a 4 lb. cap, but
>> the later (BN2) cars went to 7 lb. (each additional pound gives higher temp
>> tolerance, but too much of a good thing is bad. There is always the head
>> gasket to consider as well.  Hank
>>
>> -----------------------------------------
>> From: "Bob Spidell"
>> To: "Healeys"
>> Cc:
>> Sent: Sunday July 17 2022 6:27:46PM
>> Subject: [Healeys] Radiator cap for BN2
>>
>> I see both 4psi and 7psi mentioned; any issues going with the higher
>> pressure cap?
>>
>> TIA
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