The deep neck cap is not available in a higher pressure. We change the
neck in all the radiators the we overhaul to allow for a higher
pressure cap. We usually use a 12 lb cap.
David Nock
British Car Specialists
Stockton Ca 95205
209-948-8767
www.britishcarspecialists.com
On Jun 6, 2005, at 8:25 AM, Doug Newton wrote:
> Hello again everyone- I replaced my original radiator core in my '65
> BJ8
> with a new style core with more cooling tubes inside, using the stock
> top
> and bottom of the original radiator. I did all this because the newer
> cores
> are designed to handle higher pressures, which allows the boiling point
> inside to increase as in conventional cars and the cap will "puke" out
> the
> coolant at higher temperatures.
>
>
>
> Anyway, since the stock Healey radiator cap only handles 7# of
> pressure,
> unless I get a cap that can handle 10 lbs. of pressure, then I have
> lost the
> benefits that the new style core allows. Healey radiators have a 1"
> deep
> fill neck and most new style radiators have a shorter one; in other
> words, I
> need to come up with a radiator cap that is designed to fit a stock
> Healey
> Neck (1" deep), but has 10# rating.
>
>
>
> I should note that I have been advised that using a radiator cap with
> more
> than a 10-12# rating could cause the top or bottom of the original
> radiator
> to rupture.
>
>
>
> I guess I could have the original neck replaced to a shorter version,
> but
> that would be my last resort.
>
>
>
> Has anyone other than myself run into this problem and would you mind
> sharing the brand and part number of a radiator cap that would work
> for my
> application?
>
>
>
> Please advise & thanks- Doug
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