However there are plenty of cars with waterpumps fitted with a carbon
seal that run on about 1bar (around 12psi I think), e.g. the Lotus 907
engine or the old slant four Vauxhall, several Sunbeams, Renaults,
Peugeots etc. I suppose they increased the surface to keep the pressure
similar?
Kees Oudesluijs
Michael Salter schreef:
> Alan is correct. The seal in the water pump is a carbon ring under spring
> pressure against a cast iron surface. If the spring is too strong the seal
> wears quickly so the design is such that there is sufficient pressure to
> resist the design pressure of the system and little more.
> Modern pumps use ceramic seals an can therefore withstand higher spring
> pressures.
>
> Michael Salter
> 100 (1953) #174
> AHX12 (1953)
> Bugeye (1961)
> http://www.netbug.net/blogmichael/?p=432
>
>
> -----Original Message-----
> From: Oudesluys [mailto:coudesluijs@chello.nl]
> Sent: February 19, 2009 2:16 AM
> To: Michael Salter
> Cc: healeys@autox.team.net
> Subject: Re: [Healeys] Texas cooler
>
> Michael,
> What will give in the water pump?
> Kees Oudesluijs
>
> Michael Salter schreef:
>
>> Be very careful about increasing the cooling system pressure. I know from
>> experience that the 4 cylinder water pump will not take 12 lbs and one
>>
> would
>
>> want to check the maximum pressure of the 6 cylinder one before taking
>>
> that
>
>> step.
>>
>> Michael Salter
>> 100 (1953) #174
>> AHX12 (1953)
>> Bugeye (1961)
>> http://www.netbug.net/blogmichael/?p=432
>>
>>
>> -----Original Message-----
>> From: healeys-bounces@autox.team.net
>>
> [mailto:healeys-bounces@autox.team.net]
>
>> On Behalf Of rrengineer @dslextreme.com
>> Sent: February 18, 2009 6:49 PM
>> To: Leonard Berkowitz
>> Cc: healeys@autox.team.net
>> Subject: Re: [Healeys] Texas cooler
>>
>> I have heard that putting a chevy neck on the rad also to bring up the
>> pressure helps also. That being said I had my radiator recored with a
>> better core but did not change the neck, still low pressure. Have not
>> assembled the car yet so i cannot tell you if it works.
>> Mike MacLean
>> 56 BN2
>> 60 AN5
>>
>> On Wed, Feb 18, 2009 at 3:40 PM, Leonard Berkowitz
>> <drberkowitz@hotmail.com>wrote:
>>
>>
>>
>>> My Healey has the original water pump a rebuilt engine and stock fan.
>>> Since
>>> the upgrade of the radiator it does not over heat. I had tried everything
>>> to
>>> keep my little love cool but the only thing that has been successful was
>>> the
>>> radiator rebuild.
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