You may have access to 197BHP but do you ever use the car in anger and
exploit that power for prolonged periods?
Kees Oudesluijs
Joe and Lenore Armour wrote:
> Oudesluys wrote:
>
>> What is disregarded completely in this discussion that a lot of
>> people run modified (much) more powerful than standard engines and
>> have the standard radiator without extra cooling ca[pacity and/or a
>> proper electric fan. Of course you would create overheating that way.
>> Kees Oudesluijs
>> NL
>>
>>
>>
>
> FWIW, I have a 197BHP at the back of the gearboxof my Healey 3000
> with a standard radiator with sealing plates across the top and bottom
> of the core and side vertical panels with ONLY one half of the the
> standard fan ( one blade of the two) and no electric fan. During
> summer in Australia it has never boiled. Also has Webers and a tubular
> exhaust manifold. The only difference to most of the listed
> discussion todate is I have an alloy head.
>
> Some of the experts out there will no doubt be able to explain that
> the rate of heat transfer is most important in any heat exchange
> system and this happens between combustion chamber : head material :
> water to remove the heat and then again in reverse in the radiator
> matrix, water : copper : air. All of these items/materials affect
> the cooling system.
>
> Surface condition of cast iron has a BIG affect on the rate of
> transfer of heat from the combustion chamber. Iron oxide ( rust,scale)
> limits the transfer of heat into the water significantly.
>
> Also have a close look at exactly how far down the height of the block
> the actual water jacket around the bores does go. This area within
> the block/bores is notorious for becoming jam packed with crud (
> technical term to describe all sorts of foreign matter) and this
> decreases the surface area of the hot bits from being exposed to a
> good water flow and therefore heat removal.. Same principal with a
> dirty radiator.
>
> Forgot, I also have triangular vents in the guards.
> ------------------------------------------------------------------------
>
>
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>08:34:00
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