Cooling - Controlling water temperature

The introduction of the Cooper S proved to be a testing time for the Mini’s systems, but conveniently provide a guideline as to what the standard cooling system was capable of - that used on the ‘S’ was marginal to say the least!

It wasn’t uncommon for many S’s to spew water from their overflow pipes when ever it was doing anything other than a steady 70 miles an hour, over-heating eventually caused through water loss. Perhaps some deductions can be made from the following…

There are a number of elements involved in controlling water temperature. Some confusion over what to sort first when over-heating occurs leads to wasted time and money, and possibly terminal engine damage. Maximum power is usually generated from A-series engines at 70 – 75 degrees C (160 to 170 degrees F). The main problem with this on a road car is the oil’s unlikely to get hot enough for maximum performance – the results outlined previously.

Historical Article - Nov 1992 - History in the making

Having built one Cooper ‘S’ for Timo Makinen to use in Historic Rallying, in which he won two International Rallies, I decided to build another one with more power and less weight than the previous one.

One lesson I learnt the hard way building the first car, was that a reliable source of new parts with in-built quality, especially where obsolete parts were being remanufactured, was essential. Mini Spares of London...

Historical Article - Nov 1992 - History in the making

Having built one Cooper ‘S’ for Timo Makinen to use in Historic Rallying, in which he won two International Rallies, I decided to build another one with more power and less weight than the previous one.

One lesson I learnt the hard way building the first car, was that a reliable source of new parts with in-built quality, especially where obsolete parts were being remanufactured, was essential. Mini Spares of London...