Lightweight aluminium type high efficiency radiator with good fitment, rigidity and appearance. The lower hose outlet is also positioned correctly to fit all the Coopers and 1275 engines and any mini although the radiator can foul the Pre 1973 inner wing radiator cowling without slight modification.Water boils at 212F and when under pressure it can raise by 3 degrees for every pound of pressure. The higher the pressure cap the hotter the water has to get to boil. Under testing the tubes can take 21 lbs pressure but the hoses etc might not. Now with 16lb rad cap.
This radiator has 2 inline 22mm wide core tubes with 9 V shape fins/gills or equivalent of 15 fins/gills per inch, brazed aluminium core giving 25% more fin area and 30% more cooling area than a standard 3 core radiator this item really does cool very well, to well for many cars unless modified or in a hot climate.Heat transfer from the coolant to air is better on this brazed radiator as there is no thermal barrier from solder. Remember -your engine needs to get to and keep a proper working temperature for the oil to function correctly so never run your car too cool or it will encourage engine wear.It is always a good idea to fit an electric fan thermostatically controlled on road cars.The drain hole plug is fitted at an angle so it can take a sender unit as required for later cars 1990 on. Outlet pipe at top comes out facing backwards. Lower outlet set at correct angle suitable for "S" variants plus all standard minis.