Is your radiator in such bad condition that it cannot be 're-cored'? I
would recommend that route if possible. If your car is fitted with a starting
handle, and therefore a hole in the radiator, have the radiator recored
without the hole; you'll get lots more cooling capacity. I have a TR3A, so I
don't know what year of TR4 had the starting handle hole, if any.
I don't know of any sources to buy a radiator, assuming they are
unavailable from Moss, etc., but one option might be to buy a used one and
I have heard great things about the aluminium radiators, however, I
understand that frequent coolant changes/flushes are critical to any kind of
longevity from them.
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