If you think the radiator is past its best and the engine is mostly standard then a standard replacement radiator should suffice: http://www.minispare...px|Back to shop
What sort of overheating problems are you getting?
Thx. Yeah, logic says to me that a standard rad should be man-enough especially if everything else is up to scratch. I have no plans to modify the engine.
After 3 1/2 years of complete restoration we drove the Mini from Norfolk to Guildford at the weekend, it overheated about an hour into the journey as we hit the dual carriageway of the A11. It seems like cruising at anything over 65mph caused it to heat up significantly and after a few spirited overtakes it overheated (boiled over, crap all over the rhs of the engine bay). As noted in one of my earlier replies I did notice the aux fan didn't come on/wasn't on...that could be 100% the reason for the overheat but it might not have been helped by the old rad. It might be a symptom of something else?
AA man came out, ran checks, it behaved perfectly. We drove the remaining 90 miles keeping it under 65mph with no more issues.
Aside from a adding LCB and the engine getting a stringent service and clean up and cleaning up all the water-ways, new piping etc, its bog standard block and gearbox. Pretty much everything else mechanical outside of the engine on the mini is new/replaced. It passed MOT clean as a whistle for ever that means.
I've owned enough Mini's to know overheating is a thing they do and that is why I spent effort making sure all the waterways were cleaned up or new in the restoration, everything except the rad that is, which I completely cleaned...or so I thought