Thank you for all these answers. I know Mulfab and 2 friends have replaced their radiator with a Mulfab without any concern at the moment.
I have asked advices because a new friend has just bought a 2002 tourer and his radiator is leaking, the same than indicated in the link above(SERCK). The tourer has only 7000 miles and the tag on the radiator indicates a date 30 sept 2013. The radiator is quite new and seems externaly completly new, but has 2 small leakages on the right side, top and bottom.
It seems that people don't use a lot this make.
I wanted to know if this was a ponctual problem or a general quality problem. The price is cheaper than Mulfab which has a good reputation.
Whatever radiator you fit make sure the rubber mounts are still flexible and have not gone hard. I recall being told the the flex of the Morgan chassis (which is normal) can stress the radiator if it is rigid in its mounts and then it may leak.
Last week I had to sort out my rad's stop mount.
The weld securing the top bracket to the tank had cracked. The bracket was out of line with the hole in the top brace, hence causing strain on the weld which has slowly split. The tank is fine.
I made the bolt hole elongated to remove the side strain.
I cleaned it up and used JBWeld and a secondary padded bracket as an initial repair. The JBWeld joint is strong!!!
I had to lever the rubber bobbin into place and the joint was solid. Looks like it will hold well.
The joint was prepped by using 120 grit paper followed by cleaning/ degreasing then a thin layer of JB.
I was a bit annoyed( but not surprised) that the fitting of the rad was done initially in a way to cause the strain on the joint with out of line bolt holes. Whoever did it needs a slap for a badge job instead of 5 minutes extra to get holes lined up.
GRRR.
I will see how long my repair lasts.
I was impressed with the JBWeld Original version.