Originally Posted by waikiore
Wow collecting percentages of failed English aftermarket radiators for Morgans from the other side of the Atlantic ........ Give that man a hobby

Hi Waikiore,

Tsk! It would stop a lot of confusion if you read what I write. But I enjoy debate. It is the only way to avoid mistakes.

I have never had an English rad fail for me. I have used/experiments with 5 over 35 years, all of them made by Peter and one by the Factory. Save the Factory one, (which I gave the dear Button) they have all stood the test of time and did their job. I loved trying Peter's advanced rads as he invented them. I do not have a budget for Morgan things.

I could not understand stumog's "rotted" rad. So I consulted a radiator specialist since, a chemist. The fellow reminded me that if and mechanics/owners ignore the warnings and mix different coolants, an acidic sludge can form. Over time, this will eat away at all alloy parts, the radiator, the water pump, the cylinder heads.... Literally rot them Different coolants (IAT, OAT, HOAT, or P-HOAT) use varying corrosion inhibitors and additive packages and when these different chemistries meet, they can interact in a hostile fashion:The mixture coagulates into a thick paste, blocking coolant passages and attacking alloy. Over time, this corrosion strips away protective layers, the alloy and causes overheating and finally engine failure..

Of course, it can be easily be prevented by reading coolant labels and never mixing coolants. The is alloy and aluminum engine ABCs. However, for owners, preventing mixing is easier to determine outside the UK/Europe as the coolant colours (Canada USA Australia) are regulated by law to prevent such mistakes happening. But coolant colours in the UK/Europe have no universal code, meaning the same colour from different brands can have totally different formulas. I never had a problem with my UK rads with the Plus 8 I kept in the UK K. But I read labels. This is part of the ABCs of motoring. This incident is likely not a manufacturer error. It is all up on GoMoG

Lorne.

P.S. Waikiore If you read what I wrote, you would have learned that I have seen failures with US made Morgan rads, notably Griffen, the biggest producer of aftermarket rads for the US classic car trade. .

Last edited by gomog; 20/05/26 10:15 AM.