On my Plus8 I had a Morgan rad fitted as a replacement by a previous owner. Fitted by a dealer not DIY.
The top bracket was peeling as above. The reason was that the top mounting bracket hole was out of line with the bracket on the cross bar causing side stress. Not a very good fit by the dealer as it was clear that the mis-alignment was there. No leaks as it was just the weld peeling away.
I did two things.
1. Elongated the holes to get a better alignment. This didn’t give enough overlap so...
2. Made my own bracket profiled to fit over the top tank and put padding on it to prevent rubbing. I put a new bobbin in at the same time.
The rad , in my opinion, was under specced as the cooling was ok but too close to the limit. It needed a slight increase in cooling capability. The fan kicked in too often as reduced airflow led to too frequent temp increases. It only overheated twice when the fan fuse failed. The loud fan and temp gauge combo was a warning that the fan hadn’t kicked in so a kind of audible warning! Even extra airflow management didn’t really improve it. Basically the rad design needed more gills per inch and/or an extra row of tubes. This was the norm for rads we made in the rad factory I worked in. Rads for slightly larger capacity engines could be simply upgraded in this way eg. 1.1L to 1.3L variants in different models of a car. No need for major design changes.
Last edited by sospan; 18/02/24 11:09 AM.
