Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) radiator fan

Thanks everyone; I like the engineering-style approach.
I’m going to take measurements of the old fan.
It turns out the 30A fuse has indeed blown as well. That fuse sits by itself in the front engine bay. The power cables leading to the fan are also scorched.
Yes, it happened during a slow-speed section of a rally.
We shut the Morgan off and waited for it to cool down. I lost the rally.

To finish in first place ...first you must finish

Hope you get the new fan sorted Riri

Yes it´s a 12" fan.

From your image above and having 12 inch (305mm) blades with assumption the fan sucks cool air through the rad it looks like this one drawing 12.4 amps would fit from the current Spal range. Please check these dimensions though and accept that the later design, having blade protection and mounting on the periphery, may require you to re-engineer mounts.

Yes true, but he is a brave chap rallying his Plus 8 hey

Hi again riri,

It is as expected..and happily only melted/fused solid from the fuse and relay to the fan. They protected the fusebox and wiring from it. Sad nonetheless. I use a 40amp fuse with a SPAL 40 amp relay and along with their wiring. Your fusebox fuse merely covers the relay "trigger" for the SPAL relay. I can't figure why the fuse/relay didn't blow rather than fusing and melting the fan! We shall be more prudent with what you buy now. Stick with SPAL ancillaries rather than another setup. I have never had a SPAL system give me a problem on any Plus 8.

I gather you have not checked the engine compression yet. That can be done without starting the engine. It is your biggest worry. Unlikely, but it must be checked. You can do that yourself...even with an inexpensive pressure tester. https://www.gomog.com/allmorgan21.html#ENGINE. BTW, was the rear of the radiator core damaged from the heat?

And yes, engineering and experience should always set your priorities.

1[b]. the new fan should, ideally, fit the brackets you have.

2. have a depth or a smaller one that fits the space you have. You can use tape measure with the rad in the car or measure the depth of the fan once removed.

3. produce the most CFM (cubic feet of airflow) (aka M3/hours) you can find. I have picked a coup,e of possibilities out. The example posted is rather low cfm, IMHO. For example, my 12 inch SPALs pull well over 2300 cfm. Determine the part # of the melted one in the car. Then you can choose with wisdom and availability near you. I always take issues as an opportunity to improve Morgans.

Lorne