Hello, I got some problems with overheating some hot days in my 500 DeVille -68, and I wonder if a clutch fan is so much better than the flex fan I've got? What about the distance between fan and radiator, how much should it be?
Clutch or flex fan...
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The thermal Clutch fan is definantly better. Replace that flex fan you will definantly notice the difference. What brand is the flex fan?
- Justin
- Justin
The problem doesn't lie within your fan. It's probably the radiator or t-stat or something. Most likely you just need to have your radiator replaced or rodded.
Oh BTW Justin, got your MO sent out today. Sorry for the delay.
Oh BTW Justin, got your MO sent out today. Sorry for the delay.
There is a large variation in flex fans. Some are stronger than clutch type, some weaker. Are the blades fairly large on the fan or very small?
A thermal clutch has oil in it that stiffens when warm. It cools more when the radiator heats up. This is the preferable one.
I'd start with the thermostat and check the radiator first...unless it's a fan with small blades.
A thermal clutch has oil in it that stiffens when warm. It cools more when the radiator heats up. This is the preferable one.
I'd start with the thermostat and check the radiator first...unless it's a fan with small blades.
The fans are very large. They push a lot of air. Why would it start overheating now? The fan has been fine for years. I'm still betting on the radiator.
caddyswede's 68 Deville
So here does it look.
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Beat me to it!JTraik said:
Is that a Bosch alternator on there?
Ok, now I know what a shroud is... I hope I can found someone here in Sweden. That's why the distance between fan and radiator is so big, with a shroud on, it doesn't matter. Thanks!
Yes, it's a Bosch alternator.
It's a lot of work with my car, you can follow it here: http://www.cardomain.com/memberpage/690250
Yes, it's a Bosch alternator.
It's a lot of work with my car, you can follow it here: http://www.cardomain.com/memberpage/690250
Good eye, Ape Man. I doubt a 7122 (or 7127) alternator is that easy to come by in Sweden.
A shroud will definately help - up to solve - the problem. Disputes aside, cooling differences are actually marginal between a thermal clutch setup compared to a properly set up clutch-less system.
Just a note: I think it was HotRod that compared a flex to clutch setup and found a mere 2-5hp gain, and only at almost 6,000rpm... no thanks. That clutch is just one more thing to fail.
A shroud will definately help - up to solve - the problem. Disputes aside, cooling differences are actually marginal between a thermal clutch setup compared to a properly set up clutch-less system.
Just a note: I think it was HotRod that compared a flex to clutch setup and found a mere 2-5hp gain, and only at almost 6,000rpm... no thanks. That clutch is just one more thing to fail.
caddyswede, nice page. I'm digging your car. Great job!
Great looking photos. Repairing old cars can be like chopping a large tree down. A little at a time.
Now I got my radiator rebuild with a four-core rad. It's even more lines than the old three-core. You can see the different, changed the fan also, brackets and shrouds is on the way.
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http://www.cardomain.com/ride/690250
http://www.cardomain.com/ride/690250
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