Fan Blade advice.

37 Coupe

37 Coupe

Well-known member
I am putting a new radiator in eventually and since they are not so cheap and how my luck usually runs any advice on a reliable fan blade? I think mine is an original 1931 one it is two blade and it is attacted to a magnet so it must be cast steel or something besides the cast aluminum ones.Are they all subseptible to cracking and coming apart? Should I stick with the original 87 year old one and check for cracks or is the new aluminum ones the way to go.Thank You.
 
The new aluminum one is the way to go IMO. While you're at it I would recommend rebuilding/replacing the water pump. FWIW
Paul in CT
 
A lot of originals end up looking line this.


Bob
 

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That is what I do not want near a new expensive radiator.Just trying to do stuff right especially with this.
 
I had an original on my 28 Special coupe that I bead blasted and inspected with a magnifying glass. I could not detect a flaw or a crack. I repainted it and installed it and ran it till I lost a head gasket. Before reinstalling I checked it over very carefully and found some rust tracks. Bead blasted it again and found a series of hairline cracks emanating from the roots of both blades. It is now a wall hanger and I am glad it is just, that.
Cheers!
 
Just make sure the two tapers match. If not, the fan will wobble and fail. Not to tight on the belt too. All that belt load puts the tapered joint into bending.
 
Bob C said:
A lot of originals end up looking line this.


Bob
Click to expand...

Been there. You don’t want this to happen to your car. Could do more damage than just to your radiator.

New two blade aluminum fan with leakless water pump. Two more potential problems taken care off. Enjoy.
 
Also would like a water temperature gauge.Snyders and Brattons sell different setups for the temperature bulb probe.One is on the inlet on head.
 
I just put on the gooseneck. The other set-up makes that upper hose pretty stiff and you don't need any more loading of the radiator inlet, where they always fail.
 
If you're not going for judging points, use a plastic fan. I've had two metal blades crack.

Glen
 
I had one of the Cast Iron hub bolted on steel fan blade ones throw a blade !!

Took out the radiator and broke the water pump casting,

More junk to be aware of!!
 
Charlie Stephens said:
What kind of metal, steel or aluminum?

Charlie Stephens
Click to expand...

Both steel. One on a Model A and another steel 4 blade on our '31 Chrysler. When the A blade cracked, all suppliers I contacted to get a 2-blade alum fan were out of stock so I opted for plastic with the intention of replacing it later with an alum model. Two years or so later, haven't gotten around to changing it to alum since I'm quite content with the plastic one. Anybody have an alum fan crack and fly apart?

Glen
 
Problem solved, aluminum is the way to go. Now, Water pump. get the parts to rebuild like original. Shop where the best parts are and save over $100.00 rather than "Upgrading". 30 years down the road when your old and wealthy buy the pump that you want now. Then when it fails in 2-3 years, get another std. kit and fix the original pump as a maintenance task. Use the nifty stud kit either way but use antisieze on threads.
 
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