1725 FAN

[bobbo]

Started today to begin the 1725 removal for rebuild. Noticed the engine fan is cracked, so replacement will be required. I'm thinking about going electric, and mounting in front of the radiator, between the badge bar and rad. Just seems a little safer to me to have it out of the way. That said any suggestions would be welcome.
I'll need a fan that pushes rather than pulls air through the rad. Mounting bars can be easily fab'd.
Something fairly current that could be had at an auto wreckers or decent aftermarket.
Thanks bob

 

[beamdream]

Started today to begin the 1725 removal for rebuild. Noticed the engine fan is cracked, so replacement will be required. I'm thinking about going electric, and mounting in front of the radiator, between the badge bar and rad. Just seems a little safer to me to have it out of the way. That said any suggestions would be welcome.
I'll need a fan that pushes rather than pulls air through the rad. Mounting bars can be easily fab'd.
Something fairly current that could be had at an auto wreckers or decent aftermarket.
Thanks bob

Way to go, I've had a pusher elec fan in front of the radiator for nearly 10years on my Series 1, never had a problem.

Living down under I frequently have temperatures in the high 30s (C) and even with street parades it doesn't overheat, I might add the original fan was removed.

 

[bobbo]

Thanks mate, from the opposite side of the world from you, but summers in Canada can also get into the 30's. I suppose you got the largest diamiter possible that would fit the space?

 

[Warren]

If they made one that didn't switch on having sound that drowns a purring motor that'd be nice. Variable speed and reversing would be really nice as well so you could suck the heat out of the engine bay when parked. Doing this would slow the annoying vaporization of fuel in the carburetor. Ask the Mrs about that cologne you are wearing when you come out of the garage.... Eu di Benzina....
Certainly not one of her favorites

Sorry for the topic drift. Not sure what they were thinking and why a four blade fan was ok for a 1725, 260, 289, etc.

 

[bobbo]

Lots of fans available on e-bay. I would expect a decent fan would cost more than the ones I see. Mostly in the 30 to 70 dollar range and not much description. Some are reversible. If anyone has experience with these Chinese fans, let me know.
bob

 

[jumpinjan]

Noticed the engine fan is cracked, so replacement will be required.

Well, just replace it...LoL! Electric fans aren't necessary (especially electric fans made in china). I never had a cooling problem with the Alpines. If you do, it's probably the radiator needs recored and/or the engine block needs to be flushed out.
Jan

 

[sunalp]

I've removed more electric fans from Alpines and replaced them with the stock fans for exactly the same reasons
Jan mentions. They just make one more thing that can go wrong and are not necessary for an Alpine

I had a very nice Series V in the shop that the owner said was running hot. We cleaned the radiator and
flushed the block......full of "mud" and silt from when the engine was originally built.
If you haven't done these things, you should. Oh yeah, don't forget the heater core!
Cheers!
Steve

 

[jumpinjan]

So, one installs a 30amp electric radiator fan...then discovers the original generator only supplies 15amps, so one buys a 100A GM alternator and hours & hours to make custom mounts. Gee, a $50 fan blade (car repaired in 30 mins) turns into a $150 solution and takes hours & hours?...I don't get it? I think the scope of the repair got-out-of-hand?
Jan

 

[beamdream]

Thanks mate, from the opposite side of the world from you, but summers in Canada can also get into the 30's. I suppose you got the largest diamiter possible that would fit the space?

Actually I didn't go to a lot of effort, found a 12" fan at a swap meet for $10, bought a sensor controller and installed the bits, works fine.

Sorry about the pic, but it's the best I could do.

 

[beamdream]

So, one installs a 30amp electric radiator fan...then discovers the original generator only supplies 15amps, so one buys a 100A GM alternator and hours & hours to make custom mounts. Gee, a $50 fan blade (car repaired in 30 mins) turns into a $150 solution and takes hours & hours?...I don't get it? I think the scope of the repair got-out-of-hand?
Jan

Well Jan to each his own. My story didn't go quite like that, as you can see I spent $10 on the fan, probably $20 on the controller and spent about an hour setting it up; in 10 years I haven't had a problem.

Still running the original S1 generator and haven't encountered a flat battery. In practice I monitor the Amp meter, particularly in hot weather and most often only see it load up at traffic lights or crawling along in city driving, under these conditions the temp holds around 190 but once in clear air gets back to about 180 and the Amp meter shows the fan cutting out.

What I do know is that the radiator and thermostat are both in very good condition and obviously this plays a big part in avoiding trouble, or maybe I'm just very lucky.

 

[bobbo]

As mentioned in my first post, the reason to replace, is the original sunbeam fan is cracked. I understand this to be a fairly common issue. no problem with overheating. Just thinking the electric fan would avoid the search for another Sunbeam fan. My series V should have no issue with running an electric.
I do appreciate all the input. Thanks,
Bob

 

[hartmandm]

Do what you want, of course.

Instead of searching for another original Alpine fan, you can go for an aftermarket mechanical replacement. Then you won't be concerned with the fan blades breaking off and shooting through the hood. I don't know any specific direct replacement fan part numbers, but I suspect other folks have some. Way simpler and more reliable than switching to an electric fan.

Mike

 

[bobbo]

have the winter to work on this, as I only noticed the cracked fan while starting engine/tranny removal for rebuild.
Thanks
Bob

 

[Alpine 1789]

As mentioned in my first post, the reason to replace, is the original sunbeam fan is cracked. I understand this to be a fairly common issue.

It is a common issue with the later fans, but the earlier ones are supposed to be much less prone to breaking. I put a SII fan on my SV about 20 years ago, just to be safe and so far it has not let me down.

 

[RootesRooter]

I also put a SII fan on my SV, that's been there since 1994, but not until after SV fan blades had twice put a hole in exactly the same spot of the bonnet, two years apart. The 2nd one happening near Boise, ID on the way to Wisconsin for SUNI II.