Thread: Fan to rad.

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Deuce will verify, which I see he did while I typed this the first time. A similar unit would be a Snow White pump; http://www.snowwhiteltd.com/products.htm
Deuce, do you have a web site link for where to get the Zip's?

I don't know about the Zip's, but the Snow White places the fan mounting flange an inch closer to the engine which would give some "wiggle" room, not so much importance on a Deuce, but on later models where the rad slants back it helps.

this is one place to get them.

parr automotive

Those things are pretty pricey aren't they? Til its all said and done I'd guess you'd have 300+ in one, right? Anyone else running an engine driven fan on a deuce without a pump riser? I'm thinking I'm either trying a shroud or going with an electric... however, correct me if I'm wrong, but a shroud really isn't gonna make much difference in how hot a car runs at idle is it?

Originally Posted by 30coupe

this is one place to get them.
parr automotive

Thanks.

A shroud will make all the difference in the world at idle. Remember, when you're going down the road you're getting ram effect for air movement through the entire core. At a stop a shroud directs all of the fans effort through the entire core. No shroud, fan only does a small portion of the core, if anything (depending on installation).

Thanks Denny, you might check Parr's (30's suggestion), they were $20 less than So-Cal.

It's a shame the brackets are part of it. I like the alt down low to keep the top of the engine cleaner looking, and REAL hot rods don't have A/C! (Well, except for old fogies who can't take a little heat )

Thanks for the info on shrouds... if my fan is low in the rad (without a waterpump riser) and i put in a walker plastic shroud with the hold cut out low for the fan, leaving the upper portion covered by the shroud, will it help or hurt the amount of air pulled through the rad at idle? for 89.00 I would try it if there was any chance it would help.

Originally Posted by joeybsyc

... if my fan is low in the rad (without a waterpump riser) and i put in a walker plastic shroud with the hold cut out low for the fan, leaving the upper portion covered by the shroud, will it help or hurt the amount of air pulled through the rad at idle? .

For any given arrangement, the fan is going to pull the amount of air it's gonna pull (don't you just love profundities?). So neither the fan nor shroud cares whether the hole is at the top or the bottom as far as amount of air flow. The fan shape/design will have more to do with that than location (in this type application). One plausible argument for having it in the upper half rather than lower is that the hottest air will have the shortest path of exit. That said, even with the fan down low pulling through a shroud is better than no shroud for the reasons stated in the above entries.

Now, the type of flex fan you've got there isn't known for being very effective. For a mechanical fan I prefer the type Deuce has in the picture above. If for no other reason, rarely if ever do you see an OEM application overheat. Which fan did they use? The funky little flex fan, or the modest pitched steel fan like Deuce's? (which also has some flex, just not as much).

I agree the flex fan isn't the most efficient fan design ever created, its there because they are 15" diameter, and thats all the clearance i have... I did find some stamped steel fans in 15" on flex-a-lite's website, and may look into getting one, along with a shroud. I'd like to try to make this work with a stock type fan setup, as I don't like the look of an electric fan. I'm not particularly crazy about the look of the risers either, although the one without the extra brackets cast all over it looks better than the Zips. In any case, I'd like to try to do whatever I decide to do without tearing the whole front end off of the car, in fact, I'm going to attept to finesse a shroud in there without even taking off the hood. I figure they've been building hotrods alot longer than they've been making electric fans and pump risers, so there's gotta be a way to make it work with a factory type fan setup. I'm hoping whats been said about shrouds is correct, and I can get it to idle a bit longer without the temp raising up too much. Makes sense that it should help. As it is now, the car is fine until it has to sit and idle for long periods of time, at which time it wil creep up until you start moving again, then the temp quickly drops back where it should be. Where I live it will be a very rare occurance that I'll ever be sitting still for long, so if i can improve it even a little bit, it will work for me. -JB

This is a Snow White ... it belongs to a friend ... and it is on his Model A ...
The Snow White does not have the brackets ...

300 dollars is a fair amount of money ... but a LOT less than a cooked engine ... When you factor in the alternator bracket and the improved fan ... I believe them to be a bargain.

A 14 inch fan has the area circle of 153 inches ...
A 18 inch fan has the area circle of 254 inches ...

Thats a LARGE improvement ...