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What fan to use?
#1398461 Tue Feb 23 2021 04:49 AM
Joined: Dec 2020
Posts: 75
5
53&Me Offline OP
'Bolter
I'm sure there is a write up on this somewhere that may have the answer to my question but I haven't been abke to find it. ..Sooo here is my current situation while I wait for parts to show up. I am working on getting my recently aquired 1953 chevy 3/4 ton with original 216 ci and 4 spd manual trans back on the road after its roughly 30-40 year slumber. I have been removing and inspecting various parts to give this beast it's best chances and have found that the radiator fan has a bent fin on one tip and a crack halfway through the fin near the axis. My fan measures 18" from tip to tip. The problem I am having here is where to get a replacement 18" fan, or should I just replace it with the 15.5 fan that basically all of the classic truck parts suppliers say is what I should be using?
Carter has a write up on fan blades and even some pictures of the blade I am looking for but no 18" fan for sale. According to the write up the 18" was an option with a radiator with aditional cores. Sorry for no pictures, My phone doesn't do pictures so well.

Last edited by 53&Me; Wed Feb 24 2021 08:43 AM.
Re: What fan to use?
53&Me #1398465 Tue Feb 23 2021 10:35 AM
Joined: Feb 2016
Posts: 496
7
'Bolter
If it were mine I would use the 15.5" as a test and to make the truck drivable, then you could do some more research on the original and maybe come up with a plan to repair it.


1957 Chevrolet 5700 LCF 283 SM420 single speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto
Re: What fan to use?
53&Me #1398473 Tue Feb 23 2021 12:58 PM
Joined: Feb 2019
Posts: 1,620
P
AD Addict
You could always post in the “Truck Parts Wanted” forum.


Phil

1952 Chevrolet 3100
Project Journals
‘59 235 & hydraulic lifters
“Three on the Tree” & 4:11 torque tube
12v w/ Alternator
Re: What fan to use?
53&Me #1398480 Tue Feb 23 2021 01:33 PM
Joined: Apr 2005
Posts: 9,594
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
What Phil said!


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne 4dr 230 I-6 one owner (I’m #2) “Emily”
‘39 Dodge Businessmans Coupe “Clarence”



"I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
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Re: What fan to use?
53&Me #1398493 Tue Feb 23 2021 02:51 PM
Joined: Mar 2019
Posts: 1,232
G
'Bolter
I got a 15 if you decide togo that route. Pm me if so.

Re: What fan to use?
53&Me #1398497 Tue Feb 23 2021 03:23 PM
Joined: May 2005
Posts: 85
A
Shop Shark
I bought a new old stock 18" fan blade on EBay a couple months ago. Even had the original box. It was $80 dollars but I knew it was not abused.
If you get a used one you might want to clean the blades with a wire wheel to bare metal where blades meet the hub near the edges and inspect for small cracks. (Just for piece of mind)
I know that 2 blade Model A fan blades were prone to fatigue cracks near the hub.

Last edited by archburycontrol; Tue Feb 23 2021 03:43 PM.

1951 Chevy 1/2 ton
Re: What fan to use?
53&Me #1398498 Tue Feb 23 2021 03:43 PM
Joined: Jul 2000
Posts: 1,177
G
Shop Clutterist


Gord
----
1954 1/2 ton 235 4 speed
Re: What fan to use?
53&Me #1398500 Tue Feb 23 2021 04:09 PM
Joined: Dec 2008
Posts: 1,006
5
'Bolter
I had one of those nylon fans on my 55 Chevy. They do move a lot of air.


Brian
1955.2 3100 Truck


The older I get the more dangerous I am!!!!!
Re: What fan to use?
53&Me #1398559 Wed Feb 24 2021 12:07 AM
Joined: Dec 2008
Posts: 1,562
P
'Bolter
The amount of air move is proportionate to the diameter of the blades, squared. A larger fan can be run at lower speed by changing pulley sizes to save gas, reduce noise etc.
The opposite (a small fan turning faster) uses engine power at a higher rate for the same air volume: the fan RPM, cubed.

Re: What fan to use?
53&Me #1398602 Wed Feb 24 2021 08:52 AM
Joined: Dec 2020
Posts: 75
5
53&Me Offline OP
'Bolter
So good news.....maybe, I have found an old classic car yard near me sp I woll be headed out there yo hopefully find a fan that will either get me by of just solve my problem all together. O'll let you guys know what I find....or don't find. I will be looking for something to keep the stock appearance so a metal fan for sure.

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