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Old 04-29-2013, 07:41 PM
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Radiator fan clearance problems.

Need help. I have a 1934 ford fordor sedan with a 350 chevy engine. I only have 1 1/8 inches from the water pump pulley mount to the radiator. I installed a 15 inch flex fan. The engine slowly just keeps heating up to 230 plus degrees, so I have to shut it down. Is there a mechanical fan that will work or even an electric one. Total distance from the radiator to a fan belt is approx. 2 5/8 inches. The radiator is 17 in. x 22 in. The water pump centerline is approx. 8 1/2 inches from the bottom of the radiator. Any suggestions? Thanks.

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Old 04-29-2013, 07:53 PM
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I have a '33 sedan, 350 - same tight engine bay. I used an electric fan - diameter same as the radiator width. I had a shroud made to improve the efficiency of the fan - pulls through the entire radiator, not just in front of the fan. I located the fan as high on the radiator as I could. That helped give me a little more clearance in that it put the fan motor (thickest part of the fan) above the water pump pulley. They overlap a little. I am also using the short water pump - reverse flow in my case because of the serpentine belt setup I used.
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Old 04-29-2013, 07:54 PM
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SPAL and some others make a slimline series, not sure what the dimensions are, and you need a shroud, which some fans come with.
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Old 04-30-2013, 10:36 AM
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Originally Posted by Darryl Welsh View Post
Need help. I have a 1934 ford fordor sedan with a 350 chevy engine. I only have 1 1/8 inches from the water pump pulley mount to the radiator. I installed a 15 inch flex fan. The engine slowly just keeps heating up to 230 plus degrees, so I have to shut it down. Is there a mechanical fan that will work or even an electric one. Total distance from the radiator to a fan belt is approx. 2 5/8 inches. The radiator is 17 in. x 22 in. The water pump centerline is approx. 8 1/2 inches from the bottom of the radiator. Any suggestions? Thanks.
Radiator is kind of small 17x22, how many rows of tubes? I run an aluminum, 2 row 19x32 in an S15 it just gets by at idle, but does fine everywhere else.

Your installation will probably require you change to the short pump and all the accessory brackets and pulleys that go with that change. Plus a shroud between the radiator perimiter and the fan, even if you use an electric.

Bogie
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Old 04-30-2013, 02:32 PM
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17" is about as wide as he can go in his '34. I am guessing that the 22" is the height of the core, not the whole radiator - most are 17" x 27" for '33s and '34s. That's what I have in my '33. My electric fan is a little bigger - closer to 17". So far it cools it just fine - even with the a/c on.
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Old 05-01-2013, 01:48 PM
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Originally Posted by sedanbob View Post
17" is about as wide as he can go in his '34. I am guessing that the 22" is the height of the core, not the whole radiator - most are 17" x 27" for '33s and '34s. That's what I have in my '33. My electric fan is a little bigger - closer to 17". So far it cools it just fine - even with the a/c on.
A shroud should cure your problem ,I have a 17 in fan and a hand made shroud ,I made it to fit full core size for extra cooling note notch for radiator hose,,works fine now even at idle ,I also changed my fan temp switch to come on at 185 ,not at 210 like the original that came with the fan,i have a 4 flu aluminum radiator ,and a BBC,the black strip at top of shroud is not a gap it is a rubber door edge guard to keep the shroud from rubbing the radiator.
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Old 05-02-2013, 10:39 AM
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Cooling Components: Satisfaction Guaranteed

The CCI 1730 is configured for just this issue. I haven't received mine yet to show detail but call CCI and talk to thier tech line. I'm retaining the long pump system too.
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Old 05-02-2013, 02:35 PM
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Cooling Components: Satisfaction Guaranteed

The CCI 1730 is configured for just this issue. I haven't received mine yet to show detail but call CCI and talk to thier tech line. I'm retaining the long pump system too.
What car are you putting this in?
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Old 05-02-2013, 02:54 PM
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What car are you putting this in?
'38 Chev. The fan is mounted up high and at a slight angle to allow more room at the pulley. I can't find my notes from the conversation but it is less than 2" thick right at the pulley.

Rather spendy compared to others but comes recommended from a street rod shop where I got the Vintage Air from. It's 2 speed too and when wired into the trinary switch, it runs on low with the compressor on and high when the temp switch triggers it.
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Old 05-02-2013, 03:03 PM
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Originally Posted by 496CHEVY3100 View Post
A shroud should cure your problem ,I have a 17 in fan and a hand made shroud ,I made it to fit full core size for extra cooling note notch for radiator hose,,works fine now even at idle ,I also changed my fan temp switch to come on at 185 ,not at 210 like the original that came with the fan,i have a 4 flu aluminum radiator ,and a BBC,the black strip at top of shroud is not a gap it is a rubber door edge guard to keep the shroud from rubbing the radiator.
I should have noted my radiator core is 22 wide and 26 high the shroud brings the air thru a 17 in fan for mor velosith at low speeds does no affect cruising air flow
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Old 05-02-2013, 03:52 PM
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'38 Chev. The fan is mounted up high and at a slight angle to allow more room at the pulley. I can't find my notes from the conversation but it is less than 2" thick right at the pulley.

Rather spendy compared to others but comes recommended from a street rod shop where I got the Vintage Air from. It's 2 speed too and when wired into the trinary switch, it runs on low with the compressor on and high when the temp switch triggers it.
Cooling Components makes a nice unit. In the front of my '33 ford, I have the short water pump, and still have less than 2 5/8" between the radiator and the water pump pulley. I could have had more, if I didn't have the big HEI distributor, or if I notched the firewall to set it back a bit more. Locating the fan as high as possible on the radiator allows the fan motor and water pump pulley to extend past each other.

I won't be switching now, since mine fits and works fine, but wish the CC folks gave some more detailed information, like a set of drawing with measurements at critical points.
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Old 05-02-2013, 04:35 PM
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Cooling Components makes a nice unit. In the front of my '33 ford, I have the short water pump, and still have less than 2 5/8" between the radiator and the water pump pulley. I could have had more, if I didn't have the big HEI distributor, or if I notched the firewall to set it back a bit more. Locating the fan as high as possible on the radiator allows the fan motor and water pump pulley to extend past each other.

I won't be switching now, since mine fits and works fine, but wish the CC folks gave some more detailed information, like a set of drawing with measurements at critical points.
I ended up calling them since their pic only says it allows more clearance. I agree, they should have a side schematic with the dimensions as they told me on the phone...

I found my note pad with the drawing I made at the time. At 6" down from top of shroud, it's 2 5/8 thick.....at 11 3/4" down it's 2 1/4. At 12" down it's 1 9/16 and at 16" it's 1 1/2. My fan pulley is right at the 11 3/4 -12" down and will have plenty of clearance.

I have a small body Pertronix distributor and the engine is tucked back close to the firewall. I didn't build the car but from what I've seen, the PO did a lot of good things that are nice to have.
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