Click Here -> Please Consider Making a PayPal Contribution to the FordSix Forum!
2018 Contributors:
StarDiero75, curts56, DannyG, B RON CO, wsa111, Captainslow42, falconcritter
Econoline, THE FRENCHTOWN FLYER, 95FordFleetside, turbo6, Max_Effort, WorldChampGramp
cr_bobcat, C.S.Designs, pmuller9, gus91326, rwbrooks50, rocklord, drag-200stang, Big64my79Effie, CNC-Dude, gb500

2019 Contributors:
NJwpod, 1strodeo, mightynorseman, maxtrux, 6d7coupe, broncr, Phase3, 68Flareside240, bmbm40,
mustang6, WorldChampGramp, justintendo, BigBlue94, ags290, motorsickle1130, Rooster, ousooner919, ethanperry

Unknown->> M.Ketterer, T.Smith, J.Myers, P.McIntire - Please PM me (1966Mustang) and lemme know who you are!

240 cooling fan

Moderator: Mod Squad

Blairsville Ed
Registered User
Posts: 130
Joined: Sat Apr 22, 2017 3:39 pm
Location: North Georgia

240 cooling fan

Post #1 by Blairsville Ed » Sun Jul 14, 2019 12:03 pm

1968 F100. 240, 4 on the tree, 3.70

I just finished the ac system and it works well, however, yesterday I had the truck idling with the ac on for about 5 minutes and the temp gauge went up quite a bit. I have the original 17 inch steel fan with an add on clutch. The radiator is new although it’s larger than the original and there is NO shroud.
The clutch assembly moves the fan back from the radiator more than it was originally without the clutch.
A shroud would help, but.....
I wondering if a simple fix would be a molded 18 inch nylon fan without the clutch and get a spacer that moves it close to the radiator.
Also, how close to the radiator should the fan be.

Max_Effort
Registered User
Posts: 407
Joined: Sat Sep 29, 2018 12:26 pm

Re: 240 cooling fan

Post #2 by Max_Effort » Sun Jul 14, 2019 2:34 pm

A shroud is a top priority!

The flex-A-Lite nylon fans move a lot of air, but the air isn't necessarily goin to be pulled through the cooling bundle, it can just be recirculating air, and pulling from the sides. The shroud makes the fan more effective and directs the airflow.

If you have a long shroud, position the fan flush with the shroud opening.

Short shroud, one inch from
The radiator.

No shroud, one inch from the radiator.

User avatar
THE FRENCHTOWN FLYER
VIP Member
Posts: 5966
Joined: Sat Nov 09, 2002 9:25 pm
Location: FRENCHTOWN

Re: 240 cooling fan

Post #3 by THE FRENCHTOWN FLYER » Sun Jul 14, 2019 5:25 pm

Max_Effort wrote:A shroud is a top priority!

The flex-A-Lite nylon fans move a lot of air, but the air isn't necessarily goin to be pulled through the cooling bundle, it can just be recirculating air, and pulling from the sides. The shroud makes the fan more effective and directs the airflow.

If you have a long shroud, position the fan flush with the shroud opening.

Short shroud, one inch from
The radiator.

No shroud, one inch from the radiator.

X2

Plus, a later nylon multi-bladed fan will significantly increase parasitic drag on the engine - enough to affect mileage.
FORD 300 INLINE SIX - THE BEST KEPT SECRET IN DRAG RACING

Jesse73
Registered User
Posts: 49
Joined: Thu Feb 28, 2019 7:13 pm

Re: 240 cooling fan

Post #4 by Jesse73 » Mon Jul 15, 2019 12:56 pm

I just ordered this "universal" fan shroud from summit, they also sell different size configurations to match your radiator:

https://www.summitracing.com/parts/sum-380482-sh/

Haven't received it yet but it should work with my clutch fan and radiator combo according to the tape measure. I can report back once I have it if you like.

-Jesse

guhfluh
Registered User
Posts: 394
Joined: Wed Jul 10, 2013 9:40 am

Re: 240 cooling fan

Post #5 by guhfluh » Wed Jul 17, 2019 10:04 am

FWIW, it will not stay cool without a shroud and with A/C. Been there, even with oversized V8 radiator.

Make sure the clutch is operational. It should be locked up solid when hot.
1967 F-250 Crew Cab 2wd, 300 6cyl, T-170/RTS/TOD 4-speed overdrive
240 head, Offy C, EFI exhaust manifolds, Comp 268H, mandrel 2.5-3" exhaust, Edelbrock 500, Pertronix ignitor and coil, recurved dizzy. 200whp/300wtq

Who is online

Users browsing this forum: No registered users and 20 guests