94 4.0L Cooling fan diameter

[JoshT]

Does anyone know, or can they measure the diameter of a 94 Ranger 4.0L engine cooling fan for me? For all I know all 94s had the same diameter cooling fan regardless of the engine, but I don't have one available to measure.

Using the 94 Ranger 4.0L HD radiator for my V8 swap and plan to get the matching fan shroud, but haven't found one yet. With my engine radiator clearance I will be running an engine driven flex fan. Plan to go up to Summit on Friday to get that and a few other items, but need to know what diameter fan will fit in the shroud. I know that might be a little on the small side for my needs, but if it is I'll put an aux pusher fan in front of the radiator.

Thanks!

 

[JoshT]

Nobody knows what the diameter is.

Guess I'll be forgetting about the shroud and putting in the biggest fan that will fit. Would really rather have the shroud, I think it would cool a lot better with it.

 

[alwaysFlOoReD]

Your right about the shroud. But would your water pump fan mount height be the same between motors? Somehow I think a custom made fan would be the solution in any case so maybe you have saved a little cash towards your custom shroud that you would have needed anyway.
With some cardboard and tape you can mock up a shroud and get someone with a brake to bend it for you. Or bend it yourself with 2x4's bolt together onto the edge of some aluminum or steel sheet. A siding or window company will know someone with a brake that does cladding/capping for windows. I'd bend one up for ~ $100.00 if you were close by.
Good luck,

Richard

 

[JoshT]

Thought about that, but just figured I could make it work well enough. I would prefer a factory style shroud though.

As for bending metal I work in an aircraft depot maintenance facility. I definitely got access to machines that can bend, cut, and roll sheet metal. i not saying I know how to use all of it or am allowed to by the rules, but I have access to it and nobody really follows the rules about personal projects. About the only thing I don't have access to is welding equipment. The radiator core is 18x18 so I'll probably just go with a 17 or 18 inch flex fan as close to the radiator as I can. Then if I need to devise a shroud I will.

 

[bobbywalter]

what year truck?


94 radiators suck compared to hd 99's


you can buy a 600 hp bolt in for a 99 or run a v8 explorer setup.

 

[bobbywalter]

one of mine is about 16 1/4


i have a 94 on the b2 i will check tomorrow.

i ran a mark 7 fan for awhile with a dodge dakota v8 radiator at one point as well.

 

[bobbywalter]

well it got me wondering so i went out there and scared the coons out of the garbage....


looks close to 18 in...over 17 for sure with 10 blades. fawkin shroud is in the way.


that other one is 8 blades

 

[JoshT]

It's a 98 Explorer 5.0L going into an 86 Ranger. No room for the Taurus or Mark 7 fan, I've only got 2 inches of clearance between the radiator and water pump snout. Even if I were to cut the fan threads off the water pump I'd only have three inches and those fans need 4 minimum. I've already got a brand new 94 HD radiator installed in the truck, really don't want to cut into the core support to relocate it or to install a bigger swap specific radiator. FWIW I'm also planning to install one or two smaller aux pusher fans in front of the core if needed. If I get it together and find that the cooling is not adequate I will do something different, but there are enough people that have run this radiator with success that I want to try it.

Ok so assuming that everything lines up I should definitely be able to run a 17" in a factory shroud. Possibly an 18" could be fit, but either way I will probably be better off making my own shroud.

 

[adsm08]

Give me 10 minutes.

 

[adsm08]

18 inches.

 

[JoshT]

Thanks man, Bobby checked his and said between 17.5 and 18". Still appreciate you checking. Should be the same, but the verification is welcome.

EDIT: should have submitted when I typed instead of after dinner. Thanks for the verification, 18" fan it is.

 

[bobbywalter]

It's a 98 Explorer 5.0L going into an 86 Ranger. No room for the Taurus or Mark 7 fan, I've only got 2 inches of clearance between the radiator and water pump snout. Even if I were to cut the fan threads off the water pump I'd only have three inches and those fans need 4 minimum. I've already got a brand new 94 HD radiator installed in the truck, really don't want to cut into the core support to relocate it or to install a bigger swap specific radiator. FWIW I'm also planning to install one or two smaller aux pusher fans in front of the core if needed. If I get it together and find that the cooling is not adequate I will do something different, but there are enough people that have run this radiator with success that I want to try it.

Ok so assuming that everything lines up I should definitely be able to run a 17" in a factory shroud. Possibly an 18" could be fit, but either way I will probably be better off making my own shroud.

mark 7 fan is mechanical...the mark 8 is the big fat electric bastard. i have had mechanical 17 and 19 in super flex bullshit fans as well.




i can use regular mustang or truck fead and still have 5-7 inches between the pump and a fat ass 3 core radiator or nice 2 core aluminum with a 2 in body lift.

modifying the core and rails to fit a proper size unit and make room for a good fan is the easy button. what your doing is the hard thing.

in a 2wd this setup you intend to use works real good. even a small flex fan works ok up to 80's deg f with sub 250 hp..

in a 4x4 application, while its commonly done, i have also seen every one get mild fan rash up to totally destroyed radiators 100 percent of the time when wheeling with me. i have taken out radiators with 2 inches of clearance a few times so i cringe at 1/2 an inch...

but i also for many years relied twisting the frame up to keep the tires in traction. thats what kept driving my radiators forward


if this setup your doing dont work out its not like its hard to do later on in any case. just giving you something to consider before final assembly.