• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Function test for fan clutch

I've got a direct drive 19" 11 blade reverse rotation fan on my '67 Coronet w 496" stroker n serpentine belt. Can't run a fan clutch due to space limitations and direction. In 125° summers, I cruise at 180° easy and idle after 10 minutes idling w a/c on at about 210° which is normal. Have factory shroud. But it is very loud from the fan roar. Here's a diagram of proper fan/shroud placement. View attachment 1640883
Nice drawing......except for the hardware layout. Millwright 101 rule NEVER use a lock washer and a flat washer together....the bolt is not locked to anything and can un-screw......
BOB RENTON
 
Thank you guys for all the information and input to this thread. I read everything carefully and will do my best.

Todays update:
We put radiator cleaner into the radiator and let it run for like 45 minutes. We drained it and cleaned it with water. After 4 times flushing it, the water came out clear. Looks good so far. We installed another fan without clutch. Tomorrow I will drive around the block and observe the temperature. Maybe it helped a bit. We will install the fan shroud anyway in the near future.

If it is still bad, we will get a new mesh into the radiator.

THANKS FBBO!
 
Thank you guys for all the information and input to this thread. I read everything carefully and will do my best.

Todays update:
We put radiator cleaner into the radiator and let it run for like 45 minutes. We drained it and cleaned it with water. After 4 times flushing it, the water came out clear. Looks good so far. We installed another fan without clutch. Tomorrow I will drive around the block and observe the temperature. Maybe it helped a bit. We will install the fan shroud anyway in the near future.

If it is still bad, we will get a new mesh into the radiator.

THANKS FBBO!
You're going to have to pull the front end off your car and get some equipment. We need some actual cfm #'s!

Report back!!
testo-420-p-ap-vel-005614_pdpz.jpg
 
Thank you!! Will look into what CFM means! Never too young or old to learn! :thankyou::luvplace:
If you revert back to your origional premise of air flow measurement, i assumed you were measuring VOLUME as in "****-ton". If you were measuring air by WEIGHT, as in a "ton", perhaps your tonnage measurement was EITHER one of the three types: are all a measure of mass (weight) the short ton aka US ton is 2,000/lbs. The long ton aka Imperial (British) ton is 2240 lbs. The third ton is the metric tonne which is, equal to 1000 kilograms, or approximately 2204 pounds. And air has a weight of 1 cubic foot of air at standard temperature and pressure assuming average composition weighs approximately 0.0807 lbs........(excerpted from fluid dynamics).......it depends on which "ton" is being used.
Therefore, a "****-ton" of air is lot of air......just thought you might like to know......
BOB RENTON
 
How many Kelvenator cooling fans to make a **** ton of air flow.
Divide by 3.14 :drinks:
Early Kelvanator and Servel refrigerators were powered by Natural gas and did not use electric and operated by convection not radiation using natural gas (CH4) @ 980 Btu/std cubic ft (low heating value).....fans were not required ...... (apples do not = oranges).....????
BOB RENTON
 
Early Kelvanator and Servel refrigerators were powered by Natural gas and did not use electric and operated by convection not radiation using natural gas (CH4) @ 980 Btu/std cubic ft (low heating value).....fans were not required ...... (apples do not = oranges).....????
BOB RENTON
Late model kelvanators bob .
Also your ( **** ton ) figures are off.
You did not account for moisture content.
 
Bob at Glen Ray Radiator told me with the engine off and cooled down, give the clutch fan a good spin with a finger, it shouldn't make more than 1 1/2 revolutions before stopping if it is in good shape. First order of business has been mentioned. Get that shroud. By the way, if your clutch fan has a spring on the front, it is a thermo clutch.
 
Nice drawing......except for the hardware layout. Millwright 101 rule NEVER use a lock washer and a flat washer together....the bolt is not locked to anything and can un-screw......
BOB RENTON
But......I took the fan off of an original Mopar the other day and it had place bolts holding it on. And I don't think place bolts take washers, do they?
And that guys drawing.....you can run the fan an inch from the shroud if you want to, but if your motor mounts are sloppy things can get noisy and ugly sometimes.
 
Late model kelvanators bob .
Also your ( **** ton ) figures are off.
You did not account for moisture content.
STANDARD temperature and pressure measurements generally account for density which includes moisture. You fid not specify PRESENT models (and average ambient operating conditions).....specifics are important.......the (**** ton) measurements are WEIGHT based...but volumetric measurements are generally what fan types and fan curves are based on. Perhaps you can supply specifics as noted in "Crane's Flow of Fluids"......punt......
BOB RENTON
But......I took the fan off of an original Mopar the other day and it had place bolts holding it on. And I don't think place bolts take washers, do they?
And that guys drawing.....you can run the fan an inch from the shroud if you want to, but if your motor mounts are sloppy things can get noisy and ugly sometimes.
What is a "place bolt"? Lock washers can be: internal teeth, external teeth, (shake proof type), split collar, high collar type (used with Allen head cap screws). Please describe a place bolt or a pix.
BOB RENTON
 
Like a flywheel bolt which doesn't have a washer

View attachment 1641437
Thank you for the information.....never heard of them b4. They appear to be single use hardware, sort of similar to Elastic Stop nuts or cone lock nuts, which are single use hardware. I also prefer TORQUE To YIELD fasteners like SA 325 structural hardware. Loctite products offer similar and often better "anti come loose" materials, especially fly-wheel to crankshaft mounting hardware
BOB RENTON
 
Hi

I have an original 68 fan with fan clutch wich seems original as well. However these parts are 50+ years old and I am not sure if they work properly.

I was wondering if there is a way to test the fan clutch. Maybe someone did it and give me a hint.

I was thinking about to put the fan on a drilling machine and hold the fan in my hands. When the machine is spinning I would blast hot air onto the ??spring scroll?? and wait if something is changing.

Maybe some technical terms are wrong! Please correct me!

Any help appreciated and thanks fbbo!
Yannik
OK, so it's Saturday morning here.....just doing the weekly finger count.

Have you still got all your digits?

:lol:
 
Being an engineer, I deal with specific values not imagined or colloquial expressions that mean Nothing (?) except to the person or person expressing the phraseology in lieu of real thought, the exception bring the actual understanding of the terminology used and being able to switch between volume and weight differences.......so.....how much air is a "**** ton" in actual measurable quantity?? Just curious......
BOB RENTON
 
Fan clutch test = spin that bastard by hand. If it rolls more than 1/2 turn....replace it.
Lordy how the internet overthinks everything.....


Nice drawing......except for the hardware layout. Millwright 101 rule NEVER use a lock washer and a flat washer together....the bolt is not locked to anything and can un-screw......
BOB RENTON
But millwrights are nothing more than "jackers and wenchers".....hahahha!
C'mon, we're electrical guys....we rule the world. That's just the way it is, you know that!
:lol::lol::lol:
 
Fan clutch test = spin that bastard by hand. If it rolls more than 1/2 turn....replace it.
Lordy how the internet overthinks everything.....



But millwrights are nothing more than "jackers and wenchers".....hahahha!
C'mon, we're electrical guys....we rule the world. That's just the way it is, you know that!
:lol::lol::lol:
Electricians eat volcanic lava and piss perfection. :lol:

 
Auto Transport Service
Back
Top