Plastic fan replacements

[Tom Wesenberg]

Originally Posted by Yellowfordcoupe

At the last tour my stock two blade fan broke off one shroud and hit the water neck of my radiator, also the water pump case broke in several pieces and the head got a big scratch inside, where the water pumps impeller runs arround.
Should I change this head or did this scratch don't have a affect on running the engine. I also want to use the alloy 2 blade fan and hope this one don't brake off at the pulley like my original one. Have got several prices for my 68-B, because it have had all this original stuff installed. That's why I'm a little pissed off by using reproduction parts now.
Did anybody have good appearence with the Snyders high compression head and could I use my old cylinder stud bolts with it?
Thanks for helping me.

The marks on the head from the impellor should pose no problem. The Snyder's 5.5 head is very nice and original looking, and a good thing to add more horsepower. I'm going to use my original studs when I install a higher compression head. Most, if not all the catalogs say to use new studs, but with the loose fit of the new studs I'd rather use my Ford original studs.

[Yellowfordcoupe]

Thanks for helping me out with my question on the high compression head from Snyders.
Has anybody a good experience with the 2 blade alloy fan?

[hardtimes]

Originally Posted by Louis

I think that Hardtimes logic is the more blades you have on a fan the more air you move even though the two and four bladed fans have proven to be more efficient then the six bladed fans .
I have a feeling [as we speak] Hardtimes is out in his garage looking for his old two bladed fan ....We never stop learning.

Ha, ha! Actually, my 'old two bladed fan' is hung on the wall waiting to give it to anyone in need..need one
In fact, I have a four blade on my high spinning B, and a six blade plastic on my stock A.
"PROVEN"...by what method/process/by whom? Have you seen any such proof? Are figures, alone, 'someone' writes ..said proof? Seems so. OK, if written words/numbers satisfy youse guys, go to your catalogues and read what is said about the various bladed fans for Model As and which cost more. Isn't cost usually used as a guide line for 'better' and 'quality' also?
Just like you buy more expensive anything...and expect it to be better..no?
Just like everything else in life, everybody has an opinion and is an 'expert' on fan technology/efficacy..yada! Geeze, it's amazing that we (mostly) agree that the old original fans , after 80 years, are an unacceptable risk.
Now , I've just got to go back to GMC and see if they will take that multi bladed fan off of my 8.1 liter engine and install a two blade...cause it's PROVEN that that's best

[josh1331]

thank you all for the input , appreciate good advice..josh

[MrTube]

I had an "extreme duty" fan clutch on my 92 C2500HD which was a big mistake. I installed it to help keep my idling temps down when I converted the A\C to R-134A. I was able to get 36F vent temps in stopped traffic on a 95F day no problem HOWEVER, The fan would actually ROAR going 30 MPH down the road if it was hot enough out.

What really stunk was stop lights on major highways. I couldn't get going because of my fan roaring, waiting for the clutch to free up. If you tried to bring the engine above 3K with the clutch not freed up the belt would squeal. That was one hell of a fan and one hell of a clutch .

I'm sorry but that 5+ blade fan moved A LOT more air than ANY model A fan. I'm willing to bet it was able to consume more than 40HP all on its own. Again, pitch matters just as much as the numbers of blades.


The 2 blade aluminum fan is great on the "A". IMO its the only fan for the "A"

[modelAtony]

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have over 60,000 miles on mine from MIKES

[Dick Deegan]

Wasn't the four blade fan stock on the Model A in 30 and 31? Please correct me if I am wrong.

Dick

[31Tudor]

Originally Posted by Dick Deegan

Wasn't the four blade fan stock on the Model A in 30 and 31? Please correct me if I am wrong.

Dick

Not on any passenger car. I cannot speak for AA's but I am pretty sure they were never used factory on anything.

[Keith True]

I still like to use the four blade fans.Not the pot metal hub ones,but the real thing replacements from the 30's,40's,etc.I do keep an eye on them,after all they are old,but zero problems that I didn't catch in plenty of time.If they have rust in the sandwiched parts I won't use them.My ONLY fan failure was an aluminum one that came apart at the root of one blade.I inspected it a few times in the beginning,but that was just to make sure it was not working loose on the shaft.Then I never bothered again.I don't know if it would have given a warning like a steel fan or not.When the aluminum one let go I was in front of a greenhouse where I knew the owners.They lent me a pair of bolt cutters to lop off the other blade.I never even went back home,I just kept on driving and used the truck the rest of the summer.The next winter I put the four blade back on that was on it when my uncle parked the truck in 1954.It is on there today and doing fine.

[Bob-A]

I believe I read somewhere that the Ford company itself supplied a 4
blade fan for replacement and/or retrofit on Model-A's later in the 30's.
True??.........

Bob-A

[steve s]

There's another option, for those who really want to step up their apostasy game. Dennis Cling sells a plastic fan with serpentine belt drive. The goofy spacing of the blades is supposed to be best for eliminating harmonic vibrations.



Steve

[MrTube]

Steve,

My GM fans always had that kind of spacing. I always wondered why two blades were kind of off on their own!