...just lucky I was in right lane on the freeway....
In case your considering a flex fan....
Melting Slicks
Joined: Jun 2002
Posts: 2,844
Likes: 99
From: Orrtanna Pa.
I switched to electric only immediately after seeing the damage the flex fan did to the fan shroud.
In retrospect,why would you even need a fan if you're turning 10,000 rpms? Seems to me you are already moving at least 35 mph,where the airflow through the radiator will be far greater than the fan could possibly pull.
In retrospect,why would you even need a fan if you're turning 10,000 rpms? Seems to me you are already moving at least 35 mph,where the airflow through the radiator will be far greater than the fan could possibly pull.
Last edited by The Money Pit; Apr 8, 2008 at 02:34 PM.
Drifting
Joined: Aug 2007
Posts: 1,924
Likes: 6
Race Director
Joined: Feb 2005
Posts: 16,100
Likes: 17
Lost a fan blade on a 51 Ford flathead once...bent the blade stuffing motor in...went for a drive without hood....all I seen was a black blur and then coolant on windshield as blade severed one hose on way out...exciting stuff...wuz 17 at the time...
Race Director
Joined: Dec 2007
Posts: 14,345
Likes: 4
From: Hartselle AL
St. Jude Donor '09
Burning Brakes
Joined: Feb 2004
Posts: 924
Likes: 2
From: Kearneysville West Virginia
My 69 GTO came from the factory with a stainless steel flex fan. I thrashed that car good when I was a young man and when I sold the car last year with 180k miles, it still had the original flex fan.
Race Director
Joined: Jan 2000
Posts: 13,018
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Oops....I'm in trouble. I've got the same fixed stainless fan that I've used on many different cars. I think it's stamped 1981! And it's made many a 7000+ RPM pass.
In fact when I chassis dyno'd it with and without the fan there was very little difference. I had bought electrics to install, but considering the dyno results, the weight of the dual fan assy and the fact it always stayed cool with the flex I put it back on for simplicity's sake. Took the electrics back to the store.
JIM
In fact when I chassis dyno'd it with and without the fan there was very little difference. I had bought electrics to install, but considering the dyno results, the weight of the dual fan assy and the fact it always stayed cool with the flex I put it back on for simplicity's sake. Took the electrics back to the store.
JIM
Melting Slicks
Joined: Mar 2008
Posts: 2,336
Likes: 1
From: North Bellmore Ny
St. Jude Donor '09
I have the same fan a gkull. It's rated at 10,000 rpm but I only push my ZZ4 to 6000 (where my rev limiter is set to). No problems in the 8+ years running it. Just don't go down to Pep Boys and buy a cheap one. Buy the best, highest rated rpm one out there and you should be fine.
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Race Director
Joined: Feb 2005
Posts: 16,100
Likes: 17
The only reason that I avoided using Flex fans is the design of the blades "flattening"out at higher RPMs....the constant "flexing" of the blades....I suppose that in a high reving race car they are benificial....
Anyway,I have stuck to the fan/clutch set up as it serves my needs and is reliable...only draw back is the new clutches...most do not stay "locked up" long enough like the originnal GM units...
Anyway,I have stuck to the fan/clutch set up as it serves my needs and is reliable...only draw back is the new clutches...most do not stay "locked up" long enough like the originnal GM units...