The Supercar Registry

The Supercar Registry (https://www.yenko.net/forum/index.php)
-   Technical & Restoration (https://www.yenko.net/forum/forumdisplay.php?f=86)
-   -   1968 z28 fan blade (https://www.yenko.net/forum/showthread.php?t=94083)

firez 08-27-2007 11:26 PM

1968 z28 fan blade
 
Anyone have a picture of the correct 5 blade 4 rivet fan blade that was factory on a 68 Z

Charley Lillard 08-28-2007 12:46 AM

Re: 1968 z28 fan blade
 
1 Attachment(s)
Here you go. https://www.yenko.net/attachments/286114-P1010001.JPG

firez 08-28-2007 02:18 AM

Re: 1968 z28 fan blade
 
Thanks that is the one that was in the trunk of my z when I bought the car and the engine had a flex fan on it. Nice to know I have the correct one.

3macs1 08-28-2007 02:36 PM

Re: 1968 z28 fan blade
 
Check the hole diameter to make sure it is 2 5/8 inches. There is another fan that looks identical to this in 68 also a 4 rivit but has a smaller hole diameter and not correct for the Z.

firez 08-28-2007 04:05 PM

Re: 1968 z28 fan blade
 
I will measure it when I get home,never knew that.

Charley Lillard 08-28-2007 06:00 PM

Re: 1968 z28 fan blade
 
1 Attachment(s)
size...3 1/4" bolt spacing https://www.yenko.net/attachments/286214-P1010006.JPG

427.060 08-28-2007 08:09 PM

Re: 1968 z28 fan blade
 
Don't mean to change the subject here but I have always wondered why the spacing on factory fan blades is not even.
James

bigchevydaddy 08-28-2007 08:46 PM

Re: 1968 z28 fan blade
 
OK, so who taught Charlie how to use a ruler? Figuring out that measurement involves higher math!

Charley Lillard 08-28-2007 08:47 PM

Re: 1968 z28 fan blade
 
LOL...Bigchevydaddy...The ruler was to show distance from bolt centers.

Mr70 08-28-2007 09:09 PM

Re: 1968 z28 fan blade
 
Miss South Carolina couldn't have answered that any better.
Such as..

bigchevydaddy 08-28-2007 09:33 PM

Re: 1968 z28 fan blade
 
Darn, and I was still stuck on the reference to hole diameters! ;-)

HEMIBEE 08-30-2007 08:05 PM

Re: 1968 z28 fan blade
 
i think air much like water, can cavitate if the blades were all spaced the same, i think the odd spaced blades move more air?? https://www.yenko.net/ubbthreads/imag...s/confused.gif

Dusk Blue Z 08-30-2007 08:20 PM

Re: 1968 z28 fan blade
 
My guess on the spacing would be for reduced vibration or noise levels. The odd spacing would break up beat frequencies caused by the fan turning through still or moving air.

Mike

427.060 08-30-2007 08:58 PM

Re: 1968 z28 fan blade
 
Thanks for the responses. Why do the aftermarket fiberglass and flex fans have equally spaced blades?
James

WILMASBOYL78 08-30-2007 10:24 PM

Re: 1968 z28 fan blade
 
[ QUOTE ]
My guess on the spacing would be for reduced vibration or noise levels. The odd spacing would break up beat frequencies caused by the fan turning through still or moving air.

Mike

[/ QUOTE ]


Not sure the spacing makes it quieter..the 69-70 BB Nova fans have the same type of staggered setup..they make a lot of noise!!!....most guys took them off back in the day and installed a flex fan.

wilma

Kurt S 09-06-2007 11:57 AM

Re: 1968 z28 fan blade
 
The staggered spacing was for noise.
http://www.camaros.org/coolingsystems.shtml

BARRY 09-08-2007 05:59 PM

Re: 1968 z28 fan blade
 
Hi: What are these fans worth?

BARRY 09-08-2007 06:44 PM

Re: 1968 z28 fan blade
 
1 Attachment(s)
5 RIVETS WITH 68 STAMPED IN

3macs1 09-08-2007 09:57 PM

Re: 1968 z28 fan blade
 
[ QUOTE ]
Hi: What are these fans worth?

[/ QUOTE ]

I have sold on e-bay the 4 rivet, 5 blade small hole and bolt pattern for 125.00 and the 4 rivet large hole and bolt pattern for 1200-1600.00.
5 rivet I could not give them away. I seen a nos one 5 rivet close for 100.00.


All times are GMT. The time now is 06:51 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.


O Garage vBulletin Plugins by Drive Thru Online, Inc.