Author Topic: cooling fan and sticker mark on trunk deck  (Read 759 times)

69Z28-RS

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Re: cooling fan and sticker mark on trunk deck
« Reply #15 on: November 05, 2017, 05:07:56 AM »
i need one of those fan blades if someone has one for a reasonable price. mine blew apart at the pure stock drags. '68 L78. i attached a pic but don't know if it will show up.


Wow!  I've never seen a factory steel fan blade come apart before!
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

L78racer

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Re: cooling fan and sticker mark on trunk deck
« Reply #16 on: November 05, 2017, 05:57:08 PM »
in this pic you can see where it was cracked to the right of the right hand bolt. it just let go. luckily it went down and to the right in the area of the lower rad hose.

Paul

KurtS

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Re: cooling fan and sticker mark on trunk deck
« Reply #17 on: November 06, 2017, 02:08:19 AM »
A good welder can fix that. Not sure I'd run it at the drags though....
Kurt S
CRG

L78racer

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Re: cooling fan and sticker mark on trunk deck
« Reply #18 on: November 06, 2017, 02:44:01 PM »
right, ok for show car but i would not want to have it hurt someone down the road. i was very lucky it didn't hurt me or anyone else. could have been really bad had it happened on the track. we were doing some spirited driving in the pits checking something out and it let loose. check your fans, guys.
Paul

Tx-Z 302

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Re: better pics of my fan
« Reply #19 on: November 16, 2017, 10:47:31 PM »
 Here is a few more pics of the fan i tried to use a tape measure to show sizes as best i could, looking to see if its real or repop?
Chris W

z28z11

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Re: cooling fan and sticker mark on trunk deck
« Reply #20 on: November 17, 2017, 02:38:25 AM »
Looks like 3-1/4 BC to me, markings correct. I'd venture it's the genuine article -

Regards,
Steve
1968 Z28 M21/U17 BRG/W
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06

z28z11

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Re: cooling fan and sticker mark on trunk deck
« Reply #21 on: November 17, 2017, 03:04:01 AM »
right, ok for show car but i would not want to have it hurt someone down the road. i was very lucky it didn't hurt me or anyone else. could have been really bad had it happened on the track. we were doing some spirited driving in the pits checking something out and it let loose. check your fans, guys.

Paul,

I take it by the two washers under the bolt heads that the bolts likely bottomed out before proper torque could occur - wonder if that affected the fatigue that ultimately broke the fan. Bent or loose on the clutch probably accelerated the breakage for sure, especially if it was cracked on one side.

Kurt"s right - I'd have a competent welder repair it and put it away (or street it) - they're just too hard to come by. Run a lo-po at the drags if you want the appearance; the diameter and pitch are the same, and they sure are easier and cheaper to locate (also reproduced).

Regards,
Steve
1968 Z28 M21/U17 BRG/W
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06

L78racer

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Re: cooling fan and sticker mark on trunk deck
« Reply #22 on: November 18, 2017, 12:33:32 AM »
no the bolts did not bottom out. i just customarily use a flat and a lock on this type of attachment. clutch was purchased new by me and has seen lots of duty. all ran very straight and smooth. i believe this fan is original to the car. i'm not going to weld it. it's wall art now. i'll find a used one someday.
Paul