fan is hitting cover
Thread Starter
Heel & Toe
Joined: Sep 2008
Posts: 24
Likes: 0
From: manassas VA
fan is hitting cover
Hey guys, i need help fixing this annoying problem. My corvette's fan keeps on hitting its cover on the right side every time i turn the car on. The fan is closer to the right side than the left, but when i tried loosening and moving the fan cover farther to the right, i couldn't move it far enough. How can i fix this problem?
any help would be appreciated
any help would be appreciated
Le Mans Master
Joined: Feb 2000
Posts: 7,032
Likes: 2
From: Newburgh NY
I had the same problem years back with the 78 after ripping it all apart and putting all new junk in it. Loosened the shrough and tried moving it over but wouldn't go enough. The fan just touched it enough to almost sound like cards in a bicyle wheel.
Figuring it was the new motor mounts I put a spacer in the right hand side motor mount to push the motor away from the fan. At the time I couldn't find a quicker/better solution and that fixed it. I think the new motor mounts cause the motor to sit just a little off from original. Plus the car had been hit at one point and although no visible issues with the frame it could have been tweaked a bit.
Figuring it was the new motor mounts I put a spacer in the right hand side motor mount to push the motor away from the fan. At the time I couldn't find a quicker/better solution and that fixed it. I think the new motor mounts cause the motor to sit just a little off from original. Plus the car had been hit at one point and although no visible issues with the frame it could have been tweaked a bit.
Drifting
Joined: Jul 2008
Posts: 1,873
Likes: 27
From: Sonora CA
I have the same problem on my 73, the fan is closer to the right side of the shroud than the left. I have been under the car several times to look at the mounts, but can find nothing that looks out of place. I did have the transmission replacer recently, is it possible thar the transmission tailshaft is not centered?
Le Mans Master
Joined: May 2006
Posts: 5,814
Likes: 414
From: Pittsburgh suburbs Pa.
I have the same problem on my 73, the fan is closer to the right side of the shroud than the left. I have been under the car several times to look at the mounts, but can find nothing that looks out of place. I did have the transmission replacer recently, is it possible thar the transmission tailshaft is not centered?
Instructor
Joined: Nov 2007
Posts: 156
Likes: 1
From: Edgewood Kentucky
The engine torque will try to lift up on the left side of the engine making the right side of the fan hit the shroud. Mine did this when the left side mount broke. I could see the engine raise up on the left side when I revved up the engine--did't figure it out til I ran with the hood up.
Drifting
Joined: Oct 2005
Posts: 1,528
Likes: 148
From: East London/SW Essex UK
The engine torque will try to lift up on the left side of the engine making the right side of the fan hit the shroud. Mine did this when the left side mount broke. I could see the engine raise up on the left side when I revved up the engine--did't figure it out til I ran with the hood up.
Its only when you run without the hood that you realise how much the engine moves with power-on & power-off
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Drifting
Joined: Jul 2008
Posts: 1,873
Likes: 27
From: Sonora CA
I never noticed it before replacing the trans, but it could have already been that way. Yhere are no marks on the shroud, so I'm pretty sure that the fan is not hitting it. I did look at the tailshaft this morning, it is already very close to the right side of the tunnel. probably suppose to be like that in order to make room for the parking brake pulley. So I guess I'm back to tired motor mounts.
Drifting
Joined: Jul 2008
Posts: 1,873
Likes: 27
From: Sonora CA
As I stated, everything looks normal, I can't see anything that looks out of place. As soon as I get it running again, I will check the mounts by torqueing the engine. In any event I like the comments about the poly motor mounts and may replace the originals anyway. After all, most of this stuff is 35 years old and due.