C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

body mount #4 on body

Thread Tools
 
Search this Thread
 
Old Apr 19, 2009 | 04:48 PM
  #1  
cimivette76's Avatar
cimivette76
Thread Starter
Heel & Toe
 
Joined: Apr 2009
Posts: 17
Likes: 0
From: williamstown nj
Default body mount #4 on body

i have to change the body mounts on the body #4 how would you guys go about changing it? my body is off the car now.
Reply
Old Apr 19, 2009 | 07:09 PM
  #2  
Alan 71's Avatar
Alan 71
Team Owner
15 Year Member
Active Streak: 120 Days
Community Influencer
Top Answer: 5
 
Joined: Sep 2006
Posts: 31,159
Likes: 4,236
From: Westminster Maryland
Default

Hi C76,
I'd drill-out the six rivets you can get to, and clip the seventh off with a chisel from inside the car.
Then install 6 rivets, either the original type or 'pop' type.
You could cut a hole in the rear splash apron to get to the seventh rivet but that seems like just too much... everything.
Regards,
Alan
Reply
Old Apr 19, 2009 | 07:46 PM
  #3  
AWilson's Avatar
AWilson
Drifting
15 Year Member
 
Joined: Jun 2006
Posts: 1,912
Likes: 12
From: Schaumburg (Chicago) Illinois
Default

Originally Posted by Alan 71
Hi C76,
I'd drill-out the six rivets you can get to, and clip the seventh off with a chisel from inside the car.
Then install 6 rivets, either the original type or 'pop' type.
You could cut a hole in the rear splash apron to get to the seventh rivet but that seems like just too much... everything.
Regards,
Alan
I just did this about 2 months ago. That's how I fixed it except I used SS screws with nuts. I am not sure which is easier. Depends on what you have or are used to. But I also left out the seventh one.
Is all your glass intact? Mine wasn't because I ripped one of the mounts out glass and all when trying to loosen the bolt. Had to repair it. In that case it is important to make sure the cage nut is located properly.

Last edited by AWilson; Apr 19, 2009 at 07:49 PM.
Reply
Old Apr 19, 2009 | 08:30 PM
  #4  
cimivette76's Avatar
cimivette76
Thread Starter
Heel & Toe
 
Joined: Apr 2009
Posts: 17
Likes: 0
From: williamstown nj
Default

alright when you mean 7 rivets are you including the caged nut. cause that was already rotted and out when i got the car. i just see 2 on the sides and when towards the back of the car. i dont want to mess up the glass mine is fine. it is okay to use pop rivets? i dont need to use those factory rivets?
Reply
Old Apr 20, 2009 | 04:16 PM
  #5  
Alan 71's Avatar
Alan 71
Team Owner
15 Year Member
Active Streak: 120 Days
Community Influencer
Top Answer: 5
 
Joined: Sep 2006
Posts: 31,159
Likes: 4,236
From: Westminster Maryland
Default

Hi C,
I believe there are 2 rivets facing front, left, and right and 1 facing rear. The 1 facing rear needs to be cut to get it out and may be left off if you prefer. It needs to be cut out so the new reinforcement can be slipped into position.
I believe pop-rivets will work. It depends how original you want the repair to look when you're finished.
Regards,
Alan
Reply
Old Apr 20, 2009 | 04:33 PM
  #6  
AWilson's Avatar
AWilson
Drifting
15 Year Member
 
Joined: Jun 2006
Posts: 1,912
Likes: 12
From: Schaumburg (Chicago) Illinois
Default

Originally Posted by Alan 71
Hi C,
I believe there are 2 rivets facing front, left, and right and 1 facing rear. The 1 facing rear needs to be cut to get it out and may be left off if you prefer. It needs to be cut out so the new reinforcement can be slipped into position.
I believe pop-rivets will work. It depends how original you want the repair to look when you're finished.
Regards,
Alan
The cage nut goes in from the top and rivets to the glass. You want those to be riveted from the bottom so when you place the reinforcement in it will sit up against the glass just about flush. Then rivet what you can around the reinforcement. Again I used little screws and self locking nuts. I don't see why you couldn't ad a little glue to help. Like Alan said it just depends on how original you want to be. Make sure you use anti-seize on the body mount threads when you put the body back on. That area where the cage nut in seems to me like a good place for a puddle to sit. Might be a good idea to drill a drain hole of say about 1/8 inch. Maybe I will do that.

Last edited by AWilson; Apr 20, 2009 at 04:38 PM.
Reply
Old Aug 2, 2009 | 04:03 PM
  #7  
kellyr073's Avatar
kellyr073
Instructor
 
Joined: Nov 2008
Posts: 245
Likes: 0
From: Long Island, New York
Default

Can this be done with the body on?

Take out the body bolt, and then the rivets, and put a wedge in place enough to separate and remove the reinforecement.

I need to replace both #4 reinforcements.

Ecklers has them for $49 each. I have rivets.

Anything else I need while I"m replaceing them?
Reply
Old Aug 2, 2009 | 04:28 PM
  #8  
KeyWestJack's Avatar
KeyWestJack
Pro
10 Year Member
 
Joined: May 2006
Posts: 583
Likes: 0
From: Pittsburgh PA
Default

Originally Posted by AWilson
Might be a good idea to drill a drain hole of say about 1/8 inch. Maybe I will do that.


I think that is a good idea. Perhaps on the side facing the rear.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-1

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-2

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-3

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-4

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-5

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-6

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-7

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-8

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-9

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
Old Aug 2, 2009 | 08:35 PM
  #9  
barbs '69 resto's Avatar
barbs '69 resto
Account disabled by request 8 Feb 2010
 
Joined: Jan 2009
Posts: 45
Likes: 0
Default body moubt

I agree with Alan. If your body is off the frame as you mentioned it is a
easy job. When I did mine i chiseled the old heads off and did some slight adjustments to the new mounts for a better fit and to align the holes. I used correct aluminum rivets which i bought at the Vett Expo in Knoxville, I suggest you buy them too because they come in handy, then I used a modified air chisel to peen the ends The nut cage needs to be installed before the mount and you can use the same rivets. I also drilled a 3/8 hole in the mounts for water drainage.
Reply

Get notified of new replies

To body mount #4 on body





All times are GMT -4. The time now is 12:02 PM.

story-0
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-1
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-2
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-3
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-4
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-5
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-6
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-7
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-8
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-9
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE