body mounts
Thread Starter
Navigator
Joined: Nov 2011
Posts: 9
Likes: 0
From: HULL IL
body mounts
I have a 79 that needed body mounts. I decided to go with polyurethane instead of rubber. Is this a good choice? I am also confused about how they go. The polyurethane bushings have 1 that is cone shaped and one that is flat with the flange that goes into the frame mounting hole. Does the cone shaped mount go on the bottom or top? I'm doing mount 4. The rear end. Most thing I have seen with the cone shape show a receiving bushing with the opposite shape in the middle but the bushing I have are not that way. I got them from Ecklers
Melting Slicks
Joined: Mar 2007
Posts: 2,520
Likes: 11
From: Hinckley OH
On my '74 for mount 1, 4, 5, and 8 the cone shaped one goes on top. On 2, 3, 6 and 7 it goes on the bottom. I just did mine about 4 hours ago.
Last edited by my 76 ray; Nov 30, 2011 at 12:41 AM.
Safety Car
Joined: Oct 2007
Posts: 3,729
Likes: 267
From: Austin Texas
Corvette of the Year Winner 2017
2016 C3 of Year Finalist
I believe in the picture your bottom donut is upside down.
also see the 1/8" gap from the top donut to the frame, looks like that one is not seated in the pocket mount like it should be.
also see the 1/8" gap from the top donut to the frame, looks like that one is not seated in the pocket mount like it should be.
Thread Starter
Navigator
Joined: Nov 2011
Posts: 9
Likes: 0
From: HULL IL
I believe your right 69vette. The flange on the flat bushing should go into the hole on the body support bracket. And by looking at the cone shaped bushing the larger end would go better against the washer on the bottom. But like I said I wasn't sure if the flat one went on top or bottom because you could put the flange of the flat one in the mounting bracket hole from the bottom too. I wish there was a spec for the clearance. I may just get the rubber ones so that I get this right. I don't want to cause undo stress.
Thread Starter
Navigator
Joined: Nov 2011
Posts: 9
Likes: 0
From: HULL IL
Thanks for the input ron. I think yours are right but as stated above I want the flange in the flat bushing to be seated in the mount and I'm going to put the cone in with the large end to the washet
Melting Slicks
Joined: Mar 2007
Posts: 2,520
Likes: 11
From: Hinckley OH
Melting Slicks
Joined: Apr 2008
Posts: 2,625
Likes: 242
From: Russell Ontario
St. Jude Donor '09
OK sorry the mount was still loose when the pic was taken I was writing an article , but I thought the bottom one was on wrong too so I looked at the instructions again and that's they way it was, I have done about 10 cars with different kits and they are all different . Some bushings are the same , top or bottom . I have pics of the other ones and ,some look really wrong! This is another type I came across , car is a 76 and both bushings are exactly the same . But on this one I had to replace the steel support .Again the bushing is not tightened. Ron 
Last edited by RonR80; Dec 1, 2011 at 01:24 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: Mar 2007
Posts: 2,520
Likes: 11
From: Hinckley OH
Those instructions are for the type in your first picture above. I used the part numbers in the instructions to determine which one went on top and bottom. According to those instructions, yours is wrong.
Last edited by my 76 ray; Dec 2, 2011 at 08:40 AM.
Safety Car
Joined: Mar 2005
Posts: 4,255
Likes: 82
From: Brampton Ont.
Burning Brakes
Joined: Oct 2001
Posts: 911
Likes: 5
From: TN
original type rubber mounts
I have a 79 that needed body mounts. I decided to go with polyurethane instead of rubber. Is this a good choice? I am also confused about how they go. The polyurethane bushings have 1 that is cone shaped and one that is flat with the flange that goes into the frame mounting hole. Does the cone shaped mount go on the bottom or top? I'm doing mount 4. The rear end. Most thing I have seen with the cone shape show a receiving bushing with the opposite shape in the middle but the bushing I have are not that way. I got them from Ecklers
Safety Car
Joined: Mar 2005
Posts: 4,255
Likes: 82
From: Brampton Ont.
I notice some use the large size body washers where as some use the standard square aftermarket washwers? Does it really make a difference as I assume the body washers are a fraction of the price.
Safety Car
Joined: Mar 2005
Posts: 4,255
Likes: 82
From: Brampton Ont.
I figured as much, I was wondering if the factory washers were really worth the extra money? Seems the body washers would do a good enough job, I just don't know if the inside hole is the right size.
