body mount ?
Thread Starter
Melting Slicks
Joined: May 2006
Posts: 2,369
Likes: 103
From: Centerville Louisiana
body mount ?
When you change your body mounts the new rubber height changes the height of the whole cabin pretty much the same all the way around? My old ones were in pretty bad shape.Couldn't really tell if shims were present, should I just put a shim at each mount like it shows in the directions? I measured the space between the fiberglass and the frame there is a fair amount of difference in the #4 mounts.
Team Owner
Joined: Sep 2006
Posts: 31,270
Likes: 4,362
From: Westminster Maryland
Hi C,
The shims are really used to obtain a good fit for the door and hood gaps. I'd start with 2 shims at each location and add or subtract at each mount to get gaps you're satisfied with.
Determining where to add or subtract and the effect it will have on the gaps takes some experimenting.
The factory had cars with zero shims and five shims on the same car.
Regards,
Alan
The shims are really used to obtain a good fit for the door and hood gaps. I'd start with 2 shims at each location and add or subtract at each mount to get gaps you're satisfied with.
Determining where to add or subtract and the effect it will have on the gaps takes some experimenting.
The factory had cars with zero shims and five shims on the same car.
Regards,
Alan
Thread Starter
Melting Slicks
Joined: May 2006
Posts: 2,369
Likes: 103
From: Centerville Louisiana
Dumm question, all the shims in the package are the same thickness, seems like it would be to much. I measured my gaps around the doors their pretty much the same. wouldn't the shims only adjust vertical or the height? Also the new bushing are sure to add to the height
Last edited by croaker; Dec 14, 2010 at 04:55 PM. Reason: add
Team Owner
Joined: Sep 2006
Posts: 31,270
Likes: 4,362
From: Westminster Maryland
Hi c,
The body is flexible enough that the number of shims in place torque/twist the body somewhat when the body mount bolts are tightened.
This is especially evident on convertibles. You see the effect of shims for example when you have a door gap that's wide at the top and narrower at the bottom of the rear of the door. Shims in the right place can even that gap.
Regards,
Alan
The body is flexible enough that the number of shims in place torque/twist the body somewhat when the body mount bolts are tightened.
This is especially evident on convertibles. You see the effect of shims for example when you have a door gap that's wide at the top and narrower at the bottom of the rear of the door. Shims in the right place can even that gap.
Regards,
Alan
Thread Starter
Melting Slicks
Joined: May 2006
Posts: 2,369
Likes: 103
From: Centerville Louisiana
Mines a coupe so it should be a little more rigid. My #2 mounting bolts are awful. This is gonna be a lot bigger job then I figured. I really didn't want to lift both sidea at the same time
Safety Car
Joined: Aug 2001
Posts: 4,883
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From: North Easton Mass
Rick B.
Advanced
Joined: Nov 2017
Posts: 72
Likes: 16
Hi c,
The body is flexible enough that the number of shims in place torque/twist the body somewhat when the body mount bolts are tightened.
This is especially evident on convertibles. You see the effect of shims for example when you have a door gap that's wide at the top and narrower at the bottom of the rear of the door. Shims in the right place can even that gap.
Regards,
Alan
The body is flexible enough that the number of shims in place torque/twist the body somewhat when the body mount bolts are tightened.
This is especially evident on convertibles. You see the effect of shims for example when you have a door gap that's wide at the top and narrower at the bottom of the rear of the door. Shims in the right place can even that gap.
Regards,
Alan
That is exactly what I am experiencing on my 72 Convertible. Both the Driver and Passenger side has a wide gap at the top rear of the door, although the margins on front of both doors is perfect. Where would you suggest I start my inspection?
Thanks in advance for your expertise!
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Melting Slicks
Joined: Jul 2010
Posts: 3,176
Likes: 633
From: perth western australia
How many shims do you have in both number 4,s and how many in both number 3,s for starters.
It sounds like it's add to 4,s to push the back end up or take away some 3,s to pull the middle down some .....
OR A COMBINATION OF BOTH .
Pictures of both gaps would help people to help you.
It sounds like it's add to 4,s to push the back end up or take away some 3,s to pull the middle down some .....
OR A COMBINATION OF BOTH .
Pictures of both gaps would help people to help you.
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
I've been told by a corvette mechanic the shims are to ensure the doors operate correctly. Or you could say the test for body mount shims is the door operation. So it may be a lift and shim and repeat to get it right.
So the trick to lifting the body from under the door sill is use a 2x4 cut to the length and lift the body with that. Here's mine:
view from rear of wheel well trying to show entry under body channel. Body lifted 4".
I do just one side at a time.
Hope this helps and good luck.