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Massive Vacuum Canister Removed

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Old Oct 27, 2006 | 04:39 PM
  #1  
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Default Massive Vacuum Canister Removed

I finally got around to removing that vacuum canister. I haven't even touched the Vette in a few months, as some of you may notice I haven't posted here in a while. Anyways, what a pain in the *** it was to get that thing out...

The only thing that concerned me was that the front end seemed to droop after I removed the canister. So much that the fenders touch the front of the tires if I turn the wheel all the way to one direction. I'm assuming that this is because I haven't bolted the bumper to frame support brackets back yet. (I had to unbolt them to get at the canister) But just to verify, the canister is not a critical part of the frame or anything like that is it?

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Old Oct 27, 2006 | 04:51 PM
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the center of the nose is supported by that front bracket there, I think most of the guys that take that off make some custom pieces to reinforce that area. Most of the weight is carried by those side frame extensions though, so as long as those are still there it shouldn't be having any tire clearance issues.
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Old Oct 27, 2006 | 04:54 PM
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Support that front end A.S.A.P., that means NOW!
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Old Oct 27, 2006 | 05:48 PM
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I just did this. Check it out here:
http://forums.corvetteforum.com/show....php?t=1510906
The easiest way for me to support the front end was to remove the brackets from the air reservoir, and use them to tie the radiator support to the front bumper with the original brackets. That plus the frame extension brackets supported the front end real nice. I can sit on my front bumper and the only give is thru the suspension. Be sure to support the front end up into it's original position when attaching all the brackets, or your lower radiator hose outlet will rub against your front sway bar.
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Old Oct 27, 2006 | 06:23 PM
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Originally Posted by big_G
Support that front end A.S.A.P., that means NOW!
I agree 100%. When I replaced my vacuum tank, I put wood blocks under the nose until I could get the new one in, otherwise it sagged about 4 inches. It was only a matter of time before I would have cracked the fiberglass on the fenders. Luckily I caught what was going on before bad things happened.
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Old Oct 27, 2006 | 06:29 PM
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If not supporting the bottom of the radiator support to the frame,
you will soon start to develop cracks at the front corners of the
fenders ... followed closely by the bumper cover tearing.

The radiator support holds up the fenders ... bolted to inner fenders and frame (vias giant vacuum tube).
If totally removed, you need to fabricate a support.
Relying on the two bumper bolts at the corners will not cut it.
I had the torn bumper cover and cracked fenders ... from it just sitting unsupported.

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Old Oct 27, 2006 | 06:46 PM
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My front end is tied to the radiator support/frame in four places. The frame on both sides, and the two big brackets that tie the radiator support to the front end. Take a look at this picture. Only one of the brackets are in place in this photo. I removed the bolt brackets from the air tank, and used them to replace both of the massive middle brackets. The brackets are attached to the lower radiator support in the rear, and the bumper in the front. I am very satisfied with the support. I may not survive a 5mph impact unscratched anymore though.

Last edited by Bee Jay; Oct 27, 2006 at 06:52 PM.
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Old Oct 27, 2006 | 10:26 PM
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Originally Posted by torqvette
But just to verify, the canister is not a critical part of the frame or anything like that is it?
in the future, if you are going to make modifications to your car and the structure support than it would benefit you greatly to ask this important question BEFORE you take the action.........
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Old Oct 27, 2006 | 10:39 PM
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I made a new one already. The old one weighted 39 or 49 pounds. Not positive on which. I let the front end sag down around 2 inches on my new one.
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Old Feb 12, 2013 | 06:43 PM
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I just removed the tank from my 77. I didn't seem to have any problems. I did support the nose during removal. After I got it out just bolted the bumper brackets back on to the frame. No drooping no drama. The front end is solid and the radiator is just as it was before the removal.
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