Air bag conversion retaining auto leveling. - Chevy Impala SS Forum
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post #1 of 16 (permalink) Old 01-16-2007, 07:30 PM
dsmerritt
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This is probably on the forum somewhere, but I've looked and didn't see this specific info.
Question: How do you adapt the factory air lines to a set of air lift bags in the springs? This should allow the leveler to work properly while getting rid of the air shocks themselves. By the way, air shocks have been junk as shocks for 40 years now.
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post #2 of 16 (permalink) Old 01-16-2007, 07:33 PM
caddyguy109
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Good question I was just about to ask myself--again without doing a search.

If and when I change anything, I want to ditch the air shocks but would really like it if I could then hook airbags up to the same compressor lines & leveling system. Then it would work the same in theory, but the shocks would be of any other choice.

Just did a quick search, and it does look like others have done it...now just for extra details on the setup...
post #3 of 16 (permalink) Old 01-16-2007, 08:13 PM
caddyguy109
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At this link, look under "Other", and there's at least a small bit of info about doing this very thing.

https://impalassforum.com/cgi-bin/ult...;f=20;t=001275
 
post #4 of 16 (permalink) Old 01-16-2007, 08:36 PM
DBeasst
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Here is the link you want. This is what I want to do to my Roady when I get around to it.

In a nutshell. You replace a spring in the air pump then hook the existing lines to the new air bags and install regular old shocks.

HTH!
post #5 of 16 (permalink) Old 01-16-2007, 09:12 PM
caddyguy109
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Bingo--thanks. I still lug heavy loads around from time to time in the rear, but will never get proper performance with the stock air shocks in back, so this is pretty much the best and cleanest solution.
post #6 of 16 (permalink) Old 01-17-2007, 06:56 PM
dsmerritt
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Thanks for all the help, guys.

So, for my 96 Fleetwood with 9C1 springs, I need to:
1. Get the right length Air Lift air bags for these springs.
2. Install the air bags upside down for air line clearance.
3. Use compression coupling(s) to connect the air bag lines to the factory line(s).
4. Replace spring or remove diaphragm in pump to reduce pressure.

It sounds like removing the diaphragm might be the best solution, but I wonder if there are any downsides to doing this?
David
post #7 of 16 (permalink) Old 01-17-2007, 07:30 PM
caddyguy109
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If you already have them on, how is the Caddy ride and feel (or how has it changed) with the 9C1 springs?
post #8 of 16 (permalink) Old 01-17-2007, 07:43 PM
yellowtaws6
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Quote:
Originally posted by caddyguy109:
If you already have them on, how is the Caddy ride and feel (or how has it changed) with the 9C1 springs?
My brother in law and I just finished installing the 9C1 rear springs in my car (among other things). It is dark, we are tired... I will post a review tomorrow.

To make a long story short, I needed to raise the rear a bit, I could not carry rear passengers or any weight without scraping everything with my Borla tips. Hopefully this does the trick.
post #9 of 16 (permalink) Old 01-17-2007, 08:47 PM
96 Black
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Little plastic spacer things on top and air fittings pointed up for better hose routing & protection from roadkill.

Use a ton o' ducttape to keep everything in place. Inspect/retape every 3 years.

Werd
post #10 of 16 (permalink) Old 01-18-2007, 04:14 PM
yellowtaws6
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Bottom line: Fleetwood rear is heavy. Impala SS springs just don't do the trick (at least for me). Heavy Duty 9C1 springs raise the rear 2 inches and ride much better than the SS springs, especially when paired with the Bilsteins.

I am impressed with the ride now and I don't have to worry about rubbing or bottoming out when I have rear passengers or any weight in the trunk.. Sweet.
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