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Old 11-15-2006, 08:31 AM
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want to air bag my 51 merc, ideas?

I have chopped and lowered my 51 mercury 4 door. I want to be able to set it right on the ground at shows though. I currently have the stock leaf springs, monster lowering blocks, and shocks, (with a couple leafs removed), and am basically sitting on the rubber stops on the frame rails. How can I get the car lower? I figured air bags but then do I have to go with a 4 link set up and remove the leaf springs?
The front suspension has the lowering kit installed in the lower control arms where it lets the spring down through the lower control arm about 1". I am guessing the I would just eliminate the front coil springs and replace them with bags.
Anyone out there have any good advice or ideas?

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Old 11-15-2006, 08:34 AM
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There are numbers of companies making airbag kits for Mercs. Get a few catalogs, check some of the various magazine articles over the last couple years on installing these setups and make your decision.
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Old 11-15-2006, 12:50 PM
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90% of the time I will recommend to replace the leafs in favor of a four bar when adding airsprings. That way you are not going to be bound up or hindered from the original leafs and you will get the full benefits of air without the steel springs being a factor. The front is a fairly straight forward deal and replace the coil springs with a airspring and bracket assembly.
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Old 11-16-2006, 03:26 PM
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Quote:
Originally Posted by nosliw721
I have chopped and lowered my 51 mercury 4 door. I want to be able to set it right on the ground at shows though. I currently have the stock leaf springs, monster lowering blocks, and shocks, (with a couple leafs removed), and am basically sitting on the rubber stops on the frame rails. How can I get the car lower? I figured air bags but then do I have to go with a 4 link set up and remove the leaf springs?
The front suspension has the lowering kit installed in the lower control arms where it lets the spring down through the lower control arm about 1". I am guessing the I would just eliminate the front coil springs and replace them with bags.
Anyone out there have any good advice or ideas?
In the old days, C notching the frame above the rear axle was common.

The Hirohata Merc in your picture had the rear frame C notched severely for additional axle clearance. Unfortunately the shop notched it excessively without any strengthening and it was dangerous. (read the redo story to see the mechanical mess the car actually was) The redo of the car added additional gusseting to the C notch.

Properly done C notching can gain you about another 3 inches. If you don't mind altering the "floorpan" up into the trunk the C notch can be of any height you need.

Of course the parallel 4-bar is preferred. (not a 4 link)
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Old 11-18-2006, 10:59 AM
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I'm in the process of adding an air system to our 41 Chev. I'm going with a SD notch and bridge setup with a 4 bar set up. My son has the SD notch and bridge on his truck and it works very well at providing axle clearance and reinforcing the frame.
Let me know if I can help.....John
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