Arnott Coil Spring conversion

Kevs95

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New guy here. Ordered a rear conversion kit for my ‘95 TC Signature. Problem is the rear sits way to high. Measuring from bottom of wheel to fender is 26 inches. Front is 24 inches. Mechanic said it will “settle”. What do I do?
 

Town

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Welcome to the Forum.

The ride height at the rear is measured between the top of the axle and the underside of the frame as approximately 5" for your 1995 Town Car. So you need to check that dimension first to confirm the apparent 2" height increase at the rear. The rear height sounds right but the front suspension sounds low to me but I have yet to find a spec on that. The service manual says to check for level, but later cars give a method of measuring front ride height. Your front springs may be worn and sagging or broken.

The Arnott website gives two spring kits: C-2614 for your car and C-2615 for the 2003 model and up. The shocks are different between the two kits but the springs have the same dimensions, but unlikely the same spring rates since the 2003 and up are much heavier cars. Do you know the kit number used in your conversion.

Settling of the rear springs is unlikely to drop the rear height by 2". There are several members who have done this conversion (All2kool comes to mind) that will be able to help you with practical suggestions.

Good luck.
 

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Kevs95

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Mine is the C-2614. I’ll try to attach photos.
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All2kool

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Seem I recall installing Moog Coil Springs on my '96 Cartier. Never felt a bit of difference in ride quality and the picture in my signature shows the car after the install.
 

Town

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The back does look high, but the front looks a bit low compared to simmer71's car. Looks like you could measure the rear height between the axle and bottom of frame by going over the rear tire?

Compared to All2kool's car, your rear is a bit higher but not much. Front is about the same. Just an opinion though. Need measurements.
 

Kevs95

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Seem I recall installing Moog Coil Springs on my '96 Cartier. Never felt a bit of difference in ride quality and the picture in my signature shows the car after the install.

I’m working off my phone. Can’t see a picture of your Cartier.
 

Kevs95

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Here is with the air suspension before it went out a month ago. Maybe not the best pic but I can see a difference.
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Kevs95

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If I measured it right, looks to be 6.5ish inches front top of axle to curve in frame.
 

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Kevs95

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How soon after parking was that picture taken? It will make a bit of a difference.

You are absolutely right. The air springs would leak. That was a few hours after washing it. So it obviously lost ride height due to sitting and leaking.
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Kevs95

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Been on the phone with Arnott. Said they have never had complaints and also said it needs to settle... I asked him do springs from a new car on a dealer lot “settle”? He said I could return them if I wanted too. It could also be defective shocks and they were included in this kit.
 

Kevs95

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I sent him pictures as requested. They might be alittle better quality.
 

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All2kool

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It could also be defective shocks and they were included in this kit.

Huh? If you remove the spring, air or coil, the car would drop to the ground almost. The Shock Absorber does not provide any support - they absorb the shock.

When I replaced the RAS on my 1996 Cartier, I did so because the rear end dropped while driving. After I installed the Coil Springs, all was good.
 

Kevs95

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Exactly. I’m no mechanic by any means. I know enough to mess things up. But I knew simple physics how componets should work. I explained the same thing. Not sure what to do at this point.
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Town

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In the pics of post #14 (air ride suspension pics) the fender height measurements do not match the initial coil spring dimensions of fender height. The dimensions are greater than the coil spring dimensions, so I don't understand that?.

In post #8 of Kev's car with air suspension it looks level. When my 2007 was just parked or left overnight it also looked level. In post #11 the ride height measurement looks to be correct at 6.5" (measured from frame rail to top of axle) so higher than air suspension at 5" and post #14 of Kev's car with the metal springs confirms it is riding high. The pic of All2kool's car in his signature also shows the car riding high at the rear but not so much. The base Panther bodied cars such as Crown Vic and Mercury Grand Marquis have metal springs which have a ride height of 5.5" (plus or minus just over a 1/4") so they will ride a bit higher than the air suspension cars but should still look level.

So you are not going to get the air suspension ride height with metal springs, but the present ride height is an inch over spec for metal springs and does not look good. So the options you seem to have are:
1. pay to have the springs and shocks removed and returned to Arnott and pay to have other springs and shocks installed. RockAuto has a selection of springs ( standard rate and variable rate ) for the 1995 Lincoln including a conversion kit to coil springs: 1995 LINCOLN TOWN CAR 4.6L V8 Coil Spring | RockAuto
2. leave your present setup and load your car with all the people you can stuff in the interior and trunk and see if it settles an inch (after everyone exits car).
3, see if Arnott would allow you some time for returning parts if there is no settling within x days/weeks.
4. live with the additional rear suspension height.

Good luck.
 

All2kool

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The pic of All2kool's car in his signature also shows the car riding high at the rear but not so much.

I beg to differ. I suggest everyone here interested in this thread visit the Google Images search of a 1996 Town Car to see an average. FYI - My 1990 Signature still had the RAS - click the link to see the ride height.

One thing I do agree with is that the OP's car does look a bit in the hind end.
 

Babyburr

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I know I’m late to this conversation but here goes. You can replace the air bags with coil springs but you have to leave the air compressor in and on the car, correct? So if compressor craps out, ya have to get a replacement. Is this correct? In other words, ya can’t take the compressor out of your car.
 

Town

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I know I’m late to this conversation but here goes. You can replace the air bags with coil springs but you have to leave the air compressor in and on the car, correct? So if compressor craps out, ya have to get a replacement. Is this correct? In other words, ya can’t take the compressor out of your car.
No, the compressor is not used with coil springs. It is the air suspension module that must remain to control the adaptive steering. It is usually best to leave all the air suspension parts on the car so another owner can get it to work if wanted.
 
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