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Old 05/02/2021, 01:31 PM   #1
1968Cally
 
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Coil Spring R&R

On my '68, I am going to remove my front coil springs in order to cut them down a little to lower the front end height. P.O put them in four years ago now and have about 1,500 miles on them so I think they are settled. No, I am not going to do the Arning drop as the car is stock.

1) Do you guys remove the shock tower covers? Seems like keeping the shock tower covers on could provide a measure of safety if something bad happens. If you do keep them on, do you need to remove the the upper arm from the shock tower?
2) While I am at it, I am going to put in open tracker roller spring perches. Seeing as they will be off, does that change any answers to the above? I did read on another forum that the roller perches are a waste of money if not doing the Arning drop. Thoughts?
3) All the internal spring compressors I have seen have two legs at each end to grab the coil. Sure seems that three legs would be safer. Do they exist?
4) Does it make any sense to remove the shocks with the car (and tires) on the ground, then install the compressor (will the legs fit through the semi collapsed coils?). Then raise the car, remove the tires and go from there?
5) Any other tips or tricks?

Thanks.

Dave
'68 GTCS
8R01J140036 2/8/1968
C4/PS/PB/AC
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Old 05/02/2021, 02:41 PM   #2
CougarCJ
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I like and have only used the internal coil spring comressors. Youtube the procedure for which ever style of compressor you use. Removing upper arms is not necessary.

Scott Behncke
1968 GT/CS 302-4V Honors flysis incone beezis onchest nobis inob keesis
West Coast Classic Cougar A good source for Mustang mechanical parts too.
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Old 05/02/2021, 09:56 PM   #3
franklinair
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I prefer running stock suspension configuration. Cutting or torching coil springs gives me severe heartburn.
I've found stock ride height (27" from the ground to the apex of the fender opening) satisfying. Check yours and see what the height is (front & rear fenders).

Neil
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Old 05/03/2021, 04:24 AM   #4
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If you want it lower you might want to consider using a lowering coil springs. I thing you would find it a better solution than cutting off coils on the ones you have.

Follow HCS restoration at http://68hcs.weebly.com
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Old 05/03/2021, 05:55 AM   #5
1968Cally
 
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Quote:
Originally Posted by Ruppstang View Post
If you want it lower you might want to consider using a lowering coil springs. I thing you would find it a better solution than cutting off coils on the ones you have.
I would agree. However the springs in there now are a known quantity. If I got lower springs, they might be too low for my liking. So then I have to get less low ones and try again. If they are not low enough, then get lower ones or cut the new ones that are not low enough.

I know if I cut a 1/2 inch off the current ones, then the car will sit one inch lower in the front. On the Eaton spring website, there is a video showing cutting down springs and it is fine with them. I really want this to be once and done as I hate playing with the front coils. Makes me nervous!

Dave
'68 GTCS
8R01J140036 2/8/1968
C4/PS/PB/AC
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Old 05/03/2021, 06:22 AM   #6
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I always remove the shock tower covers. Youíre right about using the weight of the car to help out. Once the compressor is in place you can jack up the lower A-arm to compress the spring. That makes wrenching on the compressor much easier.

This getting older ain't for cowards. - John Mellencamp
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Old 05/03/2021, 06:24 AM   #7
1968Cally
 
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Quote:
Originally Posted by franklinair View Post
I prefer running stock suspension configuration. Cutting or torching coil springs gives me severe heartburn.
I've found stock ride height (27" from the ground to the apex of the fender opening) satisfying. Check yours and see what the height is (front & rear fenders).

Neil
Below are the stock ride height specs. As you can see, the spec for the rear is 1.4" lower than the front. Currently, the car is at 26.6" front and 25.1" rear. So, 1.5" higher than the rear. Originally, the cars were not "level" appearing as the rear was lower. Yours would seem to be "level" if all four are at 27" I have struggled with raising the rear or lowering the front. I decided on the front as there is more space between the top of the tire and the apex of the fender than the rear.

Here are the Ford specs for ride height.
Ride heights are measured from the ground to the highest most point of the wheel well opening (which should be though the center of the wheel).
For Mustang with standard suspension:
Front - 26.68 tolerance +1.00 and -0.70
Rear - 25.39 tolerance +1.00 and -0.75
For Mustang with GT and Special Handling Package:
Front - 26.49 tolerance +1.00 and -0.70
Rear - 25.49 tolerance +1.00 and -0.75
All dimensions are for Mustang with:
Full tank of fuel
All engine fluids at full
Spare tire with wheel in design position
Front seat at rearmost position
Jack and components in design position
Tires inflated to 24-psi front and rear (for ride height evaluations only)
6.95-14 tires

Adjustments for other tires:
E70-14 subtract 0.10
7.35 x 14 add 0.20
F70-14 add 0.30
FR70-14 same as 6.95-14

All dimensions in inches

Dave
'68 GTCS
8R01J140036 2/8/1968
C4/PS/PB/AC
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Old 05/03/2021, 07:15 AM   #8
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I did the 1 inch drop front coils and a mid-eye leaf springs in the rear and my car sits pretty even.



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Old 05/03/2021, 09:37 AM   #9
1968Cally
 
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Quote:
Originally Posted by cmacias24 View Post
I did the 1 inch drop front coils and a mid-eye leaf springs in the rear and my car sits pretty even.



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Yes, it does look good. When you say the the one inch drop, you are referring to just the coils and not the one inch Arning Drop. Correct?

Dave
'68 GTCS
8R01J140036 2/8/1968
C4/PS/PB/AC
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Old 05/03/2021, 09:38 AM   #10
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Just the coils. Mustangsplus use to sell a grab-a-track setup that had a 60/20 coil. Thatís what I used, but I heard that theyíre no longer in business.


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Old 05/03/2021, 10:45 AM   #11
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I try to run 26Ē all around, or maybe a touch higher in the rear.

This getting older ain't for cowards. - John Mellencamp
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Old 05/03/2021, 03:14 PM   #12
1968Cally
 
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Quote:
Originally Posted by Mosesatm View Post
I try to run 26Ē all around, or maybe a touch higher in the rear.
That would seem to be what I would like to wind up at.

Dave
'68 GTCS
8R01J140036 2/8/1968
C4/PS/PB/AC
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Old 05/08/2021, 03:42 AM   #13
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I put a 1 inch drop coil springs in my current car as well. Iím satisfied with it.


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Old 05/08/2021, 07:14 AM   #14
1968Cally
 
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Quote:
Originally Posted by whodat View Post
I put a 1 inch drop coil springs in my current car as well. Iím satisfied with it.


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Do you have the brand and specs of the springs handy?

Dave
'68 GTCS
8R01J140036 2/8/1968
C4/PS/PB/AC
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