Eaton Detroit Spring – ride height issue - Ford Muscle Forums : Ford Muscle Cars Tech Forum
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post #1 of 21 (permalink) Old 02-07-2017, 10:38 PM Thread Starter
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Eaton Detroit Spring – ride height issue

I know this subject has been brought up many times, but I haven’t found a satisfactory answer so hopefully this time… has anyone installed stock, 1” or 2” lower springs from Eaton? Can you share some measurements?
I have a 64 Galaxie convertible; rear springs were original with broken leaves and flipped shackles. The front springs are not original, but no idea what was installed. After reading what I could find on this forum, I decided to get 2” lower coil and leaf springs with the Viking shocks. Currently the tires are 25” diameter on 17” rims; hope to go with 26” tires in the future. Other relevant specs: 390 4v (cast iron intake), cruise-o-matic, no A/C, PS, PB.
So the problem is with the 2” lower coils, the engine cross member is 3.5” from the ground. My expectation the with 2” lower springs was more like 5” to the cross member. I think I got the wrong set of front coils.
The old coils are 16.5” tall. I didn’t measure the Eaton coils, but have a pic. Also the wire diameter seems to be the same on both springs roughly 0.71875 or 23/32. (All I have is a manual caliper)

springs: https://1drv.ms/i/s!Au7sEgY_hDh7l0VHE3KtRV4vEmxD

measurement: https://1drv.ms/i/s!Au7sEgY_hDh7l0ZxswXCWdH07anj

The car looks great but too low in the front, tire rubs in turns:
https://1drv.ms/i/s!Au7sEgY_hDh7l0Qa1opYKyfGyl-b

This is why I went with the 2” lower springs:
https://1drv.ms/i/s!Au7sEgY_hDh7l0cye2IIDdDaBpD1

Some links I used to decide to go with the 2” lower sprints
http://www.fordmuscleforums.com/gala...axie-what.html
http://www.fordmuscleforums.com/gala...-2-drop-2.html
http://www.fordmuscleforums.com/gala...l-springs.html

Eaton believes that they sent the correct springs, but has offered to replace the coils with another set of 2” lower springs. I’m hoping you guys can help properly set my expectations.

Thanks
David
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post #2 of 21 (permalink) Old 02-08-2017, 12:11 PM Thread Starter
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Re: Eaton Detroit Spring – ride height issue



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David
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post #3 of 21 (permalink) Old 02-09-2017, 04:03 AM
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Re: Eaton Detroit Spring – ride height issue

You need to start with a known value and the same one Eaton used—stock ride height. Look in your Ford Service Manual for the measurement, including the stock tire diameter spec. I think your tires are about 1.5 to 2" smaller than stock and will obviously lower the car further—but check. Be sure to use the method to measure that is specified in the manual, which is usually directly over the hub. Once you know those dimensions, you can compare with what you have, and what Eaton expects for those springs.

David

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post #4 of 21 (permalink) Old 02-09-2017, 07:43 AM
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Re: Eaton Detroit Spring – ride height issue

What is the width on your front tires. I had 245/45/18 and had rub issues. went to 225/45/18 no rub issues now
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post #5 of 21 (permalink) Old 02-09-2017, 03:53 PM
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Re: Eaton Detroit Spring – ride height issue

WOW!! Don't change a thing!! That is the way these cars are supposed to look. JMO I can't help you cuz I'm going with Air Ride but that is the stance I'm going with at ride height. I have to keep going back and looking at it, I think you should drive it some and see how it does, might grow on you.


zell90r94, Love your car and stance also.
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post #6 of 21 (permalink) Old 02-09-2017, 05:58 PM Thread Starter
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Re: Eaton Detroit Spring – ride height issue

I love it to, but i live in a city full of potholes...

Thanks
David
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post #7 of 21 (permalink) Old 02-09-2017, 06:12 PM Thread Starter
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Re: Eaton Detroit Spring – ride height issue

Thanks zell90r94, Currently Front: 205/50R17 Rear:245/45R17 (25" dia tires) , but planning on going with Front: 215/55R17, Rear: 235/55R17 (26.3" & 27.2" dia respectively). From what i can tell from your car (stunning BTW) , even with 18" rims, your rim seem to be right at the wheel arch. Mine is tucked in almost an inch. If i had 27" diameter tires, the measurement from the ground with the wheel arch would still be 21 1/2" inches. and this takes me back to the question, was the stock ride height 23-24 inches? i think with the narrower tire, i may not rub, but still looking to get the front a little higher, roughly 1 1/2 inches.
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David

Last edited by Ddepascal; 02-09-2017 at 06:23 PM.
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post #8 of 21 (permalink) Old 02-09-2017, 06:14 PM
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Re: Eaton Detroit Spring – ride height issue

It looks great!
If you raise it in the front, you'll need to do so in the back to maintain the look.
If you can find a way to make it work at current height, that is perfect.

1964 Galaxie 500 351C 4 speed
1971 Pontiac Trans Am 455 HO
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post #9 of 21 (permalink) Old 02-09-2017, 06:21 PM Thread Starter
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Re: Eaton Detroit Spring – ride height issue

Thanks PSIG, have the 1964 Ford and Mercury Shop manual and a 1964 Ford Service booklet and neither give a ride height dimension. When I called Eaton, knowing my rear springs were shot and no idea whats up front, I asked if they could tell me what stock ride height was and they couldn't.
"Good question on the ride height. Unfortunately it's not one I can answer
for you. I don't have any ride height specs for your 1964 Galaxie. Do you
have an old service manual? Sometimes they have the specs."


we discussed after market a/c, alum intake, engine size and trans type. seems like i had all the bases covered.

Thanks
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post #10 of 21 (permalink) Old 02-09-2017, 11:10 PM
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One thing to think about is.... Eaton has been doing this awhile and they sold you 2" lowering springs. Now no one is perfect but I would think as long as they have been doing it is probably pretty close. I would try a little more tire for sure, it will also improve your ride quality.

No matter how many times I look at it, it still looks good.
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post #11 of 21 (permalink) Old 02-10-2017, 01:55 AM
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Re: Eaton Detroit Spring – ride height issue

Quote:
Originally Posted by Ddepascal View Post
Thanks PSIG, have the 1964 Ford and Mercury Shop manual and a 1964 Ford Service booklet and neither give a ride height dimension.
They always give ride height. Note that some models do not measure the wheel arch, but rather two points in the suspension. It's usually in the alignment specs section, though I have also seen them in the chassis section for collision damage repair. If the dimension is between two suspension parts, you can use a jack to raise the car until the spec is correct, then measure your wheel arch for a more convenient reference. I have the specs in all the manuals I have here, but that doesn't include the 1964, or I would happily give it to you.

David

PS: One of the members here visited Eaton some years ago, and said they have a wall of factory blueprint storage and manuals for specs in a blueprint room. They know it all. But, I imagine after a few thousand people asking them to look stuff up for them like a free library reference, they eventually "do not have that information available".
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post #12 of 21 (permalink) Old 02-10-2017, 03:37 AM
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Re: Eaton Detroit Spring – ride height issue

What is the backspace on the front rims. My front rims are 18x8 with 4.5 BS. Rear 20x8/4.5BS with 255/45/20 . I would have to go back though my receipts as I have done a ton of stuff during my restoration but I'm pretty sure I bought the 3" drop for the front and 2" drop for the rear. I had to send the leafs back to have them de-arched because I didn't like the stance. Are you rubbing the frame or the fender lip when you turn?

BTW my Gal says "Thanks" for calling her a stunner.....
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post #13 of 21 (permalink) Old 02-10-2017, 09:39 PM Thread Starter
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Re: Eaton Detroit Spring – ride height issue

Quote:
Originally Posted by zell90r94 View Post
What is the backspace on the front rims. My front rims are 18x8 with 4.5 BS. Rear 20x8/4.5BS with 255/45/20 . I would have to go back though my receipts as I have done a ton of stuff during my restoration but I'm pretty sure I bought the 3" drop for the front and 2" drop for the rear. I had to send the leafs back to have them de-arched because I didn't like the stance. Are you rubbing the frame or the fender lip when you turn?

BTW my Gal says "Thanks" for calling her a stunner.....
I don't know the backspace, the car came with the rims, but I'm willing to bet they're 4.5". I will measure when I drop the springs Sunday. The rub is in the fender lip.

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Last edited by Ddepascal; 02-11-2017 at 08:11 AM. Reason: typo
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post #14 of 21 (permalink) Old 02-12-2017, 02:46 PM Thread Starter
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Re: Eaton Detroit Spring – ride height issue

I found another forum post from @2StrokeSmoke ;about the -2" coil springs being lower than expected:
http://www.fordmuscleforums.com/gala...ml#post1934625

Also, attached is a pic of the drivers side lower control arm rubber stop nearly contacting the frame with the weight of the car. Is this an expected outcome going 2" lower than stock?

I read in this post http://www.fordmuscleforums.com/gala...ls-2-drop.html that after a 4" drop, there was still an inch of space before the stops touch.
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Last edited by Ddepascal; 02-13-2017 at 07:15 PM. Reason: spelling
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post #15 of 21 (permalink) Old 02-12-2017, 03:00 PM Thread Starter
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Re: Eaton Detroit Spring – ride height issue

The measured backspace is on the front 17x7 Torque Thrust rim is 4".

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