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Author Topic:   Eibach Springs
SundanceKid
Gearhead

Posts: 1137
From: UT
Registered: Feb 2001

posted 04-07-2002 04:33 AM     Click Here to See the Profile for SundanceKid   Click Here to Email SundanceKid     Edit/Delete Message   Reply w/Quote
I am trying to find variable rate springs for my 65 Mustang. I have found two companies that sell them but they want 165-185.00 for the front two springs. Which to me is rediculous, knowing that the Mustang uses a standard spring size.

So my first question is this; Does anyone happen to know the Eibach part number for a 65 Mustang?
My second question is; can 67-70 coil springs be used on a 65-66 Mustang?
If anyone wants Eibach springs for their 67-73 Mustang Option Auto sells them for 110.00

Thanks for any help.

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Mpcoluv
Gearhead

Posts: 1144
From: Charlotte NC usa
Registered: Apr 2001

posted 04-07-2002 09:27 AM     Click Here to See the Profile for Mpcoluv   Click Here to Email Mpcoluv     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by SundanceKid:
I am trying to find variable rate springs for my 65 Mustang. I have found two companies that sell them but they want 165-185.00 for the front two springs. Which to me is rediculous, knowing that the Mustang uses a standard spring size.

So my first question is this; Does anyone happen to know the Eibach part number for a 65 Mustang?
My second question is; can 67-70 coil springs be used on a 65-66 Mustang?
If anyone wants Eibach springs for their 67-73 Mustang Option Auto sells them for 110.00

Thanks for any help.


Why Eibach specifically?
Yes the 65-70 spring diameter is the same but the 65-66 springs are a different length I think.

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Hemikiller
Gearhead

Posts: 421
From: Clinton, CT
Registered: Feb 2002

posted 04-07-2002 09:51 AM     Click Here to See the Profile for Hemikiller   Click Here to Email Hemikiller     Edit/Delete Message   Reply w/Quote
OK, here's the info on the Moog 8088 65-6 Mustang v-8 front spring:

Coil I.D.: 3.875
Wire Dia.: .590
Load Height: 9.00"
Load weight: 1540
Rate at L/H: 258
Free Height: 14.958

Moog 8304 '67 289:

I.D.: 3.875
Dia.: .610
Load Height: 10.5"
Load lbs: 1587
Rate at L/H: 269
Free Height: 16.145

Basically, the srings will interchange, but you'd have a problem witht he front end sitting 1 1/2" too high (see load height data), they are for the approx the same load, etc, but the 67 and up suspension is different from the early cars. You've got three options here.

1: Buck up, get the Eibachs that fit your car, spend the money, will fit right in.

2: Get the 67-70 Eibachs, save some money, and use a whizz wheel to trim them a 1/2 coil at a time to get your desired ride height.

3: Get a stock spring, costs $60, and will fit and fuction perfectly, the first time, no mods required.

Kinda depends on your level of talent here, do you like fussing around with it to get it just right and feel you've saved a couple $? goto # 2, don't like fussing? goto #1, don't really give a damn? goto #3......

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mellowyellow
Gearhead

Posts: 5919
From: So. Fl.
Registered: Aug 2000

posted 04-07-2002 09:57 AM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
I have an address out of a 1996 MMonthly, Nov, '96. 17817 Gilette Ave., Irvine, Ca 92714, 714-752-6700. Seems mighty strange that 66 would be that much more. Maybe is a demand situation known politely as "el rippo"!

65-66 spring rate 350-450 3560. 120
67-70 spring rate 394-520 3561. 120

They have a brief article on spring install on a 69/7. They give about a 1" drop.

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mellowyellow
Gearhead

Posts: 5919
From: So. Fl.
Registered: Aug 2000

posted 04-07-2002 10:31 AM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
Strange!! Looked in Mustang Unlimited catalog and they only list 67-70, small and big block. WTF!!

Mustangs Plus lists all years 65-73 and they are the same at 159.95 pr. They call theirs another name. Their grades are street and racing. 2 types.

You might also want to check out the deal that adapts 65=6 upper control arm adjustment to the 67 up style. There is a co. that sells this. You may have already checked them out. I recall giving someone info on this.

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SundanceKid
Gearhead

Posts: 1137
From: UT
Registered: Feb 2001

posted 04-08-2002 03:46 AM     Click Here to See the Profile for SundanceKid   Click Here to Email SundanceKid     Edit/Delete Message   Reply w/Quote
Mpcoluv, Eibach is one of the best spring manufacturers in the world. The process they use to make their springs is a quantum leap of technology compaired to the stock springs. What this all sums up to is they will go in and NEVER sag. Eibach as far as I know is the only manufacturer making variabe rate springs for the 65-73 Mustangs.

Hemikiller, Great info! Basicly if the load rate is differant from one to the other it defeats the purpose of the variable rate springs. The vaiable rate springs depend on coil bind to raise the spring/lbs in a non-linear rate. If the load capacity is off buy too much in either direction the coils will either
A. Not coilbind and I will have too soft a ride.
B. Coil bind and I will have too ruff a ride.
So in respects to variable rate springs it has to be right on. If I were to cut the springs I would change the spring rate, and I do not have the formulas for variable rate springs and would not be confortable "guessing".

MellowYellow, thanks for the info I will look into it. Seems strange to me too! The other company with the 65-66 tp 67-on A arm kit is the other company I found they are here localy (30 miles away) so I might be able to get some more info on them.
If I could just get the number off the side of the spring it would be happy days LOL!

Thanks for the help so far.

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mellowyellow
Gearhead

Posts: 5919
From: So. Fl.
Registered: Aug 2000

posted 04-08-2002 06:32 AM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
3560 120 is the number that is mentioned in the ad I saw for 65/66

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SundanceKid
Gearhead

Posts: 1137
From: UT
Registered: Feb 2001

posted 04-08-2002 03:43 PM     Click Here to See the Profile for SundanceKid   Click Here to Email SundanceKid     Edit/Delete Message   Reply w/Quote
Well, this is getting interesting...

EIB-3561 67-70 SB Mustang 110.00
EIB-3562 67-70 BB Mustang 110.00
EIB-3562 71-73 SB Mustang 110.00

So the 3560 number would corespond with the number sequence.

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SundanceKid
Gearhead

Posts: 1137
From: UT
Registered: Feb 2001

posted 04-08-2002 03:53 PM     Click Here to See the Profile for SundanceKid   Click Here to Email SundanceKid     Edit/Delete Message   Reply w/Quote
Found a web site that lists the Eibach Pro kit 3560120 part number. What do you know it is for a 65-66 mustang.

http://www.rs2motorsport.com/prokit.htm

Still not down to the 110.00 price of the other years but were getting there.

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mellowyellow
Gearhead

Posts: 5919
From: So. Fl.
Registered: Aug 2000

posted 04-08-2002 04:22 PM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
Hey Man!! Good detective work! Did you check out some of the other prices?? Whew! They sure have a large product base!

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SundanceKid
Gearhead

Posts: 1137
From: UT
Registered: Feb 2001

posted 04-09-2002 04:01 AM     Click Here to See the Profile for SundanceKid   Click Here to Email SundanceKid     Edit/Delete Message   Reply w/Quote
Ok, contacted an old contact of mine at what is now known as www.Shox.com. He says that Eibach has discontinued the springs and they can't get them any more...? I have yet to get the word strait from the horses mouth yet. I don't have long distance..LOL so It will have to be a while till I can go to my parents house and bum their phone LOL.

But if anyone else is interested the number for Eibachs US customer service is:
(949)752-6788

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SundanceKid
Gearhead

Posts: 1137
From: UT
Registered: Feb 2001

posted 04-09-2002 04:03 AM     Click Here to See the Profile for SundanceKid   Click Here to Email SundanceKid     Edit/Delete Message   Reply w/Quote
I just get sick of certain Mustang part suppliers adding an extra 20% to all of their parts!

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mvierow
Gearhead

Posts: 199
From: Bay Area, Ca
Registered: Apr 2001

posted 04-09-2002 08:13 PM     Click Here to See the Profile for mvierow   Click Here to Email mvierow     Edit/Delete Message   Reply w/Quote
(cough)mustangs plus(/cough). I guess you pay for all the research and fitting they did to provide custom parts like fuel cells and aluminum drive shafts.

[This message has been edited by mvierow (edited 04-09-2002).]

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