Notices
928 Forum
Sponsored by:
Sponsored by: 928 Specialists

928SE front springs

 
Old 07-19-2017, 05:07 PM
  #1  
pht9
User
Thread Starter
 
Join Date: Jul 2008
Location: Chester
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default 928SE front springs

We discussed this matter a few months ago, but it was never concluded. I cleaned up the dampers on the front of my SE and here are the pictures

I would say the 3 x paint markings are more Orange than Brown. I guess the wire diameter will also help if a few of us measure, mine are 14.7mm

There is also another number stamped at the top, with the Porsche P symbol - has anyone seen these numbers before ?







Last edited by pht9; 07-22-2017 at 11:17 AM.
pht9 is offline  
Old 07-19-2017, 07:31 PM
  #2  
soontobered84
Addict
Rennlist Member
 
soontobered84's Avatar
 
Join Date: Mar 2002
Location: Texas
Posts: 5,031
Received 4 Likes on 4 Posts
Default

looks orange to me
soontobered84 is offline  
Old 07-19-2017, 07:49 PM
  #3  
ROG100
Addict
Rennlist Member


Rennlist
Site Sponsor

 
ROG100's Avatar
 
Join Date: Jan 2003
Location: Double Oak, TX
Posts: 15,721
Likes: 0
Received 2 Likes on 2 Posts
Default

They certainly look like SE springs to me.
I agree definitely orange.
__________________


Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014

928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
ROG100 is offline  
Old 07-20-2017, 05:20 PM
  #4  
Michael Benno
Addict
Rennlist Member
 
Michael Benno's Avatar
 
Join Date: Mar 2015
Location: Portland, OR
Posts: 960
Likes: 0
Received 1 Like on 1 Post
Default

Hey Roger, I have my springs out of my 88 S4 with sport suspension package (M474 option code). Remember the same three orange/brown paint marks. I'll grab a photo and coil diameter so you can compare.

Also, I noticed the height adjuster on yours looks a little different than the one from my car




Michael Benno is offline  
Old 07-20-2017, 05:29 PM
  #5  
ROG100
Addict
Rennlist Member


Rennlist
Site Sponsor

 
ROG100's Avatar
 
Join Date: Jan 2003
Location: Double Oak, TX
Posts: 15,721
Likes: 0
Received 2 Likes on 2 Posts
Default

Hi Michael,
M474 was the Boge red shocks only with no changes to the springs.
M637 springs were only factory fitted to the front of CS/SE cars. Rear springs were the same as all other 928's 87 to 95.
All other 928's 87 to 95 were fitted with the same springs.
Roger
__________________


Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014

928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
ROG100 is offline  
Old 07-20-2017, 05:41 PM
  #6  
Rob Edwards
Archive Gatekeeper
Rennlist Member
 
Rob Edwards's Avatar
 
Join Date: Sep 2002
Location: Irvine, CA
Posts: 13,728
Likes: 0
Received 11 Likes on 5 Posts
Default

One more non-Pantone-calibrated image of orange dabs on Clubsport springs:

Rob Edwards is offline  
Old 07-20-2017, 05:49 PM
  #7  
Michael Benno
Addict
Rennlist Member
 
Michael Benno's Avatar
 
Join Date: Mar 2015
Location: Portland, OR
Posts: 960
Likes: 0
Received 1 Like on 1 Post
Default

Yeah, I saw a thread explaining the M637 option. My 1988 S4 5spd does not list the M637 code, as it is not an CE/CS. I will get you a good quality photo of the paint marks so we can all compare "orange" vs "brown" as well as the spring coil diameter and unsprung height so we can unlock the actual differences between the two springs. I'd be curious to know are the CS/CE springs shorter, stiffer, etc.

Are you planning on cleaning up the rust and refinishing the paint on those springs? I am curious since I have some paint chips on my springs and wonder if that needs to be fixed before installation.
Michael Benno is offline  
Old 07-20-2017, 05:54 PM
  #8  
ROG100
Addict
Rennlist Member


Rennlist
Site Sponsor

 
ROG100's Avatar
 
Join Date: Jan 2003
Location: Double Oak, TX
Posts: 15,721
Likes: 0
Received 2 Likes on 2 Posts
Default

The CS/SE front springs were stiffer but I am willing to be corrected by Mr. Edwards 8>)
__________________


Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014

928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
ROG100 is offline  
Old 07-21-2017, 02:06 AM
  #9  
Michael Benno
Addict
Rennlist Member
 
Michael Benno's Avatar
 
Join Date: Mar 2015
Location: Portland, OR
Posts: 960
Likes: 0
Received 1 Like on 1 Post
Default

Here are the specs on my "Brown" springs.

The diameter of the coil is 14.55mm. The smaller diameter over the SE/CS springs with orange paint confirm they would be stiffer.

Here is a shot of the paint on my 88 S4




There is a number stamped in the coil as well

Michael Benno is offline  
Old 07-21-2017, 03:18 PM
  #10  
pht9
User
Thread Starter
 
Join Date: Jul 2008
Location: Chester
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default

Michael, Thats great information that you posted there, and shows the Brown markings are indeed Brown, and the 'Orange' markings are an Orangey Brown

The wire diameter is useful too

I guess if we could establish at ride height how many of the coils do not touch, we could calculate the spring rate differences too

When my car is back on the floor (I'm doing a rear suspension refresh currently) I'll see if I can get a mirror in there to see....
pht9 is offline  
Old 07-21-2017, 03:22 PM
  #11  
pht9
User
Thread Starter
 
Join Date: Jul 2008
Location: Chester
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default

Rob, Can you check if your NOS spings have the white lettering AHH 928409 at the top ?

......and if you are selling that set - I'd like to buy
pht9 is offline  
Old 07-21-2017, 08:19 PM
  #12  
Rob Edwards
Archive Gatekeeper
Rennlist Member
 
Rob Edwards's Avatar
 
Join Date: Sep 2002
Location: Irvine, CA
Posts: 13,728
Likes: 0
Received 11 Likes on 5 Posts
Default

That pic of the springs in the bag is 7 years old, they're currently holding up the front of my GTS.

They don't have the AAH number on them, but they do have a manufacture date on them, and interestingly enough an Eibach stamp. Which begs the question of A) can Eibach tell us the spring rate without having to kill us, and B) can anyone sweet-talk them into winding more sets (?)



9 lbs 4 oz:

Rob Edwards is offline  
Old 07-22-2017, 11:16 AM
  #13  
pht9
User
Thread Starter
 
Join Date: Jul 2008
Location: Chester
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Rob Edwards View Post
One more non-Pantone-calibrated image of orange dabs on Clubsport springs:

looking at the date stamp, maybe a later run produced by Eibach for Porsche ?

Usually OE parts made for Porsche have the P symbol (in a triangle), like on my springs between the letters
pht9 is offline  
Old 07-22-2017, 04:38 PM
  #14  
dr bob
Chronic Tool Dropper
Lifetime Rennlist
Member
 
dr bob's Avatar
 
Join Date: Oct 2001
Location: Bend, Oregon
Posts: 18,015
Received 13 Likes on 12 Posts
Default

Criticals for determining spring rate are wire diameter, coil diameter, spring length, number of coils, and coil spacing.

The Eibach guys in SoCal have a spiffy spring and shock "dyno" that helps you find some interesting dynamic info.

If you have a set of car scales (like for corner balancing), you can put one in a press under the bottom of the spring. Then with a tape measure you can build a chart that shows actual spring pressures (and then calculate rates) at different compressed lengths. Put A Safety Cable Through The Spring if you decide to try this.
dr bob is offline  
Old 07-23-2017, 04:54 AM
  #15  
928cs
Super User
 
928cs's Avatar
 
Join Date: Aug 2003
Location: Le Mans, France
Posts: 2,444
Received 3 Likes on 3 Posts
Default

Thank you for the pictures and information

Here is a regular M474 spring, with three brown markings.



Now, I will need to check this on my new CS, also.
928cs is offline  

Thread Tools
Search this Thread
Quick Reply: 928SE front springs


Contact Us - About Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: