Jump to content
bhakola

TURBO SPRINGS

21 posts / 886 viewsLast Reply

Recommended Posts

Hi, I am trying to determine if my springs are original. They have a sticker from WallothNesch and appear too nice for 40 year old springs. Does anyone have pics of original springs and/or know what color paint marking should be present? Current markings are (Front) Green/Blue and (Rear) Green/Grey/Green.

 

Car is a 1975, built late 1974

 

image.thumb.png.ace288f6bd44f4e3ee0dace6784599c6.png

 

Thank you

Edited by bhakola

Share this post


Link to post
Share on other sites

My notes are conflicting, so I will have to dig them out to check.

 

Do you want the spring rates?

 

Likewise, if you measure your springs, OD, ID, wire diameter, # of coils, Overall length. Extra credit for the compressed length, I will calculate the rate.

 

Make sure you really clean them to get the paint colors correct, as white may be interpreted as grey.

 

Cheers!

Share this post


Link to post
Share on other sites

Einspritz, I am not looking for the spring rate, trying to determine if my springs are the correct original turbo springs. I want to have the correct srpings with correct markings...

 

I do think one of the colors is white, not gray. Thank you

 

Byron, Thank you... that would be appreciated.

 

Bryan 

Share this post


Link to post
Share on other sites

OK, I checked and the only springs I marked as for the Turbo are the rear springs.

 

They are marked with 1 white paint mark only on each coil.

 

OD= 5"

Wire Diameter = .518"

# of Coils = 7

Overall Length = 12 7/16"

 

My notes have the Turbo front spring as white / blue

 

I have other springs e.g. from a '72 Tii

 

I will keep checking my other references.

 

Ted

Share this post


Link to post
Share on other sites

I thought White, Blue and Red were the three options. Red being the stiffest. Cant recall my source for that info.

Share this post


Link to post
Share on other sites

Thank you Ted and Aaron....

Ted, I believe you are correct the grey is white... I am having the coils measured as they car is not in my possession currently.

Sent from my SM-G965U using Tapatalk

Share this post


Link to post
Share on other sites
(edited)

Someone needs to dig out the c.d. “spring” post, and see if there is anything relevant in there:

 

Based in on the wire thickness and free length, the turbo’s rear springs sound like the heavy duty 2002 springs, targeted at trailer towing — see c.d.’s post.

 

Best regards,

 

Steve

 

Edited by Conserv

Share this post


Link to post
Share on other sites

That post just replicates information from the Factory Manual.

 

The problem is that the figures stated don't make sense, e.g. three different spring codes and rates all have the same length, coil diameter and wire thickness. Add to that the rates published are ranges, not specific.

 

What we need is the number of coils, and I can calculate the true rates in Lb.In. for comparison.

 

I've already started a spreadsheet to do just that, and found that I have some springs that are not listed in the factory manual, unless e.g. Orange is the new Red.

 

Anyone up to counting the number of coils on their springs? Free length? OD? Wire diameter?

 

I'd like to create a Codex to dispel most of these spring myths that all can use for comparison.

  • Like 1

Share this post


Link to post
Share on other sites

Here are the measurements from the springs on my car. I believe the springs have been replaced at some point.

Springs, Front
OD: 125.5mm
ID: 101.5mm
OL: 333mm
#Coil: 7

Rear,
OD: 127.5
ID: 102.0
OL: 314
#Coil: 7

Sent from my SM-G965U using Tapatalk

Share this post


Link to post
Share on other sites

Thanks, but could you say what the paint markings are so I can associate them with the spring rate?

Share this post


Link to post
Share on other sites

Sorry to ask again, but the wire diameter for the fronts work out to 0.979" which works out to 2664 Lb. in.and the rears to 1.04" and 3352 Lb. in.

 

Which seems to be a bit large....no?

 

Thanks!

Share this post


Link to post
Share on other sites
On 12/13/2018 at 8:39 PM, Einspritz said:

Sorry to ask again, but the wire diameter for the fronts work out to 0.979" which works out to 2664 Lb. in.and the rears to 1.04" and 3352 Lb. in.

 

Which seems to be a bit large....no?

 

Thanks!

Hi,

 

Front springs
125.5mm - 101.5 mm = 24 mm / 2 = 12 mm  = 0.4724 inch

Rear springs
127.5 - 102 = 25,5 mm  / 2 = 12,75 mm = 0,50196 inch

 

Am i correct that the front springs allways start with a blue mark?

Share this post


Link to post
Share on other sites

thanks

 

I do not know that about the blue.....

 

can you refresh me on the paint markings for those front and rear?

 

I am assuming that those wire diameters are for the above springs from bhakola?

 

 

Share this post


Link to post
Share on other sites
(edited)
20 hours ago, Einspritz said:

I am assuming that those wire diameters are for the above springs from bhakola?

 

Correct.

 

According to the info I've found on the internet combined with info from BMW I'm quite sure that the front springs are the same as a 'regular' BMW 2002, meaning it should be one of the springs in the list below.

 

31 33 1 112 168 (GREEN)
31 33 1 112 169 (WHITE)
31 33 1 112 170 (RED, Discontinued?)

 

However, the BMW 2002 Turbo has it's own codes for the rear springs.

 

33 53 1 113 585 (GREEN TURBO, Discontinued)

33 53 1 113 586 (WHITE TURBO)

33 53 1 113 587 (RED TURBO, Discontinued)

 

The wire thinkness of the front springs are close to 12mm (0.472 inch) and the rear are close to 13.5mm (0.5315 inch)

 

I think the GREEN/WHITE/GREEN rear springs from bhakola are just 'reinforced' springs instead of the original BMW Turbo springs. It would be nice to know which springs were fitted when the car left the factory.

 

IMG_20190114_191629.jpg

IMG_20190114_191657.jpg

IMG_20190114_191729.jpg

IMG_20190114_191745.jpg

IMG_20190114_191802.jpg

Edited by Tomfish

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.




×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.