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Replacing coils w/ struts; All 4 or none? #4684783
03/05/18 04:06 AM
03/05/18 04:06 AM
Joined: Sep 2013
Posts: 10,679
Indiana
dlundblad Offline OP
dlundblad  Offline OP
Joined: Sep 2013
Posts: 10,679
Indiana
The Volvo in my signature is due for some fresh suspension. Thinking either Sachs or Bilstein Tourings.

I can get "loaded" Sachs with the coil ready to install or I can get just the strut itself and swap everything over.

Question being, would I run into any issues replacing just the front coils, but not the rear?


03 Jeep WJ 4.0 202k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)

Re: Replacing coils w/ struts; All 4 or none? [Re: dlundblad] #4684803
03/05/18 05:49 AM
03/05/18 05:49 AM
Joined: Oct 2009
Posts: 388
California
Billbert Offline
Billbert  Offline
Joined: Oct 2009
Posts: 388
California
you are likely to have an increased ride height in the front of your car, it will throw off the headlight adjustment and you will get a bit of the (lowrider look) without the car being low. Best to replace all 4 springs.


If you think you can, or if you think you can't, You are probably right.

Auto Instructor / ASE Master Tech
Re: Replacing coils w/ struts; All 4 or none? [Re: Billbert] #4684829
03/05/18 06:37 AM
03/05/18 06:37 AM
Joined: Nov 2006
Posts: 20,569
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,569
MA, Mittelfranken.de
+1 The springs are 16 years old and definitely sagging, you don't notice it as they are all sagging at the same rate.
You could do the fronts with the coils as a unit and buy the springs extra for the rears if they don't sell an assembly. Look at Lesj÷fors Springs if Sachs doesn't make them.
Make sure to get any dot colors of the old coils if there are any Lesj÷fors make to exact OE.


ASE L1, Master. Deutsch Meisterbrief.
Re: Replacing coils w/ struts; All 4 or none? [Re: dlundblad] #4684957
03/05/18 09:12 AM
03/05/18 09:12 AM
Joined: Jan 2017
Posts: 1,978
VW Fanboy Island
maxdustington Offline
maxdustington  Offline
Joined: Jan 2017
Posts: 1,978
VW Fanboy Island
You should do all four, it would be weird to have the front stiff and the rear bouncy.


03 Jetta AWP/09A 205k kms
Edge 0W40 + Mann 719/30
Re: Replacing coils w/ struts; All 4 or none? [Re: dlundblad] #4685119
03/05/18 11:51 AM
03/05/18 11:51 AM
Joined: Aug 2003
Posts: 1,060
Vancouver, Canada
jaj Offline
jaj  Offline
Joined: Aug 2003
Posts: 1,060
Vancouver, Canada
If it were I, because it sounds like you don't need springs, I wouldn't replace them. However, if you're doing the work yourself and you like the convenience of the full corner module for the front, then do the fronts first and see how if ride height changes. If the front end rides higher, then replace the rear springs when you do the rear end, but if the car's still level, then just replace the rear shocks.

Re: Replacing coils w/ struts; All 4 or none? [Re: jaj] #4685139
03/05/18 12:12 PM
03/05/18 12:12 PM
Joined: Jan 2017
Posts: 1,978
VW Fanboy Island
maxdustington Offline
maxdustington  Offline
Joined: Jan 2017
Posts: 1,978
VW Fanboy Island
Originally Posted By: jaj
If it were I, because it sounds like you don't need springs, I wouldn't replace them. However, if you're doing the work yourself and you like the convenience of the full corner module for the front, then do the fronts first and see how if ride height changes. If the front end rides higher, then replace the rear springs when you do the rear end, but if the car's still level, then just replace the rear shocks.


A few summers ago I had a 2000 Golf that I put new struts and rebuilt the front suspension. I put that entire suspension on a 2003 Jetta a year later but replaced the springs with low mileage used neuspeed sport springs that I got off of kijiji. The springs made more of a difference in the way the car felt more than any of the other stuff, and the springs were like 1/3 the cost of the other components (bilstein touring stuts and an IDparts front end kit). I know that I replaced worn sport springs with new, stiffer sport springs but the car did not crash over bumps and actually absorbed some of the impacts. The car had about 195k km on it on completely stock suspension down to the tie rod ends IIRC.

I've seen people say that springs never need to be replaced, but they made my car feel brand new. I know factory springs are expensive, but you can always get good quality aftermarket springs for cheaper. I am not sure that you could get a stiffer spring in a stock ride height though.


03 Jetta AWP/09A 205k kms
Edge 0W40 + Mann 719/30
Re: Replacing coils w/ struts; All 4 or none? [Re: Trav] #4685422
03/05/18 05:22 PM
03/05/18 05:22 PM
Joined: Mar 2008
Posts: 7,319
USA
slacktide_bitog Offline
slacktide_bitog  Offline
Joined: Mar 2008
Posts: 7,319
USA
Originally Posted By: Trav
+1 The springs are 16 years old and definitely sagging, you don't notice it as they are all sagging at the same rate.
You could do the fronts with the coils as a unit and buy the springs extra for the rears if they don't sell an assembly. Look at Lesj÷fors Springs if Sachs doesn't make them.
Make sure to get any dot colors of the old coils if there are any Lesj÷fors make to exact OE.


approved

Get the Sachs quick struts and then buy the rear springs too thumbsup

Re: Replacing coils w/ struts; All 4 or none? [Re: dlundblad] #4689785
03/09/18 04:36 PM
03/09/18 04:36 PM
Joined: Sep 2013
Posts: 10,679
Indiana
dlundblad Offline OP
dlundblad  Offline OP
Joined: Sep 2013
Posts: 10,679
Indiana
Confession:

I ended up just buying the quickies for the front and shocks for the rear; no rear coils.

Between the replacement control arm/ ball joint and 4 corners of suspension, I'm at $900. I'll take some measurements and if it looks to be needed, I'll get some Lesjofors rears for $70 each. At the moment, the rear looks to be higher than the front so we shall see. shrug

They were supposed to be in today, but they look to be held up on the east coast from weather.

Last edited by dlundblad; 03/09/18 04:41 PM.

03 Jeep WJ 4.0 202k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)


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