Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

 
Reply to this topicStart new topic
> Rear Shock Question, Ride height related
balljoint
post Jan 9 2007, 03:26 PM
Post #1


914 Wizard
**********

Group: Members
Posts: 10,000
Joined: 6-April 04
Member No.: 1,897
Region Association: None



Does the condition of the rear shock absorber have an effect on the height of the coil over shock combination?

ie. If the shock has lost it's "shock value" then would that leave the coil spring to do the job on it's own and possibly result in the body weight compressing it further?

Just trying to decide if I should swap out the shocks first and leave the stock springs or if I should wait and pick up some new springs and do them all at once.

(IMG:style_emoticons/default/stan.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Aaron Cox
post Jan 9 2007, 03:30 PM
Post #2


Professional Lawn Dart
***************

Group: Retired Admin
Posts: 24,541
Joined: 1-February 03
From: OC
Member No.: 219
Region Association: Southern California



dead shocks may let the body droop on that side

dead springs will too....
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sww914
post Jan 9 2007, 03:33 PM
Post #3


Advanced Member
****

Group: Members
Posts: 2,439
Joined: 4-June 06
Member No.: 6,146
Region Association: None



A gas charged shock will raise the car a little, I think 1/4" to 1/2".
If the gas is now gone from a gas shock, obviously it will drop again.
The springs in the back of these 30+ year old cars have sagged, and that's usually the cause of the droopy rear ends. The stock springs were 75# springs, a nice, easy inexpensive upgrade is 90# springs or even stiffer if you want to change the front torsion bars also. For the rears it's 4 bolts, no spring compressor needed, and the last set I bought from GPR was $75.00.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
TravisNeff
post Jan 9 2007, 04:21 PM
Post #4


914 Guru
*****

Group: Members
Posts: 5,082
Joined: 20-March 03
From: Mesa, AZ
Member No.: 447
Region Association: Southwest Region



There's a lot that can change the side to side height. Incorrectly set perches (if your shocks have multiple height circlip retainers), gas shocks going bad, springs sagging and then finally the supsension console starting to give. For a quick test you can spend an hour and swap shocks/springs from side to side to see if there is any difference.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
balljoint
post Jan 10 2007, 09:20 AM
Post #5


914 Wizard
**********

Group: Members
Posts: 10,000
Joined: 6-April 04
Member No.: 1,897
Region Association: None



There is a 1" difference in ride height from left to right at the rear.

Any removal or reinstallation of the stock springs from the shock/spring combo will require a spring compressor right?

But since I am certain that the shocks are toast and I have a set of new Koni's then I guess that is my first test.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mueller
post Jan 10 2007, 09:53 AM
Post #6


914 Freak!
***************

Group: Members
Posts: 17,146
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None



QUOTE(balljoint @ Jan 10 2007, 07:20 AM) *

There is a 1" difference in ride height from left to right at the rear.

Any removal or reinstallation of the stock springs from the shock/spring combo will require a spring compressor right?

But since I am certain that the shocks are toast and I have a set of new Koni's then I guess that is my first test.



for the spring compressor, yes and no...depends on the spring, if unsure, get a spring compressor, cheap insurance...some autostores rent them or let you borrow for free...

you could take both shock assemblies out and swap them side to side to see if the ride height changes, should take about 20 minutes
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Instru-Mental
post Jan 10 2007, 10:01 AM
Post #7


Newbie
*

Group: Members
Posts: 14
Joined: 26-December 06
From: Canada
Member No.: 7,386



QUOTE(balljoint @ Jan 10 2007, 10:20 AM) *

There is a 1" difference in ride height from left to right at the rear.

Any removal or reinstallation of the stock springs from the shock/spring combo will require a spring compressor right?

But since I am certain that the shocks are toast and I have a set of new Koni's then I guess that is my first test.


Your local "Crappy Tire" (Canadian Tire for those that don't know...LOL) store has a "loan a tool" program. You can get the spring compressor from them. You leave a deposit for the replacement cost which they refund upon return.

Cheers (IMG:style_emoticons/default/beerchug.gif)

Todd
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sww914
post Jan 10 2007, 11:29 AM
Post #8


Advanced Member
****

Group: Members
Posts: 2,439
Joined: 4-June 06
Member No.: 6,146
Region Association: None



QUOTE(Mueller @ Jan 10 2007, 07:53 AM) *

QUOTE(balljoint @ Jan 10 2007, 07:20 AM) *

There is a 1" difference in ride height from left to right at the rear.

Any removal or reinstallation of the stock springs from the shock/spring combo will require a spring compressor right?

But since I am certain that the shocks are toast and I have a set of new Koni's then I guess that is my first test.



for the spring compressor, yes and no...depends on the spring, if unsure, get a spring compressor, cheap insurance...some autostores rent them or let you borrow for free...

you could take both shock assemblies out and swap them side to side to see if the ride height changes, should take about 20 minutes

Instead of a spring compressor, If needed, (I've not seen it yet) you can put the car on jackstands, put a floor jack under the trailing arm, put a little pressure on the trailing arm with the jack, remove the top nut, and gently lower the trailing arm until the spring is loose. Then remove the lower bolt and pull the whole mess out. Installation is the reverse.
When I worked at a Porsche shop, I could do the lowering springs on the front of a 996 or Boxster in 10 minutes for both sides this way. It paid 1.5 hours book time. I used a lot of grease to hold all of the shims and gaskets and stuff together while I guided the top of the shock back into the spring top. The extra money I made on the front of the car almost made up for the nightmare in the back.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 14th May 2024 - 06:24 PM