I've been recently researching bushing replacement in the forum, this although not specific to the Porsche 928 is interesting.

Also interesting the comments on Ozone.

http://www.roadandtrack.com/car-cult...nl&date=010116

 

Reinforcement for my reminder to potential owners that they budget $5k just for the rubber bits needed to make the cars safe to drive. Mark Anderson suggested in casual conversation a couple years ago that $5k is too low.

William A's '78 resto project with Rob Edwards will end up being a litmus test for what it takes to bring the aging suspension and other rubber bits back from the edge of the grave. If William is willing to share scope and costs; some things he may not want to tally.


Meanwhile, many of us drive our cars casually while the suspension bits slowly deteriorate. The gradual degradation goes unnoticed in normal driving. At some point you might start to notice more suspension noises, but those are often buried by the exhaust sounds from RMB's, X-pipes and cat-deletes. We like the look of the sagged suspension, makes the car look more business-like. But tires wear funny, and it's hard to keep it aligned correctly with all the extra movement. We take it for alignment, but forbid the tech to lift the car to check for wear and extra play in the moving parts under there.


928 International offers the suspension arms remanufactured by the companies that originally made the parts, all fitted with fresh new rubber pieces. Add new lower balljoints and tie rods/ends, rebuild the dogbones and new swaybar bushings. New shocks if yours aren't recent, adjust the ride height back close to where it is supposed to be. It will be a totally different car, trust me.

 

Interesting piece.

But the Corvette Grand Sport referenced was a 1996, not 95. But who checks for accuracy

 

Front upper and lower control rebuilds from 928Intl are $295 each, so that's $1200 for the front. No core charge for William since we wanted the original arms back but there was an additional shipping cost.

Rear upper control arm bushing 92833108904 is $42 x 4, Lower Rear Arm Bushing*92833158810 is $50 x 2, and Lower Rear Arm Bushing 92833158815 is $96 x 4, so 168+100+384 = $650. The 'rocker bar' bushings at the front of the rear lower control arms are NLA.

So figure $2K for a complete suspension bushing re-do, if you can get a shop to R&R the rears for $150ish.

To DIY, the VW tools to properly R&R the rear bushings are still available. You need:

VW224B, VW407, VW408A, VW415A, VW441, VW455, and VW459.

I'm sure that one could replicate most/all of the VW tools if you had a set to copy. But the real deal are way more satisfying.