vinyl_tien

I replace my 89 s4 Rubber Rack Bushings last year, but after 12 months, it gone bad. I only put 20000KM on it. Is Delrin Rack Bushings will live longer?
Need you guy's input.
Thanks and Happy holiday!

Chuck Schreiber

Absolutely!!

One of the best bang for your buck upgrades you can do!!

Not sure why your rubber bushings would wear out in one year??
Mine were toast and we could virtually push them out w our fingers.

New tighter feel of the delrins was apparent the first time I pulled out onto the street.

Yes, it made that much difference!!

Imo000

Does your oil pan leak?

borland

That's only 12K miles in 12 months. Your problem must be bad tie rods or something else.

blown 87

All of my front end parts were either new, or in very good condition when I changed the bushings out to the derlin units and I honestly could not tell the difference in them.

Seems like I am the only one though.

Imo000

The only one that replaced a good one.

Ducman82

I changed all my front end bushing and the derlin ones..... Love it!

Randy V

Me, too - but most notice a significant improvement.

Get them from Roger at 928sRuS.

dcrasta

Were you able to order the complete set from the same vender ?

GlennD

Expanding this thread a bit ... I see 928 Motorsports are selling solid steering rack mounts.

Benefits of these, as I view, they should never wear out.

Anyone tried them? Positives, negatives when compared to the rubber, the Delrin bushings?

Just getting ready to do mine and am seriously considering the solid ones but would appreciate other's experience on this.

Thanks
Glenn

blown 87

I have done both the solid and delrin mounts, not a bit of difference in them from the drivers point of view.

dr bob

The Delrin are oil-proof, the big advantage over the originals if there are any oil or power-steering fluid leaks on the car. The bushings are a snug fit. The solid bushings risk a little rattling, since they have to be a just-right fit into a cast era and can't be too big.

Roger's bushings are now set up so you put one in the top and one from the bottom in each ear. This sandwiches the rack nicely, and eliminates any need for spacers/washers that the one-side metal bushings (most others) require. I've had other cars with solid suspension parts and they are not so much fun when used as regular drivers. The Delrin is the best all-around solution in my experience.



Results: I'm in the same camp as Greg and Randy. I replaced my originals with Delrin and felt no significant change. No oil contamination of the originals, but I could see the rack move up and down slightly on inspection, so the Delrins went in to keep the rack positively located.

Carl Fausett

When I made our first after-market steering rack mounts, I used Delrin to make them. Within 6 months the Delrin had worn to the point that the rack was loose. The rack was just chewing the delrin up.

So our Delrin steering rack mounts never made it to our website. I replaced them with aluminum solid mounts and have never had a return or problem in the field on them.
However, last year we did re-design our aluminum steering rack mounts to make them easier to install and fit even better.

Just an FYI.

Imo000

I remember reading a thread a few years ago where Porken used a few large washers and some longer bolts to make the "rack solid". I liked the simplicity and wonder how well it help up over time.




The originals are rubber, ofcourse there will be some visible movement.

GlennD

Thanks all for the comments on the bushings.

I believe I will try the solid mounts and see what I get. When spring gets here (and the white stuff disappears), I will be able to report back.

Have a Happy New Year all

Glenn