Question re: Steering Rack Mount Bushings
#1
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Question re: Steering Rack Mount Bushings
When I had my car aligned in February, the technician showed me that the passenger side steering rack mount bushings were starting to perish. In the last couple of months, I've noticed a slight vibration in the steering and thought it was time to replace the bushings. Here are a couple of questions:
Any thoughts and suggestions would be appreciated.
- I assume that I should replace both sides at the same time. As far as I can tell, these are the original rubber bushings.
- Should I use original Porsche bushings or would you recommend another option, such as the delrin bushings?
Any thoughts and suggestions would be appreciated.
#4
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I fully agree on the Delrin. After having these on one car, I removed nearly new OE rubber bushings and replaced them with Delrin on the other car.
Roger Tyson at 928sRus is ready to send you a set!
Roger Tyson at 928sRus is ready to send you a set!
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#8
Hi Bertrand . I recently put solid (metal) ones in. Doing it with the rack in situ is probably "how not to".
Unless you have a hoist. Removing the old ones is a "bit tricky" , as I found out lying on my back. The new ones pop in very easily.
Unless you have a hoist. Removing the old ones is a "bit tricky" , as I found out lying on my back. The new ones pop in very easily.
#9
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I like the Delrin because they don't deteriorate with oil/heat/etc exposure as the original rubber ones do. They can be fit with a slight radial interference in the rack ears without worry about breaking the ears, vs. the aluminum with no forgiveness. The plastic will cold-flow a little as the bolts are tightened, so don't get overzealous with the wrenches when snugging these up; this is about the only reason I'd choose the aluminum over the Delrin. There are no rattles with the Delrin.
The air-chisel makes short work of the outer sleeves on the original bushings. Hand hammer and chisel is a little more work but it's just a one-time job.
The air-chisel makes short work of the outer sleeves on the original bushings. Hand hammer and chisel is a little more work but it's just a one-time job.
#10
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Anyways, installed the Delrin bushings and waiting to get the car back on the road. Altogether, not a difficult job (final busing notwithstanding).
#11
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One set I took out were fairly new. On those, I used a 1/8" bit and drilled out the rubber in a 360 degree area. Still pretty tight, but a bit of flame from a propane torch on the rubber to get the inner metal sleeve out, followed by a hammer/chisel for the outer sleeve with tabs worked well.
PS: I saw the later posting about using a hole saw to remove some of the rubber, so the inner bush can be removed - followed by hammer/chisel for the outer sleeve. I LIKE THAT BETTER!
PS: I saw the later posting about using a hole saw to remove some of the rubber, so the inner bush can be removed - followed by hammer/chisel for the outer sleeve. I LIKE THAT BETTER!
Last edited by Gary Knox; 07-24-2014 at 10:18 AM.
#12
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Also the delrin bushes come in two halves - top hat shape - one half fitted from the top and the other from the bottom. This emulates the factory bushes which are one piece and require peening of the top to locate in the rack without allowing any vertical movement unlike some on the market.
Dang does that make sense!!!
Dang does that make sense!!!
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Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
#13
Don't you like how it always seems one whatever doesn't want to play ball? I kept my old ones for a day to show my sons. At least one bushing was covered in blood.
#15
+1 on the hole saw. Just have a corded drill or more than one battery fully charged.