Another GB from 914rubber.com - Bet you cant break these. SOLID STAINLESS, Rear trailing arm Bushings and support rod $120 for the set |
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Another GB from 914rubber.com - Bet you cant break these. SOLID STAINLESS, Rear trailing arm Bushings and support rod $120 for the set |
Mikey914 |
Nov 30 2017, 10:59 AM
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#1
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The rubber man Group: Members Posts: 12,657 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
Having the experience of rebuilding Matt's barn find, we noticed that there was rust around the edges of the tubes that went through the control arms. After cleaning these up we noticed that these were constructed from hollow tubes that had a plate with a bolt end welded on. The welds had not been cleaned up well and rust had pitted the them and allowed for water penetration actually allowing the inside of the tube to rust.
We made replacement simple. Machining the new tubes from stainless steel they will never be able to rust and fail. Once we had the center shafts ready we made the bushings from rubber just like factory. These proved difficult to install, so we switched this up to poly-graphite and they we much easier to install. So our "kit" comprises 2 - solid stainless steel pivot shafts, and 4 poly-graphite bushings. I have 2 other GBs I'm about to post - The front strut top rubber replacement The A arm bushings - with or without special tools to install Attached thumbnail(s) |
RoadGlue |
Nov 30 2017, 11:07 AM
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#2
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Sonoma County Gear Head Group: Admin Posts: 2,033 Joined: 8-January 03 From: Santa Rosa, CA Member No.: 108 Region Association: Northern California |
Just curious about how squeaky/creaky the poly-graphite bushings might end up being? Would it be a good idea to notch them out and use a grease fitting to keep the creaking to a minimum?
They look great! |
MikeM |
Nov 30 2017, 11:14 AM
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#3
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Senior Member Group: Members Posts: 564 Joined: 16-May 10 From: Calgary, Canada Member No.: 11,733 Region Association: Canada |
Yes I'd be interested to know about the squeaking and creaking also.
Been there, done that. |
brant |
Nov 30 2017, 11:42 AM
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#4
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914 Wizard Group: Members Posts: 11,622 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
Mark,
another very nice project. and as an FYI: the factory "NUT" that goes onto this stock shaft is a split lock nut that is (last time I checked) NLA I have one or two in the packaging still... perhaps I'm wrong and they are in production now but at the time I bought my "spare" it was NOS the split/lock feature does wear out any chance you are considering making that lock nut also with these wonderful products? brant |
bbrock |
Nov 30 2017, 11:48 AM
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#5
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains |
Can anyone comment on ride and handling characteristics of poly-graphite vs. factory rubber?
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Mikey914 |
Nov 30 2017, 11:57 AM
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#6
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The rubber man Group: Members Posts: 12,657 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
To answer the Question on these bushings.
1- No squeak these are actually a self lubricating bushing and you will note a "oily" residue on them. One of the reasons we went this way was because they are actually easier to install being self lubricating. 2-Durometer is slightly higher than OEM. This is because of the graphite. Matty is currently running these on his car and he's been happy with the ride. |
Mikey914 |
Nov 30 2017, 12:03 PM
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#7
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The rubber man Group: Members Posts: 12,657 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
Mark, another very nice project. and as an FYI: the factory "NUT" that goes onto this stock shaft is a split lock nut that is (last time I checked) NLA I have one or two in the packaging still... perhaps I'm wrong and they are in production now but at the time I bought my "spare" it was NOS the split/lock feature does wear out any chance you are considering making that lock nut also with these wonderful products? brant I have thought about doing these but needed to talk to a hardware expert to determine if there is anything I might be missing here. I have the un-cut nuts (sounds s little wrong) for lack of a better term I can throw in. What I'm not sure is why the factory used these instead of another locking mechanism. There is usually a reason and I do not have much experience with this type of hardware. But, Yes I can make them just want to make them correctly. |
BeatNavy |
Nov 30 2017, 03:44 PM
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#8
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
Mark - I'm in for one of these as well. Is there tool needed to get these on or into the trailing arms? I've got the leftover installation tools from the "E brand" on my last go-round on this. That, without a doubt, was a fair PITA, even with a press.
Again, looks like another good value (IMG:style_emoticons/default/beer.gif) |
amfab |
Nov 30 2017, 03:49 PM
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#9
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Member Group: Members Posts: 393 Joined: 17-May 16 From: Los Angeles Member No.: 20,004 Region Association: None |
Since I am unable to work on my car for the next few months I have to do something—buying a set feels like something. Im in
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burton73 |
Nov 30 2017, 03:57 PM
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#10
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burton73 Group: Members Posts: 3,514 Joined: 2-January 07 From: Los Angeles Member No.: 7,414 Region Association: Southern California |
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yellowporky |
Nov 30 2017, 09:48 PM
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#11
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Member Group: Members Posts: 422 Joined: 18-October 09 From: Martinez, Ca. Member No.: 10,948 Region Association: Northern California |
I will take a set too.
Thanks again for all of the parts |
Montreal914 |
Nov 30 2017, 10:21 PM
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#12
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Senior Member Group: Members Posts: 1,545 Joined: 8-August 10 From: Claremont, CA Member No.: 12,023 Region Association: Southern California |
Hi Mark, nice product! ...as expected (IMG:style_emoticons/default/first.gif)
What would be the difference between your poly-graphite bushings and the ones that Eric Shea sells? Do you need to epoxy them in the trailing arm tube upon installation? How tight do they fit, tooling required? The arms are know to be somewhat out of round, how do you compensate for that? Thank you. |
pete000 |
Nov 30 2017, 10:25 PM
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#13
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Senior Member Group: Members Posts: 1,885 Joined: 23-August 10 From: Bradenton Florida Member No.: 12,094 Region Association: South East States |
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djway |
Nov 30 2017, 11:18 PM
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#14
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Senior Member Group: Members Posts: 787 Joined: 16-October 15 From: Riverside Member No.: 19,266 Region Association: Southern California |
All in (IMG:style_emoticons/default/smile.gif)
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bbrock |
Dec 1 2017, 10:01 AM
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#15
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains |
I'm still trying to decide on these. I want to stay as close to the factory ride and feel as possible since I always thought that was about as perfect as it gets for a street car. When you say the rubber bushings were difficult to install, does that mean impossible, or just that you would need a press? And are rubber bushings off the table based on your experience with them? I think I'm in, but I'm totally clueless about how much harder bushings translate to ride comfort. Hopefully, it is negligible. (IMG:style_emoticons/default/smile.gif)
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Mblizzard |
Dec 1 2017, 10:02 AM
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#16
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
Crap! He got me again. I am in.
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Mikey914 |
Dec 1 2017, 10:53 AM
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#17
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The rubber man Group: Members Posts: 12,657 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
Hi Mark, nice product! ...as expected (IMG:style_emoticons/default/first.gif) What would be the difference between your poly-graphite bushings and the ones that Eric Shea sells? Do you need to epoxy them in the trailing arm tube upon installation? How tight do they fit, tooling required? The arms are know to be somewhat out of round, how do you compensate for that? Thank you. I can't comment on Eric's as I have no 1st hand experience. You should not need to use any epoxy with these. Matt's literally slid in easily. Part of the problem with these is that the alignment of the bushings can bind the rod. These bushings have some lubrication to them and you should be able to insert using a press. A large socket on the bottom with a washer and same set up on top should do the trick. You may be able to duplicate with a large hammer -- carefully. As far as out of round, yes the ones we rebuilt were not perfect, but it really depends on the amount of damage you may have. Mark |
76-914 |
Dec 1 2017, 04:41 PM
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#18
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,495 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
I'm glad to see you doing this Mark. I have done replacements on 2 914's (one was Ravi's) with the OEM rubber and urethane on another 914. After 10,000 miles the Urethane don't squeak as much as they used to. I'll never forget the first time out of the drive with those urethanes. I thought I had snapped a weld joint. Scared the (IMG:style_emoticons/default/stromberg.gif) out of me. As far as the ride goes I can't tell you because the 914 with urethane bushings has a modified suspension and rides stiffly anyways. The one with rubber is 100% stock so a soother ride. I would say that unless you have a press and 5 arms you might want to consider going with plastic vs. rubber and Mark seems to have the better of the 2 plastic bushing presently. In all fairness I should mention that I did not cut the slit or install a zero fitting as suggested by the other company. (IMG:style_emoticons/default/beerchug.gif) Oh, forgot to mention this. The Haynes manual says the rubber ones can't be replaced and they're damned near right about that! (IMG:style_emoticons/default/av-943.gif)
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Mike D. |
Dec 1 2017, 04:47 PM
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#19
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OK, It runs now, and pretty good too! Group: Members Posts: 1,445 Joined: 3-January 03 From: Santa Clarita, Ca Member No.: 85 Region Association: None |
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Mikey914 |
Dec 1 2017, 05:42 PM
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#20
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The rubber man Group: Members Posts: 12,657 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
PMs sent with codes to all.
Thanks, Mark |
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