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| Control arm fitting (Page 1/1) |
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AchillesWraith
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FEB 20, 07:41 PM
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We installed poly bushing in the front controls arms. When we were trying to install the lower control arms on the car, we would have a problem of the control arms not fitting because of the poly bushings. It’s and 86 GT and would like any advice on what we can do.
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Spoon
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FEB 20, 08:09 PM
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Could be the wrong parts for lower control arm. Check part #. Go to another source. Take old part along to parts store, etc.
Spoon
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"Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut
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Raydar
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FEB 20, 08:19 PM
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That's not the first time I've heard this. Seems like the favored solution was to slather silicone grease all over the ends of the bushing, and jam the arms into the brackets.
Please don't take my word for it, though. I'm sure some others may chime in. (I've done poly on three different 88s, and all of them were tight, but not unmanageable. OTOH, I've never done an earlier car.)
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pmbrunelle
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FEB 20, 09:54 PM
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Raydar
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FEB 20, 10:01 PM
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| quote | Originally posted by pmbrunelle:
...
84-87 Fieros were built with the front lower control arm pivots misaligned with each other. It "works" with rubber, but not so much with poly.
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I wonder why they did that. Doesn't make a great deal of sense to place a rubber bushing under that much continuous stress. Nevermind a poly bushing.
Not like I would attempt to second-guess a GM engineer. Right? 
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pmbrunelle
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FEB 20, 10:31 PM
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| quote | Originally posted by Raydar:
I wonder why they did that. Doesn't make a great deal of sense to place a rubber bushing under that much continuous stress. Nevermind a poly bushing.
Not like I would attempt to second-guess a GM engineer. Right? |
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There was some theorizing in this thread:
https://www.fiero.nl/forum/Forum2/HTML/143165.html
A project can be its own living thing... on the project I'm working on now, some of its characteristics can only be explained as being the result of evolution over each prototype version, while not really being explainable if you only look at the current version.
Why do we have appendices and wisdom teeth 
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82-T/A [At Work]
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FEB 22, 11:24 AM
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Don't know how much this will help (I assume you've already resolved this)... but this is quite common.
I have pictures and descriptions here that might help: https://www.pontiacperforma...roSE_Suspension.html
I basically did the same thing, I slathered the ends with grease, and then used a large rubber mallet to force at least one side in enough to the point where I could get a screw driver in there, and then used the mallet on the other side to get it in as well. It was very tight, but really... that's kind of how you want it in my opinion.
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NeoNot
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FEB 25, 09:40 AM
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We have not resolved the issue, at this time.
The poly bushing, pn# 64259, is installed in the control arm and bottomed out.
The thrust washers do not want to fit over the 64259 bushings so they are not installed at this time.
We attempted to do a mockup fit of the control and discovered the 64259 bushing was to wide to fit inside of the cross member.
We have attempted to force the arm in with a hammer, a jack and even used a port-a-power to slightly expand the cross member to ease assembly.
At this point I am thinking these bushing are over sized from end to end.
Measuring them with calipers I get between 2.380 - 2.4 inches in length.
Would anyone be able to measure a bushing and let me know their overall length?
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AchillesWraith
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FEB 26, 02:40 PM
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It’s Neo’s fiero and we’ve been working on this fiero for the past few months. He’s had the bushings for about 3 years and we’re wondering if it’s possibly the poly bushings can swell?
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