2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

source of thump after rear camber adjusters installed

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Old May 17, 2010 | 05:03 PM
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source of thump after rear camber adjusters installed

I installed these either last year or the year before, can not remember actually.
But anyhow I had this clunk I could not track down, keeping in mind what another member had said in the past:

Originally Posted by NMJ87T2
When the subframe and diff was removed. I reshaped the underbody so that they would not hit!! Just a slight hammer action is all it took.

I was installing some spacers on the rear wheels and peeked my head under the car and finally it showed up. I dont drive my car very often but im thinking from sitting over the winter the area got its surface rust and showed up, previous glimpses under the car while on a lift did not reveal itself and these were installed at the same time as new shocks, mounts, and springs.

Anyhow- for those wondering what to modify its actually pretty simple:

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Old May 17, 2010 | 06:45 PM
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have any more pictures of the adjusters installed?

im buying a set, and havent seen them installed before.
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Old May 17, 2010 | 06:55 PM
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im sorry I dont have any others
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Old May 17, 2010 | 08:35 PM
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Simply a case that your rear sub frame is now simply tighter to the body. Time to install a snubber assuming thefront diff mount is good.
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Old May 18, 2010 | 07:28 AM
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all my mounts are new
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Old May 18, 2010 | 08:51 AM
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The MMR camber adjusters will not do that. They also do not need to be lubed.
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Old May 18, 2010 | 08:52 AM
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Originally Posted by HOZZMANRX7
Simply a case that your rear sub frame is now simply tighter to the body. Time to install a snubber assuming thefront diff mount is good.
A snubber will not fix that issue. Solid subframe bushings might fix it.
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Old May 18, 2010 | 09:06 AM
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Seems like a poorly designed adjuster.... If that extra long bolt wasn't there doesn't seem like there would be any clunking. Can it be trimmed? replaced ?
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Old May 18, 2010 | 09:23 AM
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a pinion snubber is still a very good idea if the subframe sits closer to the body. whats wrong with cheap insurance? have you ever seen how much the diff moves around, specially under heavy load?

Lloyd
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Old May 18, 2010 | 09:40 AM
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its a Racing Beat unit, I dont care if it requires grease, I actually like that it has a grease fitting on it

I would imagine that on some cars it would not contact otherwise there would be more people knowing about it, could just be that by the time mine was adjusted at the alignment shop it makes contact once in a while.

It does not contact ALL the time, just now and then
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Old May 18, 2010 | 01:12 PM
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Originally Posted by magus2222
a pinion snubber is still a very good idea if the subframe sits closer to the body. whats wrong with cheap insurance? have you ever seen how much the diff moves around, specially under heavy load?

Lloyd
Mine doesnt move at all, but I have solid diff mounts and subframe bushings. The pinion snubber is to provide support to the rubber diff mount, not support the subframe.
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Old May 18, 2010 | 01:14 PM
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Originally Posted by Rob XX 7
its a Racing Beat unit, I dont care if it requires grease, I actually like that it has a grease fitting on it

I would imagine that on some cars it would not contact otherwise there would be more people knowing about it, could just be that by the time mine was adjusted at the alignment shop it makes contact once in a while.

It does not contact ALL the time, just now and then
It depends on how low your car is, and how much camber you run. It is a fairly common issue that the AWR/Mazdatrix adjusters hit the back of the bins.
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