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

How tight is too tight?

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Old May 22, 2010 | 02:44 PM
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How tight is too tight?

Im installing new differential mount spacers (Big Rubber Spacers). The fsm says 65-77 ft-lbs. Im concerned because im squishing the rubber part of the spacer pretty bad... am i doing this right?

Old and new spacers


After loosening a bit, no where close to 70 ft-lbs
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Old May 22, 2010 | 09:58 PM
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Yes, just torque them to spec. They will squish which is what they are designed for (pre-loads it in there to prevent the frame/diff from bouncing around).
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Old May 22, 2010 | 10:01 PM
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just from experience,.. It can never be too tight Oh wait we are talking about cars....
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Old May 23, 2010 | 01:39 PM
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Thanks for the info! I worked on assembling this yesterday and im installing it today!

All new ES bushings,
Solid MMR diff and subframe mounts,
competition front diff mount,
custom lateral links,
new camber adjuster,
Limited Slip Diff

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Old May 23, 2010 | 01:54 PM
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Normally, the diff snubbers shouldn't be compressed like that. It's not good if MMR diff bushings allow that to happen. The nut load should pass through the center of the spacer rather than the "crown prongs".
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Old May 23, 2010 | 02:15 PM
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Originally Posted by GOT-RTRY
Thanks for the info! I worked on assembling this yesterday and im installing it today!

All new ES bushings,
Solid MMR diff and subframe mounts,
competition front diff mount,
custom lateral links,
new camber adjuster,
Limited Slip Diff
If you are truly running the solid Diff and subframe mounts, that camber adjuster you got (the single "dog-bone" style one) will not do anything to adjust camber. The only reason that single camber link adjusts camber in the first place is because the rubber bushings allow the subframe to flex. Running solid mounts will result in no camber adjustment with that camber adjuster.

You need to run the MMR individual camber adjusters with spherical bearing control arm bushings. You will need the spherical bearings since it will be your only source to allow the free-play in the control arms for camber/toe settings.

Originally Posted by cone_crushr
Normally, the diff snubbers shouldn't be compressed like that. It's not good if MMR diff bushings allow that to happen. The nut load should pass through the center of the spacer rather than the "crown prongs".
Those are not diff snubbers. Neither are they MMR diff bushings.
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Old May 23, 2010 | 04:12 PM
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Originally Posted by jjcobm
If you are truly running the solid Diff and subframe mounts, that camber adjuster you got (the single "dog-bone" style one) will not do anything to adjust camber. .
100% correct.
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Old May 23, 2010 | 05:42 PM
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Originally Posted by jjcobm
Those are not diff snubbers. Neither are they MMR diff bushings.
They're called Stop Washers and they do in fact do act as travel limiters (snubbers) for the diff. Hard to tell, but the diff bushings do appear to be MMR solid.
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Old May 23, 2010 | 06:29 PM
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Nice lateral links. What did you use to make em?
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Old May 23, 2010 | 07:11 PM
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it almost appears you are using TWO "crown" mounts per side, for a total of 4 "crown" mounts.. if so, yeah you've got it wrong, there should only be one per nut, one on each side of the diff, and then the 2 mounts on the front of the rear subframe, the one that has that extra 14mm nut and bracket.

i don't seem to remember any of my subframe mounts compressing that much.
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Old May 23, 2010 | 08:25 PM
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Originally Posted by lastphaseofthis
it almost appears you are using TWO "crown" mounts per side, for a total of 4 "crown" mounts.. if so, yeah you've got it wrong, there should only be one per nut, one on each side of the diff, and then the 2 mounts on the front of the rear subframe, the one that has that extra 14mm nut and bracket.

i don't seem to remember any of my subframe mounts compressing that much.
You are right, in the picture he has the new ones on the top, they should be one on the bottom of the diff on each side like the picture that shows it mounted on the chassis.
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Old May 23, 2010 | 08:58 PM
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Originally Posted by lastphaseofthis
it almost appears you are using TWO "crown" mounts per side, for a total of 4 "crown" mounts..
im not running 4 crown mounts those are the ones for the bottom just resting on top, that way i didnt lose them before install. same goes for the subframe crown mounts you see resting on top. sorry for the confusion.

i am running mmr hard mounts, i didnt know about the dogbone camber adjusters uselessness in my situation. looks like i will have to save up some money for the other kind. as for now its set at the stock length and everything is installed and im sure not taking it off at this point. as of right now my engine setup will be stock, i am trying to fix up the suspension for a future bad *** set up

i did not make the lateral links they were on the old subframe so i snagged them, they are just like camber adjuster but lateral link size

and thanks for the input! the news about the dogbone is depressing but helpfull

Heres the front

Last edited by GOT-RTRY; May 23, 2010 at 09:10 PM.
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