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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 07-10-2013, 04:32 PM
actletpone actletpone is offline
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expecting too much from stock bushings?

My car felt loose in the rear. I have replaced drive shaft guibo, csb seems good, rear subframe bushings, trailing arm bushings, diff mount, and rear shock mounts. It is somewhat better but to me still feels loose in the rear. Everything is torqued properly. Is accelerating at 50 km / 30 miles an hour then letting off the accelerator an unfair test?

Last edited by actletpone; 07-11-2013 at 01:59 AM.
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  #2  
Old 07-10-2013, 04:38 PM
markseven markseven is offline
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Quote:
Originally Posted by actletpone View Post
My car felt loose in the rear. I have replaced drive shaft guibo, csb seems good, rear subframe bushings, trailing arm bushings, diff mount, and rear shock mounts. It is somewhat better but to me still feels loose in the rear. Everything is torqued properly. Is accelerating at 50 km / 30 miles an hour then letting of the accelerator an unfair test?
Please be specific - what does "felt loose" mean?
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  #3  
Old 07-11-2013, 12:23 AM
actletpone actletpone is offline
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When accelerating and letting of the gas it felt like the rear subframe etc was loose and had back lash against the car. I also noticed the same when accelerating / de accelerating around a car park in second gear.
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Old 07-11-2013, 12:43 AM
7pilot 7pilot is offline
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Differential input bearing could be out of spec.
Drive shaft could need adjustment for preload .
Driver may need adjustment.

m
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  #5  
Old 07-11-2013, 01:59 AM
actletpone actletpone is offline
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Quote:
Originally Posted by 7pilot View Post
Differential input bearing could be out of spec.
Drive shaft could need adjustment for preload .
Driver may need adjustment.

m
I upgraded the diff to a medium case so I doubt it is that.
I just reset the preload on the driveshaft after installing the new subframe bushings.
Maybe it's the last one.
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  #6  
Old 07-11-2013, 07:05 AM
markseven markseven is offline
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Originally Posted by actletpone View Post
I upgraded the diff to a medium case so I doubt it is that.
I just reset the preload on the driveshaft after installing the new subframe bushings.
Maybe it's the last one.
Driveshaft u-joint, perhaps? Is the lash metallic-feeling or soft like a bushing?
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  #7  
Old 07-11-2013, 07:17 PM
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downhiller downhiller is offline
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no problems. your mind is just thinking theres a problem.
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I know a lot about cars. I can look at a car's headlights and tell you exactly which way it's coming
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  #8  
Old 07-11-2013, 10:27 PM
actletpone actletpone is offline
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Quote:
Originally Posted by markseven View Post
Driveshaft u-joint, perhaps? Is the lash metallic-feeling or soft like a bushing?
It feels more like a bushing feel than a solid metallic clunk to me. Maybe im expecting too much. What should I feel in the rear when accelerating then quickly removing my foot from the gas, is some backlash feeling normal?
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  #9  
Old 07-12-2013, 11:00 AM
markseven markseven is offline
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Originally Posted by actletpone View Post
It feels more like a bushing feel than a solid metallic clunk to me. Maybe im expecting too much. What should I feel in the rear when accelerating then quickly removing my foot from the gas, is some backlash feeling normal?
What you are experiencing is not normal, IMO. It seems as though you have addressed the usual suspects... which subframe bushings did you install?
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  #10  
Old 07-12-2013, 09:52 PM
actletpone actletpone is offline
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Originally Posted by markseven View Post
What you are experiencing is not normal, IMO. It seems as though you have addressed the usual suspects... which subframe bushings did you install?
Stock ones, a brand called topran. Maybe it is in the driveshaft u joint I have not noticed it when rotating the driveshaft up on stands. I know the shocks are not the best. I have noticed up on stands if I rotate the driveshaft there is slight play in the inner cv joints but I remember reading somewhere up to 1 mm of rotation is normal? When letting of the gas sharply during acceleration to my untrained self it feels like what I would imagine worn subframe busihings / trailing arm bushings to feel like. I know I am being pedantic either way.
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  #11  
Old 07-13-2013, 07:05 AM
markseven markseven is offline
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Lemforder are the OEM for subframe bushings, IIRC.

Check that DS U-joint.
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  #12  
Old 07-28-2013, 06:39 PM
actletpone actletpone is offline
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Don't know

Last edited by actletpone; 12-08-2013 at 12:48 PM.
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  #13  
Old 07-30-2013, 12:40 AM
markseven markseven is offline
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Too much.
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