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E36 /7 Z3 (1996-2002)
E36/7 Z3 roadster and coupe talk with our gurus here.

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  #1  
Old 08-07-2003, 04:58 AM
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tell me the trick for getting the rear OEM springs out

I'm installing a new suspension and the front was quite easy but getting the rear OEM springs out is proving pretty hard. I have disconnected the shock and sway bar link, let the trailing arm drop. what is the trick? is it a brute strenght thing? (I haven't disconected the drive shaft... but I've read it's not necessary..)
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  #2  
Old 08-07-2003, 05:29 AM
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The trailing arm will droop enough to get the springs out (on an M Rdstr), are you sure you're not restricting droop with either the exhaust or halfshafts?
BTW, I didn't have to drop the swaybar link (both sides droop together), but I did undo the exhaust/halfshafts.
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  #3  
Old 08-07-2003, 05:45 AM
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I have to double check the exhaust but it didn't look to me like it was in the way. I really don't want to mess with the halfshaft. Most of the install how-to's say that it is not strictly necessary.
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  #4  
Old 08-07-2003, 05:57 AM
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Quote:
Originally Posted by AC
I'm installing a new suspension and the front was quite easy but getting the rear OEM springs out is proving pretty hard. I have disconnected the shock and sway bar link, let the trailing arm drop. what is the trick? is it a brute strenght thing? (I haven't disconected the drive shaft... but I've read it's not necessary..)
We used very little force on a prybar to help work them out. There was not enough play to simply pull them out when we lowered the jack supporting the trailing arm. I would assume this is the same on the M as Shawn McCurdy did it this way as well.

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  #5  
Old 08-07-2003, 06:06 AM
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Somehow I don't think my trailing arm drops as much as that.... anyway it's off to Sears to get a pry bar.
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  #6  
Old 08-07-2003, 07:09 AM
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Disconnected the sway bar links and I ended up putting my spring compressor on to finally shorten it up enough for removal.
Pick that up @ Sears while you're there.
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  #7  
Old 08-07-2003, 09:52 AM
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You can lower the differential at the rubber mount.
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  #8  
Old 08-07-2003, 09:59 AM
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Originally Posted by Ron Stygar
You can lower the differential at the rubber mount.
This is a really easy way to do this. Use a second jack under the diff to hold its weight. This way you can avoid messing with the 12 x E12 bolts at the 2 half shafts. I always replace those E12s (aerospace habits die hard) so the diff mount method is really nice.
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  #9  
Old 08-07-2003, 10:19 AM
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you can try a pry bar on the control arm to get additional clearance, BMW service literature recommends dropping the halfshafts first, this is what is causing the binding

never tried it on the Zcoupe, but it worked on the M3 without dropping the shafts
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  #10  
Old 08-07-2003, 10:42 AM
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well, the pry bar alone is probably not going to do it.... Ron (or anyone else) what's that about the dropping the diff?
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  #11  
Old 08-07-2003, 10:49 AM
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Quote:
Originally Posted by AC
well, the pry bar alone is probably not going to do it.... Ron (or anyone else) what's that about the dropping the diff?
Unbolt this bolt:



Like I posted above, you will need a jack to support the weight of the diff to lower it. You will be able to drop it down 1" or so, which should let the springs right out. No need to unbolt half shafts this way. I do not know torque value off hand, but search archives under my name or Ron's with "3.46" as search word and you will find it yourself.
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  #12  
Old 08-07-2003, 10:52 AM
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thank you....but that picture begs the question: how do you keep the bottom of the car so clean?????
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  #13  
Old 08-07-2003, 10:56 AM
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Originally Posted by AC
thank you....but that picture begs the question: how do you keep the bottom of the car so clean?????
Once a year I clean it. It's a horrendous amount of work. In the words of an old man: "Once it's clean, it's easy to keep clean". Getting it there is what takes so long.
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  #14  
Old 08-07-2003, 11:16 AM
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Quote:
Originally Posted by AC
well, the pry bar alone is probably not going to do it.... Ron (or anyone else) what's that about the dropping the diff?

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  #15  
Old 08-07-2003, 12:28 PM
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Oh OK I got it now It was a real Duh! moment.......


OK ready? here's the hot tip:...... the car has to be in NEUTRAL! duh! as soon as it was the trailing arms dropped another half inch and the springs came right out sheesh! well at least I got a good work out!
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  #16  
Old 08-07-2003, 08:55 PM
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oh yeah, I meant to say that you may need to rotate the drivetrain to get the optimum CV joint positioning, which would have put you in neutral ... sorry
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  #17  
Old 08-08-2003, 04:43 PM
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Quote:
Originally Posted by AC
thank you....but that picture begs the question: how do you keep the bottom of the car so clean?????
AC,

Don't believe JonM or Ron on that "we cleaned them up and keep them that way.." This is like the old navy trick of sending the new seaman after six feet of waterline! The both of them have a second car that was trailered directly to their garages from BMW, never ever even seeing the pavement! They then plan each and ever one of the "show me" picture post, knowing that all of us are just green with envy at the pristine state of their coupes, having a good chuckle at our expense!

"You know Ron!".. "Yes, Jon?".. "This photo ought to have at least a dozen of them out there on the ground, under their car, trying to get it this clean!"... "Thats some funny stuff, Jon! Your a riot!"

OK.. It's not really the truth.. But it's the only way I can live with myself!

I'm lucky to keep the inside that clean!
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  #18  
Old 08-08-2003, 06:21 PM
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Randy Forbes Randy Forbes is offline
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Wait until you see the bottom of Big Al's car, he's been polishing under there all summer!

Best we can hope for is that he hits some rain or construction zones on the way down

With his GPS, there's little hope of him getting lost on a dirt road...
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1957 Austin-Healey 100/6 Wine Red
1961 McCulloch R1 go-kart Screaming Yellow
1995///M3 Coupe Dakar Yellow Eurosport Twinscrew S/C
1999///M Rdstr Cosmos Black Eurosport Twinscrew S/C
1999///M Coupe Estoril Blue Eurosport Twinscrew S/C
2001///M Rdstr Steel Gray
2011 X5 35i Sport Deep Sea Blue/Cinnamon
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