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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 06-19-2013, 06:04 AM
Afredo Afredo is offline
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Location: Albany, NY
 
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Mein Auto: 1989 325i, 1995 525iT
e30 lower control arm issues

Hey guys, attempting to remove ans replace the lower control arms on my '89 325i coupe. Got the strut balljoint out on either side easily and the two bolts securing the bushing brackets to the frame out easily as well, but then came as you all.must know the infamous 22mm nut on top of the subframe securing the middle balljoint.
Even with removing the entire away bar I still did not have enough room to get any leverage on the nut with a wrench. Attempted to drop the subframe as far as I could without damaging any of the steering components attached to it (two of the long bolts connecting the subframe to the steering.rack will not come out) and was able to get a socket with a long extension and universal onto the 22mm nut on each side from above. Hit both repeatedly with pb blaster and then with a snap-on impact gun and neither nut will even budge. No idea what to do from here, I don't have a torch and I don't have any way to get a larger capacity compressor or one that will. Be able to fully realize the full potential of my gun and since the car is apart on jacksyands in my driveway, can't take it to a shop anywhere. Help!
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  #2  
Old 06-19-2013, 05:23 PM
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hornhospital hornhospital is offline
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Mein Auto: 1995 318is / 1993 325is
22mm service wrench and a 3' piece of pipe. Forget the impact wrench. Unless you have a commercial quality air wrench with a 3/8" or 1/2" air line, you'll never break them loose.
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  #3  
Old 06-19-2013, 05:42 PM
Afredo Afredo is offline
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Mein Auto: 1989 325i, 1995 525iT
Quote:
Originally Posted by hornhospital View Post
22mm service wrench and a 3' piece of pipe. Forget the impact wrench. Unless you have a commercial quality air wrench with a 3/8" or 1/2" air line, you'll never break them loose.
My snap-on gun is air powered rated to 700 ft lbs I believe
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  #4  
Old 06-19-2013, 06:33 PM
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First time First time is offline
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Location: in my house
 
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Mein Auto: 1984 318i
e30 lower control arm issues

^ guess thats not enough...


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  #5  
Old 06-19-2013, 07:46 PM
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downhiller downhiller is offline
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Mein Auto: 2012 hypermotard 796
well get a craftsman 22mm wrench and a 6ft bar. itll definitely break something, loose or in pieces.
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Old 06-19-2013, 08:20 PM
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hornhospital hornhospital is offline
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Location: In the Grumpy Chair
 
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Mein Auto: 1995 318is / 1993 325is
Quote:
Originally Posted by Afredo View Post
My snap-on gun is air powered rated to 700 ft lbs I believe
At what flow rate and PSI? There's the rub. A home air compressor setup can't drive a 700lb/ft gun to full capacity. You might have the PSI, but the CFM can't get through a 1/4" hose, the size 99% of home setups have.

Some tricks you can try: As short a hose as possible, 3/8", or better yet 1/2" hose with quick disconnects of the same size if you have a 1/2" outlet on your air receiver. Fill the gun inlet with air tool oil just before trying to remove the nuts.
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Quotes to live by:
guessing gets expensive...drivinfaster
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BMW-CCA #441426
1995 318is "Bebe"; 1993 325is "Elvira" 1985 635CSi "Katja" 1984 633CSi "Sylvia"
HAVE I HAD MY MEDS YET?


Last edited by hornhospital; 06-21-2013 at 12:49 PM.
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  #7  
Old 06-20-2013, 02:45 AM
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Nick323 Nick323 is offline
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Location: Windhoek, Namibia, Africa
 
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Mein Auto: 323i E30 2-door
On big nuts/bolts only a power/breaker bar will work !
Forget air tools to break loose the big stuff....
Especially if it is fine thread.
& a bit of penetrating oil to coerce the confounded parts
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  #8  
Old 06-20-2013, 11:26 PM
7pilot 7pilot is offline
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Location: i dunno
 
Join Date: Feb 2011
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Mein Auto: 90 Ford Tempo
I use :
1, a 22mm 1/2 drive short socket with
2, a 1/2 drive adapter that you can slip a box wrench over.The adapter allows you to use a box end spanner instead of the thick ratchet head.
3, a cheater bar or another box end wrench for a little more leverage.

or

a 22mm box wrench and a cheater.

Most of all, you'll need patience
She helps a lot, plus she's better if you walk away from the job for a bit.

Since you have a compressor, zip gun with a sharpened chisel attachment could be used the chase /cut the nut and break the chemical lock.

m

Last edited by 7pilot; 06-20-2013 at 11:27 PM.
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