Rear Sub Frame Bushes

Need technical Q/A then you're in the right place

Moderator: martauto

User avatar
Gavla
E30 Zone Squatter
E30 Zone Squatter
Posts: 1586
Joined: Tue Dec 06, 2011 11:00 pm

Post Sun Feb 17, 2013 10:40 pm

Would it be easier replacing the rear subframe bushes on or off the car?
Sanchez
Married to the E30 Zone
Married to the E30 Zone
Posts: 7578
Joined: Sun Apr 17, 2005 11:00 pm
Location: Sunny Scotland

Post Sun Feb 17, 2013 10:54 pm

most say off but depends on what tools you have to hand.
Image
User avatar
Brianmoooore
E30 Zone Team Member
E30 Zone Team Member
Posts: 49360
Joined: Mon Jan 10, 2005 11:00 pm

Post Sun Feb 17, 2013 11:00 pm

Far easier to replace them with the beam off of the car, but that doesn't mean it's easier to remove the beam and replace them, then reattach the beam than to replace them with the beam on the car.
Only makes sense to remove the beam to change them if you are doing brake line and fuel tank work at the same time.
User avatar
Gavla
E30 Zone Squatter
E30 Zone Squatter
Posts: 1586
Joined: Tue Dec 06, 2011 11:00 pm

Post Sun Feb 17, 2013 11:29 pm

If replacing on the car, how long should it take, not encountering any major issues and with the correct tools?
User avatar
Brianmoooore
E30 Zone Team Member
E30 Zone Team Member
Posts: 49360
Joined: Mon Jan 10, 2005 11:00 pm

Post Sun Feb 17, 2013 11:34 pm

With the correct tools, half a day should easily be long enough for both of them.
Mo13
E30 Zone Regular
E30 Zone Regular
Posts: 722
Joined: Tue Apr 03, 2012 11:00 pm
Location: East London

Post Mon Feb 18, 2013 9:04 am

I replaced my beam due to a broken bracket for the trailing arm. it was a pain getting the existing bushes out of the beam itself unless you have a bush removal tool you will need to strap it to a vice heat it up and hammer it out with a big socket. Not sure how you would get oem bushes into a beam without the tool, possibly improvising with a rod nuts and washers to put it back in. I used poly bushes so they went in easy for me.

I had a ramp and a couple of transmission jacks and there was 2 of us so you will defiantly need some help if you decide to take the beam off of the car. Took me about 4-5 hours to get it done, can imagine it taking a lot longer trying to do this axle stands.
User avatar
Brianmoooore
E30 Zone Team Member
E30 Zone Team Member
Posts: 49360
Joined: Mon Jan 10, 2005 11:00 pm

Post Mon Feb 18, 2013 9:16 am

Old bushes can be removed by drilling out the rubber out to the large metal sleeve with a suitable hole saw, then making a single cut through the sleeve with a hacksaw. The 'knuckle dragger' method is to set fire to them, until they just fall out.
New bushes can be drawn in with some non permanent lubricant (washing up liquid or tyre soap) and a length of threaded rod and a selection of washers/spacers. There's a pic. of a home made tool on here somewhere, made up with a couple of galvanised pipe fittings.
User avatar
Gavla
E30 Zone Squatter
E30 Zone Squatter
Posts: 1586
Joined: Tue Dec 06, 2011 11:00 pm

Post Mon Feb 18, 2013 9:28 am

Thanks for the help Gents