How to remove Diff Bush?

[tim_haynes]

Hi Guys, i have a lsd but it needs the bush replacing badly, could someone tell how you do this and what is the best replacement to buy for track use?

Any help would be great thanks.

Tim

[rix313]

The crude way is with a blow torch and burn the bugger out of there.

A good replacement for the track is a stiffer Powerflex jobby.

You can get the Powerflex diff bush from here: http://www.zonemotorsport.co.uk/store/s ... ex_e30.htm for £20 odd I think, cheapeast around and Paul is a legend

[daimlerman]

Sophisticated way is to use a hacksaw,feed the blade through the centre hole and cut it including the outer steel bush.
Polybush is dead easy to fit.
Z3M rubber bush is an alternate upgrade,but it will require a press to fit.

[tim_haynes]

Thanks guyS!! i thought it had to be brutal haha!

Will get a price on z3m one if not powerflex fine!

[bimanut]

you`l be there all day using a hacksaw,the way i got mine out was to cut the rubber part out,then carefully nick the steel coller out with a small grinder then heat it up a bit with a torch and started nockin it in with an old screwdriver to get the steel to buckle in on its self then it just started to drop through. replaced it with a polybush which is a dodle to put on

[clarko74]

I did mine with a hacksaw and it wasn't too hard at all. I replaced it with a z3m bush and managed to press it in with a big vice.

[suzie650]

It can also be pressed out...
probably not with a vice, though.

[mrLEE30]

it should be pressed out!!

[suzie650]

hence the [...]

[Jon_Bmw]

Quite a few people have experienced cracked backplates when pressing new bushes in. I am not sure if this is 'ham-fisted-ness' or a proper problem. Try not to be to gun-ho with the mallet anyway.

[tim_haynes]

Thanks guys for all the info will let u no how I get on;)

[tim_haynes]

sorry guys just one quick question,

what is the difference between the 325i diff bush and the z3 m? they both fit exactly the same? one is stronger?

[DHFiS]

sorry guys just one quick question,

what is the difference between the 325i diff bush and the z3 m? they both fit exactly the same? one is stronger?

I think thats right. The z3 is an upgrade but not as easy to fit as a 2 piece polybush.

[bimanut]

polybush deffo the way forward cuz if for some reason or other you have to change it again it`ll just come apart when the end plates are removed.
A chimp could fit these!

[Simon13]

you have to be very careful with a vice as the back plate is only ali and it crack either rendering the backplate scrap!

A press to push the old and new ones is the proper way really.

ZM3 bush although is expensive is designed to keep 320bhp in check and is well up to the job

[tim_haynes]

ok thanks guys, sorry i sound like a monkey!!

[tim_haynes]

New Z3M Bush in, used all your advice. Thanks!

[Joshy]

So a vice is 150% needed for this job? Is there not anything a budding road side mechanic like myself could do?

I'm thinking hammer time?

[Brianmoooore]

Diff bush in the freezer, backplate in the oven. Lay the backplate on a wide piece of flat wood, lay the bush in place, and tap it in SQUARE with another block of wood and a hammer.