Diff bushings

[m3f_jrbm3]

While doing the rear subframe bushings I noticed that the 3 differential mount bushings were cracking. I track this car regularlly. Does anyone have any experience with the VAC solid bushings in the e36 M3?



http://store.vacmotorsports.com/vac-...-kit-p509.aspx



Any others that would work?



j

[m3f_Herbert]

There are only three options that I have found, a) derlin front w/ solid cover bushings, b) solid at all three points, c) oem. I am going with oem, as they lasted 200k+ and only cost like $16. Even bimmerworld says they are good for track.

[m3f_jrbm3]

There are only three options that I have found, a) derlin front w/ solid cover bushings, b) solid at all three points, c) oem. I am going with oem, as they lasted 200k+ and only cost like $16. Even bimmerworld says they are good for track.

good to know thanks

makes me feel alittle better about staying OEM with this one part.



j

[m3f_SG_M3]

How do you feel about gear wine? If you LOVE it, go solid, otherwise stay OEM.

[m3f_cracky]

depends on set up...its not THAT bad with an interior and oem subframe mounts...

imo. (thats what im running right now).

there wasnt much of an increase in gear noise. A little yes... Its kinda cool(and not even close to being over bearing or harsh). it only shows itself at certain rpm/load conditions and if i have music on at reasonable levels. I dont hear it at all.


To the OP. Why did I go with them? I bought a big box of new assorted bushings and they were in there. Thats all.

[m3f_pbonsalb]

In addition to OEM rubber, aluminum, and delrin, there are poly diff bushings. I would not run all solid except on a track car, but Turner suggests that using solid for the two ears and poly for single front bushing is not overly harsh on the street. I use poly diff bushings from AKG and my car is a still a street car.

[m3f_JPoland]

In addition to OEM rubber, aluminum, and delrin, there are poly diff bushings. I would not run all solid except on a track car, but Turner suggests that using solid for the two ears and poly for single front bushing is not overly harsh on the street. I use poly diff bushings from AKG and my car is a still a street car.

I too will be putting in the poly AKG diff bushings this winter.

[m3f_shaeff]

I've got the AKG Poly diff bushings. They're more like hard plastic/nylon than what most people consider conventional "poly".


In any case, the increase in gear whine is definitely noticeable. I don't mind it, and it's most noticeable at lower speeds, say around 35-40mph. Cruising I don't notice it much at all. I DD my car from late April through November.


If you like a quiet, cushy ride then anything other than OEM diff bushings aren't for you.


Note: I also have all poly in the back of my car on everything except the sway bar bushings, new wheel bearings, new ball joints, etc...- whole rear subframe was overhauled and reinforced so it transmits more gear whine than a car with an otherwise stock subframe.

[m3f_JPoland]

I've got the AKG Poly diff bushings. They're more like hard plastic/nylon than what most people consider conventional "poly".

+1 they are definitely very stiff.

[m3f_jrbm3]

+1 they are definitely very stiff.

Just ordered a set from David at Harrisons MS and will be installing next week with the PF subframe bushings.

thx



j

[m3f_thedood]

Good choice, Jon! I picked up the front AKG bushing from David yesterday... he was out of the ear bushings. We need to get back out to TGPR again!

[m3f_jrbm3]

[QUOTE=thedood;1064554062]Good choice, Jon! I picked up the front AKG bushing from David yesterday... he was out of the ear bushings. We need to get back out to TGPR again![/QUOT



sounds good



j