differential cover bushings available separately?

[0-60motorsports]

Interesting… I got them as a clunk riddance device because they were plug and play fit. Dayenu. I had no idea there was a difference in material. I wonder why. Most engineers would simply carry over the part.

maw

At the end of the day I've had it for years and they are fine. Many other cars have installed them and are fine so I wouldn't sweat it. Go with what you feel happy with.

[maw1124]

Interesting… I got them as a clunk riddance device because they were plug and play fit. Dayenu. I had no idea there was a difference in material. I wonder why. Most engineers would simply carry over the part.

maw

[Obioban]

Yes, someone measured them back on m3f.

[0-60motorsports]

Has anyone measured this? What makes us think they’re softer?

maw

This. I have been using them for years LOL

[maw1124]

e36 ones are softer, so a performance downgrade (probably NHV upgrade).

Has anyone measured this? What makes us think they’re softer?

maw

[ugaexploder]

You have zero gear whine?

What subframe bushings are you running?

PSM solid

[Tbonem3]

Dubious claim. I had a significant increase in whine, but am fine with it as it's most pronounced at freeway speeds I seldom use, plus I added more sound insulation under rear bench. I'm perfectly happy with the AKG, mind.

[discoelk]

Poly diff with poly subframe has almost no whine in my experience. I used Revshift subframe and ECS diff in my old car.

Sorry for off-topic, OP.

[9kracing]

Same here, I'm on the 95A ones and no noticeable NVH at all.

You have zero gear whine?

What subframe bushings are you running?

[ugaexploder]

I use AKG bushings. Works great and easy to install.

Same here, I'm on the 95A ones and no noticeable NVH at all.

[MathewM3]

I use AKG bushings. Works great and easy to install.

[nextelbuddy]

I understand. Thank you for the explanation

[Obioban]

e36 ones are softer, so a performance downgrade (probably NHV upgrade).

If you want new stock, the only option is a new cover. Other than the e36 bushings, everything you can press in in place of stock is a huge NHV penalty.

[nextelbuddy]

E36M3 diff bushings are a direct fit with a press.

so you can purchase e36 m3 rear diff cover bushings (which are a direct fit to the e46 m3 cover) separately but not the e46 m3 ones. got it.

[jayjaya29]

E36M3 diff bushings are a direct fit with a press.