e21 tranny mounts

[oldskool3]

Hey keep this thread on topic :mrgreen::mrgreen:

[Teaguer]

Slow day Teaguer? :mrgreen:

You can tell ? :D

Playing hookie from work . ;)

[FredK]

Slow day Teaguer? :mrgreen:

[oldskool3]

The E21 mounts are painted green for some reason, but the paint chips off pretty easy, exposing a rubber puck. That might be the reason you thought they were urethane.

Ya i think the earlier factory e21 mounts where painted blue for some reason. Someone said it was due to them being the stiffer ones over the later style.

I didn't even realize urethane could be spelled five different ways:
urithane, eurathane, urethaine, uerethane, eutethane. :mrgreen:

:mrgreen: You learn something new everyday :mrgreen:

[Teaguer]

I didn't even realize urethane could be spelled five different ways:
urithane, eurathane, urethaine, uerethane, eutethane. :mrgreen:

Hahahaha ! :finger:

[FredK]

The E21 mounts are painted green for some reason, but the paint chips off pretty easy, exposing a rubber puck. That might be the reason you thought they were urethane.

I didn't even realize urethane could be spelled five different ways:
urithane, eurathane, urethaine, uerethane, eutethane. :mrgreen:

[oldskool3]

Only mod is to open up the hole in the trans crossbrace .

The increase in NVH was bigger than just uerethane engine mounts ...maybe because they are right under the cabin but they made the biggest difference in noise .

Its still tolerable for me though ...and this is in the M42 which is buzzier than an M20 by a long shot .
If you car is running good then it is tolerable for most of us .
Encountered a bad vacuum leak on the 318 and they were horrible for a few days until I tracked down the leak .

I can get pics by Sat of all three mounts side by side if that will help anyone wanting to see the differences .

Also if you go with the stock E21 mounts there are also the cups available to increase their effectiveness or you can make some up real easily too .

I am thinking I will just stick to the earlier e21 mounts as i heard they were stiffer than the later ones. Those with my eutethane motot mount and I think I should be good. I have seen thos pieces that cup the mount and I was thinking I would try and make some, they seem pretty straight forward. For right now I just want to get everything back to together so I can take it out of winter storage. Thanks a lot for the advice/help.

[Teaguer]

Only mod is to open up the hole in the trans crossbrace .

The increase in NVH was bigger than just uerethane engine mounts ...maybe because they are right under the cabin but they made the biggest difference in noise .

Its still tolerable for me though ...and this is in the M42 which is buzzier than an M20 by a long shot .
If you car is running good then it is tolerable for most of us .
Encountered a bad vacuum leak on the 318 and they were horrible for a few days until I tracked down the leak .

I can get pics by Sat of all three mounts side by side if that will help anyone wanting to see the differences .

Also if you go with the stock E21 mounts there are also the cups available to increase their effectiveness or you can make some up real easily too .

[oldskool3]

You guys are mistaken .

The stock Early E21 320i mounts are rubber NOT eurethane as stated .
They are more desireable because the design and shape of them makes them firmer and hold up better over time .

I have both stock E21 rubber and AGK eurethane E21 mounts on my cars .
Stock for a nice upgrade from worn out mounts and eurethane for a firmer shift feel and more overall NVH .

I didn't think they where eurethane as I couldn't imagine BMW having eurethane tranny mounts on a car produced in 1978. Did you have to do any mods to get them to fit? How much more harsh is the AGK's Thanks a lot

[Teaguer]

You guys are mistaken .

The stock Early E21 320i mounts are rubber NOT eurethane as stated .
They are more desireable because the design and shape of them makes them firmer and hold up better over time .

I have both stock E21 rubber and AGK eurethane E21 mounts on my cars .
Stock for a nice upgrade from worn out mounts and eurethane for a firmer shift feel and more overall NVH .

[oldskool3]

You won't know until you try them. I would try them, they are easy enough to swap out.

Thats the plan. Apparently you have to open up the wholes on the cross member a bit an also on the tranny dog ears but I have no problem with that Ill let you know how it goes.

[JGood]

That's an opinionated statement that you heard. You won't know until you try them. I would try them, they are easy enough to swap out.

[oldskool3]

Why don't you just get the urethaine race or street buchings from understeer?

That don't have a set for e30's. I could get eurathane bushings from ie but everyone has told me that they are very harsh and didnt recommend them.

I figured that if the 320i bushings where stiffer that the stock e30 bushings but not as stiff as the ie eurethane bushings they would be the best bet.

[Mike325]

Why don't you just get the urethaine race or street buchings from understeer?

[oldskool3]

Solid trans mount = bad.

Sorry I didn't mean solid I just meant stiffer than the stock e30 rubber bushings

They are urithane not solid. I wouldn't run solid trans mounts, only solid motor mounts. Which remind's me, i need to get a urithane trans mount for my firebird.

I didn't know that bmw made stock eurathane bushings.

So would you recommend the e21 mounts. I am geussing they wouldnt be as stiff/ harsh as the ie urethane trans bushings. I am already running the ie eurthane motor mounts.

Plus my brother has has run the 320 bushings for a year without any problems/ harsh vibrations.