I keep saying this and people keep having a love affair with everything polyurethane. Transmission mounts in anything other than rubber are the devil.
$700 motor mount conversation is as absurd as a $10,000 motor mount conversation.
Filippo
IS right engine mount now $679!!!!!! WTF?
- Thread starter Lurcher
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$700 motor mount conversation is as absurd as a $10,000 motor mount conversation.
Filippo
For sure, I rarely recommend poly. I have it in my rear subframe and a couple spots such as top strut mounts, otherwise flex is a good thing. I'd love to collect a list from you and @Asbjorn for 'what to use where'... I think you two have posted the most about recommendations!
For engine mounts going OEM is wallet busting so mounts like poly were a worthwhile experiment. I am amazed at the build quality of Revshift but sometimes my teeth get knocked out.
Transmission mounts? HELL NO. Stay rubber. You want some deflection!
Gotta say the brand new 034 motor and transmission mounts look pretty awesome. (EDIT: I was wrong about 034 read below posts) Would love to try mounting one of each on the passenger side. I wouldn't dare to do both sides neither for engine nor dct though
BTW if already purchased, you can actually use poly with the dct as long as you only do one side. Both sides is a big no no. But I would still prefer upgraded rubber for dct.
I currently run one passenger side green revshift motor mount and I don't like the vibrations. But the car is super fun to drive through corners, because there is less engine weight transfer. The softer poly isn't an option because it melts on track. So perhaps the new 034 is a good alternative to an IS mount.
As for the rest of the car... use M rubber everywhere if you want sporty comfort. And remember to avoid camber plates (nvh!!). Or go all in and use bearings everywhere if you want that ultra sharp response. Then you also do camber plates and track ready alignment to make the car extra pointy. And you'll both love and hate it. Depends on the use and roads available.
Poly can be used for swaybars (hard or soft poly) and if necessary as diff mounts (need soft poly - noone wants diff whine). Subframe mounts can be solid no problem imho. Rear strut mounts I haven't tried upgrading yet.
Otherwise avoid poly - and definitely never use soft poly for suspension arms. Its rubber, bearings or hard poly as the very last option.
BTW if already purchased, you can actually use poly with the dct as long as you only do one side. Both sides is a big no no. But I would still prefer upgraded rubber for dct.
I currently run one passenger side green revshift motor mount and I don't like the vibrations. But the car is super fun to drive through corners, because there is less engine weight transfer. The softer poly isn't an option because it melts on track. So perhaps the new 034 is a good alternative to an IS mount.
As for the rest of the car... use M rubber everywhere if you want sporty comfort. And remember to avoid camber plates (nvh!!). Or go all in and use bearings everywhere if you want that ultra sharp response. Then you also do camber plates and track ready alignment to make the car extra pointy. And you'll both love and hate it. Depends on the use and roads available.
Poly can be used for swaybars (hard or soft poly) and if necessary as diff mounts (need soft poly - noone wants diff whine). Subframe mounts can be solid no problem imho. Rear strut mounts I haven't tried upgrading yet.
Otherwise avoid poly - and definitely never use soft poly for suspension arms. Its rubber, bearings or hard poly as the very last option.
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I just ordered one. There is no way in hell I am going to risk missing out on this price again. $308 plus tax.
I suggest you guys get one while they last.
View attachment 35943
I just ordered one. There is no way in hell I am going to risk missing out on this price again. $308 plus tax.
I suggest you guys get one while they last.
UGH I really don't have the money for this, but I can't pass it up again. Son of a...
I'd there a new version out? The 034 density line has been a spectacular failure.
Wow - thanks for the heads up!! I either missed this or the price changed. Either way, it's on the way now. As I tell my wife, she is saving me money (by buying on-sale), by spending it...
ESC FTW!
ESC FTW!
Please explain. I thought the 034 rubber mounts were new, and you were complaining about old poly type 034 motor mounts?
No, I had the 034 street density mounts that everyone had when they came out. They felt like stock as far as nvh, but are likely weaker than stock as everyone that had them has them break in under 5000 miles.
I now have a bfi stage 1 mount. It is poly, and it's a rattle trap. A REALLY BAD result trap.
I now have a bfi stage 1 mount. It is poly, and it's a rattle trap. A REALLY BAD result trap.
I tried to get Ben Liaw to look at producing rubber N54 motor mounts. Couldn't get him interested. Rubber is not so easy to do, compared to poly, which is why all the poly crap is out there.
Just to be clear, @Asbjorn is likely referring to 034 Density Line mounts, which are rubber: https://store.034motorsport.com/motor-mount-street-density-line-bmw-n54-n55-passenger-side.html
Filippo
Just to be clear, @Asbjorn is likely referring to 034 Density Line mounts, which are rubber: https://store.034motorsport.com/motor-mount-street-density-line-bmw-n54-n55-passenger-side.html
Filippo
It seems you made the right choice by getting IS mounts, and I was wrong about the 034 rubber mounts being a new promising product.
It's all good, and might I add it's been nice to have this much chatter on the Z side for a change!
I already posted that the 034 are crap, there is only one type of motor mount from 034 and they are junk and fall apart. Everyone who has bought them can attest tothat
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