Poly Subframe bushings?

**audicafua** · 10-12-2016 03:15 PM

Hi All,

I have looked everywhere for poly subframe bushings and cant seem to find any. Does anyone know if any exist? Is there any reason why there wouldn't be. I know of the 034 billet aluminum ones but I don't want to dramatically increase NVH in the cabin.

Thanks

**Bordom** · 10-12-2016 04:38 PM

There is no NVH with the 034 Aluminum bushings. I have them in my B5 S4 with no issues

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**BCsniper** · 10-12-2016 04:59 PM

I also just installed the solid subframe bushings a few weeks ago, and got no additional NVH in the car. And they really lock the motor down as well which is good because we have a huge anvil sitting out in front of our axles

**CoreyRS** · 10-12-2016 05:04 PM

Thats interesting, I was sure that solid bushings would transfer the vibes a lot more.

**Bordom** · 10-12-2016 08:09 PM

Originally Posted by CoreyRS

Thats interesting, I was sure that solid bushings would transfer the vibes a lot more.

Motor mounts do that, as well as stiff enough rear diff mounts if you have any sort of gear whine

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**icanfly** · 10-13-2016 02:33 PM

Originally Posted by Bordom

Motor mounts do that, as well as stiff enough rear diff mounts if you have any sort of gear whine

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This is true - I have solid and red poly for everything accept the subframe and I do get the enhanced noise that people speak of. I don't mind it personally (DD the car and have learned to keep it smooth) but for the "sophisticated gent" that demands a silent audi posh-like-ride, I'd not suggest them. However the improvement on the way my car feels - just wow, there is zero slop in the drive train.

**audicafua** · 10-14-2016 09:50 AM

Thank for all your input. I decided to go with the 034 billet aluminum bushing set to pair with the 034 Street density motor and tranny mounts.

**BCsniper** · 10-14-2016 10:54 AM

That's exactly what I run, no complaints

**icanfly** · 10-14-2016 11:21 AM

report back on the complexity of the install. I am eager to get these parts on the car, but am not sure about both complexity of install and impact vs cost. I am loving my current setup and think this would be the final bit to lock it all down.

**audicafua** · 02-14-2017 08:59 AM

Following up...(sorry for the delay).

I would highly recommend installing the 034 billet aluminum subframe bushings. The car feels firm under all conditions whether cornering, accelerating, braking etc etc. The engine feels locked in. NVH did not increase other than additional road noise from the tires (poly lower control arm bushings).

While i had the subframe removed, decided it was an opportune time for an upgrade to the exhaust system. Installed JHM Piggies and AWE's Track Edition exhaust (had fitment issues but thats for another thread). Also installed 034's Street Density motor mounts and tranny mounts. And finally a Spulen Rear diff mount.

The job was a bit tedious. Removal of the subframe wasn't bad. You'll need a shop press to press out the old OEM bushings. They're a bit of a pain. You'll have to make a bit of clearance on the steel subframe in order to get the bushings to fit in place. I shaved a little bit off the bushings as well so that they would fit snug into the subframe. Sanded and repainted the subframe. Re-installation wasn't too bad. Took me about 2-3 days due to the piggies and such. If you're just doing the subframe bushings, it might only take a day or so. Difficulty...i'd say its a 6 out of 10. Its all worth it though.

I have pictures if you'd like to see. Let me know...

**BCsniper** · 02-14-2017 09:56 AM

Did you do just the front subframe bushings?

I am highly considering getting the solid rear subframe "bushings". The front made a huge difference with nearly no additional NVH. I am about to install coils so I was thinking of doing the solid rear bushings at the same time.

I also had to shave metal on the subframe and bushing to get them to fit. The original front bushings can however be removed with just a hammer. Apparently the rears do have to be pressed out since they are fluid filled.

**icanfly** · 02-14-2017 10:08 AM

did you guys happen to take photos during the "Shaving Process" to help people understand what's being talked about?

**BCsniper** · 02-14-2017 10:32 AM

I did not take any pictures myself. It was trial and error until we got it. I had 1 bushing hammer right in. Another 1 or 2 popped in after fighting with a shop press. Another 1 or 2 beat in after taking a hand grinder to the hole. The last ones were taken to a lathe and had a tiny amount of material taken off until it would fit. The factory subframe had very bad tolerances so some cars will be to tight to fit, others may even be loose. I have heard some just stick them in the freezer overnight and they go right in....not so for most. Mine were tight. Here was JimmyBones fixing his so they fit right: http://*******************/forum/ind...?topic=995.475

A long time ago I installed the 034 Motorsport solid billet subframe bushings but the lower rear bushings were loose because of the sloppy factory subframe tolerances. I had put tape around the two subframe bushings to make sure that they wouldn't fall out while servicing but the bushings could move while driving and it would make noises that freaked people out if they had never ridden in the car before.

So to make sure that the bushings stay in place permanently I welded some filler metal to the inside the subframe and then ground the filler metal down until the subframe bushings would go into place. Here is a picture before I started grinding to make the hole just big enough for the bushing to fit in.

**audicafua** · 02-14-2017 12:48 PM

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**audicafua** · 02-14-2017 12:53 PM

BCsniper...I will probably do the rear bushings sometime this summer. I revamped the entire front suspension...all new parts and bushings. I haven't touched the rear end but will do so when the wonderful New England winter ends.

**blubusdrvr** · 03-28-2023 09:21 AM

Reviving this one from the dead. I'm getting ready to do front and rear sub bushings as well. I don't want to go full solid (034) but would like something firmer than stock. I can't seem to find anyone who makes a poly or solid rubber bushing for the rear. Does nobody else make them?? Verkline makes a poly for the front but no rear. I really don't want to put fluid filled bushings back in the rear again.

**AudiManx96** · 03-28-2023 09:56 AM

https://www.strongflex.eu/en/catalog...-05-08-quattro

They make a rear kit

**blubusdrvr** · 03-30-2023 05:54 AM

Originally Posted by AudiManx96

https://www.strongflex.eu/en/catalog...-05-08-quattro

They make a rear kit

I did find these guys. Thanks a lot. The part number they list is for the A4. Anyone know is the sub bushing bore/depth the same in the A4? Are the bushings the same size between the A/S/RS just different make up?

**CrickiKaze** · 03-30-2023 07:15 AM

Same subframe used for all three per Audi parts IIRC. I'll double check though.

**CrickiKaze** · 03-30-2023 07:26 AM

Couldn't find where I saw the subframe referenced for all quattro's, only S4 and RS4, but at the minimum rear billet bushings are cross compatible.

**mnvwaudiguy** · 04-02-2023 08:09 AM

Originally Posted by blubusdrvr

I did find these guys. Thanks a lot. The part number they list is for the A4. Anyone know is the sub bushing bore/depth the same in the A4? Are the bushings the same size between the A/S/RS just different make up?

Bushings are the same. S4 & RS4 get a reinforced sway bar mount.

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