Check your non-oem Transmission Mounts

thelinux · 09-10-2013, 04:51 PM

Quote:

Originally Posted by StickMon

I think I'll put my car up on the stands and inspect the mounts and A/C drain this weekend.
I put RE mounts on about a month ago, and it's been a hot month.
Better check and make sure I don't have the same thing going on.
I'll try and find that drain hose and get some pictures, and maybe come up with a mod to drain it past the mounts.

Thanks. Now my fingers are crossed.

Blind32 · 09-11-2013, 01:19 PM

Quote:

Originally Posted by gmbbs

Coincidentally I was under my car this weekend, and found my red trans mounts have done the same exact thing, just the right side mount, which is the one the A/C hose drains onto. I need to research alternate trans mounts, and I'm going to extend the drain hose down below the trans mount level.

Funny that Blind32 and I are both in Dallas...

Quote:

Originally Posted by inTgr8r

...there we have it! The root cause

Must be a Dallas thing. It does get damn hot here. Surprised I haven't seen ya around gmbbs, although Dallas is a big area. I am in Northeast Dallas, near Murphy, Sachse, Wylie, etc..

StickMon · 09-13-2013, 03:00 PM

Well, I found the A/C drain. You might be able to reinstall it, if you have long tricky fingers.
I can't see much of the bulb end, but I can feel it laying under the car, feet pointed toward the front, reaching around the right side of the trans.
About 6 inches fore of the trans mounts; about 2 inches fore of a connector (possibly the speedo).
I'm pointing to the general area in the first pic. Pardon the blurriness.

Sure enough, the nozzle end is next to the guibo and points directly at the right side trans mount.
There's a tab on the side of the nozzle that sits over one of the sound absorber studs, and has a plastic nut over it.
You should be able to look up the right side and see a stud, probably with a missing nut, to the right side of the guibo.
Pics 3 and 4 show it from a couple of angles.
Now I have to figure out how to attach an extension hose.

Name: Photo-0001.jpg
Views: 370
Size: 33.3 KB

Name: Photo-0001.jpg
Views: 370
Size: 33.3 KB

Name: Photo-0002.jpg
Views: 368
Size: 36.6 KB

Name: Photo-0005.jpg
Views: 367
Size: 23.4 KB

Name: Photo-0006.jpg
Views: 364
Size: 27.8 KB

StickMon · 09-13-2013, 09:02 PM

Used 5/16" I.D. Fuel Injection Hose from Pep Boys.
Decided not to put Fire Sleeve over it. If the speedo cable can take the heat, the hose can.
Used a spring steel hose clamp, a couple of angle brackets, and a binder clip to clamp it to the trans brace.
I think it'll hold.

Name: Photo-0001.jpg
Views: 287
Size: 56.9 KB

Name: Photo-0001.jpg
Views: 287
Size: 56.9 KB

Name: Photo-0006.jpg
Views: 331
Size: 23.8 KB

Name: Photo-0002.jpg
Views: 287
Size: 32.8 KB

thelinux · 09-18-2013, 03:16 AM

Quote:

Originally Posted by StickMon

Well, I found the A/C drain. You might be able to reinstall it, if you have long tricky fingers.
I can't see much of the bulb end, but I can feel it laying under the car, feet pointed toward the front, reaching around the right side of the trans.
About 6 inches fore of the trans mounts; about 2 inches fore of a connector (possibly the speedo).
I'm pointing to the general area in the first pic. Pardon the blurriness.

Sure enough, the nozzle end is next to the guibo and points directly at the right side trans mount.
There's a tab on the side of the nozzle that sits over one of the sound absorber studs, and has a plastic nut over it.
You should be able to look up the right side and see a stud, probably with a missing nut, to the right side of the guibo.
Pics 3 and 4 show it from a couple of angles.
Now I have to figure out how to attach an extension hose.

Attachment 912742

Attachment 912743

Attachment 912744

Attachment 912745

Thanks! I have small hands so I will see if I can put it back. so this s on the passenger side of transmission right?

StickMon · 09-18-2013, 11:14 AM

Yes.
The "bulb" end goes dead center into the top of the tunnel, with the "spigot" pointing rearward toward the passenger side.

msh441 · 10-19-2013, 10:02 PM

Great timing!

I JUST installed a set of black UUC mounts with cups. Set had been in the box for about a year.

Cups on the bottom, as they were notched, and seemed to fit better against the bracket, than the transmission (seemed like the cup didn't want to sit flush on the transmission's mourning face & may have required some filing/machining on a cup edge). Now I believe function is fundamentally the same whether they're on the top or bottom... but I see one issue with the way I have mine: potential fluid collection. Running the car with the defroster pumping yesterday had AC condensation dumping out over the bracket.

Looks like I get the fun job of getting the car back up and AT LEAST re-routing he drain. Ugh! PITA!!!

Anyone have any examples of the black ones deteriorating? Just curious. I'm 99% sure mine are poly, not the older neoprene rubber.

thelinux · 10-20-2013, 12:14 AM

finally, I got under my car today but could not find that stud. been looking for this for 3 hours but no luck. :-(

StickMon · 10-20-2013, 12:49 AM

Did you push on the heat shield in the tunnel and feel for a lump?
With the nut off, the heat shield may have slumped and swallowed it.

Then again, it may have broken off.
I can't imagine how, but it would explain why the duct fell off.

thelinux · 10-20-2013, 03:26 AM

do i have to remove transmission mount to access it? i looked around the right side of the mount for hours but no clue. i removed a heat shield near this area but still.....o

StickMon · 10-20-2013, 06:04 PM

Then it's probably broken off.
The hole in the heat shield has to still be there.
Maybe you can put a screw through it with big washers on each side, and a nut to hold it in place forming a new stud.

You should be able to find the exact location by trying to fit the duct back in, and see where the tab ends up.

thelinux · 10-23-2013, 10:30 PM

strangely, I did not see any speedsensor wire like shown in your pick. mine is 3.0si, so maybe mine is located at a different location?

what do I have to take off to see where the larger side of hose goes? transmission mount? exhaust pipe?

I did not see any broken stud either. Maybe I was looking at wrong place?
I mostly looked around of passenger side tranny mount. Even used inspection mirror but no luck.

could you elaborate more where I have to look?
Thanks.

Quote:

Originally Posted by StickMon

Then it's probably broken off.
The hole in the heat shield has to still be there.
Maybe you can put a screw through it with big washers on each side, and a nut to hold it in place forming a new stud.

You should be able to find the exact location by trying to fit the duct back in, and see where the tab ends up.

StickMon · 10-24-2013, 02:19 PM

Yes, the speed sensor will be in a different place, so not good for reference.
The hole for the larger end is in the center of the tunnel, about over the top center of the trans.
I didn't take anything off. I could feel the big end of the hose just well enough to make sure it was seated.
The small end goes rearward along the passenger side of the tunnel.

thelinux · 10-25-2013, 05:25 AM

Quote:

Originally Posted by StickMon

Yes, the speed sensor will be in a different place, so not good for reference.
The hole for the larger end is in the center of the tunnel, about over the top center of the trans.
I didn't take anything off. I could feel the big end of the hose just well enough to make sure it was seated.
The small end goes rearward along the passenger side of the tunnel.

What tunnel you mean? the recessed under cover where exhaust pipe goes?

GuidoK · 10-25-2013, 12:02 PM

This guy had the same problems on his m3:
http://www.m3forum.net/m3forum/showthread.php?t=336026
So it's more common.

Clearly the steel bolts are relative loosly 'glued' in the polyurethane (which acts as it's own glue I think).

The strange thing is: UUC states that the engine mounts have a certain construction, that it uses "a bonded end plate plus an inner plate embedded in the urethane".

On this picture it says 'generation 2', but clearly your mount doesn't have that.
So maybe the newer mounts don't have this problem (or it's simply not true

)

BTW I use standard (generic) rubber anti vibration mounts (40x30xm8) which have harder rubber than the standard bmw mounts (and cost next to nothing...)

StickMon · 10-25-2013, 04:05 PM

Quote:

Originally Posted by thelinux

What tunnel you mean? the recessed under cover where exhaust pipe goes?

The tunnel down the center of the car that the transmission lives in.

thelinux · 10-26-2013, 03:20 PM

Quote:

Originally Posted by StickMon

The tunnel down the center of the car that the transmission lives in.

Ok. Thanks!

msh441 · 10-26-2013, 10:41 PM

So a few things you can certainly derive from this thread:

-AC condensation drains onto transmission mounts in the Z4M... and seems to be bad for some polyurethane.

-To date, only UUC Red poly mounts are depicted here (and on the M3 board) turning to mush.

-The mounts that have deteriorated clearly are NOT the "Gen II" hardware UUC suggests is inside ALL their poly mounts (black or red). *Not that the different design would help much IMO if the poly simply turns to mush from the AC condensation, though*

Again, I'd be interested in seeing if any black UUC poly mounts are doing the same. Also any evidence of the "Gen II" design in a black or red UUC Trans mount. I know I bought mine when the newer design was advertised on their site. I would be a bit miffed if I ordered directly from UUC and got something that was not engineered as depicted.

StickMon · 10-26-2013, 11:26 PM

Quote:

Originally Posted by msh441

So a few things you can certainly derive from this thread ...

And I would add that it was pretty lame of BMW to drain the AC from way up in the tunnel, right over the mount.

msh441 · 10-27-2013, 12:25 AM

Quote:

Originally Posted by StickMon

Quote:

Originally Posted by msh441

So a few things you can certainly derive from this thread ...

And I would add that it was pretty lame of BMW to drain the AC from way up in the tunnel, right over the mount.

Yeah that is weird design decision, for sure. Living in Washington, not too often I'm running the AC. After seeing this thread, I cranked up the defroster one morning to get an idea how the condensation is drained (and specifically where). It absolutely pours out directly onto that bracket and dumps over the bushing in question. Crates only some surface rust on the stuck bushing... But still: how hard to route a proper drain tube!?! Absurd!

GuidoK · 10-27-2013, 09:13 AM

Quote:

Originally Posted by msh441

*Not that the different design would help much IMO if the poly simply turns to mush from the AC condensation, though*

Does it do that? The only things I can see is that the bonding between the polyurethane and the steel looses it adhesion (probably due to corrosion).
And that there was some kind of fungus/bacterial growth.
I couldn't make out that the polyurethane itself was falling apart.

Still rerouting the ac line is a good idea imho. (and contact uuc with this problem; they might want to fix it to retain their good name

)

StickMon · 10-27-2013, 02:54 PM

Quote:

Originally Posted by msh441

... But still: how hard to route a proper drain tube!?! Absurd!

See posts #25 and #26.
It's a little Rubish, but it does what it has to.

09-13-2013, 03:00 PM	#25
StickMon My other car is on Mars 636 Rep 3,124 Posts Drives: 2006 MR Join Date: Feb 2011 Location: Lo-Cal iTrader: (1)	Well, I found the A/C drain. You might be able to reinstall it, if you have long tricky fingers. I can't see much of the bulb end, but I can feel it laying under the car, feet pointed toward the front, reaching around the right side of the trans. About 6 inches fore of the trans mounts; about 2 inches fore of a connector (possibly the speedo). I'm pointing to the general area in the first pic. Pardon the blurriness. Sure enough, the nozzle end is next to the guibo and points directly at the right side trans mount. There's a tab on the side of the nozzle that sits over one of the sound absorber studs, and has a plastic nut over it. You should be able to look up the right side and see a stud, probably with a missing nut, to the right side of the guibo. Pics 3 and 4 show it from a couple of angles. Now I have to figure out how to attach an extension hose. __________________ Warning: May contain traces of nuts.
	Appreciate 0 Quote

09-13-2013, 09:02 PM	#26
StickMon My other car is on Mars 636 Rep 3,124 Posts Drives: 2006 MR Join Date: Feb 2011 Location: Lo-Cal iTrader: (1)	Well, it's a little less hokey Used 5/16" I.D. Fuel Injection Hose from Pep Boys. Decided not to put Fire Sleeve over it. If the speedo cable can take the heat, the hose can. Used a spring steel hose clamp, a couple of angle brackets, and a binder clip to clamp it to the trans brace. I think it'll hold. __________________ Warning: May contain traces of nuts. Last edited by StickMon; 09-20-2013 at 03:12 PM..
	Appreciate 0 Quote

09-18-2013, 11:14 AM	#28
StickMon My other car is on Mars 636 Rep 3,124 Posts Drives: 2006 MR Join Date: Feb 2011 Location: Lo-Cal iTrader: (1)	Yes. The "bulb" end goes dead center into the top of the tunnel, with the "spigot" pointing rearward toward the passenger side. __________________ Warning: May contain traces of nuts.
	Appreciate 0 Quote

10-19-2013, 10:02 PM	#29
msh441 Second Lieutenant 17 Rep 219 Posts Drives: 2007 BMW Z4 M Coupe Join Date: Nov 2011 Location: Pacific Northwest iTrader: (1) Garage List 2000 Volve S70 se [0.00] 2000 Triumph Dayton ... [0.00] 2007 Husqvarna TE250 [0.00] 2002 Ducati Monster ... [0.00] 2007 BMW [0.00]	Great timing! I JUST installed a set of black UUC mounts with cups. Set had been in the box for about a year. Cups on the bottom, as they were notched, and seemed to fit better against the bracket, than the transmission (seemed like the cup didn't want to sit flush on the transmission's mourning face & may have required some filing/machining on a cup edge). Now I believe function is fundamentally the same whether they're on the top or bottom... but I see one issue with the way I have mine: potential fluid collection. Running the car with the defroster pumping yesterday had AC condensation dumping out over the bracket. Looks like I get the fun job of getting the car back up and AT LEAST re-routing he drain. Ugh! PITA!!! Anyone have any examples of the black ones deteriorating? Just curious. I'm 99% sure mine are poly, not the older neoprene rubber.
	Appreciate 0 Quote

10-20-2013, 12:14 AM	#30
thelinux Private First Class 14 Rep 155 Posts Drives: 2008 Z4 3si Join Date: Feb 2013 Location: Irvine, CA iTrader: (0)	finally, I got under my car today but could not find that stud. been looking for this for 3 hours but no luck. :-(
	Appreciate 0 Quote

10-20-2013, 12:49 AM	#31
StickMon My other car is on Mars 636 Rep 3,124 Posts Drives: 2006 MR Join Date: Feb 2011 Location: Lo-Cal iTrader: (1)	Did you push on the heat shield in the tunnel and feel for a lump? With the nut off, the heat shield may have slumped and swallowed it. Then again, it may have broken off. I can't imagine how, but it would explain why the duct fell off. __________________ Warning: May contain traces of nuts.
	Appreciate 0 Quote

10-20-2013, 03:26 AM	#32
thelinux Private First Class 14 Rep 155 Posts Drives: 2008 Z4 3si Join Date: Feb 2013 Location: Irvine, CA iTrader: (0)	do i have to remove transmission mount to access it? i looked around the right side of the mount for hours but no clue. i removed a heat shield near this area but still.....o
	Appreciate 0 Quote

10-20-2013, 06:04 PM	#33
StickMon My other car is on Mars 636 Rep 3,124 Posts Drives: 2006 MR Join Date: Feb 2011 Location: Lo-Cal iTrader: (1)	Then it's probably broken off. The hole in the heat shield has to still be there. Maybe you can put a screw through it with big washers on each side, and a nut to hold it in place forming a new stud. You should be able to find the exact location by trying to fit the duct back in, and see where the tab ends up. __________________ Warning: May contain traces of nuts.
	Appreciate 0 Quote

10-24-2013, 02:19 PM	#35
StickMon My other car is on Mars 636 Rep 3,124 Posts Drives: 2006 MR Join Date: Feb 2011 Location: Lo-Cal iTrader: (1)	Yes, the speed sensor will be in a different place, so not good for reference. The hole for the larger end is in the center of the tunnel, about over the top center of the trans. I didn't take anything off. I could feel the big end of the hose just well enough to make sure it was seated. The small end goes rearward along the passenger side of the tunnel. __________________ Warning: May contain traces of nuts.
	Appreciate 0 Quote

10-25-2013, 12:02 PM	#37
GuidoK #buildnotbought 10695 Rep 4,868 Posts Drives: Z4 3.0i ESS TS2+ Join Date: Jul 2012 Location: Tinkering in the garage iTrader: (0)	This guy had the same problems on his m3: http://www.m3forum.net/m3forum/showthread.php?t=336026 So it's more common. Clearly the steel bolts are relative loosly 'glued' in the polyurethane (which acts as it's own glue I think). The strange thing is: UUC states that the engine mounts have a certain construction, that it uses "a bonded end plate plus an inner plate embedded in the urethane". On this picture it says 'generation 2', but clearly your mount doesn't have that. So maybe the newer mounts don't have this problem (or it's simply not true ) BTW I use standard (generic) rubber anti vibration mounts (40x30xm8) which have harder rubber than the standard bmw mounts (and cost next to nothing...) __________________ Z4 3.0i \| ESS TS2+ supercharger \| Quaife ATB LSD \| Brembo/BMW performance BBK front/rear \| Schrick FI cams \| Schmiedmann headers+cats \| Powerflex/strongflex PU bushings \| Vibra-technics engine mounts \| H&R anti rollbars \| KW V3 coilovers/KW camber plates \| Sachs race engineering clutch \| tons of custom sh#t Last edited by GuidoK; 10-25-2013 at 12:13 PM..
	Appreciate 0 Quote

10-26-2013, 10:41 PM	#40
msh441 Second Lieutenant 17 Rep 219 Posts Drives: 2007 BMW Z4 M Coupe Join Date: Nov 2011 Location: Pacific Northwest iTrader: (1) Garage List 2000 Volve S70 se [0.00] 2000 Triumph Dayton ... [0.00] 2007 Husqvarna TE250 [0.00] 2002 Ducati Monster ... [0.00] 2007 BMW [0.00]	So a few things you can certainly derive from this thread: -AC condensation drains onto transmission mounts in the Z4M... and seems to be bad for some polyurethane. -To date, only UUC Red poly mounts are depicted here (and on the M3 board) turning to mush. -The mounts that have deteriorated clearly are NOT the "Gen II" hardware UUC suggests is inside ALL their poly mounts (black or red). Not that the different design would help much IMO if the poly simply turns to mush from the AC condensation, though Again, I'd be interested in seeing if any black UUC poly mounts are doing the same. Also any evidence of the "Gen II" design in a black or red UUC Trans mount. I know I bought mine when the newer design was advertised on their site. I would be a bit miffed if I ordered directly from UUC and got something that was not engineered as depicted.
	Appreciate 0 Quote