Help with BMS OCC install

froop · 09-08-2012, 11:04 PM

Hi everyone,

I'm in the middle of installing the BMS OCC but I'm having trouble getting the U-bend hose over the OEM nipple. Took me an hour or so but finally got it on however, the hose is now only about 2mm past the catch and I can't get it any further in. In the BMS DIY instructions they've pushed it in maybe 5-6mm past the catch.

I'm wondering if this pipe holds a lot of pressure during engine operation and if I don't push it further in, do I risk it popping off whilst driving?

Or, is it ok to leave it as is and just complete the rest of the install?

I've tried heating, pushing, pulling, bending, twisting etc and I'm all tired out =(

If someone with a bit of experience in this could give me a bit of advice I'd really appreciate it.

Thanks

yawn · 09-09-2012, 12:13 AM

2mm doesn't sound like much at all. I did manage to get mine seated quite a bit more than that. Photos?

BMW86 · 09-09-2012, 12:30 AM

Pics?

froop · 09-09-2012, 12:32 AM

Quote:

Originally Posted by sharkatron

2mm doesn't sound like much at all. I did manage to get mine seated quite a bit more than that. Photos?

Hi sharkatron,

Thanks for much for the reply. Here are 2 photos that I just took.

It's in a 'decent' amount but there's definitely more room that it could be pushed in. I just can't seem to get it in any further no matter what I do

The picture in the BMS install instructions show the bottom of the U-bend pipe pushed pretty much right up to the bend in the plastic valve. I'm worried that if I keep pushing/pulling I might break the valve connection to the pipe below because it's plastic. I've heard a few unnerving creaks from the plastic already.

If the PCV pipe doesn't hold too much pressure I'm thinking that it might be ok because the engine cover should be pressing the U-bend right up against the firewall. But yeah, any feedback would be much appreciated.

pavo335 · 09-09-2012, 12:40 AM

Did you warm up the hose?

froop · 09-09-2012, 12:42 AM

Quote:

Originally Posted by pavo335

Did you warm up the hose?

Yeah I used a hair drier until it was pretty hot to the touch. That's how I got it on as far as I did.

Unfortunately I can't seem to get it in any further and I'm worried about breaking the nipple if I try too much harder.

pavo335 · 09-09-2012, 01:02 AM

Quote:

Originally Posted by froop

Quote:

Originally Posted by pavo335

Did you warm up the hose?

Yeah I used a hair drier until it was pretty hot to the touch. That's how I got it on as far as I did.

Unfortunately I can't seem to get it in any further and I'm worried about breaking the nipple if I try too much harder.

Did you take the connector off? Or did you leave it on and try to push the hose over? I took mine off and just twisted and it went all the way

froop · 09-09-2012, 01:06 AM

Quote:

Originally Posted by pavo335

Quote:

Originally Posted by froop

Quote:

Originally Posted by pavo335

Did you warm up the hose?

Yeah I used a hair drier until it was pretty hot to the touch. That's how I got it on as far as I did.

Unfortunately I can't seem to get it in any further and I'm worried about breaking the nipple if I try too much harder.

Did you take the connector off? Or did you leave it on and try to push the hose over? I took mine off and just twisted and it went all the way

That's a good idea. The instructions didn't say you could pull it off and do it that way. I might see if I can pull it off now. No idea how though haha.

UR25IO · 09-09-2012, 01:33 AM

USE HAIR SPRAY MATE!!!! goes on wet and dry off like glue

yawn · 09-09-2012, 01:36 AM

Hi froop,

I think pavo335 is right - from memory, the tube should just twist straight in - there shouldn't be any connectors in the way. You're nearly there - hard part is always getting the clips off the OEM piping

yawn · 09-09-2012, 01:37 AM

Quote:

Originally Posted by UR25IO

USE HAIR SPRAY MATE!!!! goes on wet and dry off like glue

Does the "like glue" aspect also mean it's irreversible?

UR25IO · 09-09-2012, 01:46 AM

Quote:

Originally Posted by sharkatron

Does the "like glue" aspect also mean it's irreversible?

sure is.. just stick a small screw driver in spray the little opening with water
and it side off like wet lube LOL

yawn · 09-09-2012, 01:49 AM

Quote:

Originally Posted by UR25IO

sure is.. just stick a small screw driver in spray the little opening with water
and it side off like wet lube LOL

You seem to have experience, I'll give you that

david.orr · 09-09-2012, 01:52 AM

Quote:

Originally Posted by pavo335

Quote:

Originally Posted by froop

Quote:

Originally Posted by pavo335

Did you warm up the hose?

Yeah I used a hair drier until it was pretty hot to the touch. That's how I got it on as far as I did.

Unfortunately I can't seem to get it in any further and I'm worried about breaking the nipple if I try too much harder.

Did you take the connector off? Or did you leave it on and try to push the hose over? I took mine off and just twisted and it went all the way

Yep Peter unclipped the connector when he did mine.

UR25IO · 09-09-2012, 01:52 AM

Quote:

Originally Posted by sharkatron

You seem to have experience, I'll give you that

hahaha cheers mate!

Kiwi Peter · 09-09-2012, 01:58 AM

There seems to be two different hose sizes or maybe poor quality control

as about 50% of the OCC i have fitted have been a good fit, the hose will just push on with out to much effort. But the other 50% i have had to remove the plastic fitting and fit the hose with the help of a bench vice and some oil as the hose is about 2mm smaller, be careful that you don't brake the plastic clipping system. Just be careful

froop · 09-09-2012, 02:55 AM

Thanks for all of the help guys!

I ended up leaving it as is and installing the engine cover back on. It seems pretty tight and with the 2 hoses wedged up into the firewall behind the engine cover I don't think there'll be any way that it can come off.

If it does...well suck to be me

Also installed the M3 strut tower brace while I was there.

One thing, if you're planning on doing the install for for our cars it comes with different screws for the strut bars in addition to a different center mount compared to the E9x kits. 2 13mm hex bolts and 2 allen bolts for each side.

DIYs say to torque each bolt to 25ft/lb but it is impossible to torque the allen bolts to that without stripping the inside. Ask me how I know

Also, once you have it installed, it's pretty impossible to put the cowl back on due to the new strut brace and bolts pressing up on the underside of the cowl which means you can't get the center clip to go under the rubber seal. I don't think that the OCC mount clip on the strut brace helps either...

If you push really really hard, the clip just snaps right off and then the cowl fits fine. Ask me how I know

MrBlonde · 09-09-2012, 02:56 AM

Peter is used to being able to easily slide small things in. He's not as practiced with larger diameters and tighter fits.

yawn · 09-09-2012, 03:16 AM

Hey froop,

Just to check with you, were you able to get the hosing against the rear firewall seated without pressing the u-bend slightly together? Just that with mine, there was a little bit of pressing on the u-bend, which obviously means a slight reduction on the diameter of the tubing, possible restriction of airflow. It's not completely restricted, but slight. I've had it on for 4-5months now no issues, but wondering if there are any longterm effects?

Kiwi Peter · 09-09-2012, 03:22 AM

Quote:

Originally Posted by MrBlonde

Peter is used to being able to easily slide small things in. He's not as practiced with larger diameters and tighter fits.

Get a hair cut you old fart ::

MrBlonde · 09-09-2012, 03:31 AM

Quote:

Originally Posted by skycat

Get a hair cut you old fart ::

Hee hee hee!

Get out of my head .. I keep thinking about 1Ms now.

froop · 09-09-2012, 03:33 AM

Quote:

Originally Posted by sharkatron

Hey froop,

Just to check with you, were you able to get the hosing against the rear firewall seated without pressing the u-bend slightly together? Just that with mine, there was a little bit of pressing on the u-bend, which obviously means a slight reduction on the diameter of the tubing, possible restriction of airflow. It's not completely restricted, but slight. I've had it on for 4-5months now no issues, but wondering if there are any longterm effects?

Hey shark,

The straight and the u-bend pipe are kind of pressed together up against the firewall. I had a quick look and feel of the piping before I re-installed the cowl and it didn't look like it was squashed much.

I just took it for a very quick drive and everything seems ok. I can seem to hear the bypass valves a lot more clearly when I let off the accelerator but I have no idea if that's new or just because I didn't have the radio turned on.

09-08-2012, 11:04 PM	#1
froop Colonel 171 Rep 2,682 Posts Drives: 08 AW 6MT E82 Join Date: Jul 2012 Location: Sydney, Australia iTrader: (3)	Help with BMS OCC install Hi everyone, I'm in the middle of installing the BMS OCC but I'm having trouble getting the U-bend hose over the OEM nipple. Took me an hour or so but finally got it on however, the hose is now only about 2mm past the catch and I can't get it any further in. In the BMS DIY instructions they've pushed it in maybe 5-6mm past the catch. I'm wondering if this pipe holds a lot of pressure during engine operation and if I don't push it further in, do I risk it popping off whilst driving? Or, is it ok to leave it as is and just complete the rest of the install? I've tried heating, pushing, pulling, bending, twisting etc and I'm all tired out =( If someone with a bit of experience in this could give me a bit of advice I'd really appreciate it. Thanks __________________ froop's AW 135i Build Thread
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09-09-2012, 12:13 AM	#2
yawn Lieutenant 57 Rep 552 Posts Drives: M2 Competition Join Date: Mar 2012 Location: Home iTrader: (0)	2mm doesn't sound like much at all. I did manage to get mine seated quite a bit more than that. Photos?
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09-09-2012, 12:30 AM	#3
BMW86 Major General 398 Rep 9,156 Posts Drives: RS3 Sedan / Macan S Join Date: Jul 2008 Location: Australia iTrader: (0)	Pics?
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09-09-2012, 12:40 AM	#5
pavo335 Banned 69 Rep 2,934 Posts Drives: 3.5 wheeler Join Date: Feb 2012 Location: sydney iTrader: (0)	Did you warm up the hose?
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09-09-2012, 01:33 AM	#9
UR25IO Captain 97 Rep 939 Posts Drives: 2011 BMW 135i M-SPORT DCT Join Date: Nov 2011 Location: SYDNEY AUSTRAILIA iTrader: (1)	USE HAIR SPRAY MATE!!!! goes on wet and dry off like glue
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09-09-2012, 01:36 AM	#10
yawn Lieutenant 57 Rep 552 Posts Drives: M2 Competition Join Date: Mar 2012 Location: Home iTrader: (0)	Hi froop, I think pavo335 is right - from memory, the tube should just twist straight in - there shouldn't be any connectors in the way. You're nearly there - hard part is always getting the clips off the OEM piping
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09-09-2012, 01:58 AM	#16
Kiwi Peter 162 Rep 1,460 Posts Drives: E92 M3 2012 Edition 500 Join Date: May 2011 Location: Cambridge, New Zealand iTrader: (0)	There seems to be two different hose sizes or maybe poor quality control as about 50% of the OCC i have fitted have been a good fit, the hose will just push on with out to much effort. But the other 50% i have had to remove the plastic fitting and fit the hose with the help of a bench vice and some oil as the hose is about 2mm smaller, be careful that you don't brake the plastic clipping system. Just be careful
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09-09-2012, 02:55 AM	#17
froop Colonel 171 Rep 2,682 Posts Drives: 08 AW 6MT E82 Join Date: Jul 2012 Location: Sydney, Australia iTrader: (3)	Thanks for all of the help guys! I ended up leaving it as is and installing the engine cover back on. It seems pretty tight and with the 2 hoses wedged up into the firewall behind the engine cover I don't think there'll be any way that it can come off. If it does...well suck to be me Also installed the M3 strut tower brace while I was there. One thing, if you're planning on doing the install for for our cars it comes with different screws for the strut bars in addition to a different center mount compared to the E9x kits. 2 13mm hex bolts and 2 allen bolts for each side. DIYs say to torque each bolt to 25ft/lb but it is impossible to torque the allen bolts to that without stripping the inside. Ask me how I know Also, once you have it installed, it's pretty impossible to put the cowl back on due to the new strut brace and bolts pressing up on the underside of the cowl which means you can't get the center clip to go under the rubber seal. I don't think that the OCC mount clip on the strut brace helps either... If you push really really hard, the clip just snaps right off and then the cowl fits fine. Ask me how I know __________________ froop's AW 135i Build Thread
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09-09-2012, 02:56 AM	#18
MrBlonde Colonel 122 Rep 2,695 Posts Drives: Audi TTRS, M Coupe, 1299 Join Date: Jan 2008 Location: Merewether iTrader: (0)	Peter is used to being able to easily slide small things in. He's not as practiced with larger diameters and tighter fits. __________________ .-=[ Kenny ]=-. 1999 BMW M Coupe 10.775 @ 134.35 mph w/1.600 60' (Best 136.07 mph) 25th August 2004. +2010 X5 35D+ Check out the 1Addicts Drag Racing Standings and Drag Racing 101.
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09-09-2012, 03:16 AM	#19
yawn Lieutenant 57 Rep 552 Posts Drives: M2 Competition Join Date: Mar 2012 Location: Home iTrader: (0)	Hey froop, Just to check with you, were you able to get the hosing against the rear firewall seated without pressing the u-bend slightly together? Just that with mine, there was a little bit of pressing on the u-bend, which obviously means a slight reduction on the diameter of the tubing, possible restriction of airflow. It's not completely restricted, but slight. I've had it on for 4-5months now no issues, but wondering if there are any longterm effects?
	Appreciate 0 Quote