RB cap review and RB cap/Valve install

robc1976 · 08-10-2013, 04:14 AM

I already had the RB valve so why the hell not have the cap that goes with it. The plastic cap is a POS!! All I can say is the cap is a masterpiece like everything rob makes LOL!! I decided to do a install DIY also on both items because I get a lot of PMS about how to install it.

Want to add this to the tutorial, I used a regular clamp to get a good seal on the vent hose. There is also a thread below, big thanks to "ashmostro" for the idea!

http://www.e90post.com/forums/showthread.php?t=831992

Bme30 · 08-10-2013, 06:48 AM

Nice write up. Think I'm gonna pull the trigger on this!

ashmostro · 08-10-2013, 07:36 AM

ooOooOoooO pretttty!

good DIY!

I have a solution for the weak ass stock vent hose: Solution to loose vent hose

robc1976 · 08-10-2013, 11:19 AM

Quote:

Originally Posted by ashmostro

ooOooOoooO pretttty!

good DIY!

I have a solution for the weak ass stock vent hose: Solution to loose vent hose

Sweet! Doing this today! Great idea!

robc1976 · 08-10-2013, 11:20 AM

Quote:

Originally Posted by Bme30

Nice write up. Think I'm gonna pull the trigger on this!

Well worth it!

135Pats · 08-10-2013, 11:24 AM

Nice DIY as usual. About to order my valve cap from Mr. Beck after reading this. OEM design is fugly.

robc1976 · 08-10-2013, 11:29 AM

Quote:

Originally Posted by 135Pats

Nice DIY as usual. About to order my valve cap from Mr. Beck after reading this. OEM design is fugly.

You will love it, OEM sucks!

Hierlevelz · 08-10-2013, 11:42 AM

The cap was more of an aesthetic upgrade? What's the reason behind the valve upgrade? Reliability?

ashmostro · 08-10-2013, 11:45 AM

Stock valves have varying performance... some will allow too much blowby and accelerate intake tract mucking-up (technical term).

RB's valve in my car has essentially made my OCC unnecessary- it doesn't fill even slightly with oil now, even over several months.

robc1976 · 08-10-2013, 11:49 AM

Quote:

Originally Posted by Hierlevelz

The cap was more of an aesthetic upgrade? What's the reason behind the valve upgrade? Reliability?

OEM valve is weak and leaks wich is essentially is a boost leak wich also compromise the pcv system. The cap replaces OEM plastic POS wich usually is trashed taking off/servicing it. This cap allows for service to the valve.

robc1976 · 08-10-2013, 11:50 AM

Quote:

Originally Posted by ashmostro

Stock valves have varying performance... some will allow too much blowby and accelerate intake tract mucking-up (technical term).

RB's valve in my car has essentially made my OCC unnecessary- it doesn't fill even slightly with oil now, even over several months.

Very good point!

Hierlevelz · 08-10-2013, 11:51 AM

Quote:

Originally Posted by robc1976

OEM valve is weak and leaks wich is essentially is a boost leak wich also compromise the pcv system. The cap replaces OEM plastic POS wich usually is trashed taking off/servicing it. This cap allows for service to the valve.

What is the service interval for these valves? I'm at 27k miles now not sure if it's something I should be doing at this stage.

robc1976 · 08-10-2013, 11:58 AM

Quote:

Originally Posted by Hierlevelz

What is the service interval for these valves? I'm at 27k miles now not sure if it's something I should be doing at this stage.

that the thing, bmw doesn't even sell a valve as it is classified as not servicable. The only way to get a new one would be to get a entire valve cover....that is why the RB valve/cap is so awesome. You will Be amazed at the difference...OEM is such a weak POS lol! I Would get one now honestly.

Bme30 · 08-10-2013, 12:03 PM

I'm on the original. 07 with 48k miles. I think I'm due.

Rob@RBTurbo · 08-10-2013, 12:04 PM

Cool write up man, you always knock these out of the park!

If anyone else is interested it would be great. I made these for a few people who have contacted me over the years who have cracked or broken their cap. Fully expect it to be a low demand item, but something that can really save your a** when you need it.

Here is a thread I just made on them if anyone is interested:
http://www.e90post.com/forums/showthread.php?t=875547

Thanks,
Rob

robc1976 · 08-10-2013, 12:58 PM

Quote:

Originally Posted by Rob@RBTurbo

Cool write up man, you always knock these out of the park!

If anyone else is interested it would be great. I made these for a few people who have contacted me over the years who have cracked or broken their cap. Fully expect it to be a low demand item, but something that can really save your a** when you need it.

Here is a thread I just made on them if anyone is interested:
http://www.e90post.com/forums/showthread.php?t=875547

Thanks,
Rob

Such a quality piece, I would by this with the valve no question asked, makes install much easier and you can judge how tight the cap is on.

Great product

dfjaws · 08-10-2013, 03:19 PM

I'm still on my original one at 79k miles but my OCC has nothing at all in it. I'm guessing I got lucky and have a really well functioning OE valve but I think it's time for the RB one anyways.

robc1976 · 08-10-2013, 03:23 PM

Quote:

Originally Posted by dfjaws

I'm still on my original one at 79k miles but my OCC has nothing at all in it. I'm guessing I got lucky and have a really well functioning OE valve but I think it's time for the RB one anyways.

Yeah, OEM doesn't hold boost as well either.

robc1976 · 08-10-2013, 07:54 PM

Added step to this turorial, see pic 3 and big thanks to "ashmostro"

ashmostro · 08-10-2013, 07:56 PM

Woohoo royalties!

robc1976 · 08-10-2013, 08:00 PM

Quote:

Originally Posted by ashmostro

Woohoo royalties!

Its a great idea and a great thing to do, it is the little details like this that separate one car from another

you got royalties on all 3 forums!

135Pats · 08-10-2013, 08:03 PM

Just ordered the RB cap and clamped the check valve hose per Ashmostro's fix.

Thanks to all you guys for the improvements, the entire stock system is weaksauce.

08-10-2013, 04:14 AM	#1
robc1976 DIYER 614 Rep 5,521 Posts Drives: E90 335i Join Date: Mar 2012 Location: Illinois iTrader: (14)	RB cap review and RB cap/Valve install I already had the RB valve so why the hell not have the cap that goes with it. The plastic cap is a POS!! All I can say is the cap is a masterpiece like everything rob makes LOL!! I decided to do a install DIY also on both items because I get a lot of PMS about how to install it. Want to add this to the tutorial, I used a regular clamp to get a good seal on the vent hose. There is also a thread below, big thanks to "ashmostro" for the idea! http://www.e90post.com/forums/showthread.php?t=831992 __________________ JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295 Last edited by robc1976; 08-10-2013 at 07:53 PM..
	Appreciate 0 Tweet Quote

08-10-2013, 06:48 AM	#2
Bme30 Major 88 Rep 1,039 Posts Drives: 335i coupe Join Date: May 2010 Location: 'Merika' iTrader: (2) Garage List 2007 335i [0.00]	Nice write up. Think I'm gonna pull the trigger on this!
	Appreciate 0 Quote

08-10-2013, 07:36 AM	#3
ashmostro Brigadier General 1254 Rep 4,088 Posts Drives: 2020 M4cs \| 2022 M550i Join Date: Jan 2013 Location: Falls Church, VA iTrader: (27)	ooOooOoooO pretttty! good DIY! I have a solution for the weak ass stock vent hose: Solution to loose vent hose
	Appreciate 0 Quote

08-10-2013, 11:24 AM	#6
135Pats Major General 456 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	Nice DIY as usual. About to order my valve cap from Mr. Beck after reading this. OEM design is fugly. __________________ E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP F30 N55 XDrive EBII
	Appreciate 0 Quote

08-10-2013, 11:42 AM	#8
Hierlevelz Captain 76 Rep 916 Posts Drives: 11 AW E9X M Join Date: Dec 2011 Location: ENYC iTrader: (10)	The cap was more of an aesthetic upgrade? What's the reason behind the valve upgrade? Reliability?
	Appreciate 0 Quote

08-10-2013, 11:45 AM	#9
ashmostro Brigadier General 1254 Rep 4,088 Posts Drives: 2020 M4cs \| 2022 M550i Join Date: Jan 2013 Location: Falls Church, VA iTrader: (27)	Stock valves have varying performance... some will allow too much blowby and accelerate intake tract mucking-up (technical term). RB's valve in my car has essentially made my OCC unnecessary- it doesn't fill even slightly with oil now, even over several months.
	Appreciate 0 Quote

08-10-2013, 12:03 PM	#14
Bme30 Major 88 Rep 1,039 Posts Drives: 335i coupe Join Date: May 2010 Location: 'Merika' iTrader: (2) Garage List 2007 335i [0.00]	I'm on the original. 07 with 48k miles. I think I'm due.
	Appreciate 0 Quote

08-10-2013, 12:04 PM	#15
Rob@RBTurbo Lieutenant Colonel 387 Rep 1,571 Posts Drives: '08 335I AT, '14 M6 DCT Join Date: Jan 2008 Location: St. Louis, MO iTrader: (5)	Cool write up man, you always knock these out of the park! If anyone else is interested it would be great. I made these for a few people who have contacted me over the years who have cracked or broken their cap. Fully expect it to be a low demand item, but something that can really save your a** when you need it. Here is a thread I just made on them if anyone is interested: http://www.e90post.com/forums/showthread.php?t=875547 Thanks, Rob
	Appreciate 0 Quote

08-10-2013, 03:19 PM	#17
dfjaws Lieutenant 57 Rep 535 Posts Drives: E90 M3 / E86 M Coupe Join Date: Sep 2011 Location: Des Moines, IA iTrader: (5)	I'm still on my original one at 79k miles but my OCC has nothing at all in it. I'm guessing I got lucky and have a really well functioning OE valve but I think it's time for the RB one anyways. __________________
	Appreciate 0 Quote

08-10-2013, 07:54 PM	#19
robc1976 DIYER 614 Rep 5,521 Posts Drives: E90 335i Join Date: Mar 2012 Location: Illinois iTrader: (14)	Added step to this turorial, see pic 3 and big thanks to "ashmostro" __________________ JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
	Appreciate 0 Quote

08-10-2013, 07:56 PM	#20
ashmostro Brigadier General 1254 Rep 4,088 Posts Drives: 2020 M4cs \| 2022 M550i Join Date: Jan 2013 Location: Falls Church, VA iTrader: (27)	Woohoo royalties!
	Appreciate 0 Quote

08-10-2013, 08:03 PM	#22
135Pats Major General 456 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	Just ordered the RB cap and clamped the check valve hose per Ashmostro's fix. Thanks to all you guys for the improvements, the entire stock system is weaksauce.
	Appreciate 0 Quote