New vacuum lines 3 or 4 mm

Odan.be · 07-09-2015, 07:10 AM

What to use best instead of 3.5mm oem lines.
3 or 4mm. Here in belgium i cant seem’to find 3.5 mm.

The1ontop · 07-09-2015, 07:19 AM

4 will work just fine

DR-JEKL · 07-09-2015, 08:45 AM

yes can confirm 4mm works fine, thats all i could find in australia also

Mike@N54Tuning.com · 07-09-2015, 09:05 AM

Quote:

Originally Posted by The1ontop

4 will work just fine

+1

Mike

blackturbo · 07-09-2015, 12:06 PM

4mm works fine. I just recently replaced mine

Peshki19 · 07-09-2015, 01:21 PM

I though stock was 3mm, any how looks like 4mm works too

Blaster400 · 07-09-2015, 01:50 PM

Quote:

Originally Posted by Peshki19

I though stock was 3mm, any how looks like 4mm works too

Stock is 3.5mm. Definitely go with 4mm instead of 3mm if those are the only two choices.

Odan.be · 07-09-2015, 02:04 PM

well , thx for the advise.
I bought me some generic 4 mm black rubber hoses from a car shop around the corner.
4 euro / m. OEM rubber hoses where 12 euro/m .
Thx !

Peshki19 · 07-09-2015, 04:09 PM

Quote:

Originally Posted by Blaster400

Stock is 3.5mm. Definitely go with 4mm instead of 3mm if those are the only two choices.

Thanks!

I'll keep that in mind. I almost ordered some 3 mm.

Stucks · 07-09-2015, 05:00 PM

4mm, indeed.

335NJ · 07-09-2015, 10:41 PM

Verocious Motorsports has 3.5mm line, FWIW.

"Platinum cured" or something like that, and it's rated for high-heat applications so it should run great under the hood. I have it and it's done just fine.

Odan.be · 07-12-2015, 01:38 AM

@335NJ I know, but I live in Belgium and paying import duties and shipping that cost more as the actual vacuumlines itself is a bit over the top.
I just gonna buy OEM braided ones , like the ones that run to the waste gates.

Thx for all the info guys !

Mayuri Krab · 07-13-2015, 09:27 AM

I used some generic 4mm hoses and seem to work just fine.

Icarium · 07-14-2015, 02:05 AM

I'm looking at replacing mine too. Just wondering if anyone bothered placing hose clamps on the silicone lines after? I've seen a few pics where people don't.

Odan.be · 07-14-2015, 05:56 AM

hose clamps on 4mm lines ?
OEM is not even with hose clamps?
If the fitting is good, it is tight enough to not have leaks

Mayuri Krab · 07-14-2015, 09:02 AM

Don't think it is necessary, not even OEM uses clamps, if you are afraid of (possible) leaks, just get the geninue OEM hoses from ECS.

Icarium · 07-14-2015, 01:10 PM

Thanks, just wanted to make sure. I saw the OEM had none so I was leaning that way

07-09-2015, 07:10 AM	#1
Odan.be Private First Class 26 Rep 84 Posts Drives: Bmw E91 3351 Join Date: Mar 2014 Location: Belgium iTrader: (0)	New vacuum lines 3 or 4 mm What to use best instead of 3.5mm oem lines. 3 or 4mm. Here in belgium i cant seem’to find 3.5 mm.
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07-09-2015, 07:19 AM	#2
The1ontop Second Lieutenant 12 Rep 228 Posts Drives: 2007 335i E92 Join Date: Nov 2013 Location: Maryland iTrader: (0)	4 will work just fine
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07-09-2015, 08:45 AM	#3
DR-JEKL Major General 909 Rep 6,285 Posts Drives: Space Grey E92 335i 6MT Join Date: Jul 2012 Location: Newcastle Ozstraylia iTrader: (3)	yes can confirm 4mm works fine, thats all i could find in australia also
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07-09-2015, 12:06 PM	#5
blackturbo Captain 59 Rep 645 Posts Drives: 335i Join Date: Jul 2013 Location: vancouver iTrader: (1)	4mm works fine. I just recently replaced mine
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07-09-2015, 01:21 PM	#6
Peshki19 Enlisted Member 9 Rep 32 Posts Drives: E92 xDrive 6AT Join Date: Mar 2015 Location: in the 201 iTrader: (0)	I though stock was 3mm, any how looks like 4mm works too
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07-09-2015, 02:04 PM	#8
Odan.be Private First Class 26 Rep 84 Posts Drives: Bmw E91 3351 Join Date: Mar 2014 Location: Belgium iTrader: (0)	well , thx for the advise. I bought me some generic 4 mm black rubber hoses from a car shop around the corner. 4 euro / m. OEM rubber hoses where 12 euro/m . Thx !
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07-09-2015, 05:00 PM	#10
Stucks Lieutenant Colonel 180 Rep 1,911 Posts Drives: 2017 F30 340i Xdrive Join Date: Oct 2010 Location: Montgomery County, MD iTrader: (12)	4mm, indeed. __________________ Current: 2017 F30 340i xdrive Previous: 2008 e92 335i coupe: RB turbos, mach 116 race fuel, methanol, alot of boost. Previous: 2003 Honda Accord V6 coupe: AEM V2, zex 75 wet shot (sold)
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07-09-2015, 10:41 PM	#11
335NJ Colonel 535 Rep 2,872 Posts Drives: 2008 335i 6MT E90 Join Date: Feb 2014 Location: NJ/Philadelphia Suburbs iTrader: (1)	Verocious Motorsports has 3.5mm line, FWIW. "Platinum cured" or something like that, and it's rated for high-heat applications so it should run great under the hood. I have it and it's done just fine. __________________ *BSM E90 6MT*-JB4 G5 ISO-BMS DCI-Golf-Tee Mod-Hankook S1N2 Non-RFT-ER Chargepipe/TiAL BOV-E40 blend-VRSF V2's-M3 CDV-MHD/JB4 FLASH-VRSF 5" STEPPED FMIC
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07-12-2015, 01:38 AM	#12
Odan.be Private First Class 26 Rep 84 Posts Drives: Bmw E91 3351 Join Date: Mar 2014 Location: Belgium iTrader: (0)	@335NJ I know, but I live in Belgium and paying import duties and shipping that cost more as the actual vacuumlines itself is a bit over the top. I just gonna buy OEM braided ones , like the ones that run to the waste gates. Thx for all the info guys !
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07-13-2015, 09:27 AM	#13
Mayuri Krab The Cheap Arse Asian 48 Rep 585 Posts Drives: E90 335i & R33 Skyline GTS-T Join Date: Jun 2013 Location: Perth, Australia iTrader: (0)	I used some generic 4mm hoses and seem to work just fine. __________________ 07 BMW E90 335i \|JB4 + MHD Backend Flash (Pump) \|AR Catless DPs\|ER CP + Forge DVs\|BMS DCIs + OCC\|RB PCV valve + cap\| 93 R33 Skyline GTS-T \|SAFC-II piggyback\|3" Turbo Back Exhaust + Highflow Cat\|FMIC\|Boost Tee\|Apexi POD\| Shitty Chinese spec tires = sideways action everywhere
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07-14-2015, 02:05 AM	#14
Icarium New Member 0 Rep 24 Posts Drives: 2008 E92 335xi Join Date: Apr 2015 Location: Vancouver iTrader: (0)	I'm looking at replacing mine too. Just wondering if anyone bothered placing hose clamps on the silicone lines after? I've seen a few pics where people don't.
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07-14-2015, 05:56 AM	#15
Odan.be Private First Class 26 Rep 84 Posts Drives: Bmw E91 3351 Join Date: Mar 2014 Location: Belgium iTrader: (0)	hose clamps on 4mm lines ? OEM is not even with hose clamps? If the fitting is good, it is tight enough to not have leaks
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07-14-2015, 09:02 AM	#16
Mayuri Krab The Cheap Arse Asian 48 Rep 585 Posts Drives: E90 335i & R33 Skyline GTS-T Join Date: Jun 2013 Location: Perth, Australia iTrader: (0)	Don't think it is necessary, not even OEM uses clamps, if you are afraid of (possible) leaks, just get the geninue OEM hoses from ECS. __________________ 07 BMW E90 335i \|JB4 + MHD Backend Flash (Pump) \|AR Catless DPs\|ER CP + Forge DVs\|BMS DCIs + OCC\|RB PCV valve + cap\| 93 R33 Skyline GTS-T \|SAFC-II piggyback\|3" Turbo Back Exhaust + Highflow Cat\|FMIC\|Boost Tee\|Apexi POD\| Shitty Chinese spec tires = sideways action everywhere
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07-14-2015, 01:10 PM	#17
Icarium New Member 0 Rep 24 Posts Drives: 2008 E92 335xi Join Date: Apr 2015 Location: Vancouver iTrader: (0)	Thanks, just wanted to make sure. I saw the OEM had none so I was leaning that way
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