Silicone vacuum hose replacements from hose techniques

JohnLZ7W · 10-06-2006, 08:11 PM

This has come up a few times recently so I
checked the sizes of the hoses I used on
my car. I've sized them by eyeballing the size
of the stock part and matching with a silicone
replacement. In some cases I've used a smaller
size for a better fit. Note that some of the
hoses do have different inner diameters on each
end, like the DV line, I haven't done anything
to duplicate that. This all seems to work ok on
my car but YMMV.

As you can see I've used mainly the 3.5mm, 6mm
and 8mm. The 4mm was a bit too loose and it has
thinner walls than the 3.5mm hose so it's more
prone to collapse and pinching. I've replaced
the one time use clamps that held the factory
hoses with the supplied zip ties, including the
hoses that terminate under the intake manifold.
I've reused the squeeze clamps where I could.

Most of the factory hoses I could pull off after
getting a small screwdriver underneath to free
them but on some they were stuck on and I needed
to cut them off with a razor blade. It's actually
a pretty fun and inexpensive project.

(please excuse the crappy picture)

http://www.hosetechniques.com/catalo...l%20SVH%20Kits

TTempted · 10-06-2006, 08:37 PM

sounds like a cold-weather mod for me this winter!

Basttion · 10-06-2006, 08:59 PM

Would a stocker vary too much without the DV relo?

JohnLZ7W · 10-06-2006, 09:03 PM

coasTTal · 10-07-2006, 05:04 AM

GorTT · 10-07-2006, 07:01 AM

seriously, is 4' of 8mm enough to re-work?

MCPaudiTT - DEFCON 1 · 10-07-2006, 10:05 AM

JohnLZ7W · 10-07-2006, 10:39 AM

to replace and I've run out of the silicone stuff. However one of them is a longer coolant return line and I don't really need to replace that one (when it leaks, it'll be apparent

. If I hadn't done the coolant return lines on the left side of the engine I would have had enough for all of the vacuum lines.

JohnLZ7W · 10-07-2006, 10:39 AM

penguin101b · 10-07-2006, 11:01 AM

with a different supplier for silicon hose here which is a little less expensive.

How do you feel that 4mm was a bit too loose? Do you not feel comfortable using it because it is soo loose and thin? I wish this place had 3.5mm.

BTW thanks for the excellent illustration!

Take care,

10-06-2006, 08:11 PM	#1
JohnLZ7W AudiWorld Super User Account #: 5201 Join Date: May 2000 Posts: 21,133	Silicone vacuum hose replacements from hose techniques This has come up a few times recently so I checked the sizes of the hoses I used on my car. I've sized them by eyeballing the size of the stock part and matching with a silicone replacement. In some cases I've used a smaller size for a better fit. Note that some of the hoses do have different inner diameters on each end, like the DV line, I haven't done anything to duplicate that. This all seems to work ok on my car but YMMV. As you can see I've used mainly the 3.5mm, 6mm and 8mm. The 4mm was a bit too loose and it has thinner walls than the 3.5mm hose so it's more prone to collapse and pinching. I've replaced the one time use clamps that held the factory hoses with the supplied zip ties, including the hoses that terminate under the intake manifold. I've reused the squeeze clamps where I could. Most of the factory hoses I could pull off after getting a small screwdriver underneath to free them but on some they were stuck on and I needed to cut them off with a razor blade. It's actually a pretty fun and inexpensive project. (please excuse the crappy picture) http://www.hosetechniques.com/catalo...l%20SVH%20Kits __________________ John 225QC Aviator Grey/Ebony Cloth Road Trip 2007 blog and gallery. "I just want to drive. I don't want to stop doing this, at all, ever" - Richard Hammond "This is me breathing" - Martin Blank

10-06-2006, 08:37 PM	#2
TTempted Guest Account #: 56973 Join Date: Jun 2003 Posts: 4,146	wow, looks awesome sounds like a cold-weather mod for me this winter!

10-06-2006, 08:59 PM	#3
Basttion AudiWorld Super User Account #: 88983 Join Date: Mar 2005 Posts: 6,845	Wow, thanks! Would a stocker vary too much without the DV relo? __________________ Revo \| Phatnoise \| Auto Aesthetics \| HN Concepts \| OSIR \| 3.2 rear valance \| ECS \| H&R

10-06-2006, 09:03 PM	#4
JohnLZ7W AudiWorld Super User Account #: 5201 Join Date: May 2000 Posts: 21,133	You'd route the DV line differently but it should be the same diameter. __________________ John 225QC Aviator Grey/Ebony Cloth Road Trip 2007 blog and gallery. "I just want to drive. I don't want to stop doing this, at all, ever" - Richard Hammond "This is me breathing" - Martin Blank

10-07-2006, 05:04 AM	#5
coasTTal Senior Member Account #: 24437 Join Date: Aug 2001 Posts: 7,780	Thanks, Great Post - Any idea of the needed lenghts to get when ordering.? __________________

10-07-2006, 07:01 AM	#6
GorTT AudiWorld Super User Account #: 53277 Join Date: Mar 2003 Posts: 10,211	agreed - thanks, John! (is one decal enough, or should we get 2?) > seriously, is 4' of 8mm enough to re-work? __________________ 2001 FWD BMC CDA/MOFO/Samco TIP/Boost Machine/K04 Turbo/APR K04 software/P&P exhaust mani/Tectonics DP & High-Flow Cat/Milltek Cat-Back/Forge FMIC/Forge RS/SFS DV relo/EVOheatshield/Dahlback intake mani with a little custom plumbing ;-)/Adjustable FPR/Denso IK 22's/KMD pulley/Quaife LSD/Sachs Power Clutch/Autotech LW Flywheel///H&R 20f 25r/KW V1's/VF engine mounts/Cool-looking Powder-coated Valve Cover/Braille Lightweight Battery/MassDamper elective surgery ;-)/Neuspeed 28mm Rear/BBS RE 18x8/Mich 245/35 PS2's/Defcon's/H2S Sphericals ;-)/Wilwood Superlite 13" BBK F with some decent low-temp track pads - stops on a dime (no change, but a dollar isn't what it used to be, is it?)/Precision 12" R///De-spoiled and de-antenna'd/Charactere Grille/Euro headlights/Smoked corners/Smoked side markers/Q-S Rear seat delete/Raffi Race 3/Dieselgeek Race/Vent mount Defi D Boost & Oil Temp.

10-07-2006, 10:05 AM	#7
MCPaudiTT - DEFCON 1 AudiWorld Super User Account #: 83654 Join Date: Nov 2004 Posts: 10,906	Very helpful, John. Thanks! __________________ Got a question about your TT? Try searching the TT-FAQ! Got DEFCON? My FOTKI

10-07-2006, 10:39 AM	#8
JohnLZ7W AudiWorld Super User Account #: 5201 Join Date: May 2000 Posts: 21,133	I've got a couple more 8mm hoses to replace and I've run out of the silicone stuff. However one of them is a longer coolant return line and I don't really need to replace that one (when it leaks, it'll be apparent . If I hadn't done the coolant return lines on the left side of the engine I would have had enough for all of the vacuum lines. __________________ John 225QC Aviator Grey/Ebony Cloth Road Trip 2007 blog and gallery. "I just want to drive. I don't want to stop doing this, at all, ever" - Richard Hammond "This is me breathing" - Martin Blank

10-07-2006, 10:39 AM	#9
JohnLZ7W AudiWorld Super User Account #: 5201 Join Date: May 2000 Posts: 21,133	The $58 kit is sufficient. __________________ John 225QC Aviator Grey/Ebony Cloth Road Trip 2007 blog and gallery. "I just want to drive. I don't want to stop doing this, at all, ever" - Richard Hammond "This is me breathing" - Martin Blank

10-07-2006, 11:01 AM	#10
penguin101b New Member Account #: 88464 Join Date: Feb 2005 Posts: 468	I was going to buy the hose techniques kit last night, but then I remembered Steve's post with a different supplier for silicon hose here which is a little less expensive. How do you feel that 4mm was a bit too loose? Do you not feel comfortable using it because it is soo loose and thin? I wish this place had 3.5mm. BTW thanks for the excellent illustration! Take care,

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