what size are the vac hoses??

[scaredpassenger]

hi guys on inspection of all the hoses under the bonnet my ive noticed that all the black vacume hoses are seriously corroded and are crumbling apart when you touch them!!

ive noticed a few people on here have got the silicon vacume hoses fitted, what size diameter hoses do i need (internal specs) so i can fit them to the cupra??

weve noticed the power has gone a bit crap recently, i reckon this could be one of the reasons were down on power!

any ideas chaps??

 

[Cupra_G]

Yeah there notorious for crumbling with age causing boost leaks meaning lack of power. I changed all of mine to 3mm silicon hosing, you can also use 4mm though

 

[scaredpassenger]

what would be a better fit 3mm or 4mm
howe long do i need ? 1 meter do it??

 

[Ricardo_Smooth]

3mm

 

[scaredpassenger]

cool beans! i'll order some up now!!!

cheers

will i need to replace any of the little plastic t-pieces do you think??

 

[Cupra_G]

I yor careful and use a stanley blade to cut the hose you can reuse the t-piece, they will be pretty brittle as there only plastic.

 

[Myki da Pyki]

Id get 4mm hoses mate not 3mm and you'l need about 2metres to replace the whole lot

 

[scaredpassenger]

ive got 2 meters of red overbraided 3.5mm motorsport quality vac hose looks nice stuff!
cheers chaps!

 

[jacko18]

iv just done mine as i was loosing power and the engine management light came on.better now tho! used deisel injection piping,same as they use standard.got 5meters of it for 8.50! sorted!

 

[__B3NNY__]

Id get 4mm hoses mate not 3mm and you'l need about 2metres to replace the whole lot

Why would you get 4mm? when 3mm is nice tight fit, tighter the better?


Forge will sort you out with 3M for around a tenner, add seatcupra.net discount into the comments box to get your 10% off

 

[Myki da Pyki]

Forge recommend 4mm not 3mm

 

[jordyboy004]

4mm Vac Hose?

might sound like a dumb question but... having never been under a bonnet on any previous cars, what do the vac hoses look like.i would like to replace them all if poss. how can i tell them apart from any other hose. i have done the n249 bypass and have about 2.5meters of hose left over that i want to use up. could someone please help me out. a diagram would also be very helpful so i can see a rough location of where to find these hoses. cheers in advance

 

[Shytot]

cool beans! i'll order some up now!!!

cheers

will i need to replace any of the little plastic t-pieces do you think??

The windscreen washer t piece avaliable in halfords are really good replacements for the beige t pieces, same shape and size but seems to be a tiny bit thicker and of better plastic.

 

[cuprachrissy]

1 - Breather pipe
q From gravity valve on fuel tank
2 - Activated charcoal filter
q With solenoid valve 1 for activated charcoal filter -N80-
3 - Turbocharger
4 - Pressure unit
q For charge pressure control valve
5 - Non-return valve
q For activated charcoal filter system
6 - Charge pressure regulation solenoid valve -N75-
q The valve will be activated from the engine control unit (pulsed)
7 - Non-return valve
q For brake servo
8 - Crankcase breather pressure regulating valve
9 - Brake servo
10 - Air cleaner with air mass meter (-G70-)
11 - Overrun shut-off valve
q Checking → Chapter
12 - Charge pressure sender -G31- charge air cooler
13 - Combi-valve
q For secondary air system
q Checking → Chapter
14 - Fuel pressure regulator
15 - Non-return valve
16 - Turbocharger divert valve -N249-
17 - Crankcase breather
18 - Secondary air pump motor (-V101-) */**
19 - Non-return valve
q For activated charcoal filter system
20 - Vacuum reservoir
21 - Secondary air inlet valve -N112-

 

[jordyboy004]

hope that wasnt for my benifit lol.

 

[Big_A_Cupra20vt]

sorry for the bump but has anyone still got that diagramm that cuprachrissy put up? it would help me out a bit as im in the process of changing a lot of pipes/hoses

 

[cuprachrissy]

sorry for the bump but has anyone still got that diagramm that cuprachrissy put up? it would help me out a bit as im in the process of changing a lot of pipes/hoses

here you go matey, all in this thread
http://www.seatcupra.net/forums/showthread.php?t=215816