850 vac lines

[inde_house]

Wat size vac hoses for 850. 4Mm or 6mm

[M-R-P]

Iirc, 4mm for the recirc and 5mm for everything else. You can get away with 4mm all round if you like.

[Taz91]

This may be a silly question, but are the vac line 5mm inside diameter or outside? About to replace all vac lines with silicone and looking for the correct dimensions to buy. Don't want to end up with metres of useless tube.
Thanks,
Jim.

[M-R-P]

Internal diameter mate.
When you order "5mm" it'll be 6mm internal. (usually a little less - 4.8mm)

Don't forget to buy some 4mm for the recirc pipe.

[Taz91]

Thanks! Not sure I followed that last bit; if I ask for 5mm I'll get 6mm? So drop a millimetre to be sure?

[M-R-P]

Oops - typo - 5mm mate. Having a bad day, sorry.

Ask for 5mm and you'll get 5mm internal diameter.

I need a beer lol.

[Taz91]

Nice one! :B_thumb: Ebay silicone hose here I come lol
I'll second that, all this typing is making me thirsty...

Oh, I nearly forgot. By recirc, are you referring to the recirculating dump valve? The car came with a Bailey's DV so I've just bought a Forge blanking plate to go with that, so won't be need tube for it :D

[M-R-P]

Nice one! :B_thumb: Ebay silicone hose here I come lol
I'll second that, all this typing is making me thirsty...

Oh, I nearly forgot. By recirc, are you referring to the recirculating dump valve? The car came with a Bailey's DV so I've just bought a Forge blanking plate to go with that, so won't be need tube for it :D

The recirc tube is used to operate the Baily DV mate. Replace that to keep it all matching.

Beware the cheap EvilBay hoses too - some collapse under vacuum or stretch and pop-off under pressure. I got mine (all 6mm) from HypHose, a hydraulic and conveyance piping company. I paid £11 for 4M of the stuff and it's pressure tested to +/- 35psi.

[Taz91]

Good call! I'm not too big a fan of the luminous colours - eg. Samco/Bailey blue so black was my choice to contrast the white body.

I might just give them a go, as that's very reasonable pricing and some durable sounding stuff.
Appreciate the input!!

[M-R-P]

They do most colours, incl. black.

:beer:

[Taz91]

Woo hoo, was getting worried there - they only have blue on the site :bounce:
Order placed, 4m of 6mm and 2m of 4mm should cover it, plus some as spares. calling me back tomorrow to confirm :D

[inde_house]

My mechanic replaced all of my vac lines with 5mm rubber fuel lines. Some proper heavy duty stuff. And u can get that from ur car spares shop

[M-R-P]

I believe you need 4mm and 5mm mate.
I used 6mm as P2 cars have larger ports.

[inde_house]

I ain't too sure on the exact size. All I know it was changed and what a difference it made

[Taz91]

I believe you need 4mm and 5mm mate.
I used 6mm as P2 cars have larger ports.

Oh yeah, as we've already established :doh:

Fuel line sounds like a decent compromise, (HypHose don't do 5mm tube) as long as it can resist vacuum (inward pressure)

[M-R-P]

you can use 6mm and wrap tape round the ports or use 4mm all round.

Fuel line is very popular for vac/boost pipes as it's hard as nails. Ugly tho.

[M-R-P]

I used blue, as it "sort of" matched the air filter...

http://i1100.photobucket.com/albums/g413/martinrpeachey/DSCF8059.jpg

[stribo]

I've used orange for my boost guage. :D

[M-R-P]

I've used orange for my boost guage. :D
I've got some more atacama cable ties if you need them ;)

[stribo]

Still got a load thanks mate. :)

[Taz91]

I used blue, as it "sort of" matched the air filter...

http://i1100.photobucket.com/albums/g413/martinrpeachey/DSCF8059.jpg

Looks very tidy, as does your engine bay!

That's a nice touch, you might have convinced me to go blue, as I'll endeavour to get myself an ipd or bsr intake kit; also blue ;)
- Shame your top mount didn't come in their purpley/blue, too

[Taz91]

I might just bite the bullet and go for 4mm i/d all round, as long as it won't cause any issues, which i'm sure it wont, just being cautious.

[M-R-P]

I know a few people who have gone 4mm all through. No problems reported.