need to get some silicone vacuum hose ordered up for the s2, still on standard mfi and all that.

wondering what size internal bore hose to buy to suit? had planned to measure some of the stuff i took off, but it seems over the years iv gone and lost it or dumped it all

 

3-4mm ID i think?

 

its crap, use proper hose.
It swells up under pressure and collapses under vacuum.

 

well whats the proper hose to use that you speak of then? i thought silicone vacuum hose was the only real option?

 

+ 1 - be good to know also

 

but regardless of which is right or wrong, i only wana know the internal bore size lol

as far as different types, im not sure what the hell else you could use other than rubber or silicone vacuum hose?!

 

you just need something more rigid than the silicone stuff that stretches like an elastic band. mine has some fairly thick walled air pipe that tony @ turbosystems fitted after i made the same mistake and used silicone because it looks pretty.
only pic i can find, you can kinda see the size of it on the wastegate plumbing



as for diameter 3mm rings a bell but i could be wrong.

 

may seem slightly overkill but i would rather use something like this
http://www.ebay.co.uk/itm/1M-Cotton-...#ht_1952wt_952
available in 3.2 and 3.5mm id.

 

That stuff looks good, and is reasonably priced 2!