aaz engine question

Post by **hogseye** » 22 Feb 2008, 23:16

wot does the blow off valve do, and should the connection coming of it have a pipe going anywhere? new to turbo engines and know "pooh" about them, apart from the fact mine is using too much oil and i should have stuck with my nissan!!!

Post by **Westy.Club.Joker** » 23 Feb 2008, 17:28

BOV is supposed to open if your turbo boosts more than 12psi, it`s a safety device. The pipe from it is supposed to connect back into the air intake pipe somewhere near the turbo inlet, if you`ve an AAZ fitted then the pipework side of things is nayones guess, depends what was used and how it was done. I would`nt worry to much about it, just route the pipe from it somewhere where it won`t get filled with crap and it`ll be fine. If the turbo ever got itself up to boosting 12psi, you`re a lucky chap

(unless the turbo wastegate stuck shut, then the turbo could make over 20psi, you`d notice this as your van would start to go very fast, but not for long

)

Post by **hogseye** » 23 Feb 2008, 19:25

thanks for that, doesn't have a pipe on it at the mo will add one

Post by **Simon Baxter** » 23 Feb 2008, 20:39

hogseye wrote:thanks for that, doesn't have a pipe on it at the mo will add one

don't bother, vw didn't.