wrx 1997 v4 blow off valve help

[answodns789]

i have troubling installing blow off valve into my subbie

it has no adapter in 1997 can somebody give me a hand i will give 30 if somebody can fix it for me its already installed but cant hear the sound maybe installed different hose

i live in manukau city text me 0221266042

[MercuryFree]

Does it have adjustable preload (via a screw/knob/rotating unit)? Could be turned up waaaay too high.

Where have you attached the vacuum hose to on the manifold?

[Stoffa]

if you have it plumbed back in (same plumbing as factory) it wont make any noise, it needs to vent to atmosphere if you want the noise

[MercuryFree]

 Stoffa said:

if you have it plumbed back in (same plumbing as factory) it wont make any noise, it needs to vent to atmosphere if you want the noise

I beg to differ

[answodns789]

dont know wat to do ae. today i tried to install

i installed bov on to pipe it comes from turbo but sound just like air leaking

and i blocked pipe on the top mount intercooler.

is it other way round??

[MercuryFree]

 answodns789 said:

dont know wat to do ae. today i tried to install

i installed bov on to pipe it comes from turbo but sound just like air leaking

and i blocked pipe on the top mount intercooler.

is it other way round??

It should be mounted to/off of the intercooler. The hose that goes in the direction of the turbo from the blow off valve area is not going to the turbo and is the return hose, which if running a non-recirculating blow off valve should be blocked.

The turbo takes air from the intake, and compresses it and pushes it out into the intercooler via a \'y\' shaped pipe on the bottom of the intercooler.

[answodns789]

cant understand. . . . .

so which hose has to be blocked? bottom hose? or top one?

vent to atmosphere is it okay or does it effect any to da car?

[Timmah]

 Timmah said:

See the bottom with the "Large 40mm valve? The hose coming off the intercooler connects here. Then where the blue trumpet is, is where the return hose goes.

[MercuryFree]

 answodns789 said:

cant understand. . . . .

so which hose has to be blocked? bottom hose? or top one?

vent to atmosphere is it okay or does it effect any to da car?

Vent to atmosphere is technically bad on a car with a MAF instead of MAP based air metering, like subarus. It will run very rich for a split second every time the valve goes off.

[Stoffa]

take it to a mechanic, if you cant work out how to fit a BOV I dont think you should be working on your own car

[Guest]

just block the bottom hose off thats uner the intercooler, and put a hose onto the the pipe that comes off the intercooler at the top and put a hose on there and put your bov onto that and the vacuum hose should be the same as factory

[boon]

Errr, so you plumbed it on the vaccuum side and blocked off the boost side? Then yeah, it\'s just gonna suck air, hahahaha...

[PommyWRX]

There should be a bung in the intake piping to the compressor side of the turbo blocking it off, the BOV should be attched to a pipe either on the intercooler or on the \'y pipe\' going from the turbo to the intercooler. also a vacuum line from the top on the bov, usually a small nipple with a hose clam, and that line should go to the top on the intake manifold, from memory the most left nipple, if standing above.

hope this isnt too confusing and helps

[petrolheadjman]

 Stoffa said:

take it to a mechanic, if you cant work out how to fit a BOV I dont think you should be working on your own car

yes

[boon]

It has just occurred to me that you probably don\'t have any form of functioning blow-off/bypass valve. Hence you will be getting epic compressor surge and probably risking tearing your turbo to pieces. Stop driving it until you work out which end goes where ;/

[Pappu1]

looks like its sorted i txted him and says ok

thats good for the car (if it was surge before )