Aftermarket BOV for the AWIC?

LaureltheQueen · Post by **LaureltheQueen** » Wed Oct 26, 2005 5:32 am

What will work, and actually hook up correctly? My bov currently resides directly over my turbo, so I'm expecting it to go out rather soon

vrg3 · Post by **vrg3** » Wed Oct 26, 2005 5:47 am

I'm using a Bosch blowoff valve from a Saab 9000. It's cool because there are lots of options in the same form factor, and replacements are fairly cheap.

The Bosch valve's fittings are about 1" in diameter, so I slipped some 3/4" heater hose with a 1" OD over the 3/4" fittings on the rubber compressor inlet elbow and the plastic compressor-to-intercooler pipe.

Then I got a molded 1" radiator hose that had a short straight segment and also a 90-degree bend in it. I used these two segments to plumb the Bosch BOV in.

It now looks like it was supposed to be there. I'll try to take pictures in the morning.

Post by **Legacy777** » Wed Oct 26, 2005 6:08 pm

Yeah, I'd be interested in this too.

thanks

THAWA · Post by **THAWA** » Thu Oct 27, 2005 2:39 am

Why do you think it will die? Aren't they setup this way on Legacys and Libertys with the AWIC, and Imprezas up to and including version 2?

vrg3 · Post by **vrg3** » Thu Oct 27, 2005 2:45 am

Yeah... but without the chimney, the heat will indeed cook the blowoff valve eventually.

I didn't have a chance this morning to get the picture. I'll try again tomorrow.

Post by **Legacy777** » Thu Oct 27, 2005 3:07 am

Just curious....what does the stock piping/bypass look like on the liberties that had the AWIC?

vrg3 · Post by **vrg3** » Thu Oct 27, 2005 3:45 am

It's very simple, short, and direct.

The blowoff valve is stuck into the rubber compressor inlet elbow and a short piece of straight hose goes from the valve to the fitting on the intercooler inlet pipe.

You can see it in this picture:

http://www.graphics.cornell.edu/~v/pics/ej20g_side.jpg

Note that the angle of the BOV fitting on the compressor inlet elbow is different on EJ20Gs. With an EJ22T inlet elbow, you'll need an S-shaped hose if you want to do it that way.

vrg3 · Post by **vrg3** » Thu Oct 27, 2005 4:10 am

I have to leave for work before the sun rises tomorrow, so I just went and took a crappy picture just now:

http://www.graphics.cornell.edu/~v/pics ... v_awic.jpg

I suppose it might not fit so great depending on how you deal with PCV.

scoobiedoo22 · Post by **scoobiedoo22** » Thu Oct 27, 2005 10:06 pm

Snowjob had one of his vf11/awic setups for sale and posted a good pic of the complete assembly piping/bov.

http://bbs.legacycentral.org/viewtopic. ... highlight=

John

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Aftermarket BOV for the AWIC?

Aftermarket BOV for the AWIC?