Another SRI turbo in Adelaide

[Jonobrtn]

Hi just got myself a MY07 AH SRI turbo and having never owned a Holden/Opel I gotta say the little guy has grown on me since I first learnt of them

[benzino]

Welcome and enjoy!

[dutchy]

Welcome to the forum.

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[Jonobrtn]

I actually just found a loose plug and two loose hoses near the throttle body. Are these hoses to just attach to one another?

[faneca]

Hey mate welcome along! Where abouts in Adelaide are you?

Do you have a picture of the hoses? There are quite a few that ran behind the engine bay so a picture of them would help narrow them down.

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[Jonobrtn]

I've put the hoses down to missing a one way valve between them but I am still unable to find where this plug goes

[faneca]

If the plug is up on the firewall behind the throttle body it'd be a connector for a different engine.

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[Jonobrtn]

It sounds exactly as you describe it. I was tearing my hair out looking. So seems I need a part number for this valve then

[faneca]

Yeah the astras tend to share a loom across the majority of their models cheaper to have one loom with everything than having several looms for a particular set up.
Not sure how much brand new ones are but I know some people have used aquarium valves with some success

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[Jonobrtn]

Can only get the valve as a genuine Holden part and they were asking $308 for it :S It mustve been the wrong part. Well for now I just have them blocked off to stop the leaking until I find another part or solution. Honestly it feels better as it is but I don't know how good it is for the engine

[Jonobrtn]

I'm down Seaford way in the southern suburbs

[Jonobrtn]

Now I'm thinking I've blocked off the pcv line erk. I'll need to do some research

[dutchy]

That would be the one way valve indeed. I used to buy these in Europe for 25 dollars. Sold my last one to a member not too long ago. 308 dollars, tell em they're dreaming. Have a look on fleabay. As Aaron said, a 5 dollar fishing/aquarium one way valve will do the job for a little while too.

[dutchy]

Expensive shipping but you get the idea, 30 bux.
http://www.ebay.com.au/itm/90423045-Genuine-Vauxhall-Turbo-Z20LET-Crankcase-Non-Return-Valve-/272490906242?epid=1733624145&hash=item3f71b94282:g:rIYAAOxy-WxTBLDF

http://www.ebay.com.au/itm/Genuine-Vauxhall-Astra-H-Zafira-B-Turbo-Z20LET-Crankcase-Non-Return-Valve-/222179475002?epid=1733624145&hash=item33baedbe3a:g:PSEAAOSwPhdVDHL-

[Jonobrtn]

THATS EXACTLY WHAT I NEED. Holden was quoting something else by looks of it. Will be buying

[dutchy]

THATS EXACTLY WHAT I NEED. Holden was quoting something else by looks of it. Will be buying

check autovaux and some of the other known vauxhall parts sellers in the UK, shipping doesn't need to be that expensive either. Otherwise Ebay Germany as their shipping isn't very high either.

[chris_r]

Or you could try one of these. $11 incl. shipping and they're aluminium. Got one here I was going to put on my Z20LET, as the engine I have came with a busted one, but never got around to it and have had it blocked off ever since.

http://www.ebay.com.au/itm/1-8-4mm-Non-Return-One-Way-Fuel-Check-Valve-Aluminium-Alloy-Petrol-Diesel-SL-/142424213133?hash=item212925068d:g:8JgAAOSwvflZTbp F

I'm led to believe that the purpose of the one way valve on the vacuum lines is to allow excess crankcase pressure back in through the intake manifold's vacuum system. A blocked valve can apparently result in the Z20LEx's most common issue, the leaking rocker cover gasket. Having said that, I haven't really experienced the issue since having that line blocked off, probably because the crankcase also vents gases back in through a much larger pipe back through the intake pipe just after the MAF sensor.

[Jonobrtn]

I got it all sorted with a cheap check valve and it all good now except the quick paint job to fix a keying on the bonnet I found

[dutchy]

Ah mate sucks 🙁

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