Date: Fri, 22 Aug 2003 18:29:22 +0100
From: Grunff <>
Subject: Re: does modyfing the crankcase ventilation system do any harm?

Simon Putz wrote: > im wondering if removing the crankcase ventilation hose on top of the engine of my 9000T that goes to the intake manifold and to the air intake tube and plugging the ends does any harm to the engine. thought the engine would burn better and not get this oily smoke inside again and i also wouldnt have to clean the throttle body so often. also where does the other big hose that goes from the same plug in the intake manifold go to (somewhere to the wheel arch, but cant follow it to the end. Hi Simon, The first questin to ask when considering mods to the factory setup is "why didn't Saab do it that way in the first place?". In some cases it'll be cost, in others it will be because the way they did it was the best way. The crank case needs to be vented. You can do this by leaving it open to the atmosphere, but this results in unacceptable emissions. So we feed the vent back into the inlet manifold, *after* the throttle body (so it's not depositing oil there). I really can't think of a single thing to be gained from modifying it. As for the other (bigger) hose, that's the brake servo hose, leave it alone ;-) -- Grunff

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