[200q20v] Re: [V8] Re: [s-cars] Reprint of 4-97 Post: Piston
dsaad at bmailed.com
Tue Oct 30 14:47:15 EST 2001
I have been thinking about a seperator too - ever since I found oil
pooling up in the intake manifold. It can only come from blowby.
My car seems to use a lot of oil too, but it does not leak or smoke
noticably and the compression is good.
If you find something, I would be interested.
From: Brett Dikeman <brett at cloud9.net>
To: <mswanson at mswanson.com>
Date: Tue, 30 Oct 2001 12:58:42 -0500 (EST)
Subject: Re: [200q20v] Re: [V8] Re: [s-cars] Reprint of 4-97 Post:
Piston ring seating
> On Tue, 30 Oct 2001, Marc Swanson wrote:
> > > Only use Audi factory piston rings for pistons. Total Seal piston
> > > and many other "performance" piston manufacturers are not for use
> in turbo
> > > applications.
> > I have to disagree with you there. They have many different
> varieties of
> > rings to suit different applications... including turbo rings.
> Running them
> > in my 4ktq.
> Same here; my father, upon recommendation and advice from others,
> Total Seal rings for his Calloway 944, which was bored out by Calloway
> part of the turbo conversion. They supplied the correct rings.
> Rings like these are MORE appropriate for turbo cars, for one very
> reason. Inspect the intercooler on your car some time. It's -covered-
> oil. That's not from the turbo! It is from the crankcase ventilation
> system. Over time, compression will be raised in the engine by carbon
> deposits from the burning oil.
> Audi factory race/rally cars come standard with a emissions-illegal
> we can't use, to deal with the oil vapor(it releases the crankcase
> into the atmosphere, after passing through a filter.) Scott J told me
> about the one on his S2.
> The vapor comes mostly from the crank splashing the oil around, but the
> blowby from the piston rings is what a)makes the crankcase breather
> assembly necessary and b)pushes the oil vapor out of the crankcase.
> To whoever made this statement originally...why are total seal rings
> inappropriate in turbo engines? Any actual reason?
> I've been looking into a oil seperator, but I've hit somewhat of a dead
> end. They're becoming very popular in the piston aircraft world, where
> the problem is recycling the oil(piston aircraft go through an enormous
> amount of oil), and things looked encouraging when I contacted one
> manufacturer...a rep stated that they knew a couple of people were
> their seperators in automotive racing applications. When I responded
> asked for more info(such as pricing etc.), no answer came
> Systems made by Greddy and other companies seemed grossly simpified to
> point that they were nothing more than glorified catch cans, which is
> what is needed; the oil mist needs to be removed, we're not trying to
> catch overflow(which is what catch cans are for.)
> Installation of a proper oil mist seperator would reduce problems
> -oil consumption
> -michellin man hose failures
> -ISV failures and throttle gumming
> -intercooler inefficency due to oil coating(btw, this is easily solved
> sealing one end with a ziplock bag+some rubber bands, filling with hot
> water+dish soap, and swishing around; swish it a little before you seal
> the other end, or it'll blow right off from the expansion of air
> -deposit buildup on valves, combustion chamber
> -catalytic converter and O2 sensor premature failure due to deposits
> burning oil
> the list goes on, and on.
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