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Re: Crankcase Ventilation

To: "Hans Duinhoven" <H.Duinhoven@simac.nl>,
Subject: Re: Crankcase Ventilation
From: "Lawrie Alexander" <Lawrie@britcars.com>
Date: Tue, 12 Jan 1999 07:36:41 -0800
Hey, sometimes even those of us who have been in the car repair business for
over 30 years can make a mistake..................

Lawrie

-----Original Message-----
From: Hans Duinhoven <H.Duinhoven@simac.nl>
To: Lawrie Alexander <Lawrie@britcars.com>; David Sylvain
<niosh@pop.ma.ultranet.com>; mgs@triumph.cs.utah.edu
<mgs@triumph.cs.utah.edu>
Date: Monday, January 11, 1999 11:46 PM
Subject: RE: Crankcase Ventilation


>Hi listers,
>
>I had "goop" in my Citroen 2CV, which was air cooled.
>So goop not always indicates water leakage into the cylinders....
>
>Cheers,
>
>Hans
>
>> -----Original Message-----
>> From: Lawrie  Alexander [SMTP:Lawrie@britcars.com]
>> Sent: Tuesday, January 12, 1999 06:45
>> To: David Sylvain; mgs@autox.team.net
>> Subject: Re: Crankcase Ventilation
>>
>> David.........
>>
>> What you are seeing is not a good sign, I'm afraid. Oil vapor alone
leaves
>> just an oil film; the "goop" you are seeing sounds like a mixture of oil
>> and
>> water (which, I know, don't mix, but you know what I mean...........)
This
>> suggests to me that the head was not re-torqued after the engine was
first
>> started up so you have a leakage of coolant into the combustion chambers
>> or
>> oil return passages, or worse, that there is a crack in the head. The
>> first
>> thing I'd do is re-torque the head. If the nuts tighten up an appreciable
>> amount, that may fix the problem. If they are tight and you continue to
>> see
>> moisture in the oil, I believe the head must come off to be checked.
>>
>> Lawrie
>> British Sportscar Center
>> -----Original Message-----
>> From: David Sylvain <niosh@pop.ma.ultranet.com>
>> To: mgs@triumph.cs.utah.edu <mgs@triumph.cs.utah.edu>
>> Date: Monday, January 11, 1999 7:29 PM
>> Subject: Crankcase Ventilation
>>
>>
>> >Being rather new to the List, I don't know if crankcase ventilation has
>> >been discussed already.  Having said that, I am hoping that someone can
>> >give me some sage advice as to what is needed to keep moisture and goop
>> >from condensing under the oil filler cap (and eventually all over the
>> >rocker arms, & throughout the oil passages) in my 72 B.
>> >
>> >I got the B in late November with no emissions controls, except for the
>> >absorption canister:  there's no PCV valve, gulp valve, air pump, etc.
>> The
>> >engine isn't original -- It's a 1977 18(V) with HS-4s.  The oil
separator
>> >tube vents to atmosphere, and a hose connects the valve cover to the
>> >canister.  The engine was reportedly rebuilt, and was said to have had
>> >approximately 300 miles on it when I bought the car.  ( I have since put
>> on
>> >approx 800 miles...)
>> >
>> >The car runs really strong, and is a real blast to drive, but, on one of
>> my
>> >first drives, I noticed a faint odor of blow-by.  I opened the oil
filler
>> >cap, and sure enough, I could see blow-by swirling around under the
valve
>> >cover.  I also found moisture & a little bit of whitish goop inside the
>> >filler cap.
>> >
>> >It's not that I don't drive far enough to warm the engine -- the car's
>> too
>> >much fun to go just "around the block."  Nevertheless, I always find the
>> >same worrisome stuff beneath the cap when I get home.  I don't see
>> anything
>> >on the rocker arms (looking in thru the filler opening), but I really
>> need
>> >to pull the valve cover and take a look.  When the engine is running (of
>> >course), a little blow-by can be seen at the end of the oil separator
>> tube,
>> >if you look closely.
>> >
>> >The Moss catalog shows several arrangements for ventilating the
>> crankcase.
>> >It seems that one of these might help remove the blow-by gases before
>> they
>> >can condense & contaminate the oil & foul everything up.  I would really
>> >appreciate some advice as to which arrangement (if any) would work with
>> my
>> >totally un-smogged engine.  And this begs the question of whether it is
>> >"normal" to have some blow-by in a "rebuilt" engine.
>> >
>> >TIA
>> >
>> >Dave Sylvain (a newbie)
>> >72 B (an old B, but a good B)
>> >
>


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