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Re: Crankcase Ventilation

To: Lawrie@britcars.com
Subject: Re: Crankcase Ventilation
From: gofastmg@juno.com (Rick Morrison)
Date: Tue, 12 Jan 1999 23:48:09 EST
What you should have said was that the "goop" is an indication of
moisture in the oil, sources of which vary.
 I've seen enough air cooled engines (MC and auto) with water in the
crank cases due to condensation, if nothing else. 
So you're still at least half right, Lawrie :>)

Rick Morrison
72 MGBGT
74 Midget

On Tue, 12 Jan 1999 07:36:41 -0800 "Lawrie  Alexander"
<Lawrie@britcars.com> writes:
>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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