mgs
[Top] [All Lists]

RE: Crankcase Ventilation

To: "'David Sylvain'" <niosh@pop.ma.ultranet.com>,
Subject: RE: Crankcase Ventilation
From: Hans Duinhoven <H.Duinhoven@simac.nl>
Date: Wed, 13 Jan 1999 08:37:24 +0100
David,

Is it winter overthere?
This can be one of the causes.
One of the end products of petrol (gas for the USA's etc.) is water vapour.
This condensates and mixes on the several parts of the engine whcih are
cold.

One thing to remember is to renew the engine oil at least every 6 months in
order to avoid to let to much water parts into the oil, which then does not
lubricate well.

Cheers,

Hans
'71 MGBGT more carts in less in the box

> -----Original Message-----
> From: David Sylvain [SMTP:niosh@pop.ma.ultranet.com]
> Sent: Tuesday, January 12, 1999 17:53
> To:   Lawrie  Alexander; Hans Duinhoven; skye@ffwd.bc.ca;
> mgs@autox.team.net
> Subject:      Re: Crankcase Ventilation
> 
> Lawrie,
> 
> I may have overstated my case when I used the word "goop."  What I see
> under the filler cap is mostly moisture (a few drops), and a little bit of
> white stuff which seems to be from the combination of moisture and oil.
> What I want to do is prevent this stuff from becoming a full-fledged goopy
> mess.  
> 
> I check the coolant level every day I drive the B, and it hasn't dropped
> at
> all.  Also, there's no white stuff on the dipstick, which I would expect
> if
> coolant were getting into the oil.
> 
> I am going to retorque the head in any case, just to make sure . . .
> 
> Thanks,
> 
> Dave 
> 72 B roadster
> 
> At 07:36 AM 1/12/99 -0800, Lawrie  Alexander wrote:
> >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)
> >>> >
> >>
> >
> >

<Prev in Thread] Current Thread [Next in Thread>