Dr. David J. spent a fair amount of time explaining that I needed to have my
oil temps up to 220f in order to drive the water out of the oil....hmmm
sounds familiar.
I run a stock early TR4 radiator and a nice oil cooler. I run a bit hot, but
never to boiling. Never experience condensation....that I know of.
Jack's cooling system is far superior to mine...as is most of the rest of
his car.
By Jove! I think you've got it, Brian!
Jack need to put some big chunks of cardboard in front of his expensive
radiator/// :-)
i AM NOT jealous...really.
-----Original Message-----
From: Brian Evans [mailto:brian@uunet.ca]
Sent: Thursday, November 12, 1998 6:57 AM
To: JWoesvra@aol.com
Cc: vintage-race@Autox.Team.Net
Subject: Re: Condensation
Jack's comment brings up a point about oil temps. I have friends who get
very anxious if the oil temp goes above 210 - 220 deg (F). They like to see
180, and add coolers to get that. But the water vapour doesn't get driven
out of the oil until those temps are achieved. And many people measure the
temp. at the output of the engine, directly after the oil has been heated by
the bearings, etc. Smokey Yunick says that the temps should be 220, up to
240 - 260, higher is ok with synthetic, *and* he measures the temp at the
pressure input to the engine (in the line from dry sump tank to pressure
pump on a dry sump car)! The oil manufacturers (Valvoline tech rep.) say
that sump temps in a street car should be 220.
I don't even measure oil temp. But I'd bet that excessive moisture in the
engine is an indicator that temps are too low. What say you all?
Brian
At 01:19 PM 11/11/98 -0500, you wrote:
>In a message dated 98-11-10 19:47:22 EST, vinttr4@geneseo.net writes:
>
><< My conclusion at the minute is that it is due to the water component of
> blowby condensing on the coolest spot in the engine, the valve cover. >>
>
>I'm sorry that I didn't respond sooner. I have seen similar conditions in
the
>past when no actual water leak was found. I think it is a condensation
>situation and I have seen it in a Mini racer and in a Chevy 350 with steel
>valve covers in a Suburban with an open breather hose. This went away by
using
>a closed system with a PCV valve.
>
>I think that by making sure the oil temp gets above 212 degrees the water
will
>quickly boil off. This water build up certainly isn't a good thing, but it
>doesn't really seem to hurt anything either.
>
>Go figure.
>
>Jack Woehrle
>
Brian Evans
Director, Carrier Sales
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(416) 216 5111
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