Hello Michael,
You are 100% correct and I completely agree with you on this one.
During the 1950 and 1960 it was almost an unwritten rule that motorists
added Redex upper cylinder lubricant to the gasoline when you filled up
your
automobile, every petrol station had a dispenser near the pump and you
added
yourself or the attendant did it for you, it was possible to have a one
penny shot, or a "long" one for ten pence.
Even to-day I purchase Redex in gallon tins and give the carbs a "drink" of
it out of the oil can about once a month, you will get white smoke, but it
lubricates the dry exhaust valves and cylinder bores and hills that you
previously had to change down for you will now simply fly up in top gear,
it
is almost like taking the handbrake off.
How is that for re-inventing the wheel?.
Regards.
David.
----- Original Message -----
From: "Michael Salter" <msalter@precisionsportscar.com>
To: "'David Porter'" <frogeye@swcp.com>; "'Healey List'"
<healeys@autox.team.net>
Sent: Saturday, April 22, 2006 3:02 PM
Subject: RE: cold start bore dilution
With all due respects guys, the Accusump will not solve the problem that
we
have been addressing here.
Remember we were discussing the problem of oil being washed from the upper
sections of the cylinder walls due to over fueling during startup.
To solve this we need to add oil to the upper sections of the cylinders or
stop excess fuel getting to that area.
Accusump just pressurizes the engine's lubrication system, something that
is
not really necessary because boundary lubrication will work perfectly
adequately until the pump builds up pressure.
Accusumps are used in racing to maintain pressure in extreme situations
when
the engine is running at full power and the oil moves away from the oil
pump
pickup.
Having run a racing 100S engine at race speeds with no oil for 10 km and
found no appreciable damage I suspect that the need for an Accusump in our
old cooking engines is serious overkill.
Michael Salter
www.precisionsportscar.com
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