JD;
Filter bypassing is a subject I was forced to learn about many years ago
when I bought a '62 Ferrari (no, I wasn't a rich kid-- I worked my butt
off to earn the money to buy it. A 6- year old Ferrari in those days was
just a "used car") that had TWO oil filters.
There was one oil filter in the usual place but a second filter was used
to filter the oil that was bypassed by the first filter. This way the
engine never received any oil that didn't go through a filter. The
filter canisters were also specified with a higher burst pressure rating
than an ordinary filter. You could use a PH-8 filter but on a cold
morning there might be a "bang" followed by a flood of oil. I think
Ferrari specified a PH-2815 and a PB-50 bypass filter.
This filter setup was very effective. When I rebuilt the engine the
bearings & cylinder walls looked very good.
Like most of their engines, the 3-liter V-12 was developed as a racing
engine so lubrication was a vital concern to Ing. Colombo. That engine
had a good record of reliability in endurance racing, too.
Regards, Neil Tucson, AZ
-----Original Message-----
From: owner-land-speed@autox.team.net
[mailto:owner-land-speed@autox.team.net] On Behalf Of James Tone
Sent: Thursday, December 09, 2004 8:45 AM
To: land-speed@autox.team.net
Subject: RE: What's in your crankcase?
20w-50,
Even though the car performed admirably for 15 years I made the mistake
of using 20-50 in my wife's 85 Grand Am...The car was used on short
trips and 95% in town non-freeway driving. There was a sludge build up
in it and I should have used a lighterwt oil. Her Honda asked for 5-20
and gets it. For the last few years our nitro motor used Torco 70 heated
to 160 before starting, never had a bearing problem.
After break-in my gas motors always ran Mobil 1...Tried it once in the
80's and gain 2 mph at El Mirage setting a record so I kept with it.
Will do it again when I start running my stuff in 05 or 06.
I believe heating oil is am important part of preping an engine. One of
the earlier statements about filer bypassing should part of all our
thinking. J.D.
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