datsun-roadsters
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Re: Oil drainback

To: Scott Occhiuto <calabria1922@yahoo.com>
Subject: Re: Oil drainback
From: RWM <RWM@rwmann.com>
Date: Wed, 10 Mar 2004 15:14:24 -0500
Scott,

As long as it was located low, below oil pump elevation, to prevent
siphoning, that should work.

The ultimate solution is an "ACCUSUMP", a pressure accumulator and
pre-oiler, but it's spendy.
You'll want the one with cockpit mounted electrically operated valves...

- Bob

Scott Occhiuto wrote:

> Hi Bob/Gary/List,
>
> To prevent oil drainback out of the filter, would
> installing a remote filter system, with the filter
> base being up rather than down, prevent this?
>
> If so, has anyone else done that and found it cured
> the problem?
>
> Thanks!
>
> Scott.
>
> --- RWM <RWM@RWMann.com> wrote:
> > Gary,
> >
> > I get the same thing and it also occurs within 30
> > minutes or so in the summer when the engine is very
> > hot (and oil thins out).
> >
> > Since drainback also occurs through/by the pump
> > lobes (depending on clearances), I don't know if
> > sealing the drainback tube would make much of a
> > difference.  I bit of permatex presumably couldn't
> > hurt unless it started floating free in smaller oil
> > passages.
> >
> > - Bob Mann
> >
> > Gary Boone wrote:
> >
> > > I removed the oil filter the other day after the
> > engine hadn't been started since about October and
> > found the oil filter empty.  I thought I had
> > redundant features to prevent oil drainback but
> > apparently neither one are effective.  I have the
> > anti-drainback tube and a supposed good
> > anti-drainback valve built into the oil filter,
> > which is a Purolator Pure One.  Is anyone else
> > experiencing the same thing after winter dormancy?
> > Is it necessary to use a sealant on the
> > anti-drainback tube?
> > > Thanks for any feedback.
> > > Gary






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