Hi All,

  I didn't find as much as I'd hoped, but there was this:

================== Ancient message =========================

From:     <13brv3@mchsi.com> Date:     2003/05/16 Fri PM 07:42:35 EDT
To:       "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject:  [FlyRotary] Fram Oil Filter Pressures

Greetings,

I intended to use an HP1 racing filter, but thought it wouldn’t fit,
so I picked up a shorter PH43 filter.   As it turns out, I was able to
fit the larger filter by turning it about 45 degrees from vertical,
but when I was considering the other filter, I asked Fram for the
pressure rating.  Here’s their reply for both filters in case anyone
is interested.

Cheers,

Rusty



Fram’s reply:

The PH43 has a burst pressure rating of 200 PSI.  The recommended
operating pressure should not exceed 80 PSI.

The HP1 has a burst pressure rating of 500 PSI.  The recommended
operating pressure should not exceed 200 PSI.

____________________