Some years ago I read a post from Frank Guntheimer (sp?) that mentioned
that he had a coolant pressure gauge on his rig.  I kept my eyes open for
an inexpensive gauge that would tell me both pressure and vacuum.  Recently
someone suggested a "boost gauge".

  I found something on Amazon for a reasonable price and installed it about
2 months ago while I had the cooling system open for some other revisions
anyway.  (This is a '91 GL with a Subie EJ22 conversion.  Cooling/heater
system revisions are frequent)

  This gauge is not electrical; a small diameter nylon tube transmitts the
info.  I cut a heater hose up above the spare tire and inserted a brass
hose coupler that I had drilled and tapped from the side to accept the
fitting that came with the gauge kit.  Using a hole saw and some careful
Dremel work, I squeezed the gauge into the center of the cover that goes
over the heater outlets just forward of the shift lever.

It has been interesting to watch this gauge and get used to the normal
behavior.  At first the maximum pressure seemed to be about 10 or 12 psig.,
 but there may have been a little air left in the system.  Now when the
temp reaches its maximum the pressure is steady at 15 or 16.

What fun,
Larry A.

On Thu, May 12, 2016 at 4:21 AM, Neil N <musomuso@gmail.com> wrote:

> This thread is a an excellent "read" !
>
> Neil.
>
>
>
> --
> Neil n
>
> Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>
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>
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>