Matt,
Look! :)

Paul Lamar


Why do you even bother asking the group, Paul?? You already know what to
do.. ;)

Sorry, I apparently missed that part of the thread..

So, you see the same fluctuation in fuel pressure with the mechanical
gauge?


Matt-

I have not tested it yet. I was not happy with my mickey mouse
plumbing job so I re plumbed with steel brake line this morning.
I need to leave bright and early tomorrow morning so I won't
get a chance to run the engine again until I get back in about
a week.

I discovered Edelmann automotive fittings, hoses, lines & tubing.
These are the hot tip for mechanical pressure gages. Super robust.
The 3/16th OD black steel line is easy to bend and work with.
These MUST be reliable as they are car brake lines. Much cheaper
than AN braided lines.

http://www.plews-edelmann.com/

With out the engine running it is a solid 40 psi.
As you can see the vacuum lines are tapped into the dynamic
chamber. There is lots going on in there aerodynamically speaking.

I will eventually move them to the now unused oil injection holes
in the rotor housings. It will mean retuning the engine.


Paul Lamar
-

Sounds good.

I wonder how quickly the regulator can respond to changes in manifold
pressure.
I don't know precisely how the mechanism works but imagine it's probably a
little chamber with a diaphragm that pushes on a spring loaded tapered rod.
I imagine there's some mass and maybe some friction that probably already
damps the pressure.


Matt-
    
Is the 40psi too low to keep up ? Virg