Tuesday 27 January 2009

Fuel & Oil Pressure Gauge Plumbing - 1

Time to start the plumbing for the Fuel Pressure and Oil Pressure Gauges. The Oil Pressure log is taken from the Tee Adaptor at the back of the block and the Fuel Pressure log is taken from a Tee just after the Fuel Pressure Regulator:

The black cylinder on the fuel log is a fuel pressure isolator. It contains a piston which separates the fuel line from the gauge line. The gauge line is (will be) filled with engine oil so no fuel enters the cockpit. The piston also contains a seal at one end so that should the gauge line leak then the fuel pushes the piston the the end of the cylinder and seals the cockpit off from the fuel.
The two gauge lines will fit to bulkhead fittings and then on to the gauges themselves:
I prefer to use bulkhead fittings as it looks a lot neater than a grommet and will also allow the lines to be disconnected should the body be removed.

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