Fuel non return valve / Oil pressure switch.

Looking back this evening over the blog it has come to my attention that many times I have written that I am going to do this and that but when it comes to it I have done it all a completely different way! Sorry for the confusion but It's all part of a massive learning curve and this is a BLOG - a sort of online diary of events of how I have dealt with the building up of this monster.

Your comments are ALWAYS welcome.
Thanks
Jim

The fuel non return valve. This should stop the fuel returning into the tank and emptying the fuel filter/pump arrangement every time the engine is at rest.

This is the variable oil pressure switch which will have it's 12vdc feed taken from the fuel pump output of the relay bank so that if the oil pressure drops below 20PSI (only when the fuel pump is running) then it will trigger it's switch and send a 12vdc signal back to the Tacho board thus shutting down the engine. I will have to invert this output using a simple relay circuit because the switch is N/O (this means that when no pressure is applied to it the contacts are in the open state - it's only when you apply pressure over the set point (set with a small screw at the top of the switch) that the contacts then close so in order for it to give a 12vdc output when the pressure drops, it needs to be inverted.

Just some general layout pictures.

Over this weekend I am aiming to complete the electrical side of things for the test. Tidying up the wiring and fitting the temp controller is also on the list.