M813 Leaving me stranded

[Shirehorse]

The oil pressure gauge is NOT a mechanical but a electric one with a sender, this sender also sends a circuit to the pcb start relay which it opens, preventing starting when the engine is running.

Both my M816 and EC's XM813 have mechanical oil pressure gauges. They both have the copper line that runs from the gauge all the way to the lower left side of the block. No senders present.

However, one is a 1970 and the other is January of 1971. The other two M809s I've seen have had electronic senders, but they were a few years newer than mine.

 

[73m819]

Both my M816 and EC's XM813 have mechanical oil pressure gauges. They both have the copper line that runs from the gauge all the way to the lower left side of the block. No senders present.

However, one is a 1970 and the other is January of 1971. The other two M809s I've seen have had electronic senders, but they were a few years newer than mine.

Stock is electronic, the mechanical is added by previous owners, NOT stock, the same gauges and senders are used from 52 to the present (939).

 

[Shirehorse]

I have found the sender of which you speak, though, it is not on the block as I originally thought.

~Brian