[samboy1123]

Hi all, looking at installing an oil pressure gauge, could someone tell me the size of the sensor thread I need. Cheers

[fordem]

1/8" BSPT - I would strongly recommend you use a tee so you can keep the light and run the gauge, a light coming on is easier to see using your peripheral vision than a gauge needle gradually dropping back to zero.

Please do not hand a brass tee off the side of the block, it WILL fatigue & break because of engine vibration - mount the tee somewhere on the frame (I use zip ties and tie it to the closest brake pipe, or whatever is handy) and run 1/8" copper over to the block (metal is required to maintain a ground connection for the light and the gauges if you're going electric), don't forget to put a couple of turns in the copper line to allow for engine movement or the copper will fatigue & break.

[samboy1123]

Thanks for the info, I think the gauges I was looking at had a in built warning light, which with a bit of work I could run behind the dash?

[HarryHoudini]

Long time ago but we had an electrical oil gauge with warning light,i'm sure the connection at the block end just screwed in where the standard one went.

[fordem]

I've yet to see a guage with a built-in warning light, but, to be honest, I've always wondered why electrical gauge manufacturers didn't include the necessary sender integrated into the gauge sender - it could make life so much easier.

A word of caution however - electrical gauges have fairly large senders - a large sender on a brass adapter, that adapter will fatigue & break - I have a broken one somewhere around - the male thread snapped off in the block, it took me a couple of hours to get the stub out, an easy out just reams the brass out, rather than biting and allowing you to extract. If that happens to you in the middle of nowhere, it's gonna be a major source of grief.

[HarryHoudini]

There are plenty of models out there but are hard to find as they are a slow/elite product.We had one in our Datsun 1600 Rally car in the 1970's,the warning light used to blink(oil surge) & was extremely bright at night.



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