thread size on the oil pressure sender ? (1.7 4cyl car), Going to order some new gauges from Big Mark, need a bit of help Options

[nsr-jamie]

Hi, am just about to order some gauges from Mark (Big Mark) and before I order the gauges I need to tell him the thread size on the oil pressure sender of my car. He mentioned there are a few different ones, some metric others American sized. I thought they would be in Metric since our cars are European.

My car is a 1.7L 4 cylinder engine bored out to 2.2L with twin dell carbs. It has no aftermarket gauges for oil temp, pressure or anything other than the stock gas gauge, tach and speedo

I am away from my car for the next two weeks so don't have access to it and hoping to get my order on the way as soon as possible. Does anybody know the correct thread size please? Is it M10 or 1/8 or another size. I always thought they would be the same honestly have no idea.

Any help would be great, even better if so with pictures (IMG:style_emoticons/default/biggrin.gif)

Thank you

[Cap'n Krusty]

The temp senders vary, and the sender MUST match the gauge. The pressure senders are all the same. 10mm x1.0 tapered, OR 1/8" NPT. Effectively, they're the same thread. If you want a sender for the pressure gauge, you'll have to add one, using a dual sender. We set them off from the T4 engine with a 12" grease gun hose, which has the correct thread. We then clamp the sender to the fan shroud, making sure its grounded through its case. No ground, no gauge operation. Some folks use a straight piece of pipe instead of the flex line. BAD move, The weight of the sender acts like a pendulum, and the pipe fractures or tears up the engine case, and all the oil leaves the engine, right now.

The Cap'n