Fuel level sender

I have good access to the existing fitting. There is about 5 inches from the top of the tank to the underside of the cabin some.

I could drill out the existing fitting and install an SAE 5 hole style sender, if necessary. Though I'd rather not.

I also have access to most of the top of the tank so I could drill a completely separate hole. Still, I'd rather not if I have other options.

I found an externally mounted ultrasonic sensor. No holes to drill at all. But it needs to mount on the bottom of the tank and shoot through the liquid. (I guess it works like a depth sounder). The tank is integral with the hull so I don't have access to the bottom.

tempest said:

I was thinking that you could possibly tap in a larger 1 1/2" NPT hole but a 5-inch clearance is pretty tight. It's never easy!

Click to expand...

Oh I see. Yes there is plenty of clearance above the existing 1" fitting. Some of the tank is below the sole, about 1/2 of it's surface is directly accessible.

So I could get a tap in there, or a hole saw to drill the whole damned thing out! But first I'll give the folks at FPI a call. That was a good find, thanks Jim.