Thread: Long range tank fuel gauge

Hello all,

I am new to the defender community and am picking up my first next week.

It's a 1995 110, and I'm so keen to get behind the wheel of my dream car.

One quick question though. The previous owner has installed a 150L long range fuel tank in it, but has informed me that the fuel gauge still only reads the stock fuel tank of 70L. My question is, is there a way to accurately read my new long range fuel tank of 150L? Do I need a new fuel sender? An electronic gauge? Or just to simply modify the existing sender? Or something completely different?

I've been reading through forums for the past 30 minutes and I can't find what I'm looking for, nor any products to help me.

Any help would be muchly appreciated!

So excited to pick it up and share this journey with you all.

Bailey

Depending which tank is fitted, for a Long Ranger tank, the depth of the tank is +/-380mm, the fuel sender is lower than the top of the tank and is about 280mm. I get 360-380 kms before the needle moves off the F marker. the fuel level sender will hit the Empty marker as if the factory tank is fitted however the long range tank having a larger base area, there is more residual fuel in the tank before it runs dry. If you don't mind having 1/3rd of your fuel range above the F marker and fairly accurate E marker, there is no need to mess with the fuel level sender.

If you can't live with that scenario, the Defer 300tdi gauge ohm range is

300 tdi Gauge range
FULL - 19 OHMS
3/4 - 38 OHMS
1/2 - 67 OHMS
1/4 - 116 OHMS
Reserve - OHMS
Empty - 270 OHMS

VDO / Autometer / KUS / Wema etc sell a float style fuel level sender with a ohm range of E 240 - F 33. that is not quite aligned with your gauge, so you will need to buy a magic box that changes the ohm range. Tanks Inc (Meter match) in the US sell a box that is programmable and you can set your ohm output so it lines up with the gauge based on the actual fuel volume. Cheaper options from Ebay like that from ARC allow you to set the E and F markers and it runs linear between the 2. Problem with that is the shape of the tank is not a box so the 3/4, 1/2 and 1/4 markers will not necessarily line up with the volume of fuel in the tank. Naturally this option requires drilling a hole for the fuel level sender mounted to the top of the tank.

Whether you can use a longer swing arm on the float will be a matter of space in the tank. I have no idea if the baffles will foul the longer arm.