Reed switch fuel sender.

[harringtondav]

I'm helping my bud shake down a nonfunctional fuel gage and we determined the sender is bad. I changed from a float arm to a Moeller reed switch and it works great, so I suggested he get one. My 9" tank took an 8" sender per Moeller. Their design keeps the float 1" off the bottom of the tank. But Moeller doesn't sell a 9" sender for his 10" deep tank.

VDO sells a similar reed switch sender in 230 and 250 mm lengths (9" & 9.8"). The unknown is if VDO's lengths are speced. for tank depth minus 1" like Moeller, or are these the actual length?

He'd like to have a sender that indicates 'empty' when you have little reserve. Otherwise he or other drivers will start to second guess it.

Does anyone know which VDO length he should buy?
Thanks.

 

[alldodge]

VDO is speced the same, minus 1 inch, but can be a bit less or more. It gives a reserve and also the sender doesn't come in contact with the bottom if flex happens. Placed a new one in my tank a few years ago

 

[harringtondav]

VDO is speced the same, minus 1 inch, but can be a bit less or more. It gives a reserve and also the sender doesn't come in contact with the bottom if flex happens. Placed a new one in my tank a few years ago

Thanks. I'll suggest he goes w/the 250 mm. My old float arm bounced the gage from limit to limit in rough water. The reed switch sender barely twitches the gage.