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FE Power Forums => Non-FE Discussion Forum => Topic started by: scott foxwell on May 26, 2018, 02:44:13 PM

Title: RobbMc sending unit or sump?
Post by: scott foxwell on May 26, 2018, 02:44:13 PM

Anyone have any experience with the bigger tube RobbMc fuel sending units? I have a new fuel tank for my 67 Fairlane and I'm at a cross roads whether or not to install a sump, or use the 1/2" pick up from RobbMc. Now's the time if I'm going to add a sump. Pro's and con's? TIA

Title: Re: RobbMc sending unit or sump?
Post by: jayb on May 26, 2018, 05:33:50 PM

I've got one on my 68 Mustang and will be buying another for my Shelby.  Mine came with AN fittings so hooking up the fuel lines was easy.  The only issue I have is the fuel gauge doesn't read quite right, but that problem may be elsewhere, perhaps the dash voltage regulator...

Title: Re: RobbMc sending unit or sump?
Post by: Tommy A on May 26, 2018, 09:36:34 PM

Scott, my son and I both have them on our fairlanes a 66and 67, both fuel gauges read waay off, I believe he put in a resistor in parrilel Sp?  and then rebent the float and they were a lot better it is a very nicely made unit   just my .02  Tom

Title: Re: RobbMc sending unit or sump?
Post by: Russ67Scode on May 27, 2018, 07:09:20 AM

I have one in my 67 mustang works great and my gas gauge was right on
Would not hesitate to buy one again

Title: Re: RobbMc sending unit or sump?
Post by: TomP on May 28, 2018, 10:51:26 AM

Welding a sump on a tank that has ever has gas in it is a risk. Then it also flakes the galvanizing off and clogs the filter.

Title: Re: RobbMc sending unit or sump?
Post by: scott foxwell on May 28, 2018, 05:48:13 PM

Thanks guys. This is a brand new tank, so the dilemma. I went ahead and ordered the 1/2" sending unit. I can deal with the gas gauge. Thanks again for the input!