LRA aux tank install (1 Viewer)

[80t0ylc]

Great thread guys. @Outsane @80t0ylc any longer term feedback on pump location? Kicking around optimal spot...probably doesn't matter assuming it's not excessively far away from the tank and also correctly placed vertically (latest instructions state 12" from bottom of tank to pump). We were going to catch one of the captive nuts on the floor like originally posted in this thread, but considering dropping down a bit based on the feedback here.

And any suggestions on pulling 12v power? Cig lighter? I'd like to be able to run it when the key is out/truck is parked.

Excited for the extra range. And to install that clean Solvefunction knockout for the LRA gauge...so clean! Appreciate the guidance on the wire routing as well - aiming to follow that.

Thanks guys!

Electric fuel pumps traditionally pump better than they suck, meaning - locate the pump close as possible to tank. I believe that's why many OEM pumps are actually in the tank. I originally had my pump attached to the the floor, but moved it to where it is now. In front of the tank, below the top of the tank, near the rear panhard rod, similar to @Outsane 's location.

Good power connection on it's own circuit (not shared) would be my choice and as @Outsane mentioned, fuse is important. Not real excited about running pump with the ignition off. It's real easy to get distracted and not get back to the rig to shut it down, as necessary. As much as it seems like a good idea to pump fuel while the rig is parked, the negatives of what could happen when your attention is compromised, to me is not worth it. And for safety's sake, it makes sense for pump not to run with key off.

 

[Outsane]

Pretty sure the pump turns its self off, but I wouldn't want the lights always on.

 

[lumbee1]

@Outsane , here's a pic of the location where I chose. It's mounted to the frame member that the front of the aux tank is mounted to, above the panhard rod. Looks like yours is mounted to the brace that's part of the floor or body of the 80. If you measure up from the bottom of your aux tank, you'll see that the body mount is like twice the distance which makes the pump work outside it's designed perameters. The pump initially works, but will tend to fail with frequent and extended use. That's been my experience with tank installed for over 2 years, now.
View attachment 3062853

This is not a great location for mounting the fuel pump.
Per @Outsane

Rear Bump Stop Types

I've been researching rear bump stop setups. In that search I noticed a couple what looks like factory type rear bump stops. One is shorter, one is longer. I know mine has the shorter setup which leads me to believe maybe the longer one is an aftermarket one or one from another vehicle. Any info...

forum.ih8mud.com

 

[80t0ylc]

This is not a great location for mounting the fuel pump.
Per @Outsane

Rear Bump Stop Types

I've been researching rear bump stop setups. In that search I noticed a couple what looks like factory type rear bump stops. One is shorter, one is longer. I know mine has the shorter setup which leads me to believe maybe the longer one is an aftermarket one or one from another vehicle. Any info...

forum.ih8mud.com

That video is with Delta's rear panhard rod leveling bracket installed, which is one reason why the panhard hits the frame. I have removed my leveling bracket, went back to original panhard setup. Also, because of the extra weight of the aux tank, plus towing tongue weight, I've removed the bump stops and installed air bags. So barring a catastrophic loss of air and a severe bump, chances are there would not be a problem. Also off road, I've learned with experience and especially at my age to not be lead footed with the throttle pedal. But, believe me, the location weighed heavy on my mind, until I removed the DVS bracket. No disrespect to the bracket or DVS intended. But with my 2.5" lift, I didn't really feel a difference between stock or with the bracket installed.

 

[LandCruncher80]

I have this kit too - bought it from a fellow cruiser head second hand (new condition just never installed by PO). Just haven't got around to installing it yet. Outsane's thread here is motivating me to get this done.

Question for @Outsane... Any specific prep/precautions for cutting the fuel lines?

Definitely want to avoid fire/explosion, and could use any details or best practices in this area of cutting the fuel lines.

Thanks in advance!

 

[NeverFinis]

Here is where I put my fuel transfer pump as shown be the newly installed rivnuts. I made a little metal standoff bracket to attach the pump to the crossmember.

Here it is with the suspension compressed, with the DeltaVS Panhard bracket installed.

 

[Outsane]

Question for @Outsane... Any specific prep/precautions for cutting the fuel lines?

Definitely want to avoid fire/explosion, and could use any details or best practices in this area of cutting the fuel lines.

Thanks in advance!

I marked a line and cut with a reciprocating saw with a Long blade. So far 0/2 on explosions. Moon was in waxing gibbous both times.

 

[Trusty Rusty]

Pulled off the rear diff breather hose and plan to use the same captive nut to mount one end of the fuel pump (other end will be tapped/bolted through the mounting plate). I'll grab some pics in the morning, but using that exact same frame crossmember that both @Outsane and @80t0ylc are using. Leaves the pump semi-accessible without having to drop. And shouldn't have any sort of clearance/interference risks there since it's on the frame and none of the travel components could potentially contact. That crossmember leaves the pump towards the upper half of the tank, short run on the 'sucking' side, and business as usual on the outlet side up into the tee/main tank.

Thanks for the feedback on the power...will probably go in the same direction with something keyed on/off linked to ignition rather than always hot off of the cig lighter. The pump does have an 'auto shutoff', but had not considered the light always being illuminated off of somewhere like the cig lighter.

 

[Trusty Rusty]

I have this kit too - bought it from a fellow cruiser head second hand (new condition just never installed by PO). Just haven't got around to installing it yet. Outsane's thread here is motivating me to get this done.

Question for @Outsane... Any specific prep/precautions for cutting the fuel lines?

Definitely want to avoid fire/explosion, and could use any details or best practices in this area of cutting the fuel lines.

Thanks in advance!

@LandCruncher80 we just made a cut yesterday as well without any issues. Mark both lines along the inside of the frame rail and then disconnect the leading edge of the OEM filler neck and smaller vent tube from the rubber connections up near the OEM main tank (we used ample WD-40 to break everything loose initially - and then lots of physical persuasion to yank them loose). Once those are loose, plug the OEM main tank with some paper towels or anything else handy to keep them clean from debris/avoid excessive fumes. Also shot a small amount of air down the disconnected section before making cuts - no issues whatsoever. Chopped it with a cordless Dewalt Sawzall (and a cheap @$$ Harbor Freight fine-tooth metal blade). Deburred with a tiger disc and a file afterwards - no issues at all.

 

[Beast of Berlin]

Great thread guys. @Outsane @80t0ylc any longer term feedback on pump location? Kicking around optimal spot...probably doesn't matter assuming it's not excessively far away from the tank and also correctly placed vertically (latest instructions state 12" from bottom of tank to pump). We were going to catch one of the captive nuts on the floor like originally posted in this thread, but considering dropping down a bit based on the feedback here.

And any suggestions on pulling 12v power? Cig lighter? I'd like to be able to run it when the key is out/truck is parked.

Excited for the extra range. And to install that clean Solvefunction knockout for the LRA gauge...so clean! Appreciate the guidance on the wire routing as well - aiming to follow that.

Thanks guys!

Hi folks, I took the cig-light as the 12V-source. Wanted to run the pump only at key in "Start" mode to revent misuse in case somebody hits the switch coincidental and leaves the vehicle. The position of the pump on the frame can be seen in the attached slide show. I mounted it according to the instructions.
During the recent Morocco trip (8000km) I had no issue with the filling from sub to main tank. Always refilled on-the-fly. Would recommend it and consider it as super useful to have a lot of gas on board. Of cause the bills are painful +EUR 400.- for a total of 260liter. It worked all excellent in Northern Africa. Had other issues with the fan-clutch and the A/C but no suit this thread.

View attachment 3491944

 

[Beast of Berlin]

Hi folks, I took the cig-light as the 12V-source. Wanted to run the pump only at key in "Start" mode to revent misuse in case somebody hits the switch coincidental and leaves the vehicle. The position of the pump on the frame can be seen in the attached slide show. I mounted it according to the instructions.
During the recent Morocco trip (8000km) I had no issue with the filling from sub to main tank. Always refilled on-the-fly. Would recommend it and consider it as super useful to have a lot of gas on board. Of cause the bills are painful +EUR 400.- for a total of 260liter. It worked all excellent in Northern Africa. Had other issues with the fan-clutch and the A/C but no suit this thread.

View attachment 3491944