Upgraded pump info for LRA?
- Thread starter CharlieS
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kcjaz
SILVER Star
Cargo area fuse panel? Something you added?
Julian73
SILVER Star
I ran a 12g cable from a relay under the hood, this is triggered by the pump switch. I fused at 10 amps and figure pump start up could be 6-8 amps. I sized the wire based on keeping voltage drop under 3% (most low voltage DC cables need to be sized by max permissible voltage drop be it 1% for critical electronics to 3% critical systems such as coolers and fuel pumps 5% to 10% on lighting and non important systems). Based on final cable length (2x positive lead and current must make a round trip from battery, I calculate a 0.38 to .44 volt drop with pump under load. This is marginal and I should have gone 10g to be safe or a better yet to have rewired my old cable run to my rear fuse box. I used 4g but ran it through a 75amp relay so I could shut down all rear power outlets. I don’t recall what I was thinking with that line of reasoning as it has cause me to run dedicated 10g circuit to power my ice box. What we learn for the next time, but may never have chance to do again.
Full disclosure. I haven’t even purchased the LRA tank yet as I’m torn between it and piecing together the oem auxiliary; however as I was running wiring for rear & roof lighting and cooler, I decided to purchase all the electrical parts for an LRA tank and install now.
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kcjaz
SILVER Star
I just used the wire that came with the tank kit. Believe it was 10 awg. I've transferred fuel a couple times now. If there is any pump performance hit for voltage drop with the it isn't much if anything at all. The Airtex pump seems to be providing its rated flow rate of 72 gal/h (1.2 gpm). I transferred at 1/4 on the main tank and it took 15 min to fill it. .75x24/15 = 1.2 gpm.
dubyahard
SILVER Star
I didn't see a better thread to ask this, but for those of you familiar or who did it yourself, how long does the install take? I've watched the video from OTRAMM and it doesn't seem too difficult.
Did anyone land on which higher quality/speed replacement pump is available now? Sounds like the Airtec one is NLA or not as good as it once was. So it's the $$$ Holley or bust?
()
Did anyone land on which higher quality/speed replacement pump is available now? Sounds like the Airtec one is NLA or not as good as it once was. So it's the $$$ Holley or bust?
()
CharlieS
GOLD Star
- Thread starter
- #67
I found that video from Otram very helpful.
I did mine on a weekend, took most of a day. Wasn't especially difficult overall. A bit of hassle doing it solo, but a hydraulic lift table helped a lot.
I have the original Facet pump and an Airtex(?) on the shelf. I was looking for higher volume.
The Holley looks great. But it was a lot more money, so I couldn't bite the bullet.
They should all work, some just faster than others.
Anyone ever make your setup so you can easily pump fuel to help out someone else on the trail?
I did mine on a weekend, took most of a day. Wasn't especially difficult overall. A bit of hassle doing it solo, but a hydraulic lift table helped a lot.
I have the original Facet pump and an Airtex(?) on the shelf. I was looking for higher volume.
The Holley looks great. But it was a lot more money, so I couldn't bite the bullet.
They should all work, some just faster than others.
Anyone ever make your setup so you can easily pump fuel to help out someone else on the trail?
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BadReligion
SILVER Star
I consider myself semi mechanically inclined and it took me a full weekend, one day for install, and the second to finish plumbing and wiring, on the 12.5. It is a tight fit. I also did it myself and without a lift. With a lift and a friend, and that will make everything a bit easier. The OTRAM video plus LRA instructions and this thread give you pretty much everything you need:
Cruiser Brothers 12.5 LRA Aux Tank Install in LX570
I must have been good cause Santa brought me a LRA subtank for X'mas. Kicking off the install today, paying close attention to potential LX570 installation issues. Talking to Georg and Ward, this might be the first so I'm a going in a bit tentative. Potential issues really is down to the AHC...
forum.ih8mud.com
I wouldn't worry so much about the pump. Most complaints are noise and speed. I don't care about either. I'd run it until it fails, then upgrade. If any, make sure you upgrade the filter to the breather from the canister.
These tanks seem pretty popular now so lots of people have tackled installs. If you run into any problems, post up and I'm sure you will quickly get steered in the right direction.
Also, don't tap into any existing factory wiring for a 12v ignition source. Use an "add a fuse." Much cleaner and reversible install.
dubyahard
SILVER Star
Thanks y'all. This is what I needed to know. Moving to Colorado Springs soon and the extra range sounds nice. Anyone in the Springs available to helpI consider myself semi mechanically inclined and it took me a full weekend, one day for install, and the second to finish plumbing and wiring, on the 12.5. It is a tight fit. I also did it myself and without a lift. With a lift and a friend, and that will make everything a bit easier. The OTRAM video plus LRA instructions and this thread give you pretty much everything you need:
Cruiser Brothers 12.5 LRA Aux Tank Install in LX570
I must have been good cause Santa brought me a LRA subtank for X'mas. Kicking off the install today, paying close attention to potential LX570 installation issues. Talking to Georg and Ward, this might be the first so I'm a going in a bit tentative. Potential issues really is down to the AHC...
I wouldn't worry so much about the pump. Most complaints are noise and speed. I don't care about either. I'd run it until it fails, then upgrade. If any, make sure you upgrade the filter to the breather from the canister.
These tanks seem pretty popular now so lots of people have tackled installs. If you run into any problems, post up and I'm sure you will quickly get steered in the right direction.
Also, don't tap into any existing factory wiring for a 12v ignition source. Use an "add a fuse." Much cleaner and reversible install.
If you're hedging on upgrading your pump in the future, you will want to go ahead and upgrade the fuel lines on initial install. I can't speak for any of the other fuel pumps, but the Holley has a specified minimal I.D. line it needs to function. Otherwise, you're fighting physics of fluid flow through a tube, etc.I consider myself semi mechanically inclined and it took me a full weekend, one day for install, and the second to finish plumbing and wiring, on the 12.5. It is a tight fit. I also did it myself and without a lift. With a lift and a friend, and that will make everything a bit easier. The OTRAM video plus LRA instructions and this thread give you pretty much everything you need:
Cruiser Brothers 12.5 LRA Aux Tank Install in LX570
I must have been good cause Santa brought me a LRA subtank for X'mas. Kicking off the install today, paying close attention to potential LX570 installation issues. Talking to Georg and Ward, this might be the first so I'm a going in a bit tentative. Potential issues really is down to the AHC...
I wouldn't worry so much about the pump. Most complaints are noise and speed. I don't care about either. I'd run it until it fails, then upgrade. If any, make sure you upgrade the filter to the breather from the canister.
These tanks seem pretty popular now so lots of people have tackled installs. If you run into any problems, post up and I'm sure you will quickly get steered in the right direction.
Also, don't tap into any existing factory wiring for a 12v ignition source. Use an "add a fuse." Much cleaner and reversible install.
I'm going on about 15 months on my regular (LRA included) fuel pump. Zero issues so far. Definitely fills slower than Holley fuel pump would, but it doesn't require a relay, etc and keeps it functionally simple as it can be. If you want a Holley fuel pump, I've got the one I was going to use still BNIB I'll sell to you for "special price, my friend."
This is great to hear from you guys.
I am going to drop my tank to replace my Vapor Canister due to frequent codes that just started a few months ago. Can you expand on the filter to the breather with a part number and what you did?
I was thinking of upgrading the pump, but seems like little value to do that now based on what I am reading here. Curious if there is one that works with existing wiring vs adding a relay? May be good to have as a spare.
Christo did tell me he didn't like the fittings whem he installed it, but has been working reliably for six and a half years.
I also plan on wrapping the tank exhaust and possibly fuel lines while I am in there to reduce heat transfer
I am having the classic evap codes with 4LO light and Maint light on. Good to alwways have an OBD reader
