LRA 40g Main Tank '05+ Install (1 Viewer)

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

The check engine lights are still on, I do get a whiff of fuel every now and then and I noticed some spillage this morning at camp. I was driving up some steep/rocky switchbacks yesterday evening with 3/4 tank. The LRA tank doesn’t have the one way flapper valve that the OEM tank has in the fill port, fuel can make its way back up and out the filler if you’re too full/ driving too steep. Just another reason why the factory fill/vent should be retained. It’s still driving perfectly though, currently in Pagosa Springs.

IMG_5907.jpeg
 
Last edited:
I really love the concept of this, but I can't get past how low it hangs beyond the frame rails. Maybe you've addressed this already, but do you feel the bottom surface material is thick enough that it can act as its own skid, so to speak? Having driven around on a concave- bottom tank for 2 years, I'm hyper considerate of it now.

Maybe an aux tank in spare tire well is what I should consider.
 
MongooseGA said:
I really love the concept of this, but I can't get past how low it hangs beyond the frame rails. Maybe you've addressed this already, but do you feel the bottom surface material is thick enough that it can act as its own skid, so to speak? Having driven around on a concave- bottom tank for 2 years, I'm hyper considerate of it now.

Maybe an aux tank in spare tire well is what I should consider.
Click to expand...

The tank is thick steel and is designed to be its own skid plate. Depends on how you use your rig but I’ve seen pics of 80’s balanced on their tanks without causing real damage. My 1/2” body lift helps tuck the tank up that much higher, it doesn’t look to low to my eyes but then again I don’t “wheel” my rig like it seems you do. Without the body lift the tank hangs down roughly as much as the OEM muffler does. An aux tank will double your fuel capacity at the same cost but the installation is more complex.
 
MongooseGA said:
I really love the concept of this, but I can't get past how low it hangs beyond the frame rails. Maybe you've addressed this already, but do you feel the bottom surface material is thick enough that it can act as its own skid, so to speak? Having driven around on a concave- bottom tank for 2 years, I'm hyper considerate of it now.

Maybe an aux tank in spare tire well is what I should consider.
Click to expand...
Aux tank in spare tire area is something I've thought about as well, does this exist? I don't even need it to be integrated back to my main tank, would just be nice to have extra fuel stored up in that area that I could suck out if needed, instead of taking up space on my swingouts.
 
I gotta post some pics of my LRA tank soon. It has taken hit after hit without complaining. It has concaved in a bit so it might be a 39.5 G tank now!

MongooseGA said:
I really love the concept of this, but I can't get past how low it hangs beyond the frame rails. Maybe you've addressed this already, but do you feel the bottom surface material is thick enough that it can act as its own skid, so to speak? Having driven around on a concave- bottom tank for 2 years, I'm hyper considerate of it now.

Maybe an aux tank in spare tire well is what I should consider.
Click to expand...

GTV said:
The tank is thick steel and is designed to be its own skid plate. Depends on how you use your rig but I’ve seen pics of 80’s balanced on their tanks without causing real damage. My 1/2” body lift helps tuck the tank up that much higher, it doesn’t look to low to my eyes but then again I don’t “wheel” my rig like it seems you do. Without the body lift the tank hangs down roughly as much as the OEM muffler does. An aux tank will double your fuel capacity at the same cost but the installation is more complex.
Click to expand...
 
Mike NXP said:
Aux tank in spare tire area is something I've thought about as well, does this exist? I don't even need it to be integrated back to my main tank, would just be nice to have extra fuel stored up in that area that I could suck out if needed, instead of taking up space on my swingouts.
Click to expand...

LRA offers aux tanks for the 100 series, I’ve also seen fuel storage tanks that mount to the OEM spare tire winch.
 
I’m drooling over that fuel range. Ugh.
 
GTV said:
I don’t even have to think about fuel until I’m 400 miles in. It’s such a transformative modification to these rigs.

View attachment 3652492
Click to expand...
I am in Durango. Are you still in the area? I would love to check it out, and by the looks of it We could ride!
 
I'm happy to report that the road trip was [mostly] a success! Outside of the occasional fuel smell and check engine lights the truck did great for 2,451 miles. I'm confident that both of those issues can be solved by using the OEM fill/vent section.

I filled up 6 times (arrived home with over 1/2 tank)
Best mileage was 15.1 (equates to a 604 mile range)
Worst mileage was 13.0 (between Boise and SLC, both ways. 80mph limit eats fuel. Still equals 520 miles to a tank!)
Furthest traveled on a tank was 533.7 miles (Santa Fe to Moab)

It's changed the way I drive the rig. The range was so poor before that I was driving extremely gently to try and eek out as much range as I possibly could. Now, if the speed limit is 80, I don't hesitate to go 80. If I need to pass a semi going up hill against a head wind, I don't think twice about it. Pedal to the metal, I've got range to spare. It's actually way more fun to drive now that I use the entire RPM range 😂 And I never get stuck needing fuel in some backwoods town that charges $1-2 a gallon more. It's just so damn easy and worry free.

IMG_5941.jpeg


IMG_5948.jpeg


IMG_5959.jpeg


IMG_5960.jpeg


IMG_5962.jpeg




IMG_5978.jpeg
 
Last edited:
It is possible the fuel smell you had was the normal high elevation vapor pressure issue that plagues most 100s.

Good to hear you are loving the tank. I always say the 40 gallon tank was the best thing I did to my 100 and will be the first thing I do if I ever get another 100 for any reason.
 
  • Like
Reactions: GTV
GTV said:
I'm happy to report that the road trip was [mostly] a success! Outside of the occasional fuel smell and check engine lights the truck did great for 2,451 miles. I'm confident that both of those issues can be solved by using the OEM fill/vent section.

I filled up 6 times (arrived home with over 1/2 tank)
Best mileage was 15.1 (equates to a 604 mile range)
Worst mileage was 13.0 (between Boise and SLC, both ways. 80mph limit eats fuel. Still equals 520 miles to a tank!)
Furthest traveled on a tank was 533.7 miles (Santa Fe to Moab)

It's changed the way I drive the rig. The range was so poor before that I was driving extremely gently to try and eek out as much range as I possibly could. Now, if the speed limit is 80, I don't hesitate to go 80. If I need to pass a semi going up hill against a head wind, I don't think twice about it. Pedal to the metal, I've got range to spare. It's actually way more fun to drive now that I use the entire RPM range 😂 And I never get stuck needing fuel in some backwoods town that charges $1-2 a gallon more. It's just so damn easy and worry free.

View attachment 3658225

View attachment 3658226

View attachment 3658227

View attachment 3658228

View attachment 3658229



View attachment 3658231
Click to expand...

Screw the aux tank. Sweet Surly!! :lol:
 
You must log in or register to reply here.

Similar threads

1
  • Question Question
Breather filter location for a 100 series with LRA 40gal tanks? Main & aux
Replies
0
Views
558
100serieslc
1
B
05 Doug Thorley Headers- 04 vs 05??
Replies
5
Views
685
LJE
LJE
Gnarwgn
Fuse Tap - Main Panel?
Replies
6
Views
651
hoser
hoser
winestonecowboy
Catastrophic Rear Main Seal Failure
Replies
15
Views
2K
winestonecowboy
winestonecowboy

Users who are viewing this thread

Total: 2 (members: 0, guests: 2)

Share this page

Back
Top Bottom