This week we modified the two tire clearance warts on the lr3 chassis. Removed/changed the nub behind each front wheel. Moved the hvac lines at the front of rear wheels as well as changed the body flange encroaching on the rear wheel clearance next to the hvac lines. For those of you who are not familiar with these tight spots, these are behind that bulge in the rear fender liner at about 10 o'clock when looking at driver side wheel.
My purpose for these changes:
1- winter, allow more room for 265/65x18 BFG + RUD 4x4 snow chains. Or I would enjoy a large studded tire for pure winter excursions northbound without worry about contact with body/frame/fender liners
2- summer, allow more for obvious larger tire that increases ground clearance, sidewall for lower air pressure
3- overall size for greater range of tire choices
4- plenty of clearance at all articulations.
5- larger tire on the cross country camping trips will help with fuel economy based on my experience thus far. Obviously there is a break point where too large starts to have negative effect as well as too aggressive a tread pattern. I plan to only use either the BFG AT or the GY Duratrac.
- When I tested the Duratrac 275/65x18, vehicle set to normal ride height, it would rub the rear wheel fender liner at the above noted tight spot even when hitting a dip on the highway at speed and loaded. I could hear it and of course see the scrapes upon inspection. The modifications will solve this problem. I did not want to rely on always driving in a lifted mode simply to avoid the rubbing. The lower ride height is safer and improves highway handling as well as requiring less air/pressure over the long periods of road trips which in turn runs the compressor a lot less. The above fix will be a treat going forward, especially with the 2nd fuel tank. Using ethanol FREE gas (pure gas), and nothing on my roof, my mpg was 18+ and I managed to only stop for fuel 4 times in over 3000 miles and never had a worry of where the next station might be. I was concerned that the 200 lbs of RS sliders would bring that back down but I do not think they will as it's less about the weight than it is aerodynamics I'm finding. The empty roof made the huge difference. I may try a Maggiolina on two cross bars next. The Hannibal rack plus ARB RTT is a major noise and mpg killer as well as being lots of weight up high. The LR3 almost felt nimble on the twisting mtn roads without all that. The RTT will find it's way onto an adventure trailer at some point that I can leave behind at a camp site set up while going off each day in the vehicle.
The current work list also includes the following:
1- revised on board air situation. Old arb compressor was located under right side similar to how factory compressor is under left side. Here it was exposed to elements and died an agonizing death. A new high output version has been located under the bonnet along with air outlet and on/off switch. The old location for switch, outlet, and pressure gauge have been retained functional at left rear cargo area side hatch as well as the reserve air tank I had mounted under right side of vehicle between sill and frame (also similar to how factory tank sits under left side. It is in fact a 2nd factory tank using the factory mounts) We used brass fittings for all connections.
2-we added a couple more 12v sockets that like my other extra 12v, run directly from the 2nd battery, an Odyssey 2150. All of the factory reading lamps and outboard dome lamps run from the 2nd battery as well as inset lamps in the upper cargo hatch door so that they illuminate the tail gate area for cooking, gear sorting, etc. 2, one on each corner of the hatch. My hatch has an interior release switch too
3-we flushed all the fluids including differentials and transfer case, transmission, etc.
4-installed new 2nd fuel tank pump and filter. extra pump will be part of emergency kit tucked away.