Seat coolers are awesome. They work great, and provide a sweaty ass relief much faster than it takes for the A/C to cool the truck down after it's been parked in the sun for a while. Installation was not difficult at all. Just tedious and time consuming.
Interesting. I could not find that combination in the parts catalogs. I'll need to have another look.
Most of the sprigs for the 80 series are NLA. I found a set of NOS front ones in a random warehouse in Europe.
PTO+Turbo diesel springs are different (heavier) than the the electric winch+TD ones.
Here are my thoughts on weight..
Most people here tend to think that trying to keep the weight down on a truck is a waste of time/money, but I've followed and spoke to a lot of people that do REAL "overlanding" (hate that term) with the 80 and pretty much all of them agree that extra weight sucks big time. It might not be a big deal if you just use your truck for an occasional wheeling trip, but when you're travelling for months into remote areas and third world countries, weight makes a HUGE difference.
Extra weight makes the truck handle like crap. It severely reduces braking performance (ever heard on this forum how "80 series brakes are under-powered" ? Well, they arent - they are only under-powered for an overloaded rig). It significantly increases fuel consumption. It increases wear on suspension and drivetrain tremendously. It decreases off-road performance and increases the chance of breaking things. I could go on..
Every 80 that I've owned before has been "overweight". Since my main goal with the truck is ultimate reliability/dependability, i will attempt to keep the weight down to absolute minimum and use ultra-light materials whenever possible, without sacrificing function.
As far as metal choice for armor (bumpers/sliders/skids).. Let's look at some metals/alloys that are out there, and their specific strength (tensile strength to density (weight) ratio) :
1) Mild steel. This is what most of the armor is built from. Density 7.9 g/cm^3. Tensile strength 440 MPa. Specific strength 55
2) 6061-T6 Aluminum. Far less common, but popular in some parts of the world for vehicle armor. Density 2.7 , Tensile strength ~300, Specific strength 115
3) 7075-T6 Aluminum. This material is great for some things, but it has one huge drawback for armor - it's absolutely not weldable. It can still be used for some things where welding is not required. Density 2.8 , Tensile strength 570 , Specific strength 204.
4) Grade 5 titanium. This material is readily weldable (although requires special techniques). Density 4.7 , Tensile strength 1150. Specific strength 245
As you can see, Gr5 Ti is BY FAR the best choice in terms of material properties. Its' strength to weight ratio is nearly 5 times higher than mild steel. In simple terms, this means that you can make armor from it that is just as strong as steel, but at nearly 1/5 of the weight. This would add up to HUGE weight savings when we're talking both bumpers, sliders and possibly skids. Literally hundreds of pounds... It also has higher yield strength than steel, and completely corrosion-proof (in automotive environment). The only major downside is material cost..
However, considering that i will be fabricating it myself, i expect the final cost to be in line with what premium steel bumpers sell for.
For sleeping platform/drawers, same concepts apply. Frame from either 7075 Al or Gr5 Ti, and panels from Carbon Fiber (which has incredibly high strength to weight and stiffness to weight ratios. Many times higher than materials that are typically used for these types of things such as plywood). I even found a company that has a huge selection of specialized drawer slides. They can make slides from 7075 aluminum that will weigh 1/3 of regular steel slides with the same load rating. And they are actually surprisingly affordable.
Sliding Systems - Heavy duty drawer slides, telescopic slides, drawer runners, rails,