Well, it's been awhile, so I thought I'd update the thread a little. Amongst all of my toys and yard equipment is a side-by-side I picked up used a few years ago, cheap on CL because it had a blown motor. I rebuilt the 13hp Honda GX 390 back then with a rebuild kit from eBay, it worked OK for a few years until this past fall//winter when it started smoking pretty bad and making some interesting noises, so it became my winter project. I was just going to pull the motor and rebuild it again, but once I had it out I decided to clean up the chassis, paint the hood and bedsides, apply bedliner to the inside of the bed, paint the wheels, etc...it kind of snowballed.
Shop is getting crowded with the Bronco over in the corner, the Porsche next to it, my '01 GMC, '66 C10, my son's XJ, not to mention all the ATC's you can't see in that pic. I need to rearrange things a little, and find another 30 or so old tin roof panels to finish covering the walls.
The motor problem turned out to be one of the the piston pin clips had come out of it's groove, allowing the pin to walk sideways and start gouging a nice groove into the cylinder wall. Since the cylinder is part of the engine case on these Honda GX engines, that meant a new case, as well as a piston, pin, rings, gaskets, bearings, etc. I couldn't resist painting the engine cooling shroud to match the body.
Just when I was 99% done with that project, I was gifted a couple of Honda ATV's from my brother in law, out of the blue. He and his ex used to ride a lot, but since they split up years ago the quads have just been sitting - and he just wanted them gone. I was happy to load them up and bring them back to my shop before he changed his mind. I didn't really need any more projects, but I couldn't pass these up. They ended up being good projects to work on during the "stay at home" weeks of the Covid-19 mess.
They were in sad shape, having been ridden hard and put away wet (literally) - they rode some back country trails, lots of mud, sand, dirt had found it's way into everything and then dried, plus several years out in the weather didn't help. They had installed some homemade snorkels, which gives an idea of how deep these quads went swimming/mudding. Both had river bottom sand and mud in the battery wells, storage compartments, air boxes, even found some in the carb float bowls. They both had decent aftermarket wheels and tires, and the Rancher had a lift kit.
The older quad ('96 Fourunner) was the worst, the rear axle differntial was one solid mass of rust and grit. Water and sand had got in and destroyed the bearings, the pinon wobbled around and destroyed itself against the ring gear.
The master cylinder for the front hydraulic drum brakes was seized, the brake hose was clogged, the wheel cylinders were stuck, the electrical system had some hack job wiring repairs, and the foot pedal for the rear cable drum brake was missing. Surprisingly, the fenders were not cracked or faded, the engine was intact and in good shape, even had new, clean oil in it. After cleaning out the tank, carb, and fuel system, cleaning the spark plug, and installing a new battery, I got the engine running and was able to put the trans through all gears just to check them out. Then I tore it down to the frame, painted it, replaced the ball joints, tie rods, wheel bearings, master clyinder and hose, rebuilt the wheel cylinders, completly rebuilt the entire rear axle (ring+pinion, bearings, shims, seals, brake shoes, etc), repaired the wiring, and cleaned evertyhing up. It turned out pretty good and is fun to ride - only 2wd, but it goes places you wouldn't think it can.
The newer quad ('06 Rancher) I was able to get running with a new carb, battery, flushed the fuel system, adjusted the valves, changed the oil, and some minor electrical work. It still needs some major service (ball joints, CV's, brakes, a good cleaning) but it runs OK and I'm using it to clear trails on the back of my property for now.