The Honda SL100K2

Well I finished The Honda SL100K2. It looks really good and I’m very happy with the way all the cosmetics turned out. It really did wind up making me work much harder that I really wanted too but I wound up with a brand new looking old motorcycle that would start on the first kick.

Right hand view of the Honda SL100K2
<The Honda SL100K2 of 1972>

It fought me all the way to the bitter end, I thought I had it running perfectly but then the very last part that I had not replaced yet crapped out on me. The original stator worked well at first but after I let the bike sit for a month or two between the VJMC National Rally and the Vintage Honda Rally at the Copperhead Motorcycle Lodge it quit on me and killed the battery.

left side view of The Honda SL100K2 fully restored
<the Honda SL100K2 of 1972>

First I tried a reproduction stator from eBay but the wiring colors didn’t match and the appearance of the wiring plug and sheathing didn’t match the original so I put it on the shelf and ordered a N.O.S. replacement from David Silver Spares & put on it. If anyone in the Continental U.S. would like to buy the reproduction stator from me, I’ll take $50 shipped just to get rid of it.

In the end I accomplished my goal to perform an award winning restoration from one of the biggest turds to ever come into my workshop. This little Honda SL100K2 picked up an Award of Merit at the 2019 VJMC National Rally and another at the 2019 Vintage Honda Rally.

award wing restored Honda SL100K2
<award wing restored Honda SL100K2>

What’s next for this little machine? Well that’s up to the new owner as I sold it during the Barber Vintage Motorsports Festival in October of 2019. I’ve got several new projects in the works and needed some money for them. So keep your eyes open for the next Motopsycho project bike.

Project Honda SL100K2 Update

Honda Sl100K2

This little Honda is perhaps the ultimate junker to jewel story that I’ve ever been a character in. When I first brought it home  it didn’t seem that bad, a rolling frame, couple of boxes of parts and an engine that I assumed was stuck from sitting but should’ve been easy to get freed up with a new set of rings. Initially I planned to do a top end job, reassemble it and flip it to someone else as a running restoration project. I still don’t know what the hell happened. Now my quick and easy 1972 Honda SL100K2 flip has become a full on high level restoration that I can never hope to ever sell for enough money to recuperate the dough that I have in it.

1972 Honda SL100K2 before
as purchased, the rest of it is in boxes inside

It started with the fuel tank which looked really great until I started sanding the paint off of it and discovered that although there was no rust visible rust that I could see through the filler neck, the entire lower rear end of the tank was full of pinholes that took a few hours and a couple of brazing rods to fix. Oh well the stupid gas tank looks okay now and I’ll be putting the paint on it soon.

The engine was another complete nightmare. What I had hoped was a simple case of an old engine stuck from sitting turned out to be a case of one left out in the weather for decades with no sparkplug in the head to keep the water out. To make matters even worse the piston was at exactly top dead center. Finally I turned the entire engine upside down on top of a bucket of Evaporust with the cylinder submerged for about a week before it loosened up enough that I could beat it out of the bore with my big fucking hammer. Thankfully I didn’t bust the connecting rod or ruin the crankshaft in the process.

At this point I was already spending a fortune so the decision was made to keep this motorcycle and turn it into a full on restoration project that looked as good as possible. The engine has a lot of new old stock parts including a new cylinder & piston, valves etc.

1972 Honda SL100K2  rear wheel before
Don’t forget I do vaporblasting! This is the brake panel that matches this hub.

1972 Honda SL100K2 rear wheel after
new rim new spokes lots of vaporblasting & polishing

Not going full into all details here but this has been one of the most frustrating projects I have ever done. It seems like every other bolt either broke or rounded out & had to be drilled out & replaced. Several replica replacement parts were sourced from overseas that turned out to be such crap that I threw them away and ponied up the cash for real Honda NOS parts. As many original parts as possible have been refurbished and are the subjects of several previous posts here. I’ve even fired up the engine and it runs like a new one.

It really does run as good as it looks!

Last week I put it all together so that I could see what parts and hardware still needed to be ordered. This week I took it back apart so that I can block sand all the sheet metal again and finally get around to spraying the metallic green paint. You’ll see it here first when it’s done.

Honda SL100K2 almost done.
Honda SL100K2 rear