Horror story

[kirrbby]

I'm wondering where the oil went too. I did realize the other day that this engine was missing the top tappet cover. That could maybe explain how it could have filled with water...whether flood, ocean, swamp, or even just rain over years of sitting. But the oil would float on water...it would have had to ALL float out thru the crankcase vent tube to escape...seems unlikely to me...but I guess it COULD happen.

Maybe...
A fisherman drained all of the gas and oil so he could use this bike as a anchor..?
THAT, could happen too.

 

[fatcaaat]

The cylinders are cast but I don't suspect they will crack like you hope them to. That's why I suggest heat. It would be fast and not require much energy. But as them being cast they should cut easy with a sawzall and the right blade.

 

[Robert thran]

What about a hole saw drilled straight down on the piston dome?

 

[kirrbby]

VICEROY!!
Ahh...I mean victory.

 

[kirrbby]

Well I can definitely recommend splitting the cylinder for a situation such as this.
I used a 4" angle grinder, but a 6" would be better. Cut the cylinder near center, and down as close as possible without cutting into the engine cases. As fatcaaat said, a sawzall or ? could work too.
Then I just drove the chisel into the cut to wedge it open.
Cast iron doesn't give much...no bend, or stretch to speak of...it just breaks. It only took one or two cautious whacks with the hammer to get each side to crack.
Once it was cracked...I rapped on the crank to open up the cases...maybe ¼" then I could pull the right and left side cylinder halfs out and off.

 

[kirrbby]

Then I had a little, maybe hour long battle to get the left side case pulled free.
I SHOULD have sanded the shafts clean before I started. Countershaft, and shift shaft. I didn't, and that was a mistake for sure. They both fought me, but it was the shift shaft that turned out to be the biggest problem. If I'd have sanded them before I started trying to drive them out of the left case...it would have shorted my battle considerably.
But they cam out, slowly. I just beat them toward the right side case until they were free of the left side case.

Once I had the left side off...well I was pretty proud of myself. It seems to be intact, with no breaks, etc, at first glance.
So then I was able to knock the stator plate out, working from inside the case, I drove it out. But then I could see the cancer that was hiding under there. It's pretty ugly there at the cam chain tensioner. And where the crank bearing seats into the left case too. The white death...cancer has taken over the area.

 

[Gary]

To think at one time it made someone very happy

 

[fatcaaat]

Yikes...now that I see it...this one def beats the one I had for sure. I was mostly concerned with the one I dealt with was the pock marked areas where the aluminum actually was missing. It takes a serious level of neglect to achieve pockmarking . However this particular engine you are showing might actually be the worst one I've seen.

 

[kirrbby]

lolol...ya, I know how to pick em...gifted you might say. In my first post I said I was impressed by just HOW rough and rusty this bike was. It's still impressing me too. This IS the worst engine that I've had. I think you'll be impressed again too once I've cleaned up the engine case(s). There will be a LOT of missing aluminum. It poured out onto the floor after that first round of disassembly.
But...I DID save, what's left of, the matching engine case...lol. At least so far I did. Still have some screws to extract...I'm not quite out of the woods. The case # is only about 30 off of the frame vin.

But I'm on vacation next week. I won't be doing too much with this bike until after that.
But I might get some good pics posted of the frame. It's pretty rough too.

 

[Robert thran]

After you clean the case . Weigh it against one with no corrosion and see how many grams less it weights…then you can sell on eBay as a “ lightened race case” lol. Good job busting that thing apart!!! I knew you could do it … not 100% sure why but the hope the case is good to match with the frame or the challenge?..p.s. I still need that 3rd gear if you think it might bead blast clean and not be a 3 hour job getting it off…lol

 

[Clayton]

That’s the roughest Iv ever seen, that bike has to have been submerged in salt water and never properly drained/cleaned out after. Iv take apart motors that have been sitting out in the pasture for years with random covers missing and have never seen any thing like this before.

 

[ktheake]

Archeology dig ? I love that color -