2 spare engines ready for my Z1000`s

As I mentioned before, I bought two partially disassembled Z1000 engines last year to serve as spares for my Z1000 A1 and A2 models.
One engine, i have completed this february, without any test run. -Was in good measurement,(...both engines were disambled stored about the last 35 years)
At both engines , i`ve equipped them with my refurbished timing-chain gears, nwe rubbers and sliding gear for the timing chain, chains itself been like new!!! Big surprize!

This other, i have cylinder bores lighlly x-honed, / was already in full measurement at the bores.....
Last Friday, a friend and I fitted the pistons—equipped with new rings—into the cylinders (I had already fully overhauled the cylinder heads over the winter: lapped the valves, installed new stem seals, etc.). We mounted the head, finished the rest of the assembly, and then ran the engine on his dyno today.
Everything looks good; the engine runs really well and without any issues!
Now, if the worst happens—say, a major failure mid-season—I can quickly swap in a replacement engine. It’s always a great feeling to have that peace of mind!

Now, they both need a little cosmetic job on the outside of their cases,...Than conserve them and storage...



 

Nice having several spare motors. When I purchased my 1977 KZ1000A, it came with a second KZ1000A totally disassembled. I intend on re-assembling the second motorcycle and selling it... 

Hello Michael,...but wouldn't it also be nice to potentially have a second Z1000 after the assembly?
 

I remember my first triple 250 at 16 yo when I had to change rings in the middle of summer ! That was the longest week of my life...LOL

That’s exactly what I mean
Whenever my scooters aren't working right, are broken, or aren't ready for use, I always feel slightly "paralyzed"... I know that sounds crazy, but that’s just how it is for me... Today, back then—always...


To get back to the history of those two engines:
I managed to buy both of them last summer for very little money; they were both partially disassembled—meaning the cylinders and heads had been removed. I couldn't figure out *why* the cylinders and heads had been taken off; I got the impression the seller simply had an urge to explore or was just purely curious about what the inside of such an engine looked like. In any case! -
Judging by the signs of use, both of these motors look as though they haven't been in operation for long! -Original piston-ring pressure was high, no wear on pistons or cylinderbores, valve shimming between 2,55 to 2,70 !!!
I didn't find any damage at all—quite the opposite: the cylinder bores and pistons were still well within tolerance limits. Neither head showed any of those cracks between the valve seats and spark plug threads that are so common here in Germany,  (.resulting from prolonged driving on motorways at high speeds and high engine speeds) - And both timing chains were still as taut as if they were brand new. The engines had been properly stored—covered and filled with oil—for about 35 years or more...-
.So, the financial outlay for my "parts investment" was very low:
Two sets each of:  New piston rings from "Cruizinimage," , rubber rollers, guide rails, rubber buffers for the timing gear shafts, my refurbished timing sprockets, cylinder head and base gaskets, plus oil and filters...-
The rest was just a straightforward job requiring a bit of elbow grease. The only minor issue was a small chip missing from an outer cooling fin on one of the cylinders; otherwise, there was no visible external damage...
Sometimes, you just get really lucky with a "basket" purchase... I am really happy !!!