TT600 59X - engine type

[Goro]

Hello all
i'm restoring a this bike, build in 1987

When I bouught it 25 years ago, the owner gave me also a full engine as spare

Under the bike there is an engine series 34L. The spare that I have is 34K01

Anybody can tell me the story of these engines and if can exchange the parts if i need to replace something

thx for the support

[Scumfrog]

The 59x had 59x engines but these were prone to crankshaft bearing failure. So many of them had different engines installed.
The 34k is the earlier tt600 engine and I think more reliable, as is the xt600 34L tenere engine.
Probably most parts were interchangeable but the tt600 was 6V and had a hotter cam.
Your 34L engine may have had the 6v system installed to suit the bike. I would go with the 12v setup and more road oriented 34l engine if you have it.
If you title the thread 34L you might have a higher chance of answers on here.
You can also try the TT600 enthusiasts group on Facebook.

[Goro]

many thanks for the clarification and suggestions also