You would be best bypassing the thermostat, in effect leaving it open permanently. Anyway to jam it open ????
That way, the engine would be permanently cooled with water, instead of being starved of any cooling.
Just allow the bike to really warm up well before riding off to prevent any cold seizures (unlikely but why risk it).
I wouldnt like my engine uncooled in the heat of South America. It's not meant to be run without water cooling and you could do some real permanent and expensive engine damage.
I've never heard of thermostat housing cracking before, but as its a BMW F650, I'm really not surprised !!
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Did some trips.
Rode some bikes.
Fix them for a living.
Can't say anymore.
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