I simplified the cooling system on my ’92 851 955cc motor…
Removed the Thermostat,
Removed the Fan,
Removed the Expansion tank from under the seat, makes it easier to adjust the suspension rocker arm.
Fitted a Corse size Radiator made to order by PACE in the UK, my original genuine Corse Rad’ was quite tatty/almost beyond repair.
…and fitted a plastic bottle cabled tied to the side of the Radiator with overflow pipe fitted into it.
I can see this bottle as I ride.
In cool weather I tape over a portion of the Radiator to keep the temp’ up,
This system works perfectly on my 140 rwbhp 955cc motor and it weighs less.