Thats some good temps your geting there Peter.
I think your idea of enlarging the air bleed hole to allow a little more circulation when the themostat is shut is perhaps the way to go.
Though my bike has been running really well with the higher temps I'm starting to think that my bypass might perhaps be unecessary. I have noticed on some cooler days that the coolant temp has started to drop away.
I plan to put an inline tap in my bypass pipe and experiment with ajusting the flow through it.
I agree, the coolant system is certainly able to cope with no problem. I wonder if its cooling capacity is in fact too large.
