Tropical TR
Jedi Hopeful
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This topic has been discussed in some way many times and there are different opinions about the bypass with a sleeveless thermostat: to block or not to block, partially block, or it doesn't matter
However, I understand at TR4A time the Triumph engineers opted for an un-sleeved thermostat with a reduced bypass passage in the housing. This means a constant, although reduced, flow of coolant via the bypass, which some TR3 folks approximate using the pipe plug with a drilled hole.
If the TR engineers found that appropriate for TR4A, why would that not be right for TR3?
If one accepts the need for such a fix with a plug, would the drilled hole size equal to the TR4A bypass not be best? Does anyone know the TR4A bypass hole size?
I know discussion of this topic can get "heated".
However, I understand at TR4A time the Triumph engineers opted for an un-sleeved thermostat with a reduced bypass passage in the housing. This means a constant, although reduced, flow of coolant via the bypass, which some TR3 folks approximate using the pipe plug with a drilled hole.
If the TR engineers found that appropriate for TR4A, why would that not be right for TR3?
If one accepts the need for such a fix with a plug, would the drilled hole size equal to the TR4A bypass not be best? Does anyone know the TR4A bypass hole size?
I know discussion of this topic can get "heated".