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Does the Stelvio have a Thermostat?

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Gazdok

Gazdok

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Hello,

As per the title, I am wondering if there is actually a proper thermostat fitted to the radiator. I was riding in 3 - 5°C and I noticed that at speeds of 40 MpH and above the temperature was only ever sitting at one bar. This rose when I got into city traffic and the display was rising, but never sat at the centre.

Is this normal? Is my Stelvio faulty?
Should a modern bike not control its temperature within a very narrow margin?
 
Looking at the parts list for my V100s (which I think is the same style engine as the Stelvio) there is a thermostat #41 in the housing that sits between the cylinders. There is also a coolant temp sensor there which informs the ECU. My bike gauge sits at three bars and occasionally goes up to 4 in traffic. Mind you that's in temps of +25C. The fan is thermostatically controlled from the ECU via a relay with info from the temp sensor .
 
Gazdok said:
Hello,

As per the title, I am wondering if there is actually a proper thermostat fitted to the radiator. I was riding in 3 - 5°C and I noticed that at speeds of 40 MpH and above the temperature was only ever sitting at one bar. This rose when I got into city traffic and the display was rising, but never sat at the centre.

Is this normal? Is my Stelvio faulty?
Should a modern bike not control its temperature within a very narrow margin?
Click to expand...
During periods of cold weather, you may benefit from blocking half the radiator. This was common on older vehicles where the radiator cooled too well and the engine blocks had good air cooling as well.
 
Our cars are watercooled.
No matter whether we drive in -15°C or +40°C, the cars thermostat sits bang in the middle at 90°C.

John, you are not honestly saying, that on a modern, 2024 bike, I have to resort to DIY gigs to control the engine's temperature?

I know, it is a Moto Guzzi, so has the reputation of a tractor, but....
 
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Surely this is a design flaw. This is not the latest wisdom on water cooled engines, is it?
 
Gazdok said:
Our cars are watercooled.
No matter whether we drive in -15°C or +40°C, the cars thermostat sits bang in the middle at 90°C.

John, you are not honestly saying, that on a modern, 2024 bike, I have to resort to DIY gigs to control the engine's temperature?

I know, it is a Moto Guzzi, so as the reputation of a tractor, but....
Click to expand...
True in that temp range but up here in Canada with winter temps -30 or -40( F or C)some cars/trucks won't warm up to normal operating temps and winter fronts or a piece of cardboard are used. Of course you would have to be crazy to ride a Guzzi in anything that cold!
 
My car gets up to 90°C at -15°C and sits there once warmed up even at motorway speed.

How do the japanese and other european water cooled bikes behave in the cold?
 
Gazdok said:
My car gets up to 90°C at -15°C and sits there once warmed up even at motorway speed.

How do the japanese and other european water cooled bikes behave in the cold?
Click to expand...
This is a Guzzi forum. We don't care how Japanese or other water cooled bikes behave. Thread is locked.
 
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