Thermostat question

[RoffRider]

would just moving the thermostat to the other side of the water pump(between coolers and engine) solve the "cold shot" problem?

 

[ottawaair]

here we go..........

 

[RoffRider]

here we go..........

what?

 

[Snodawg]

 

[roni87]

t stat

http://www.snowestonline.com/forum/showthread.php?t=339282

Lots of good reading here, better upgrade to premium to get the whole story.

 

[RoffRider]

http://www.snowestonline.com/forum/showthread.php?t=339282

Lots of good reading here, better upgrade to premium to get the whole story.

yes i know...but wouldnt the thermostat being placed on the other side of the motor limit the cold water hitting the engine all at once? that would be like a 5 dollar upgrade...plus no waiting for parts

 

[mtncat1]

I don't think it would open soon enough with only cold water from the heat exchangers, I personally don't think and have had any issues with the cooling system on a pro, I have had 3 of them myself and ride with at least 6 others that have em. nobody I no has had an engine failure ether. just my opinion if you want to do some thing for piece of mind that up to you.

 

[ottawaair]

yes i know...but wouldnt the thermostat being placed on the other side of the motor limit the cold water hitting the engine all at once? that would be like a 5 dollar upgrade...plus no waiting for parts

The problem is that when you shut down the engine, everything warms up.... Right.

So, the t-stat is wide open because the coolant is above its opening temp.

So, when you pull the rope and coolant starts to flow from the coolers, the stat is wide open.
The cold coolant has hit the motor well before the stat has time to react to the cooler coolant.

So, in effect, the cold shot has already taken place.

As stated multiple times in the other thread, this is just a theory.

There is too many variables for this to be a real issue.

Running temp of sled at shut down (was it already running hot)
Length of time before restart.
Is tunnel coolers sitting in the powder or just trail side with no snow contact.
did you start it and go, or let it idle.

And lastly, Has anyone really suffered from a "cold shot" failure.
NOT, a cold sieze.... which is a different story and is a real thing.

 

[tinkerjohnson]

The problem is that when you shut down the engine, everything warms up.... Right.

So, the t-stat is wide open because the coolant is above its opening temp.

So, when you pull the rope and coolant starts to flow from the coolers, the stat is wide open.
The cold coolant has hit the motor well before the stat has time to react to the cooler coolant.

So, in effect, the cold shot has already taken place.

As stated multiple times in the other thread, this is just a theory.

There is too many variables for this to be a real issue.

Running temp of sled at shut down (was it already running hot)
Length of time before restart.
Is tunnel coolers sitting in the powder or just trail side with no snow contact.
did you start it and go, or let it idle.

And lastly, Has anyone really suffered from a "cold shot" failure.
NOT, a cold sieze.... which is a different story and is a real thing.

exactly its not really an issue to worry about just bring the temp back up before you put the hammer down it takes about thirty seconds to get back up to temp. i put on the doo stat it helps with this a little and engine runns a little cooler also