Engine temp for new Viper

[Switch07]

What is the normal operating temp of a stock viper. I'm hearing 165 to 180. That seems high to me since my 600 Rush ran at about 130 to 135.


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[tapex_07]

Don't forget we're talking about a 4 stroke 3 cylinder vs a 600 2 cylinder... plus the coolers on these sleds are much smaller than on your Rush.

 

[shagman]

Thermostat opens at 167 degrees. Mine runs at 161-165 most of the time. 3300 miles last year.

 

[shagman]

i would say my thermostat is opening at 161. or gauge is off a bit..

 

[FAMILYMAN]

If your natural aspirated viper pushes 180 pull over shut it down and take a break. I think 160-170 IMO.


2014 viper, mpi
2009 Phazer 144"

 

[Mtnviper]

Mine usually runs in the low to mid 170's. Most of my riding is mountain/boondocking.

Bill

 

[TestMaster]

This is a 4 stroke and they run hotter than two strokes. The radiator does not kick in until 190 +\- 2 degrees. The thermostats on cars are set at over
200 degrees.

I have 2 vipers and regularly saw the radiator kick in at 192-193 and pull the temperature down when we were riding from home to the trails. Never saw 195 degrees but I know there is an overheat protection built into the system. I'll go on the service manual and look for a number but I believe it's 200+ degrees! If I can't find it in the manual I'll call my dealer and get it from them.

 

[subaru2006]

Unless there are changes for the 15. This is from the service manual.

Thermostat opens at 167*f
Light comes on 221*f
Light flashes and fuel is cut at 230*f but not as long as your on the gas.

With that said mine runs below 167* while riding but soon as you stop temps go up. Soon as my fan kicks on if I'm stopped for awhile I shut it down.

Subaru2006

 

[stingray719]

Without a radiator (radiator delete mod) I run 170 to 174 on the roads with scratchers down. In the powder without scratchers (of course) 160 to 171.

 

[TestMaster]

Overheat light flashes @ 221 degrees and fuel is reduced to the engine so that it causes the engine to surge as a notification to the rider that the engine is in overheat protection mode.

At 230 degrees the light goes on solid as a warning that continued operation will cause damage to the engine even in reduced power mode.

Page 55 of the 2014 Viper service manual left column center!

 

[Switch07]

So what most of you are saying, I don't have to pull over and take a break if I hit 180 degrees? Lots of new things to learn when you switch brands.....


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[TestMaster]

If you need a break take one, but the Viper does not need it at 180. In the last year I really don't know or remember of anybody archiving above 195 + degrees. With the warning light coming on at 221, 200 degrees should be a good safe number. At 192-3 my sleds run great. 4 strokes are designed to be more efficient as temps rise so just go out, ride and enjoy!

The fan comes on at 190-193 degrees!

 

[Switch07]

Thanks for all the info guys. I haven't looked under the sleds yet, but is there any other heat exchangers other than the radiator. I was told there was nothing in the back end, but what about up front.

The reason I don't go out and look is because I'm sitting on a plane to Memphis and am thinking of all these questions, lol.


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[sxr70001]

There is a cooler in front of the track, nothing on the back and sides of tunnel.

 

[TestMaster]

There is a front cooler and you are correct no rear heat exchanger.