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02-27-2011, 03:27 PM
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Junior Member
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Member #12375
Join Date: Feb 2011
Location: Ohio
Posts: 12
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Thermostat Elimination.
Im thinking about eliminating the thermostat on my 525s. Ct racing recomends this and is suppose to let the outlaw run cooler. Just seeing if anyone else had done this mod, and the results of it.
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2008 Outlaw 525s
FMF 4.1 Slip On
Wiseco 12.5:1
Rath racing intake
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02-27-2011, 04:00 PM
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Polaris ATV Junkie!
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Member #8854
Join Date: Nov 2010
Location: GrangeVille,Idaho
Posts: 603
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It usually not a good idea to remove the thermostat, because your engine wont reach normal operating temperature, and that can cause a loss in power and poor gas mileage. At least thats what ive always been told.
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2011 Sportsman XP 550 EPS
Front And Rear Rack Extensions, Rear Lock And Ride Box With Back Rest, Heated Hand Grips, winch, Fender Extensions, Front And Rear Bumpers, HID Lights, A-Arm Guards, Low Lock And Ride Windshield, Maxxis BigHorn 2.0 Tires.
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02-27-2011, 04:04 PM
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Polaris ATV Legend
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Member #6579
Join Date: Aug 2010
Location: Central Connecticut
Posts: 3,114
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I don't see why a ATV engine would be any different than a automobile...
IMHO its NOT a good idea. The thermostat is there for a reason, it allows the engine to get to proper temp for best operation. With more and more computer controls on our engines this is more and more important. Lo temps can cause sludge to form in the crank case. Fuel economy will likely also suffer... Again, as long as they are the same as cars and trucks...
CW
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Mine
2007 Polaris Sportsman 700 EFI W/ 26" Maxxis Big Horns, Crusher Black alloy rims, EPI clutch kit, EPI HD springs F&R, Moose front/Ricochet rear CV guards, Kolpin Aux 4 Gal fuel can, UNI air filter, Moose camo tank bag, F&R rack extensions, Lock-N-Ride lo & hi windshields, Acerbis hand guards, CUSTOM mirrors and a 3000# Gorilla winch, W/Am-steel blue synthetic line, running thru a winch saver and an aluminum fairleed.
NEW: Thor's foot pegs and CUSTOM rear rack support frame and WES seat box. CUSTOM front and rear mud flaps.
Momma's
2000 Polaris Trail Boss 325 W/23" Wooly Bogger rear tires, Powermadd hand guards, UNI filter, Big Dawg rear and side bags, Polaris Mirrors, Kolpin grips, Quad Boss tank bag, Gas tank fuel gauge, Custom front 12v power port, Dual 1.5 Gal Kolpin fuel cans, mounted in custom rear facing mounts and a 2000# Super-Winch in a custom built mount W/winch saver.
CALL Thor @ www.TheATVSuperStore.com - 815-321-3888
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03-03-2011, 09:36 PM
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Junior Member
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Member #12304
Join Date: Feb 2011
Location: Snohomish Washington
Posts: 13
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The thermostat elimination kit works very well when riding slow in the woods...or in hotter climates...
I have ridden mine without a thermostat from 28 degrees...to 103 degrees...before the thermostat removal...the fan would come on all the time when doing slower riding.
I do notice that the motor takes longer to heat up when I am riding in really cool weather...but I just leave the choke on longer...and let it warm up longer...a practice that prolongs engine life.
Per the other answers...this quad has a carburator...no electronic fuel injection.
Allen at CT ...as well as other reputable engine builders...know what they are talking about .
My KTM 525 dual sport motorcycle doesn't have a thermostat...it comes without one stock ...and it has almost 45000 miles on it without there being any problems.
Chris
P.S. sludge comes from using lousy oil...and not changing it often enough...especially if you are using old dinosaurs for lubrication instead of synthetics.
Last edited by CB BLR; 03-03-2011 at 09:44 PM.
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03-04-2011, 11:10 AM
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Junior Member
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Member #12375
Join Date: Feb 2011
Location: Ohio
Posts: 12
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Thanks for the info. And i ride mostly woods, thats why i am considering it.
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2008 Outlaw 525s
FMF 4.1 Slip On
Wiseco 12.5:1
Rath racing intake
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03-04-2011, 11:21 AM
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Junior Member
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Member #12304
Join Date: Feb 2011
Location: Snohomish Washington
Posts: 13
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Glad I could help.
Chris
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03-10-2011, 01:37 AM
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Junior Member
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Member #12808
Join Date: Mar 2011
Posts: 3
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I don't agree with removing the thermostat. You have to think about how a cooling system operates to understand why. Thermostats main purpose is to keep engine temps constant. It warms engine quickly and helps keep system pressures constant. What most people do not think about is the other side of the spectrum. While one of its purposes is to warm engine quickly, the other is to keep coolant in the radiator longer letting the fan do its job before allowing it to recirculate back to motor which in effect leads to better cooling system efficiency. Fans are made to run at slow speeds in the woods, that's what they are for and work in unison together. Engines are designed to run at these temps. If your hot light is staying on and fan runs constant then I would have a look at radiator for being plugged. Deletion of any parts won't cure that.
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08-01-2011, 06:52 PM
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Junior Member
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Member #17317
Join Date: Aug 2011
Location: Indianapolis
Posts: 1
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The Cooling system on the outlaws is not like the system on an automobile.
Check out this link for more info. Outlaw Overheating Issues With Thermostat Mods
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08-04-2011, 06:05 PM
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ATV Enthusiast
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Member #12099
Join Date: Feb 2011
Posts: 40
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Good discussion, thanks
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08-19-2011, 09:48 PM
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ATV Enthusiast
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Member #5124
Join Date: May 2010
Location: las vegas,nevada
Posts: 77
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i went with ct's recomendation and here in the heat capital Las vegas,nv. it's does what they claim,thanxs ct.
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 in the world of outlaws,we band 2gather and run as the fastest of the fast.Laughing at the yamahoppers,and the rest of them slow rides outhere  pilot license required,i meant firearms,two gun minimum!!!!!!!!!!!!!!!!!!!!and maybe a few grenadiers  not here
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