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Oil temp, how hot is too hot.

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  #11  
Old 05-31-2011 | 09:32 PM
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Originally Posted by speakerfritz
while Harley says there oil is good for 300+ degrees...I do not believe the seals used in their motors can handle that level of heat.
How did you come to that conclusion??
 
  #12  
Old 05-31-2011 | 09:44 PM
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My '09 RK is still totally stock. I"m just now in the process of making some upgrades on to cool it down a bit even though I've had no problems with heat and never even had the heat management system kick in. Otherwise so far in 46,000 miles I've had no serious heat concerns with a stock '09.My bike runs 225*-230* routinely at this point. In moderate stop n go traffic it hits 250*-260* but I rarely get caught in bad traffic personally so don't recall going over that temperature. That's with no oil cooler. I just installed a PC-V with a map set for a STOCK '09 bike by Jaimie. Just as a precaution and because I have the $$$ to do it finally I'm making an upgrade to the PC-V from FuelMoto and have some V&H Power Duals on the way. I may or may not go with an oil cooler, but I think cooling it with fuel and more open exhaust (and getting rid of the CAT in it) will help it sufficiently. Oil cooler only if the other efforts don't get me where I think I want to go. How hot is too hot? I'd start to think of pulling over to let it cool down as it approached 300* just to be on the safe side.
 
  #13  
Old 05-31-2011 | 09:51 PM
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Originally Posted by speakerfritz
while Harley says there oil is good for 300+ degrees...I do not believe the seals used in their motors can handle that level of heat.
well if you think that,
If you ever check the head temp at operating level you will probably have a stroke.
 
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  #14  
Old 05-31-2011 | 09:51 PM
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Originally Posted by speakerfritz
while Harley says there oil is good for 300+ degrees...I do not believe the seals used in their motors can handle that level of heat.
Many years ago I blew an intake manifold gasket from crawling in Daytona Bike Week traffic on my '94 Evo. The base gasket went our not that much later, but that wasn't an uncommon problem back then so I don't know if it was related or not. I didn't have a temp gauge so I'm not sure how hot it was--but it got very hot.
 
  #15  
Old 05-31-2011 | 09:54 PM
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All seals are designed for 400F +
 
  #16  
Old 05-31-2011 | 09:57 PM
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Use a premium synthetic oil and don't worry about it.
 
  #17  
Old 05-31-2011 | 09:58 PM
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I don't have an oil temperature gauge on my Limited and I won't get one. Harley's been building air-cooled motors for quite some time now, and they're pretty good at it. So good in fact, that they sell the exact same bike with the exact same warranty in Alaska and Arizona.

Change your oil every 5,000 miles. Use synthetic if it makes you feel better. Buy an oil cooler if it helps you sleep at night. Spend hundreds or thousands of dollars to "fix" the "heat issue" that the bike has. All that money is to make you more comfortable, the bike doesn't need it. Harley offers a 2-year, unlimited mileage warranty. If they're willing to do that on a bike that doesn't have an oil cooler and is sold in Phoenix, that's good enough for me.
 
  #18  
Old 05-31-2011 | 10:03 PM
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Originally Posted by Arizona
My '09 RK is still totally stock. I"m just now in the process of making some upgrades on to cool it down a bit even though I've had no problems with heat and never even had the heat management system kick in. Otherwise so far in 46,000 miles I've had no serious heat concerns with a stock '09.My bike runs 225*-230* routinely at this point. In moderate stop n go traffic it hits 250*-260* but I rarely get caught in bad traffic personally so don't recall going over that temperature. That's with no oil cooler. I just installed a PC-V with a map set for a STOCK '09 bike by Jaimie. Just as a precaution and because I have the $$$ to do it finally I'm making an upgrade to the PC-V from FuelMoto and have some V&H Power Duals on the way. I may or may not go with an oil cooler, but I think cooling it with fuel and more open exhaust (and getting rid of the CAT in it) will help it sufficiently. Oil cooler only if the other efforts don't get me where I think I want to go. How hot is too hot? I'd start to think of pulling over to let it cool down as it approached 300* just to be on the safe side.
My experience has been the same but I was concerned when my HMS did not kick in when temps got in the 240-260 range on very hot bumper to bumper traffic stops. It turned out my bike's HMS wasn't activated. Now my system always stops one cylinder from firing when I'm in the 240-250 plus temp range at a stand still. Unless you are positive your HMS is turned on you might want to refer to your manual and go through the activation steps again. If it's not stopping a cylinder(rear one?) at 260 degrees I'd be concerned....plus I think my leg would be starting to melt. The HMS really works for me and lowers a hot engine to tolerable temps when stopped in traffic.

VR
 
  #19  
Old 05-31-2011 | 10:33 PM
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get rid of th P.O.S temp gauge, when you feel the bike burning your legs, pull over.
 
  #20  
Old 05-31-2011 | 10:41 PM
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Originally Posted by HOGNOT
My experience has been the same but I was concerned when my HMS did not kick in when temps got in the 240-260 range on very hot bumper to bumper traffic stops. It turned out my bike's HMS wasn't activated. Now my system always stops one cylinder from firing when I'm in the 240-250 plus temp range at a stand still. Unless you are positive your HMS is turned on you might want to refer to your manual and go through the activation steps again. If it's not stopping a cylinder(rear one?) at 260 degrees I'd be concerned....plus I think my leg would be starting to melt. The HMS really works for me and lowers a hot engine to tolerable temps when stopped in traffic.

VR
Not sure if i have HMS. Anyone know if that was available on 2006 models?
 


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