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Post by geh3333 on May 19, 2015 2:45:00 GMT -5
I hear of others having oil temps of 240+ even up to 300 degrees. My temps never really went over 212 degrees " and that's running hard " I was told that even 240 + was normal . my temps recently have been between 212 - 270 or so , maybe higher. I found that my oil pump is not working !. After about 20 mins of idling , my scoot had an oil temp of around 167 degrees. That is much higher then previous. My scoot usually idled around 130 degrees. I suggest all with high oil temps check their pump. Take the valve cover off and turn the engine over . you should see oil pumped into the rocker arms and cam bearings. If not then your pump is probably shot. I'm lucky I checked mine . any longer and my cam bearings would not of lasted.
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Post by hillbillybob on May 19, 2015 4:23:11 GMT -5
geh3333, If your oil temps never went over 212* while running hard, then your temp gauge is not very accurate. Maybe a corroded connection, or bad ground. I have 4 vehicles with oil temp gauges (counting my scooter).....all will climb to over 220* in warm weather when worked.....and other than the scoot, they are liquid/water cooled engines. Both my Camaro, and my Forester, run in excess of 200* just cruising along at 60, on level ground. Now the scoot being air cooled, and only holding 24 ounces of oil, (as opposed to 5 or 6 quarts) is naturally going to run a bit warmer....and that's ok. Todays oils are made to handle higher temps than what they did years ago. Thanks to the EPA, engines run hotter today...my Chevy pickup came with a 210* thermostat, and that is what the water temp runs, winter, summer.....always 210*. Oil temps always exceed water temps on a hot day, or when engine is worked (higher throttle settings)
Wikipedi says this.....
In petrol (gasoline) engines, the top piston ring can expose the motor oil to temperatures of 160 °C (320 °F). In diesel engines the top ring can expose the oil to temperatures over 315 °C (600 °F). Motor oils with higher viscosity indices thin less at these higher temperatures.
Boy, that statement might make some people rethink what type of oil they want to use in their scoots, and lastly, if oil temps were supposed to max at 170* to 200* range, oil temp gauges would not read to 300*
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Post by ramblinman on May 19, 2015 4:36:51 GMT -5
regardless if his gauge is accurate i think he makes a good point to check your oil flow if you notice a jump in temperature.
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Post by geh3333 on May 19, 2015 4:45:58 GMT -5
geh3333, If your oil temps never went over 212* while running hard, then your temp gauge is not very accurate. Maybe a corroded connection, or bad ground. I have 4 vehicles with oil temp gauges (counting my scooter).....all will climb to over 220* in warm weather when worked.....and other than the scoot, they are liquid/water cooled engines. Both my Camaro, and my Forester, run in excess of 200* just cruising along at 60, on level ground. Now the scoot being air cooled, and only holding 24 ounces of oil, (as opposed to 5 or 6 quarts) is naturally going to run a bit warmer....and that's ok. Todays oils are made to handle higher temps than what they did years ago. Thanks to the EPA, engines run hotter today...my Chevy pickup came with a 210* thermostat, and that is what the water temp runs, winter, summer.....always 210*. Oil temps always exceed water temps on a hot day, or when engine is worked (higher throttle settings) Wikipedi says this..... In petrol (gasoline) engines, the top piston ring can expose the motor oil to temperatures of 160 °C (320 °F). In diesel engines the top ring can expose the oil to temperatures over 315 °C (600 °F). Motor oils with higher viscosity indices thin less at these higher temperatures. Boy, that statement might make some people rethink what type of oil they want to use in their scoots, and lastly, if oil temps were supposed to max at 170* to 200* range, oil temp gauges would not read to 300* I checked it I boiling water and it read 100 degrees Celsius. I also took my temp with it and it read right. I'll take a video of the temps when I get the oil pump on. Think about it. My temps are around 230-270 or so and that's with a non working oil pump. |
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Post by geh3333 on May 19, 2015 4:47:24 GMT -5
I'll have to prove this one as well it seems , lol. No problem . my air scoop works great.
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Post by JerryScript on May 19, 2015 10:18:28 GMT -5
Is there some confusion over Celsius vs Fahrenheit here?
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Post by geh3333 on May 19, 2015 10:33:43 GMT -5
Is there some confusion over Celsius vs Fahrenheit here? My temp gauge goes up to 100 degrees Celsius, which is 212 Fahrenheit. It has room after that but its not marked , so I have to guess what the temps are. In the summer , when riding the scoot pretty hard , my temps will get up to about 212 degrees Fahrenheit , and idle around 130 degree Fahrenheit. Hat may seem like the temps are sorta low , but then again , my engine has nearly 20k miles and still running strong. Heat is the engines worse nightmare. This could help explain why my engine is lasting as long as it has. If my temp gauge was off , that means the temps were much higher then I thought and I probably would have fried my engine , but that did not happen. I actually check the temp gauge a couple times with boiling water and taking my own temperature. Is 212 degrees really that low ? I mean is everyone running higher temps ? How many of us actually have temp gauges? I'd like to hear some temp readings from others . if we can get some members to post their oil temps , then we can see what the norm is . The scary thing is that many do not have a temp gauge , and will not know their engine is overheating possibly before it's too late !! Actually these oil temp gauges only go up to 212 degrees Fahrenheit ! Why is that ? I'd say its because the regular oil temps should stay in that range . |
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Post by JerryScript on May 19, 2015 11:33:49 GMT -5
A quick Google shopping search for motorcycle oil temperature gauge shows dials indication 240-340 at the top end. I wouldn't make assumptions based on a single gauge's markings.
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Post by dmartin95 on May 19, 2015 11:37:54 GMT -5
Actually these oil temp gauges only go up to 212 degrees Fahrenheit ! Why is that ? I'd say its because the regular oil temps should stay in that range . Because it's a low quality toy and not a mechanics instrument... I've noticed you've been beating the oil drum lately.... Oil coolers and now this.... So I think you need to armed with a little more information.... Source |
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Post by geh3333 on May 19, 2015 15:56:19 GMT -5
Actually these oil temp gauges only go up to 212 degrees Fahrenheit ! Why is that ? I'd say its because the regular oil temps should stay in that range . Because it's a low quality toy and not a mechanics instrument... I've noticed you've been beating the oil drum lately.... Oil coolers and now this.... So I think you need to armed with a little more information.... SourceI completely understand , but I swear my engine temps are normally that low. I also drilled a few holes on the left side of the engine shroud , near the top. I did this because the left side of the shroud is so close to the top end , its nearly touching in some places. This allows for more heat to escape , and helps the air flow around that side of the top end. I also had a small cooling fan attached to the shroud , over the holes I drilled , sucking out the hot air. At first the fan seemed to help but I later noticed that there was not much if any difference with the fan off or on. I'll take a video after I get my new pump delivered and installed. I know my temp gauge is accurate " that's not in question at all" so my oil temps without the pump working are still under 300 degrees , usually between 230 and 270, and that's running her hard. My pump was not working on the speed run video , and I had her smokin nearly the whole run and my temps were around 250. It was only 67 degrees out " I think " I'm not 100% sure of the outside temp that morning. I do know it was in the 60's |
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Post by rcq92130 on May 19, 2015 22:09:26 GMT -5
geh3333, If your oil temps never went over 212* while running hard, then your temp gauge is not very accurate. Maybe a corroded connection, or bad ground. I have 4 vehicles with oil temp gauges (counting my scooter).....all will climb to over 220* in warm weather when worked.....and other than the scoot, they are liquid/water cooled engines. Both my Camaro, and my Forester, run in excess of 200* just cruising along at 60, on level ground. Now the scoot being air cooled, and only holding 24 ounces of oil, (as opposed to 5 or 6 quarts) is naturally going to run a bit warmer....and that's ok. Todays oils are made to handle higher temps than what they did years ago. Thanks to the EPA, engines run hotter today...my Chevy pickup came with a 210* thermostat, and that is what the water temp runs, winter, summer.....always 210*. Oil temps always exceed water temps on a hot day, or when engine is worked (higher throttle settings) Wikipedi says this..... In petrol (gasoline) engines, the top piston ring can expose the motor oil to temperatures of 160 °C (320 °F). In diesel engines the top ring can expose the oil to temperatures over 315 °C (600 °F). Motor oils with higher viscosity indices thin less at these higher temperatures. Boy, that statement might make some people rethink what type of oil they want to use in their scoots, and lastly, if oil temps were supposed to max at 170* to 200* range, oil temp gauges would not read to 300* I checked it I boiling water and it read 100 degrees Celsius. I also took my temp with it and it read right. I'll take a video of the temps when I get the oil pump on. Think about it. My temps are around 230-270 or so and that's with a non working oil pump. Now everyone on this site is wondering just what temperature you think is "right" .......... |
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Post by lain on May 19, 2015 22:21:34 GMT -5
The engine shroud gives you less cooling than a standard heatsink on a CPU. It just loosely encloses the area for the fan to blow around, a better approach would be to add heatsinks to draw the heat away and have the shroud push the air out the bottom all around, maybe add a fan to the other side. Idk though, I don;t have any overheating so I haven't invested any real time into the idea.
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Post by geh3333 on May 19, 2015 22:23:07 GMT -5
As long as my temp gauge is working properly , I should have correct readings . I took the temp of boiling water and the gauge read 100 C , which is 212 F . so actually all of my temps should be correct. I even took my own body temp and it read the correct degree. So I'd say all the temps are correct. I obviously did not do any damage to the engine when the oil pump was not working "she still runs great !" So the engine temps did not get too high to cause any issues. The hottest it got was about 300 degrees . I'd really like to get some real oil temp readings from others also :
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Post by JerryScript on May 19, 2015 23:37:19 GMT -5
The engine shroud gives you less cooling than a standard heatsink on a CPU. It just loosely encloses the area for the fan to blow around, a better approach would be to add heatsinks to draw the heat away and have the shroud push the air out the bottom all around, maybe add a fan to the other side. Idk though, I don;t have any overheating so I haven't invested any real time into the idea. The cylinder jug itself is a heat sink with its cooling fins. The shroud is designed to force air through those fins. Without it, turbulence would make the air flow around them instead of through them. |
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Post by geh3333 on May 20, 2015 2:59:54 GMT -5
I checked it I boiling water and it read 100 degrees Celsius. I also took my temp with it and it read right. I'll take a video of the temps when I get the oil pump on. Think about it. My temps are around 230-270 or so and that's with a non working oil pump. Now everyone on this site is wondering just what temperature you think is "right" .......... Ahh! , I stuck the gauge thermometer under my tongue and took my own temperature " 98.6" . the gauge read pretty much right at 37 Degrees Celsius. |
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