11-25-2018, 03:13 PM | #151 | |
Join Date: Nov 2018
Location: Gastonia, NC
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11-26-2018, 07:48 AM | #152 |
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Location: Houma, La.
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Glad you got it figured out.
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2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
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12-26-2018, 09:04 PM | #153 | |
Join Date: Oct 2018
Posts: 6
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mvaldo |
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12-26-2018, 11:51 PM | #154 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,109
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Quote:
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12-27-2018, 02:47 AM | #156 |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,266
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needs to be a full flow system...
but better than nothing.. .
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12-27-2018, 05:26 AM | #157 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,109
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It's simple and effective for most peoples needs. It cools the oil right before going to the hottest part of the engine, making it a decently effective method for cooling said engine and as a whole would contribute to lower overall operating temps.
As Pete said, it still is not as good as a total flow system that cools the oil off of the oil pump. This ensures that all parts of the engine receive oil that has been cooled. I was originally going to run a dual cooler setup based on the pump system, but decided to actually change paths and run both. I do like the idea of cooling the oil once more right before it goes to the valves and cylinder head on my engine with its higher compression ratio. My one real critique of either system is that the intended cooler placement on the down tube of the frame makes it interfere with the front fender. Many of us make our own cooler mount using a length of flat bar or L shaped steel or aluminum. so the coolers can be placed in the direct airflow to the side, and hidden by the tank plastics.
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12-27-2018, 06:17 AM | #158 |
Join Date: Jun 2016
Location: Hell
Posts: 2,408
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I enquirers today about a clutch cover that has the oil cooler outlets like some of the OHC engines but..... can’t even custom make some
Kinda feel that is the better way and use a cooler and line setup that’s more common. |
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12-27-2018, 10:12 AM | #159 |
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Location: Houma, La.
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The oil coolers definitely work. I have a hard time getting temperatures above 140f right now with the temperatures in the 60's. Highest I seen were in the 170's on 90+ degree day and running it hard.
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2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel Last edited by JerryHawk250; 12-27-2018 at 01:47 PM. |
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12-27-2018, 10:04 PM | #160 | |
Join Date: Oct 2018
Posts: 6
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mvaldo |
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12-28-2018, 12:01 PM | #161 |
Join Date: May 2017
Location: Michigan
Posts: 107
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for the tt250 basically the same thing as the hawk i was reading 210 degrees Fahrenheit i just ordered my oil cooler and am hopeing to get readings of 170-180 these bikes definitly run hot and should be liquid cooled but they arnt so the best way to keep them cool is doing an oil cooler add
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12-29-2018, 07:47 AM | #162 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,109
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Quote:
Even liquid cooled engines are still too hot to really touch after running. Oil is a lot less efficient at thermal transfer than water/coolant. The oil coolers main function is to help keep the oil at a stable operational temperature. As a side benefit, it also helps to keep the engine temps lower and a little more stable. If you really want to go all-in to keep that oil at as stable of a temp. as possible, then you could always install a remote oil cooler thermostat. These are designed to bypass most of the oil flow back to the engine until it reaches 180-200 degrees (depending on manufacturer etc.). If you plan to ride in colder temps, then this is actually a good idea. I plan on installing one on my setup in the future when I install my second cooler. The real balancing act is to keep the oil at a low enough temperature to not experience thermal breakdown - usually around 250 to 300 degrees, but also hot enough that condensation and water vapor from combustion will evaporate to help prevent the water from mixing with the oil and combustion byproducts from blow by (creating acids). This means that the sump oil temperature needs to reach at least 212 degrees. In Jerry's case, it is quite possible that on cooler days his dual setup may actually be working too well, but the only way to know for sure would be for him to notice condensation mixed with his oil, which as of this point I don't believe he has. If that was the case, then that is where the previously mentioned thermostat would come into play. Given how small the oil capacity is on these motors, and how hard they have to work, it is unlikely. They don't have the benefit of a water jacket taking away the majority of the heat from the cylinder, so the oil that gets splashed on to the cylinder walls and piston is going to see a lot more heat than a water cooled engine would under the same load.
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12-29-2018, 06:30 PM | #163 | |
Join Date: Oct 2018
Posts: 6
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Before installing the oil cooler, after 30 min. or riding I could not touch the valve cover and could not hold my hand for more than 3 seconds on the crank-case covers. Now with the oil cooler, after 30 min of riding I can just hold my hand on the crank-case covers, and for less than 3 seconds on the valve cover, therefore I am happy with the oil cooler. The last time I owned a motorbike was 25 year ago, therefore I can not remember how hot the engine would get. What surprised me was the heat of the crank-case covers (I can feel the heat in my feet). I thought that it was a problem of my motorbike, since I bought it used and the previous owner put 2.5 liters of oil in it, but from what your are telling me it looks like this is normal for these engines. mvaldo |
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01-02-2019, 12:36 PM | #164 |
Join Date: May 2017
Location: Michigan
Posts: 107
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ordered my oil cooler a few days ago ill try and give you guys ir readings of the whole bike before and after the install
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04 flywing 150 05 flywing 150 07 gasgas ec200 18 csc tt250 / foam filter mod, amazon exhaust, mikunki carb, 47tooth sprocket, o ring chain, stereo system, amsoil oil, honda 10w fork oil, tusk bars and brush guards.... more to come |
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01-03-2019, 12:05 AM | #165 |
Join Date: Nov 2018
Location: Stockport, Oh.
Posts: 1,442
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Well.. I wouldn't fault anybody for putting an oil cooler on, it's probably a good idea. That being said, these little motors were designed to handle that heat. From the research I've found Honda designed the CG engine without an overhead cam because the people using them didn't change the oil and might even be using vegetable oil or worse for lubrication. I started out on air cooled XRs and ATCs and we would putt putt these things around in the woods for hours with almost no air passing over the motor. Even today I have a 94 FourTrax 200D that still runs the original factory spark plug and centrifugal clutch. Just change the oil, often.
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