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I recently purchased a 300ex and noticed its only air cooled and the things HOT. There are no performance upgrades to it other than a UNA filter. I see people are cutting into the oil line. But i cant seem to find this oil line. Im not sure if its overheating or not but i do ride it pretty hard. Any help would be great. Also i cant get the starter button to work. all ive been doing is jumping the solonoid to get it to fire. Its working but want to fix it.
 

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I have an oil cooler on my 250x and it still runs HOT.

Cut the line on the right crankcase cover that runs to the head. Its a steel tube, hook some rubber hose up to it and get a heat exchanger and mount it to the frame.

I use mobil 1 v-twin oil. Harley guys with temp sticks say it decreases engine temps about 10 degrees.
 

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If it sticks... TOO HOT
 

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i dont like oil coolers and my friend blow his up when he ran one so i run my hard and faster you go the beeter it runs
 

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the oil cooler didn't blow it up, it was either installed wrong or he didn't put more oil in to compensate for the larger capacity.
 

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it was instaled wrong but i pussh my bike hard and it say cool cuz it gets more air
 

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The air cooled engine is more reliable. Look at the 400EX. that engine has been the same since the XR400 came out.
 

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yah and radiaters too i trust till your hose bust
 
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