Heat

[tdsongster]

My 400EX is running between 250 and just under 300 degrees. Is this to hot? What temp are they supposed to run?

[plkmonster2]

IS that oil temp or engine. If it is engine, you should be fine. A higher ambient temp raises engine temp a lot. You may also try higher octane fuel. Also, what is your jetting and mods?

[tdsongster]

This is my oil temp, I have one of those temp/dip stick gauges. My mods are listed in my signature. I dont know what the jetting is, I had C&D buiild the motor.

[murrays400ex]

way to ****in hot dude ur oil cools your engine but it does not obsrb that much heat maybe find a aftermarket cooler or mini radiator i was told a transmision cooler off a car werks good

[plkmonster2]

You need to be running premium minimum. You can try to mix a little race gas too, that should drop the temps slightly. You also may want to get the FST secondary cooler, or the kit from perma.

[plkmonster2]

Did they jet the carb for you? I think you may be lean, especially if you are unsure about the jetting.

[2004exrider]

the 400 is supposed to run inbetween 250-275 degrees. oil will start breaking down at 300 degrees and higher.

Jimmy

[tdsongster]

Yeah, I talked with Colby and that is what he said, 250-275 is normal. I just wondered cause I saw an article that said anything over 200 was bad.

[2004exrider]

air cooled engines run really hot anyways, so i wouldnt worry to much about it.;)

Jimmy

[tdsongster]

Why is murrays400ex saying that 250 to 275 is what to ****in hot?