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overheating
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Posted by: iamabowler

How do you tell if your motor is overheating ? I'm fixin to be getting a 400 and have not had an air cool before. If your motor does over heat how do you get it to run cooler seeing how theres no radiator?
thanks alot

Posted by: quadrider400

You can get a temp gauge that goes into the oil res....and you can get fins that will force more air in and around the motor... my other thought is to add a larger oil cooler ... just never got around to it...

Posted by: guinness77

Air scoops do WONDERS for helping cool a 400ex. They're not cheap for what you get. They run around $80.00. If you're mechanically inclined you can buy a sheet of metal and make your own. I did. It takes about 2 hrs with a dremel and a rivet gun.

Posted by: DieselBoy

ohhh youll know when shes runnin hot:P

Posted by: stalefish_132

if you're worried about running hot air scoops do make a differance on EX's. paying $80 fo0r a set is realy alot for some scoops

Posted by: 2004exrider

It is really hard to over heat a 400ex. Unless your riding around in first gear at full throttle all of the time then you shouldnt have to wory

. Just as long as your moving pretty good and getting air passed the engine you shouldn't have a problem.

Jimmy

Posted by: 79400ex

I have got my 400 ex hot several times. THe only thing I have notice that it looses a little power. Just keep your oil cooler clean and you shouldn't have any problems.

Posted by: Sleeper

If it's hot and you stop and try to take off slow it might make a clicking noise and be a bit jerky. Air scoops help and like 2004exrider said you have to be on a short track pinned in 1st o 2nd for a while to get it to that point.

Sleeper

Posted by: Plante400

lol not a 440 i was ripping on mine in a pit last weekend i cant believe it didnt blow up it was so damn hot

edit: will scoops help cool my 440 or is it not worth it and just going with the better oil cooler

Posted by: PowerJunkie

what about racing mx?

Posted by: DieselBoy

It's pretty insane how hot the motor gets, especially when you shut it off when its hot. I wouldn't doubt the air scoops would help alot, but if you ride slow it wouldn't really do much...

Posted by: 1fst400

It will loose power seem slugish when over heating. Mine did it all the time. I would just take off doun a straght strech.

Posted by: krt400ex

quote:
Originally posted by DieselBoy
It's pretty insane how hot the motor gets, especially when you shut it off when its hot. I wouldn't doubt the air scoops would help alot, but if you ride slow it wouldn't really do much...

I don't knoe. I yhink yhats the point of them. They help get extra air to your engine to keep it cool. whether you're riding fast or slow. I ride on the faster side and I've only had problems overheating on tight twisty trails. Not often and not that bad, but you can tell.

Posted by: DieselBoy

quote:
Originally posted by krt400ex
I don't knoe. I yhink yhats the point of them. They help get extra air to your engine to keep it cool. whether you're riding fast or slow. I ride on the faster side and I've only had problems overheating on tight twisty trails. Not often and not that bad, but you can tell.

that's what i mean... if you ride in tight twisty trails and stuff the air scoops arent' going to perform 100% as opposed to moving moderate-fast where its scooping the wind.

Posted by: boricua

makes sense to me. sounds like a better/bigger oil cooler is more effective at slower speeds than scoops.....

Posted by: krt400ex

quote:
Originally posted by DieselBoy
that's what i mean... if you ride in tight twisty trails and stuff the air scoops arent' going to perform 100% as opposed to moving moderate-fast where its scooping the wind.

Ya got a point.