Has anybody out there thought or heard or installing cooling fans on the FJ?
Its been on my mind but I don't know if it would be worth it
Cheers
Kev
Quote from: Rampant_ant on February 01, 2012, 02:44:46 AM
Has anybody out there thought or heard or installing cooling fans on the FJ?
Its been on my mind but I don't know if it would be worth it
Cheers
Kev
I believe it has been thought about and dismissed, a fan big enough to be effective would be too big to mount. It's spoken about from time to time but I've never seen it done. It's a great idea until you apply some serious though to it.
Noel
A bigger oil cooler would be a better alternative IMO. I've seen some threads here on the subject.
A fan for the oil cooler itself would be a good idea if you have to deal with a lot of traffic and if you have increased compression. Setrab makes fan packs.
Quote from: JMR on February 01, 2012, 08:32:47 AM
A fan for the oil cooler itself would be a good idea if you have to deal with a lot of traffic and if you have increased compression. Setrab makes fan packs.
See thats what I was thinkin. Bigger cooler and maybe a fan but I don't know.
Its a regular occurance on my commute that people decide to drive into each other because they suddenly forget how to drive
Kev
The cooler is really only effective when air is flowing through it. Stop and go traffic gets the engine hot...real hot with extra compression. Even with a large cooler.
An oil cooler fan on the FJ in Aussie heat would be pointless, especially in traffic where the ground temp can be up as high as the air temp (35-40 deg C) plus all the exhaust and engine heat - it would simply be blowing hot air on hot oil and not much heat transference would occur if you were standing still) just a drain on the battery
Quote from: Tengu on February 01, 2012, 09:14:01 PM
An oil cooler fan on the FJ in Aussie heat would be pointless, especially in traffic where the ground temp can be up as high as the air temp (35-40 deg C) plus all the exhaust and engine heat - it would simply be blowing hot air on hot oil and not much heat transference would occur if you were standing still) just a drain on the battery
Thats somewhat valid but moving air at 35° is stilll better than the stationary air in the cooling fins at engine temp.
It's not as effective as cold air but any difference in temperature has a cooling effect.
Kev
Quote from: Tengu on February 01, 2012, 09:14:01 PM
An oil cooler fan on the FJ in Aussie heat would be pointless, especially in traffic where the ground temp can be up as high as the air temp (35-40 deg C) plus all the exhaust and engine heat - it would simply be blowing hot air on hot oil and not much heat transference would occur if you were standing still) just a drain on the battery
The principle is effective on liquid cooled bikes with a radiator and fan and they operate under the same conditions (in regards to exhaust and engine heat). Obviously liquid cooling is more efficient but the same principle is involved. The fact that the oil is hotter than the surrounding air (and it better be or you wouldn't live to talk about) it will lose BTU's to the fan driven moving air. When it is that hot and you know you will encounter stop and go traffic use a liquid cooled bike if it is possible.
Quote from: Rampant_ant on February 01, 2012, 09:25:37 PM
Thats somewhat valid but moving air at 35° is stilll better than the stationary air in the cooling fins at engine temp.
It's not as effective as cold air but any difference in temperature has a cooling effect.
Kev
Sure I understand that, but where would you put the fan? and how big would it need to be to make a worthwhile or even a noticeable difference?
and JMR: do you have a spare liquid cooled bike on hand?
I wish I had the $ for another more fun commuter, the time to ride both bikes more often, and somewhere to store said bikes! :lol:
....... (http://htt://fjowners.com/gallery/2/178_25_05_11_8_01_15.jpeg)
(http://htt://fjowners.com/gallery/2/178_25_05_11_7_59_36.jpeg)
Quote from: Tengu on February 02, 2012, 11:07:10 PM
Quote from: Rampant_ant on February 01, 2012, 09:25:37 PM
Thats somewhat valid but moving air at 35° is stilll better than the stationary air in the cooling fins at engine temp.
It's not as effective as cold air but any difference in temperature has a cooling effect.
Kev
Sure I understand that, but where would you put the fan? and how big would it need to be to make a worthwhile or even a noticeable difference?
and JMR: do you have a spare liquid cooled bike on hand?
I wish I had the $ for another more fun commuter, the time to ride both bikes more often, and somewhere to store said bikes! :lol:
Check out the fan packs Setrab makes....they are pull units that are about 5" thick. I'm sure they can be made to fit. I haven't done any testing so I cannot say what temp drop etc would occur but a well designed fan can pull pretty good CFM.
I use my busa a majority of the time now. My FJ enjoys a well deserved pampered life now. :biggrin:
....... misc FJ Photos, page 6 row 2
Jeff
Quote from: Brook on February 03, 2012, 10:20:17 AM
....... misc FJ Photos, page 6 row 2
Jeff
You have a link for that Jeff?
....... sorry for the delay, No Sir, no link.
but, what Tengu said, is 100% correct. [with the fan in that location, anyway] all it is doing is blowing a lot of hot air on top of the motor ........ at red lights with the fan turned on, the oil temp.gauge, shows it.
That's why I removed it and installed two small computer fans in front of the... Earl's 10row oil cooler.
I put the fans in front on the cooler, just for that reason. I did not want the same results [the fans blowing hot air]. > all trial and error<
Jeff
...... Went to Daytona Beach [bike week] last night. > a good test<
Once I got there, I stopped at a Hess gas station, close to the speedway.[ for about and hour]
Got a little gas and had a good look at all the different kinds of bikes [No FJ's].
Then heading out to the main strip [where everyone goes] in heavy traffic.
The oil temp. gauge was showing 210-213, but climbing.
At that point, I turned on the two small fans on the oil cooler. But, it was to late, The oil temp. got to 245. and I could feel the heat coming off of the motor.
So, being on the main strip, I pulled over in a 7-11 store parking lot. [also for about and hour] watching all the bikes and girls in bikini's go by [9pm].
then I got back in the stop and go traffic. but now, turning the fans on...... The oil temp. got to 160-170 and stayed there, for about 20-30 minutes, stop and go.
So now I know, to turn the fans on before the oil temp. gets past 170 [in traffic]. after 170 the small fans will not make a difference.
note, if anyone, is thinking of installing any kind of small computer fan or fans, you need to install some sore of a warning light to show that they are on or off.... they are to quiet. [that's if it is not wired to the key switch].
I did not know that the fan switch was on, for a couple of days and killed a two month old battery.
Jeff