Bender
NAXJA Forum User
- Location
- Cambridge, Ontario
Yesterday afternoon I had $30 burning a hole in my pocket so I did what any jeeper would do.... go to my local pic and pull to search for goodies!
The search today was for some sort of fan to replace my stock mechanical fan. As many of you know the stock fan is run by the belt through a viscous clutch. As this clutch wears out the fan will not give adequate flow to cool the engine... and even if it is working it barely cools the hot 4.0L. Jeep acknolwedged this and added an aux fan to models equipped with A/C. Luckily I had put on of these aux fans in but it would cycle on and off when the jeep was parked indicating to me the stock mech fan was not up to the task. Also, whenever I did a water crossing the stock mech fan would spray muddy water all over the engine bay while trying to pull the engine into the rad... not very nice. Water would also kill the viscous clutch and those things become expensive if you have to keep replacing them.
So... I had to find some sort of fan in the 10" to 12" size that is less than 3" thick so it would fit in the engine bay betwen the rad and the engine.
Here's what I found.
http://community.webshots.com/photo/86564946/86565946iEwkVy
On the left is a dual 12" puller fan and both have TWO speeds!! I found this in a Nissan. On the right is a very compact 10" pusher fan that came from a Mazda. Each were $15.
Take a look through the pics for the install.
http://community.webshots.com/album/86564946DsertP
I managed to fit the dual 12" fans in the stock fan location and I also somehow squeezed the 10" pusher fan between the rad and front grill. All the clearances look good.
Testing.... since I just did this yesterday the testing is somewhat inconclusive as of right now. The little I have done looks promising. With my truck parked I let it idle and warm up... I then put the dual fans on their "low" setting and tried to make the engine overheat by revving it up to 2000 rpm for a while. As soon as I turned the fans on the temp went right down to 185 degrees and sat there. So, as of right now it would appear that the low setting is sufficient to cool the engine... that gives me the high setting AND the 10" pusher fan for backup cooling for those really hot and humid days.
The best part is.... I can now turn them off going through water so I don't have to worry about splashing all over my engine electronics!!
Cheers!
The search today was for some sort of fan to replace my stock mechanical fan. As many of you know the stock fan is run by the belt through a viscous clutch. As this clutch wears out the fan will not give adequate flow to cool the engine... and even if it is working it barely cools the hot 4.0L. Jeep acknolwedged this and added an aux fan to models equipped with A/C. Luckily I had put on of these aux fans in but it would cycle on and off when the jeep was parked indicating to me the stock mech fan was not up to the task. Also, whenever I did a water crossing the stock mech fan would spray muddy water all over the engine bay while trying to pull the engine into the rad... not very nice. Water would also kill the viscous clutch and those things become expensive if you have to keep replacing them.
So... I had to find some sort of fan in the 10" to 12" size that is less than 3" thick so it would fit in the engine bay betwen the rad and the engine.
Here's what I found.
http://community.webshots.com/photo/86564946/86565946iEwkVy
On the left is a dual 12" puller fan and both have TWO speeds!! I found this in a Nissan. On the right is a very compact 10" pusher fan that came from a Mazda. Each were $15.
Take a look through the pics for the install.
http://community.webshots.com/album/86564946DsertP
I managed to fit the dual 12" fans in the stock fan location and I also somehow squeezed the 10" pusher fan between the rad and front grill. All the clearances look good.
Testing.... since I just did this yesterday the testing is somewhat inconclusive as of right now. The little I have done looks promising. With my truck parked I let it idle and warm up... I then put the dual fans on their "low" setting and tried to make the engine overheat by revving it up to 2000 rpm for a while. As soon as I turned the fans on the temp went right down to 185 degrees and sat there. So, as of right now it would appear that the low setting is sufficient to cool the engine... that gives me the high setting AND the 10" pusher fan for backup cooling for those really hot and humid days.
The best part is.... I can now turn them off going through water so I don't have to worry about splashing all over my engine electronics!!
Cheers!
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