Post by socal1200r on Jan 18, 2010 13:31:18 GMT -5
I did a writeup in here about replacing the stock paper air filter with a Uni dual stage foam filter. The last thing I did on that project was drill a 2" hole in the bottom of the stock airbox. This is the completion of that part. I connected a hose from the hole I drilled in the bottom of the airbox to that plastic trim piece that’s right under the front bumper.
Here’s the starting point, the 2” hole I drilled in the bottom of the stock airbox:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHose1s.jpg
The parts that I used, 2” X 36” pre-heater hose, and the 2” hole saw:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHoseParts1s.jpg
I cut the hole in the lower bumper piece where there was more “meat” to support the hose:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHose2s.jpg
I stretched the hose to its full length, then fed the hose thru the lower bumper piece up into the airbox, then cut the end off, leaving about ½” of hose at either end:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHose3s.jpg
This is what it looked like when I was done, as viewed from the front:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHose4s.jpg
I didn’t like how this looked, it looked too “ghetto”, so I went to Lowe’s and got this black plastic drain part, it’s a 1.5” angled thing of some kind:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHoseParts2s.jpg
The new and improved look from the front. I put a hose clamp on the back side of this black plastic drain piece, and put some black RTV around the opening:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHose5s.jpg
Cost for parts as follows: 2” hole saw ($0, I already had this), 2” x 36” pre-heater hose ($7 at Advance Auto), black plastic drain piece ($2 at Lowe’s). I’ve done this to other vehicles I’ve owned, and never had any issues with crap getting into the airbox. The way I look at it, for water or debris to enter the hose, travel up into the airbox, get past the two foam filter elements and into the intake system, would be the 8th wonder of the world, lol! If someone’s paranoid that will happen, they can put some type of screen at the bumper inlet and airbox outlet, to give them piece of mind. A 1 7/8" hole saw might have made the hose and that black plastic drain piece fit a little more snug, but I think it’s good to go as is.
As you can see, there’s nothing blocking the inlet under the bumper, and it’s a fairly straight shot up into the airbox from there. So this setup should get a good amount of air being forced up into the airbox, at least when the vehicle is moving. Should get a LOT more air into the airbox than from behind the headlight!
Sorry for the links, but the pics wouldn't post again...
Here’s the starting point, the 2” hole I drilled in the bottom of the stock airbox:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHose1s.jpg
The parts that I used, 2” X 36” pre-heater hose, and the 2” hole saw:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHoseParts1s.jpg
I cut the hole in the lower bumper piece where there was more “meat” to support the hose:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHose2s.jpg
I stretched the hose to its full length, then fed the hose thru the lower bumper piece up into the airbox, then cut the end off, leaving about ½” of hose at either end:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHose3s.jpg
This is what it looked like when I was done, as viewed from the front:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHose4s.jpg
I didn’t like how this looked, it looked too “ghetto”, so I went to Lowe’s and got this black plastic drain part, it’s a 1.5” angled thing of some kind:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHoseParts2s.jpg
The new and improved look from the front. I put a hose clamp on the back side of this black plastic drain piece, and put some black RTV around the opening:
i803.photobucket.com/albums/yy319/socal1200r/1988%20Jeep%20Comanche/Uni%20filter%20install%206300%20AST/InletHose5s.jpg
Cost for parts as follows: 2” hole saw ($0, I already had this), 2” x 36” pre-heater hose ($7 at Advance Auto), black plastic drain piece ($2 at Lowe’s). I’ve done this to other vehicles I’ve owned, and never had any issues with crap getting into the airbox. The way I look at it, for water or debris to enter the hose, travel up into the airbox, get past the two foam filter elements and into the intake system, would be the 8th wonder of the world, lol! If someone’s paranoid that will happen, they can put some type of screen at the bumper inlet and airbox outlet, to give them piece of mind. A 1 7/8" hole saw might have made the hose and that black plastic drain piece fit a little more snug, but I think it’s good to go as is.
As you can see, there’s nothing blocking the inlet under the bumper, and it’s a fairly straight shot up into the airbox from there. So this setup should get a good amount of air being forced up into the airbox, at least when the vehicle is moving. Should get a LOT more air into the airbox than from behind the headlight!
Sorry for the links, but the pics wouldn't post again...