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Complete Instructions for Eliminating Oil Filter Adaptor on Jeep XJ Cherokee
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Senior Member
Joined: Oct 2009
Posts: 532
Likes: 1
From: Southern Utah
Year: 1992
Model: Cherokee
Engine: 4.0 I6
Hey man, sorry, that sucks. Yea I guess a prerequisite to this is replacing your motor mounts. 
Here's some photos

Stupid pin

Bosch 3330.
Did my first oil change today and I still didn't cut off enough nipple, so I had to lift the engine up to get my filter out, but you could just cut more off.
By the way, my buddy brought to my attention that flow rates are different for different filters, so just keep that in mind when doing this. I'm not going to look for the differences in the original and the 3614/3330 because It works for me.
Just a warning, if something goes wrong, don't blame me

Here's some photos

Stupid pin

Bosch 3330.
Did my first oil change today and I still didn't cut off enough nipple, so I had to lift the engine up to get my filter out, but you could just cut more off.
By the way, my buddy brought to my attention that flow rates are different for different filters, so just keep that in mind when doing this. I'm not going to look for the differences in the original and the 3614/3330 because It works for me.
Just a warning, if something goes wrong, don't blame me
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Here's some good reading on oil filter quality. FWIW, someone once told me the factory Neon oil filter was a good one to use for this conversion.
http://minimopar.knizefamily.net/oil.../opinions.html
http://minimopar.knizefamily.net/oil.../opinions.html
Senior Member
Joined: Oct 2009
Posts: 532
Likes: 1
From: Southern Utah
Year: 1992
Model: Cherokee
Engine: 4.0 I6
Originally Posted by cruiser54
Here's some good reading on oil filter quality. FWIW, someone once told me the factory Neon oil filter was a good one to use for this conversion.
http://minimopar.knizefamily.net/oil.../opinions.html
http://minimopar.knizefamily.net/oil.../opinions.html
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
well after a long night of wheeling, it didn't hold up. was doing som pretty tough stuff and bouncing off rocks in a river. seen some smoke pouring out from under my hood, popped it and my filter was smashed. my motor mount shifted and broke, taking out the oil filter with it. so after going to walmart at 10 pm, got the fram filter and some oil to get me home. putting the adapter back on so I don't have to deal with this ****. even if it fixed the leak, I'd rather it leak that little bit then the huge amount when it smashed my filter.
put the adapter back on and wheeled for about 10 hours yesterday with no problems, so that backs up what I said.
haha yeah it did, but it wasn't a "costly" repair so it wasnt to bad. put the adapter back on yesterday morning with the same old o-rings, just cleaned them up good, and it hasn't leaked with the adapter on yet. I was kind of nervous about putting the adapter back on without the roll pin but I had my friend hold the adapter where I wanted it, then cranked it down and its stayed so far. ordering motor mounts this week thankfully though
haha yeah it did, but it wasn't a "costly" repair so it wasnt to bad. put the adapter back on yesterday morning with the same old o-rings, just cleaned them up good, and it hasn't leaked with the adapter on yet. I was kind of nervous about putting the adapter back on without the roll pin but I had my friend hold the adapter where I wanted it, then cranked it down and its stayed so far. ordering motor mounts this week thankfully though
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
put the adapter back on and wheeled for about 10 hours yesterday with no problems, so that backs up what I said.
haha yeah it did, but it wasn't a "costly" repair so it wasnt to bad. put the adapter back on yesterday morning with the same old o-rings, just cleaned them up good, and it hasn't leaked with the adapter on yet. I was kind of nervous about putting the adapter back on without the roll pin but I had my friend hold the adapter where I wanted it, then cranked it down and its stayed so far. ordering motor mounts this week thankfully though
haha yeah it did, but it wasn't a "costly" repair so it wasnt to bad. put the adapter back on yesterday morning with the same old o-rings, just cleaned them up good, and it hasn't leaked with the adapter on yet. I was kind of nervous about putting the adapter back on without the roll pin but I had my friend hold the adapter where I wanted it, then cranked it down and its stayed so far. ordering motor mounts this week thankfully though
People that are doing this could do a relocation...
http://www.jegs.com/i/Derale/259/157...oductId=961946
http://www.jegs.com/i/Derale/259/157...oductId=961946
Senior Member
Joined: Jul 2009
Posts: 739
Likes: 0
From: San Diego, CA
Year: 1996
Model: Cherokee
Engine: 4.0 HO
People that are doing this could do a relocation...
http://www.jegs.com/i/Derale/259/157...oductId=961946
http://www.jegs.com/i/Derale/259/157...oductId=961946
Senior Member
Joined: Oct 2009
Posts: 532
Likes: 1
From: Southern Utah
Year: 1992
Model: Cherokee
Engine: 4.0 I6
Originally Posted by Danian619
That's my question. If you're doing an OF relocation, can you just eliminate the adapter and connect directly to the block?
Seasoned Member
Joined: Jul 2011
Posts: 322
Likes: 0
From: Sierra Vista AZ
Year: 1990
Model: Cherokee
Engine: 4.0
So this whole modification of eliminating the adapter will basically make the oil filter mount on the block the same way the oil filter mounts on small block mopar (273,318,340 and 360) engines? Is this correct?
Seasoned Member
Joined: Jul 2011
Posts: 322
Likes: 0
From: Sierra Vista AZ
Year: 1990
Model: Cherokee
Engine: 4.0
For those with Renix era Jeeps,the issue with the oil filter and male to male nipple is that the original one is long...and has metric threads,so only a select few filters will fit. Do yourself a favor(even if you don't want to eliminate the troublesome oil filter adapter),take and saw down the original long nipple,remove it,and go to the dealership and buy. A nipple for a 95 xj 4.0. It's SAE threads on both ends,and is way shorter,allowed me to run an 090 Moose oil filter. I did this on my 90 and am about to do the mod of getting rid of the adapter. Will remove the nipple from the adapter and screw it directly into the block as instructed after I remove the roll pin.
Seasoned Member
Joined: Jun 2011
Posts: 419
Likes: 0
From: Wichita
Year: 1987
Model: Cherokee
Engine: 4.0
Just outta curiousity if the renix xjs (like mine) have the metric threads on both ends how does an sae thread screw into that? Wouldn't that cross thread it.
*mopar... lol Which is the same thing as a wix/napa btw, if you want to save yourself a couple bucks. (~3 vs 6)
I see no problem with the "long" nipple, I actually like it. Makes it less of PITA, especially if you have your filter setup like the HOs (above the starter). Less of a chance of dropping the filter.
I am going to switch to the standard nipple though, so I can run the FL1a.
I see no problem with the "long" nipple, I actually like it. Makes it less of PITA, especially if you have your filter setup like the HOs (above the starter). Less of a chance of dropping the filter.
I am going to switch to the standard nipple though, so I can run the FL1a.






