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XJ Ask the Question Thread
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Yep treat it like a long block swap. You'll need to plug a hole near the back of the head that had the old temp sending unit in it as '97 only uses a sensor in the thermostat housing.
Junior Member
Joined: Jan 2013
Posts: 47
Likes: 0
From: Indiana
Year: 1997
Model: Cherokee
Engine: 4.0
Thanks Salad fast response! Going to get it tomorrow.
Going to tear it down after I get it and install new gaskets, bearings, rings, lifters, cam and Mellings oil pump. Already have horseshoe intake, Ev6 injectors etc.
88 Engine has no knocks or pings but want a fresh build since going through the trouble.
Junior Member
Joined: Jan 2013
Posts: 47
Likes: 0
From: Indiana
Year: 1997
Model: Cherokee
Engine: 4.0
Nothing happened yet but does have what I believe to be loose bolts on flexplate at crank. The bolts at torque converter where loose and one hole pretty tore up. The knocking I was getting was less apparent after I removed the bolts and used thread locker but is still there. Maybe even cracked flexplate. Also has 266k on it and want to build a fresh 4.0. Only engines I have ever built are SBC. Have a 4.0 I got a few days ago that #6 piston was in a million pieces that I got complete from a 99 Grand for $66!
Crank is fine only damage was hole in block, scored cylinder wall and bent exhaust valve on #6. Scrapping the block and head and keeping everything else for parts. Really just wanted the horseshoe intake but guy wanted engine gone. My 97 has a great body no rust at all lifted with some other mods. Fresh 4.0 will be icing on cake.
Crank is fine only damage was hole in block, scored cylinder wall and bent exhaust valve on #6. Scrapping the block and head and keeping everything else for parts. Really just wanted the horseshoe intake but guy wanted engine gone. My 97 has a great body no rust at all lifted with some other mods. Fresh 4.0 will be icing on cake.
Senior Member
Joined: Apr 2012
Posts: 638
Likes: 0
From: Huntsville, Tn
Year: Different Years (I have several XJ's)
Model: Cherokee
Engine: 4.0 HO
I have this motor I just had built to these specs:

The only thing different on this is I used a Hesco name brand cam instead of Compcam.
It's a bad A motor.
I don't need it anymore. I built it to race but sold my race XJ.
It has 0 miles on it.
What could this motor sale for?
What's it worth?
I'm thinking about out selling it.

The only thing different on this is I used a Hesco name brand cam instead of Compcam.
It's a bad A motor.
I don't need it anymore. I built it to race but sold my race XJ.
It has 0 miles on it.
What could this motor sale for?
What's it worth?
I'm thinking about out selling it.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Anything can be easy or hard depending if you have the right tools. I did mines in the street using the stock jacks and hand tools. Id say a 2 where as 10 is the hardest but maybe its an 8 for you
I trust you're being a smartass lol
I trust you're being a smartass lol
CF Veteran
Joined: Sep 2011
Posts: 10,447
Likes: 0
From: Frederick, MD
Year: 1989
Model: Cherokee
Engine: 4.0
Yes and no. Depends if he's replacing just the pads or replacing everything.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
I have this motor I just had built to these specs:
Attachment 236963
The only thing different on this is I used a Hesco name brand cam instead of Compcam.
It's a bad A motor.
I don't need it anymore. I built it to race but sold my race XJ.
It has 0 miles on it.
What could this motor sale for?
What's it worth?
I'm thinking about out selling it.
Attachment 236963
The only thing different on this is I used a Hesco name brand cam instead of Compcam.
It's a bad A motor.
I don't need it anymore. I built it to race but sold my race XJ.
It has 0 miles on it.
What could this motor sale for?
What's it worth?
I'm thinking about out selling it.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Nothing happened yet but does have what I believe to be loose bolts on flexplate at crank. The bolts at torque converter where loose and one hole pretty tore up. The knocking I was getting was less apparent after I removed the bolts and used thread locker but is still there. Maybe even cracked flexplate. Also has 266k on it and want to build a fresh 4.0. Only engines I have ever built are SBC. Have a 4.0 I got a few days ago that #6 piston was in a million pieces that I got complete from a 99 Grand for $66!
Crank is fine only damage was hole in block, scored cylinder wall and bent exhaust valve on #6. Scrapping the block and head and keeping everything else for parts. Really just wanted the horseshoe intake but guy wanted engine gone. My 97 has a great body no rust at all lifted with some other mods. Fresh 4.0 will be icing on cake.
Crank is fine only damage was hole in block, scored cylinder wall and bent exhaust valve on #6. Scrapping the block and head and keeping everything else for parts. Really just wanted the horseshoe intake but guy wanted engine gone. My 97 has a great body no rust at all lifted with some other mods. Fresh 4.0 will be icing on cake.
FYI 99 WJ block isn't a bolt-on into an XJ anyway
.





