Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here! ZJ (93-98), WJ (99-04), WK (05+)
All ZJ/WJ/WK specific tech questions asked here!

Life of a 4.7 V8

Thread Tools
 
Search this Thread
 
Old 02-21-2013, 01:50 AM
  #16  
Member
 
mikeg216's Avatar
 
Join Date: Sep 2008
Posts: 126
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default If you must buy a WJ

Get the 4.0 they get 250k with bare minimum maintenance, will tow up to 5k with no problem, just turn od off as you should anyways.. Never tow with of on

If possible get a zj with the 5.2 v8 low mileage ones are still out there, they made millions
Old 02-22-2013, 03:00 PM
  #17  
Seasoned Member
 
farmerjohnson's Avatar
 
Join Date: Oct 2010
Location: Camp Lejeune, NC
Posts: 454
Likes: 0
Received 0 Likes on 0 Posts
Year: 1993
Model: Cherokee
Engine: 4.0 HO
Default

Originally Posted by lookin2wheel
I have a 2000 Dodge Durango with the 1st generation 4.7L. I have all maint. documents as it was a ChryCo Corprate vehicle. At 93K miles, I had to have the heads redone.....blown gasket between cylinders 1 & 3. Almost had to replace the heads to the tune of over $1800 just for the heads, the machine shop was JUST able to machine them within specs. Since then, I have had to replace EVERY SINGLE sensor on that motor; to include the power steering pressure sensor....really?!?! It has a valve tick, I guess the OHC motors from Dodge have a history of lash adjusters collapsing and causing valve train issues. Also, the rocker arms "jump off" and cause problems with the valve train. Its can be hard to start at times...I know, its a Dodge....... In my honest opinion, Id stay way clear of Dodges one and ONLY OHC V8. Theres a reason the Hemis are pushrod motors. Ill never buy another 4.7L powered Chrysler product. A buddy of mine had a 1999 Grand with the 1st gen 4.7L. At 73K, the oil pump quit and it threw a rod through the side of the block. Ruined the block and broke the bed plate in 3 places to include the crank journal.
The dodge 4.7 is a different motor from the 4.7 jeep. Retarded but then again Chrysler...... yea. But anyways the jeep 4.7 is an alright motor the 4.7ho has different heads and cam and is tuned very well. Its hit ot miss on a good one really cause it seems to me that jeep motors are meant to be ran hard and not babied. Idk why but thata what ive seen. Just my .02
Old 02-23-2013, 02:45 PM
  #18  
Member
 
FAlfani81's Avatar
 
Join Date: Mar 2011
Location: Farmingville, NY
Posts: 158
Likes: 0
Received 2 Likes on 1 Post
Year: 1993
Model: Grand Cherokee
Engine: 5.2
Default

Originally Posted by farmerjohnson
The dodge 4.7 is a different motor from the 4.7 jeep. Retarded but then again Chrysler...... yea. But anyways the jeep 4.7 is an alright motor the 4.7ho has different heads and cam and is tuned very well. Its hit ot miss on a good one really cause it seems to me that jeep motors are meant to be ran hard and not babied. Idk why but thata what ive seen. Just my .02
I beat the ***** off my 4.7ho... its not happy anymore. I'm so not impressed with the 4.7 at all! I got it with 32k, and i'm just hitting 78... I wish I never got the thing. And cause I can't be bothered with fixing the head gasket, I just burp it once a week lol. I don't even care about it anymore. Awful Awful motor!
Old 02-23-2013, 03:04 PM
  #19  
Seasoned Member
 
farmerjohnson's Avatar
 
Join Date: Oct 2010
Location: Camp Lejeune, NC
Posts: 454
Likes: 0
Received 0 Likes on 0 Posts
Year: 1993
Model: Cherokee
Engine: 4.0 HO
Default

Originally Posted by FAlfani81
I beat the ***** off my 4.7ho... its not happy anymore. I'm so not impressed with the 4.7 at all! I got it with 32k, and i'm just hitting 78... I wish I never got the thing. And cause I can't be bothered with fixing the head gasket, I just burp it once a week lol. I don't even care about it anymore. Awful Awful motor!
My buddies 4.7ho has 120, 000 on it and still is running strong. I guess we got lucky.
Old 02-23-2013, 03:18 PM
  #20  
Caracticus Potts The Mod
 
Willys55's Avatar
 
Join Date: Jul 2009
Location: Hainsville, NJ
Posts: 5,298
Received 9 Likes on 8 Posts
Model: Grand Cherokee
Default

key word with the 4.7------"maintenance"
Old 02-23-2013, 07:03 PM
  #21  
Member
 
mikeg216's Avatar
 
Join Date: Sep 2008
Posts: 126
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

Originally Posted by farmerjohnson
The dodge 4.7 is a different motor from the 4.7 jeep. Retarded but then again Chrysler...... yea. But anyways the jeep 4.7 is an alright motor the 4.7ho has different heads and cam and is tuned very well. Its hit ot miss on a good one really cause it seems to me that jeep motors are meant to be ran hard and not babied. Idk why but thata what ive seen. Just my .02
Sorry friend but someone has lied to you, it's simply not true.
Old 02-23-2013, 08:43 PM
  #22  
Seasoned Member
 
jeepcherokee99's Avatar
 
Join Date: Mar 2011
Posts: 275
Likes: 0
Received 2 Likes on 2 Posts
Year: 1999
Model: Grand Cherokee
Engine: 4.0
Default

Her choice of the WJ is wise, I believe. There are so many other look-alike SUVs out there you have to see the grill or read the badges to know it's a Jeep! It is stylish and contemporary. Hell, the Mercedes even looks similar.

That is because Mercedes owned jeep from 99 to like 04.
Old 02-23-2013, 09:53 PM
  #23  
Seasoned Member
 
Bluebyu's Avatar
 
Join Date: Sep 2012
Location: Long Island, NY
Posts: 446
Likes: 0
Received 0 Likes on 0 Posts
Year: 1998
Model: Cherokee
Default

glad i didnt buy a 4.7 WJ now haha
Old 02-24-2013, 02:48 AM
  #24  
Seasoned Member
 
farmerjohnson's Avatar
 
Join Date: Oct 2010
Location: Camp Lejeune, NC
Posts: 454
Likes: 0
Received 0 Likes on 0 Posts
Year: 1993
Model: Cherokee
Engine: 4.0 HO
Default

Originally Posted by mikeg216
Sorry friend but someone has lied to you, it's simply not true.
I stand corrected, The 4.7 HO is different that the other 4.7s. Different heads and cams. As well as the computer is flashed different among other things. I forgot to specify that, my bad lol.
Old 02-24-2013, 04:03 AM
  #25  
CF Veteran
 
askingxforxit's Avatar
 
Join Date: Feb 2011
Location: Long Beach, Ca
Posts: 3,500
Likes: 0
Received 0 Likes on 0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Default

Perfect timing, I'm looking at buying one of two '02 WJs. One has the 4.7HO w/169,000 miles and the other is standard 4.7 w/147,000 miles but 15,000 on the rebuilt engine. Both have quadradrive, tow package and all the other bells and whistles. Can't wait until more of you guys chime in, I'm not swayed either way yet.
Old 02-24-2013, 06:44 PM
  #26  
Senior Member
 
muffinman's Avatar
 
Join Date: May 2010
Location: Johnson County, Kansas
Posts: 701
Likes: 0
Received 1 Like on 1 Post
Year: 1995
Model: Cherokee
Engine: 4.0 HO
Default

It's going to come down to personal prefrence. I own a 02 WJ Overland with the 4.7 HO. I have maintained it well from the day I got it. It has been and still is a awesome vehicle. No problems. I own a XJ and a TJ with the 4.0 HO. Great motors, no problems with them either. Please don't tell me the 4.0 will tow as good as the 4.7 because I have first hand experince and it is not true.
Old 02-24-2013, 06:49 PM
  #27  
Seasoned Member
 
Bluebyu's Avatar
 
Join Date: Sep 2012
Location: Long Island, NY
Posts: 446
Likes: 0
Received 0 Likes on 0 Posts
Year: 1998
Model: Cherokee
Default

Originally Posted by muffinman
It's going to come down to personal prefrence. I own a 02 WJ Overland with the 4.7 HO. I have maintained it well from the day I got it. It has been and still is a awesome vehicle. No problems. I own a XJ and a TJ with the 4.0 HO. Great motors, no problems with them either. Please don't tell me the 4.0 will tow as good as the 4.7 because I have first hand experince and it is not true.
thats the one reason I was looking at getting a wj with a 4.7 to tow my mustang to the track. a few of my buddies do it. I love my XJ but i wouldn't dare to tow a 3,500lb car for 3 hours each way to the track with it. Probably end up using one of my parents trucks. My mother has a 12 z71 suburban and my father has 10 expedition with a towing package. They tow a huge mobile home with the Ford so im sure it would have no problem with a car behind it.. just leave them the XJ for the day.
Old 02-25-2013, 04:00 AM
  #28  
Member
 
mikeg216's Avatar
 
Join Date: Sep 2008
Posts: 126
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

Originally Posted by farmerjohnson
I stand corrected, The 4.7 HO is different that the other 4.7s. Different heads and cams. As well as the computer is flashed different among other things. I forgot to specify that, my bad lol.
The only reason for the 4.7 H. O. Is because Chrysler couldn't keep up with the demand for the 5.7 hemi, could you imagine a solid axle 5.7 hemi rig?
Old 02-25-2013, 07:02 AM
  #29  
Senior Member
 
lookin2wheel's Avatar
 
Join Date: Feb 2010
Location: Barney Georgia
Posts: 587
Likes: 0
Received 0 Likes on 0 Posts
Year: 1991
Model: Cherokee
Engine: 4.0L HO
Default

Originally Posted by farmerjohnson
I stand corrected, The 4.7 HO is different that the other 4.7s. Different heads and cams. As well as the computer is flashed different among other things. I forgot to specify that, my bad lol.

Wrong again. The heads are the same. The intake manifold is different. Same cams. Possibly slightly retuned PCM...Ill have to look into that. The 1st gen ('99-'00) 4.7s had 16 tooth reluctor ring for the crankshaft position. The 2nd gen ('01 to present) have 32 tooth rings, allowing for better timing and slightly better performance gains, along with the reworked "HO" intake and PCM programming (maybe). Either way, the motor is nothing more than a boat anchor and the 4.7L is FINALLY going away.....If I could afford a 5.7L swap into my Durango, I would and sell the 4.7L off for scrap.
Old 02-25-2013, 07:15 PM
  #30  
Old fart with a wrench
 
dave1123's Avatar
 
Join Date: Nov 2010
Location: Manlius, east of Syracuse, NY
Posts: 14,398
Received 723 Likes on 628 Posts
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
Default

Originally Posted by mikeg216
The only reason for the 4.7 H. O. Is because Chrysler couldn't keep up with the demand for the 5.7 hemi, could you imagine a solid axle 5.7 hemi rig?
AWESOME! They'd need a more rugged transmission, though.


Quick Reply: Life of a 4.7 V8



All times are GMT -5. The time now is 01:10 AM.