pretty sure i grenaded the 5.2. - JeepForum.com
Reply
 
LinkBack Thread Tools
post #1 of 26 Old 12-29-2014, 11:27 PM Thread Starter
dflewelling
Registered User
1995 ZJ 
 
Join Date: Aug 2014
Location: Sioux City
Posts: 274
pretty sure i grenaded the 5.2.

Title says it all. I've got no power, its misfiring badly, and compression was little to none in cyl. 4/6. I now suspect a blown head gasket between cylinders or a badly cracked head. However, no oil/coolant mix, and it smokes badly on startup. I get a slight metallic scuffing sound at lower rpm, sounds like valvetrain noise. I'm thinking of either
A,
Replacing cylinder head and head gasket for pass side (head gaskets for both)
Or
B
Pulling anothe 5.2 from a low mileage wrecked zj (year 1998)
Now if I go that route, mines a 95. Aside from intake and exhaust manifolds, injectiors, etc, will everything bolt up and work? I believe the 98 5.2 is paired with a 46re, mines a 46rh, will the torque converter and related components be the same? For $250 and hoist rental this sounds like the way to go.
Also pondered a 5.9, but I just want my DD back.

Opinions!
Thank you!

dflewelling is offline  
Sponsored Links
Advertisement
 
post #2 of 26 Old 12-30-2014, 03:20 AM
newfieZJ
Registered User
 
newfieZJ's Avatar
1995 ZJ 
 
Join Date: May 2008
Posts: 6,557
My engine is from a 2001 Ram in my 95 , you'll have no issues , just use everything from yours . The 98 will have a 44RE , just use your stuff , it's better

1995 Orvis build

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1988 MJ build

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1998 Slate 5.9 build

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1998 Platinum 5.9 build

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
newfieZJ is offline  
post #3 of 26 Old 12-30-2014, 12:30 PM
kg6mov
Hears the voices
 
kg6mov's Avatar
1996 ZJ 
 
Join Date: Nov 2012
Location: Cupertino
Posts: 16,063
The block will work but for a 98 to 95 you'll need to swap the intake and the exhaust manifolds for EGR. 98 is 44re as stated just use your trans stuff.

Probably will have to swap a few sensors as well, mainly because they changed the connectors in 97 for no ****ing good reason.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1984 F250, 460 BB, T19, work truck/future tow pig
1987 Mercedes 300D Turbo, the diesel daily, 30mpg in style

Quote:
Originally Posted by Texas ZJ1 View Post
I heard someone yell "mall crawler" from the back porch. I'll go see who said that. Be right back.
kg6mov is offline  
 
post #4 of 26 Old 12-30-2014, 07:11 PM
Scrubberguy
Registered User
1997 ZJ 
 
Join Date: Jun 2014
Location: Pomona
Posts: 163
Here's what I'd do if you have the room:

I'd buy the low milage 5.2 and swap it in then I'd put the old 5.2 on an engine stand and tear it down.

You may be able to get by with a head rebuild rings and bearings for a low buck rebuild, or if your budget allows do the whole nine yards with a complete engine kit.

The idea is to have a back up engine ready to run if you need it again and a fresh motor can do wonder as a sales point if you decide to move the ZJ for something else.

In sales we call that a " win-win" situation.
Scrubberguy is offline  
post #5 of 26 Old 12-30-2014, 11:30 PM
Myusername1674
Registered User
 
Myusername1674's Avatar
1995 ZJ 
 
Join Date: Dec 2011
Location: Chattanooga
Posts: 2,310
I vote engine swap, I'm prepping a 99 5.9 from a dodge truck. It takes some extra parts but it is doable

95 FiveTwo ZJ, DD, Lifted, Locked on 35s,
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
(in progress)



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Myusername1674 is offline  
post #6 of 26 Old 12-31-2014, 01:40 AM Thread Starter
dflewelling
Registered User
1995 ZJ 
 
Join Date: Aug 2014
Location: Sioux City
Posts: 274
Hmmm I've pondered the 5.9 drop in...i know id have to tweak with fuel management. How doable is that on a 95?
dflewelling is offline  
post #7 of 26 Old 12-31-2014, 04:29 AM
Myusername1674
Registered User
 
Myusername1674's Avatar
1995 ZJ 
 
Join Date: Dec 2011
Location: Chattanooga
Posts: 2,310
Quote:
Originally Posted by dflewelling View Post
Hmmm I've pondered the 5.9 drop in...i know id have to tweak with fuel management. How doable is that on a 95?
If you check the faqs of the zj page I think it gives a decent description of the swap. You'll need the 5.9 (or course), new engine mounts, new torque converter, and a few others things. As well as of course new seals and sensors and what not, depending on how far you want to go.

Mines completely honed, bored .40 over with new heads and pistons. But the 5.9 block I bought was toast, so I went ahead and got it done all the way. Though my wallets been bleeding ever since



Mines a long term project, but it doesn't have to be.

95 FiveTwo ZJ, DD, Lifted, Locked on 35s,
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
(in progress)



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Myusername1674 is offline  
post #8 of 26 Old 12-31-2014, 04:32 AM
Myusername1674
Registered User
 
Myusername1674's Avatar
1995 ZJ 
 
Join Date: Dec 2011
Location: Chattanooga
Posts: 2,310
Here ya go, this' ll help get you started. And just for future reference if someone visits this page

https://www.jeepforum.com/forum/showthread.php?p=3020645

95 5.2 to 5.9 will need

5.9 flexplate
5.9 harmonic balancer
5.9 drivers side motor mount
Torque converter from 96-98

(Idk if that link works but hopefully, I'm on mobile)

95 FiveTwo ZJ, DD, Lifted, Locked on 35s,
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
(in progress)



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Myusername1674 is offline  
post #9 of 26 Old 12-31-2014, 07:18 AM Thread Starter
dflewelling
Registered User
1995 ZJ 
 
Join Date: Aug 2014
Location: Sioux City
Posts: 274
Valuable info man, greatly appreciated. Would I still use my '262 injectors and stock fuel pump? I may seriously consider this
dflewelling is offline  
post #10 of 26 Old 12-31-2014, 07:46 AM
Myusername1674
Registered User
 
Myusername1674's Avatar
1995 ZJ 
 
Join Date: Dec 2011
Location: Chattanooga
Posts: 2,310
Quote:
Originally Posted by dflewelling View Post
Valuable info man, greatly appreciated. Would I still use my '262 injectors and stock fuel pump? I may seriously consider this
I think you may want new injectors, not sure. And just like any engine swap, I imagine you could stick with the fuel pump and radiator that's there, but it wouldn't hurt to go new

95 FiveTwo ZJ, DD, Lifted, Locked on 35s,
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
(in progress)



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Myusername1674 is offline  
post #11 of 26 Old 12-31-2014, 07:54 AM
HighLonesome
Web Wheeler
 
HighLonesome's Avatar
1995 ZJ 
 
Join Date: Feb 2005
Location: New Mexico
Posts: 8,056
I've done a couple 5.9 swaps and have had several 5.2/5.9 motors in ZJs. If you have a lot of armor, hitch, and weight in general I'd do a niner. 45 ft/lbs and the superior power curve are very noticeable. If your ZJ is just a lightweight DD, I'd stick with the 5.2.
HighLonesome is offline  
post #12 of 26 Old 12-31-2014, 08:02 AM
HighLonesome
Web Wheeler
 
HighLonesome's Avatar
1995 ZJ 
 
Join Date: Feb 2005
Location: New Mexico
Posts: 8,056
Quote:
Originally Posted by dflewelling View Post
Hmmm I've pondered the 5.9 drop in...i know id have to tweak with fuel management. How doable is that on a 95?
95 is the best year for a 5.9 swap. You keep the stronger 46RH. The stock fuel system can deliver more fuel than any other ZJ year. No tweaks necessary. The one drawback is can't do any tuning except for the Mopar performance computer and one or two other expensive options.

Basically you drop in a 5.9 longblock, keeping all other stock components. And plan on buying a pair of heads.
HighLonesome is offline  
post #13 of 26 Old 12-31-2014, 10:14 AM
Texas ZJ1
Jeep Jedi Master
 
Texas ZJ1's Avatar
1994 ZJ 
 
Join Date: Mar 2003
Location: Omaha
Posts: 20,413
I did the 5.9 swap. Best mod to my zj ever.

04 4.7 HO, limited
04 4.7 HO, Overland

08 Z71 Suburban, front leveling kit with rear spacers. 285/65 18s Nitto TerraGrappler G2s

94 5.9 Laredo 6.5 RE lift with 35 Maxxis Bighorns
and 33 Bridgestone Duelers
Detroit and true trac
Red Jeep Club Member
REDNECK JCM
Texas Jeep Owner #6
USN Jeep Club #4

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

602.841.3355

For your performance needs:


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

480.998.366
Texas ZJ1 is offline  
post #14 of 26 Old 12-31-2014, 11:25 AM Thread Starter
dflewelling
Registered User
1995 ZJ 
 
Join Date: Aug 2014
Location: Sioux City
Posts: 274
Quote:
Originally Posted by HighLonesome View Post
95 is the best year for a 5.9 swap. You keep the stronger 46RH. The stock fuel system can deliver more fuel than any other ZJ year. No tweaks necessary. The one drawback is can't do any tuning except for the Mopar performance computer and one or two other expensive options.

Basically you drop in a 5.9 longblock, keeping all other stock components. And plan on buying a pair of heads.
Probably because of cylinder head cracks?

I would do the swap ina heartbeat, but motor mounts, torque converter and flexplate would be needed. I'm in a bind right now and will have just enough for the straight replacement and a few other misc. Expenses that I know will be encountered along the way
dflewelling is offline  
post #15 of 26 Old 12-31-2014, 12:49 PM
HighLonesome
Web Wheeler
 
HighLonesome's Avatar
1995 ZJ 
 
Join Date: Feb 2005
Location: New Mexico
Posts: 8,056
Quote:
Originally Posted by dflewelling View Post
Probably because of cylinder head cracks?

I would do the swap ina heartbeat, but motor mounts, torque converter and flexplate would be needed. I'm in a bind right now and will have just enough for the straight replacement and a few other misc. Expenses that I know will be encountered along the way
You can shim the 5.2 motor mount with a spacer or washers. And late 95 won't need a torque converter. My 95 didn't, but my 94 did. Donor niner should have flexplate and harmonic balancer. Just fyi
HighLonesome is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome