46RH swap into 96-98??? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > 46RH swap into 96-98???

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineThe Solution to Radius Arm Bind - Meet Lock-N-LoadFS: Jeep Fog Light LED Bulbs! Several Brightness Options!

Reply
Unread 08-02-2010, 11:14 PM   #1
freakinheep89
Registered User
1995 ZJ 
 
Join Date: Jan 2010
Location: Mobile, Alabama
Posts: 3,271
46RH swap into 96-98???

Ive been thinking about the long run plans on my ZJ. I was wondering your honest opinions about whether or not I should sell my 95(OBDI) to get a 96-98(OBDII). the only thing keeping me holding onto the 95 is that the 46RH is stronger than the 46re.

The Problem: i want to do a motor swap to a 5.9 (maybe even stroke it or do a 408 stroker) but I dont want to abandon the FI system. They dont make any programmers or SCT tunes for OBDI equipped jeeps.

Possible solution: ditch the 95 and grab a 96-98 V8 to obtain the OBDII system and wayy more capability.

My hang-up: I have heard that the 46re is a "weak" trans, and I dont wanna lose my 46rh because i have heard its "strong".

I know you can do a 5.9 swap to a 46rh but can you do a 46rh swap to a 96-98 ZJ?

Anyone who has more experience with this and could shed some light on the situation would be greatly appreciated.

T.J.

__________________
TJ-
[SIZE="1"][B]95 ZJ 5.2[/B]- D30/XJ shafts/D35 Yukon alloys,249, 2"BB, 30x9.5"Wildcat EXT,lots of motor mods, rancho shocks & stabilizer.[/SIZE]

[QUOTE=slayercr23;12630497]How would i go about Stroking it?[/QUOTE]
freakinheep89 is offline   Reply With Quote Quick reply to this message
Unread 08-02-2010, 11:20 PM   #2
MoToRNecK
Registered User
1995 ZJ 
 
Join Date: Jul 2010
Location: port orchard
Posts: 178
they are both the same strength one is just an electronic version of the other
MoToRNecK is offline   Reply With Quote Quick reply to this message
Unread 08-02-2010, 11:24 PM   #3
freakinheep89
Registered User
1995 ZJ 
 
Join Date: Jan 2010
Location: Mobile, Alabama
Posts: 3,271
elaborate please
__________________
TJ-
[SIZE="1"][B]95 ZJ 5.2[/B]- D30/XJ shafts/D35 Yukon alloys,249, 2"BB, 30x9.5"Wildcat EXT,lots of motor mods, rancho shocks & stabilizer.[/SIZE]

[QUOTE=slayercr23;12630497]How would i go about Stroking it?[/QUOTE]
freakinheep89 is offline   Reply With Quote Quick reply to this message
Unread 08-02-2010, 11:44 PM   #4
ratmonkey
R.I.P.
 
ratmonkey's Avatar
1997 ZJ 
 
Join Date: Dec 2006
Location: , Pennsylvania
Posts: 19,794
One uses an electronic governor the other doesn't. Everything else beside the valve body and od unit is the same.
__________________
'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

ratmonkey is offline   Reply With Quote Quick reply to this message
Unread 08-03-2010, 11:59 AM   #5
freakinheep89
Registered User
1995 ZJ 
 
Join Date: Jan 2010
Location: Mobile, Alabama
Posts: 3,271
gotcha, alright I'm gonna guess and say since the RE has OBDII that its the one with the electronic gov, but what I really wanna know is can i swap an RH into a 96-98, or would the PCM not function right due to lack of electronic governor? I know you all say their the same strength but i would rather keep the RH if at all possible cause it was rebuilt 18k miles ago.
__________________
TJ-
[SIZE="1"][B]95 ZJ 5.2[/B]- D30/XJ shafts/D35 Yukon alloys,249, 2"BB, 30x9.5"Wildcat EXT,lots of motor mods, rancho shocks & stabilizer.[/SIZE]

[QUOTE=slayercr23;12630497]How would i go about Stroking it?[/QUOTE]
freakinheep89 is offline   Reply With Quote Quick reply to this message
Unread 08-03-2010, 02:36 PM   #6
JrMechanic
Registered User
 
JrMechanic's Avatar
1993 ZJ 
 
Join Date: Oct 2008
Location: Lima, Ohio
Posts: 3,368
NO. It's been asked several times and it is not feasible, plus it's pointless.

You will need custom drive shafts (RH OD unit is longer, and can't use DS's from a 93-95 due to the different pinion lengths on the LP30's, as well as the D35/D44a).

You will have no way to control the TCC or overdrive without a 93-95 V8 PCM. The RE transmissions use a separate TCM to control the transmission functions and would not work with the RH transmission. The only option would be to wire the TCC and OD solenoids directly to a couple of toggle switches.

Then you would also need a transfer case with a 1.55" input to match the 46RH.
__________________
Want to swap an NP242 or NP231 into your ZJ? Here's how:
http://www.jeepforum.com/forum/f13/n...pdated-685644/
JrMechanic is offline   Reply With Quote Quick reply to this message
Unread 08-03-2010, 03:36 PM   #7
ratmonkey
R.I.P.
 
ratmonkey's Avatar
1997 ZJ 
 
Join Date: Dec 2006
Location: , Pennsylvania
Posts: 19,794
Rh uses tcm re uses pcm. You'd need to build a tcm for 96-98 and use an ecu from a manual dodge to use the rh trans in obdii.
__________________
'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

ratmonkey is offline   Reply With Quote Quick reply to this message
Unread 08-03-2010, 04:48 PM   #8
JrMechanic
Registered User
 
JrMechanic's Avatar
1993 ZJ 
 
Join Date: Oct 2008
Location: Lima, Ohio
Posts: 3,368
Quote:
Originally Posted by ratmonkey View Post
Rh uses tcm re uses pcm. You'd need to build a tcm for 96-98 and use an ecu from a manual dodge to use the rh trans in obdii.
46RH definitely uses the PCM for TCC and OD solenoid function, Rat.
__________________
Want to swap an NP242 or NP231 into your ZJ? Here's how:
http://www.jeepforum.com/forum/f13/n...pdated-685644/
JrMechanic is offline   Reply With Quote Quick reply to this message
Unread 08-03-2010, 05:13 PM   #9
ratmonkey
R.I.P.
 
ratmonkey's Avatar
1997 ZJ 
 
Join Date: Dec 2006
Location: , Pennsylvania
Posts: 19,794
my bad, you'd still need to build one to use it in an obdii vehicle as there is no interface for it.
__________________
'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

ratmonkey is offline   Reply With Quote Quick reply to this message
Unread 08-03-2010, 05:35 PM   #10
5-90
Registered User
1988 XJ Cherokee 
 
Join Date: Sep 2006
Location: San Jose, CA, Hammerspace
Posts: 5,344
Late ChryCo transmission naming system (I'll use ones we know about - 37RH, 42RE, and 46RE):

37RH - Three forward speeds, "relative strength index" of 7, Rear-Wheel Drive/Longitudinal Mount, Hydraulic Controls (this is the old A727.)

42RE - Four forward speeds, "relative strength index" of 2, RWD/Longitudinal, Electronic controls (shift and/or governor.) (Behind the 6-242 in the ZJ and WJ)

46RE - Four forward speeds, "RSI" of 6, RWD/Long, Electronic controls (shift and/or governor) (Behind the LA-block V8 in the ZJ)

A few additional examples:

45RFE - Transitional model: Four forward speeds, RSI of 2, RWD/Longitudinal, "full electronic" controls . (Behind the V8-287 in the WJ. Notable for also having two second gear ratios - a "second upshift" and a "second downshift.")

The chart on the Wiki page seems to be reasonably accurate, but I intend to verify it and flesh it out a bit when I get in contact with someone at ChryCo engineering: List of Chrysler transmissions - Wikipedia, the free encyclopedia.

It is worth noting that the "Big 3" automakers have all adopted substantially similar naming systems for their in-house slushboxen - rather than the hodgepodge of model numbers you had to wade through and recall the comparisons for before.
__________________
"recon" (sic - reckon)(tm) "hihgly"(tm) "seceed"(tm)
"Outback AIDS - Alcohol-Induced Dizzy Spells"
5-90 is offline   Reply With Quote Quick reply to this message
Unread 08-03-2010, 05:38 PM   #11
JrMechanic
Registered User
 
JrMechanic's Avatar
1993 ZJ 
 
Join Date: Oct 2008
Location: Lima, Ohio
Posts: 3,368
Quote:
Originally Posted by ratmonkey View Post
my bad, you'd still need to build one to use it in an obdii vehicle as there is no interface for it.
Yeah, it would be almost impossible to make it work without reverting the entire Jeep to OBD I. The easiest thing to do would be to run a hot wire to the transmission and a separate toggle switch to each ground to control the TCC and OD functions. They also make aftermarket controllers for that type of thing, and you can also use a vacuum switch for the TCC.

Not worth the amount of time, rigging, and money involved to make it work... Leave well enough alone.
__________________
Want to swap an NP242 or NP231 into your ZJ? Here's how:
http://www.jeepforum.com/forum/f13/n...pdated-685644/
JrMechanic is offline   Reply With Quote Quick reply to this message
Unread 08-03-2010, 09:07 PM   #12
freakinheep89
Registered User
1995 ZJ 
 
Join Date: Jan 2010
Location: Mobile, Alabama
Posts: 3,271
Ok thanks for all the replies. Its alot more clear now. Ok final question, in your opinions, am i better off getting an OBDII equipped jeep instead of my 95? it seems like there are so many more possibilities with OBDII especially if i'm tryin to get some power out of it. I've found some good deals on some and just feel like its a better system
__________________
TJ-
[SIZE="1"][B]95 ZJ 5.2[/B]- D30/XJ shafts/D35 Yukon alloys,249, 2"BB, 30x9.5"Wildcat EXT,lots of motor mods, rancho shocks & stabilizer.[/SIZE]

[QUOTE=slayercr23;12630497]How would i go about Stroking it?[/QUOTE]
freakinheep89 is offline   Reply With Quote Quick reply to this message
Unread 08-03-2010, 10:00 PM   #13
newfieZJ
Registered User
1995 ZJ 
 
Join Date: May 2008
Location: , Alberta
Posts: 6,473
One point not mentioned here is that the 96-98 5.2's have a 44RE , slightly weaker that the 46RE which is only found in the 98 5.9 model , as you know , 93-95 5.2's have the 46RH

most trans issues are from poor maintenance , insufficiant cooling and the check valve sticking . Install a good cooler , change oil and filter regularly , and remove the check valve . it will give your trans much better odds .

You can get just as good power from a OBD1 , plug and plays are limited , but the bolt on's are endless
newfieZJ is offline   Reply With Quote Quick reply to this message
Unread 08-03-2010, 10:06 PM   #14
freakinheep89
Registered User
1995 ZJ 
 
Join Date: Jan 2010
Location: Mobile, Alabama
Posts: 3,271
yea i know but when you start adding the endless bolt ons, it gets to a point when the PCM cant handle the parts and you have to get a tune or programmer
__________________
TJ-
[SIZE="1"][B]95 ZJ 5.2[/B]- D30/XJ shafts/D35 Yukon alloys,249, 2"BB, 30x9.5"Wildcat EXT,lots of motor mods, rancho shocks & stabilizer.[/SIZE]

[QUOTE=slayercr23;12630497]How would i go about Stroking it?[/QUOTE]
freakinheep89 is offline   Reply With Quote Quick reply to this message
Unread 08-04-2010, 02:14 AM   #15
freakinheep89
Registered User
1995 ZJ 
 
Join Date: Jan 2010
Location: Mobile, Alabama
Posts: 3,271
Ok one more question... i just happen to have a trans(46re) from a 98 5.9, and since i would be doing a 5.9 swap into a 5.2 anyway, would i be able to swap the 46re in place of the 44re. both are in OBDII, so i dont see why it wouldnt work unless I would also need a PCM from a 98 5.9
__________________
TJ-
[SIZE="1"][B]95 ZJ 5.2[/B]- D30/XJ shafts/D35 Yukon alloys,249, 2"BB, 30x9.5"Wildcat EXT,lots of motor mods, rancho shocks & stabilizer.[/SIZE]

[QUOTE=slayercr23;12630497]How would i go about Stroking it?[/QUOTE]
freakinheep89 is offline   Reply With Quote Quick reply to this message
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.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.