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Unread 10-30-2008, 12:08 PM   #196
Stan99
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1978 CJ7 
 
Join Date: Aug 2007
Location: Antioch
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Im getting ready to place my order to hesco for my wiring harness. I know I should just thin the one I have out but I want to get this thing done and not burn it to the ground. So my question is I need the speed sensor for the T-case. Am I stuck getting the one from hesco or can I find one at the local pick-n-pull? I rather not spend that 125 there. Let me know!

Oh I am running the 258, bored .30 over, cam, rockers, 4.0 head and the MPI off of a 93.

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Unread 10-31-2008, 11:00 AM   #197
Stan99
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Bump. Nobody???
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Unread 11-01-2008, 09:22 PM   #198
stopthevoices77
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I just finished putting a 4.0 from a 98 Cherokee into an 84 CJ. And it actually started!!! I was somewhat of a novice mechanic before this project started. Thank God for the internet hahaha. Here are a few things I found out durring the course of this project...
-If you have an OBD II 4.0 out of a 96-99 Jeep, use the ECM from a Wrangler Sport. It is the only one that is guranteed not to have the Security module.
-Most parts can be found used at a junk yard, Except... CPS relocation kit, T for installing temp sending unit, and speed sensor with a mechanical and electrical out put (for the ECM and the gauge). All of these can be purchased through Hesco.
-An electric fan is easier that installing a new water put (to center the fan). However, there are clearance issues with the old fan pully. This can be overcome by installing the electric fan off center towards the passenger side.
I wasted a lot of money buying crap that I did not need or did not work for this application. I think I could have done the complete transplant for under $1700 had I known then what I know now. Heres what I would have needed...
Engine with Harness intake and exaust manifold included ($450)
CPS kit from Hesco ($289)
Fuel pump 2 line to 1 line conversion kit from hesco with regulator and pre-filter
Speed Sensor with mechanical and electric output from hesco
Alternator and Harness from junk yard
Power steeing pump with pully from junk yard
ECM from Junk yard
Electric Fan from Ebay
PDC with fuel pump relay, Automatic shutdown switch and starter relay from junk yard
Air cleaner kit (cheap on ebay)
Wiring diagram (downloaded for $11)
Section of exaust with front O2 sensor from junk yard.
T with threaded insert for Temp Sending unit from Hesco.

This is of course a very budget minded build. I suppose I just got lucky that all of the crap I got from the junk yard actually worked...
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Unread 11-01-2008, 10:28 PM   #199
coas
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You could have done it for less had you didn't bought all that from Hesco...
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Unread 11-14-2008, 11:27 PM   #200
coas
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The Alt. wiring is simple, regulator from pole #20 at the ECU connector and #57 for the sense wire. the third wire is the BAT pole to the PDC.
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Unread 11-19-2008, 08:48 PM   #201
clintb
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4.0 carb swap

I just picked up an 80 CJ7 with a 4.0 already in, Badly I might ad, and has a Clifford manifold. I have been identifying stuff to fix and have a question about the intake. My other CJ7 has a hose to the intake that I believe is coolant? The Clifford has a couple large fittings, one on each end. Is this new manifold in need of a coolant hookup or am I looking a large vacuim lines?
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Unread 11-23-2008, 02:18 PM   #202
Last Boyscout
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a picture would be a big help. is the 4.0 OBDI or OBDII? if you're not sure check the fuel rail. does it have a fuel return to the tank? if so it's an OBDI. they have to be vacuum lines since the 4.0 does not have any coolant running to the manifold. if you can post some good pics we can tell you what you have.
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Unread 11-24-2008, 12:22 PM   #203
clintb
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Photos

Pix are on photobucket. Checked Clifford manual on line and said manifolds are water heated so that probably answers my questions. But will use compressed air to verify.
http://i472.photobucket.com/albums/r...ntsjeep001.jpg
http://i472.photobucket.com/albums/r...ntsjeep002.jpg
http://i472.photobucket.com/albums/r...ntsjeep003.jpg
The engine is of unknown origin am trying to get some numbers to use to reference but have not gotten done yet, has alum valve cover and a sticker on front of valve cover. Are there other ways to determine genre of a 4.0. Injection is gone.

Last edited by clintb; 11-24-2008 at 12:59 PM..
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Unread 11-24-2008, 02:00 PM   #204
VaCJ79
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Since I was looking a rebuilding my 258 and adding FI, this seems like a better option. With my budget I need to be able to keep my T150 trans for a while longer. Will I be able to just bolt the 4.0 right to it? I think I read somewhere I might need a different pilot bushing?
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Unread 11-24-2008, 07:09 PM   #205
whittlecj
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Quote:
Originally Posted by clintb View Post
Pix are on photobucket. Checked Clifford manual on line and said manifolds are water heated so that probably answers my questions. But will use compressed air to verify.



The engine is of unknown origin am trying to get some numbers to use to reference but have not gotten done yet, has alum valve cover and a sticker on front of valve cover. Are there other ways to determine genre of a 4.0. Injection is gone.
click free.
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Unread 11-25-2008, 03:05 PM   #206
Last Boyscout
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if the injection is gone you can make it what ever you want. do you have the ECM? if you do then you will want to match the ECM or buy another to go OBDI or II your choice.
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Unread 11-25-2008, 03:08 PM   #207
Last Boyscout
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VaCJ79, yes you will need a new bushing. just contact Hesco, AA, or Novak. your true question is the CPS. mod the belhousing or relocation kit.
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Unread 11-25-2008, 04:35 PM   #208
VaCJ79
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Last, The relocation kit seems to be the easist thing to do but expensive, unless I can get it cheaper somewhere other than Hesco. I added up all the parts and its looking like 700 without the engine/ rebuild .
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Unread 11-26-2008, 06:40 AM   #209
Last Boyscout
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I too used the relocation kit. After spending the $289 and looking at some forums about modifying the bell housing I wished I grown a set and done the bell housing. If you have the engine out mounting the bell housing and fabbing a bracket for the CPS location wouldn't be very hard. You would need a 4.0 flywheel. But if you prefer to bolt on use the kit.
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Unread 11-28-2008, 06:39 PM   #210
clintb
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4.0 and oil pressure switch?

Does anyone know if the 4.0 has an oil pressure switch? I have a 4.0 put into an 80 cj7 and have no place to plug the oil pressure switch. Am thinking will have to jumper it as there is only place for pressure sender? Inless I have missed it.
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