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Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Freshening Up A 4.0 Before Swap

USA Standard Chromoly Front Axle Shaft Kits with Dana 30 4Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineAdvance Adapters SYE Kits

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Unread 03-28-2013, 01:22 PM   #31
voz
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1991 YJ Wrangler 
 
Join Date: Jul 2011
Location: Clayton, NC
Posts: 123
Help,
Please before this item gets sold..

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Unread 03-28-2013, 01:35 PM   #32
Que89YJ
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1989 YJ Wrangler 
 
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I am not sure but you can go online to any of the parts places and see if they have the same part number.
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Unread 04-16-2013, 09:13 AM   #33
voz
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Unread 04-16-2013, 09:15 AM   #34
voz
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Just a few pics of what I got done last weekend...
Cleaning these parts at a B I T C H !!!
It has been a slow process, but with my friends out and about on their YJ's, I get motivated
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Unread 05-13-2013, 09:50 AM   #35
voz
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damn,
this build is a slow process....
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Unread 05-13-2013, 12:41 PM   #36
idaholtby
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1991 YJ Wrangler 
 
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The 2.5L fuel lines will be too short for the 4.0L fuel rail. When I swapped my 2.5L for the current 4.0L I had to use a Fuel injector line repair kit that allowed me to splice into the original 2.5L lines which then allowed the extra length needed to reach the 4.0L fuel rail connections. The fuel rail connections on the 4.0L are two cylinders further forward of where they are on the 2.5L.
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Unread 05-13-2013, 01:28 PM   #37
voz
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Thanks,

I'm still looking for the lines, will go to the local pullurown part soon...
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Unread 05-13-2013, 01:34 PM   #38
idaholtby
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Quote:
Originally Posted by voz View Post
Thanks,

I'm still looking for the lines, will go to the local pullurown part soon...
Well if need be, the 2.5L lines can be made to work if you can't find the 4.0L lines, just that you would have to splice in the repair kit to lengthen them. Just trying to give you all options available. If IIRC, the cost for such a kit was around $20 bucks. Just don't remember if that was per line or covered both. Most auto part stores carry these kits. It is kind of a B to splice into the nylon lines, but is doable if you can't source the proper 4.0L lines.
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Unread 05-13-2013, 02:18 PM   #39
voz
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Very good info indeed!
I still have time,
I gave myself until 8/1/13 to be finished with this swap/build
I am also eyeing one on ebay...
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Unread 05-20-2013, 09:15 PM   #40
voz
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I did not remove head, after seeing how clean/ sludge free engine looked after removing valve cover and oil pan.

I still need a few odds and ends, oil pressure sending unit & dip stick tube ( i bent it )

still have to get transmission looked at. also need a 23 spline 231
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Unread 05-21-2013, 01:28 PM   #41
Siva283
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Quote:
Originally Posted by voz View Post
I did not remove head, after seeing how clean/ sludge free engine looked after removing valve cover and oil pan.

I still need a few odds and ends, oil pressure sending unit & dip stick tube ( i bent it )

still have to get transmission looked at. also need a 23 spline 231
You can swap the input shaft in your current 231 to the 23 spline if you can find an input shaft for the right price. It would probably be alot cheaper than getting another 231.
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1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

[QUOTE=Magnum;14117863] I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim[/QUOTE]

[QUOTE=ldso;16498409]. It started with a $200 axle, and a few thousand dollars later I was done :)[/QUOTE]

[QUOTE=Luuca;16122017]diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...[/QUOTE]

[QUOTE=Overhead;17658665]this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.[/QUOTE]
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Unread 05-22-2013, 02:05 AM   #42
billybooster2
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If you change tranny from manual to auto or vice versa, your ecm MAY need to be changed / played with to bypass a neutral safety switch...just a thought,,
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Unread 05-22-2013, 04:33 AM   #43
voz
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I have ECM from donor rig.

I have a 21 spline, but it needs rebuilding. Hopefully I can find a shaft fairly cheap.
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Unread 06-08-2013, 06:00 PM   #44
voz
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I finally unbolted everything off the 4.2 so hopefully tomorrow I can pull it out. I have to then sand and paint the engine bay before 4.0 goes in..

One question, what do I. Need to save from 4.2, ba10 or NP 207 that need to go to my 4.0, Tf999 swap?

I would like to sell 4.2, ba10 & np207. I need the money to pick up odds and ends that I know I will run into with this swap.
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Unread 06-20-2013, 12:03 PM   #45
voz
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Any thoughts on which oil cooler to use with my OEM radiator?
I'm looking for ease of installment/placement
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