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  #1  
Old 06-20-2008, 09:39 PM
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grand_wag_85 grand_wag_85 is offline
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60th Edition J10

A buddy of my brother just totalled a 2001 60th anniversary XJ with a 4.0 and a 5spd. He got it from the insurance company for less than it takes to fill the Waggy up at the pump. I've been dreaming of a fuel injected 4.0 and 5spd tranny in my 82 J10 but my brother mentioned the dash.



That isn't the exact vehicle, you get the point. Just imagine, fuel injection, AC, airbags(probably won't hook 'em up), trip odometer, overhead console and the likes. I wonder if there's a way to do late model style door panels on there too...It's gonna be sweet!

Oh yeah. anyone ever done this before?
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Last edited by grand_wag_85 : 06-20-2008 at 10:53 PM.
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  #2  
Old 06-20-2008, 11:26 PM
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Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
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Quote:
Originally Posted by grand_wag_85
Oh yeah. anyone ever done this before?
Yep, theres a member here that did it on a Wag. Should be able to find it in a search.
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  #3  
Old 06-21-2008, 03:12 AM
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Dmntxn77 Dmntxn77 is offline
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Yeah, it was a ZJ interior....

He did some AMAZING work!!

Would you really want a 4.0 powered J10? Its a great motor, but I think you would be better off with a couple more cylinders for your truck.

Yeah, yeah, I know that there are plenty of members who have 6 cyl FSJs, and love them, but they didnt work as hard as you will have to purposely put one in. After that much work, I would think that you would want MORE POWER..

Just a thought...
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  #4  
Old 06-21-2008, 03:28 AM
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Don't ALL fullsize Cherokee's and Grand Wagoneers have drop down DVD screens for the backseat passengers??????:rol leyes:
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  #5  
Old 06-21-2008, 06:01 AM
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nsanebiker nsanebiker is offline
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Quote:
Originally Posted by dngrs1
Don't ALL fullsize Cherokee's and Grand Wagoneers have drop down DVD screens for the backseat passengers??????:rol leyes:

Yep its called the real world screen, just roll down the window and look.
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  #6  
Old 06-21-2008, 09:39 AM
jamsni jamsni is offline
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Quote:
Originally Posted by dngrs1
Don't ALL fullsize Cherokee's and Grand Wagoneers have drop down DVD screens for the backseat passengers??????:rol leyes:

That is sooooooo last week! I've got a HUD in mine with holographic projectors.
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  #7  
Old 06-21-2008, 10:19 AM
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Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
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Quote:
Originally Posted by Dmntxn77
Yeah, it was a ZJ interior....

He did some AMAZING work!!

Would you really want a 4.0 powered J10? Its a great motor, but I think you would be better off with a couple more cylinders for your truck.

Yeah, yeah, I know that there are plenty of members who have 6 cyl FSJs, and love them, but they didnt work as hard as you will have to purposely put one in. After that much work, I would think that you would want MORE POWER..

Just a thought...
Well, his J has a 258 in it already so it would be a real easy swap and probably better gas milage along with MORE POWER
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1979 Cherokee Golden Eagle - 7" lift, 35x12.5x15
AMC 360 - 4180, TFI, Headers, Dual Exhaust
TH400 - Shift Kit, Deep Pan, Aux Cooler
D20 - Twin Stick'd
F D44 - 3.54, Open
R D44 - 3.54, Lock'd

1979 Cherokee Chief - Parts
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  #8  
Old 06-21-2008, 03:17 PM
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DMNTXN77-I'm planning on having the J10 as a DD or something but not too far from stock. Im also shooting for atleast 22MPG and running E-85. As for power, that's what the 401 in the Waggy is for
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  #9  
Old 06-21-2008, 03:24 PM
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TexTJ209 TexTJ209 is offline
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Quote:
Originally Posted by grand_wag_85
DMNTXN77-I'm planning on having the J10 as a DD or something but not too far from stock. Im also shooting for atleast 22MPG and running E-85. As for power, that's what the 401 in the Waggy is for


22mpg from a 4.0?
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  #10  
Old 06-21-2008, 04:15 PM
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Quote:
Originally Posted by TexTJ209
22mpg from a 4.0?

My old XJ did it no problem
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  #11  
Old 06-21-2008, 04:37 PM
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Dmntxn77 Dmntxn77 is offline
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On E-85?
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  #12  
Old 06-21-2008, 07:18 PM
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TexTJ209 TexTJ209 is offline
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Quote:
Originally Posted by Dmntxn77
On E-85?


Plus the weight difference of an FSJ...


My TJ's 4.0L with 3.07 gearing and stock tires barely got 16mpg.
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  #13  
Old 06-21-2008, 09:02 PM
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grand_wag_85 grand_wag_85 is offline
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Never ran the XJ on E85, just straight gas. I want to run the J10 on it as I can get it for under $1/gallon. The XJ weighed in at 3800 dry and my J10 was 4000 dry. Heck, I'll be happy if I can pull 16MPG's out of it. Ain't a guy allowed to dream?
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  #14  
Old 06-22-2008, 11:53 AM
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Wagonforever Wagonforever is offline
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Quote:
Originally Posted by grand_wag_85
Never ran the XJ on E85, just straight gas. I want to run the J10 on it as I can get it for under $1/gallon. The XJ weighed in at 3800 dry and my J10 was 4000 dry. Heck, I'll be happy if I can pull 16MPG's out of it. Ain't a guy allowed to dream?


My 00 Wrangler got a pretty consistant 21mpg with the 4.0L, 5 speed, 3.73 gears on 30X9.5X15's. It supposedly weighed just under 4,000lbs also and had the aerodynamics of a Kleenex box. The 5 speed makes a big difference though, my buddy had basically the same Jeep except with an auto and he only got 13-14mpg. So I think you should be able to get about 20mpg pretty easily with the 4.0 and a 5 speed in your J-10, probably less on ethanol though.

Heck I've even toyed with the idea of going to the 4.0L and a 5 speed in my Grand, the 4.0L I had was listed at 181hp and 222 ft/lbs or torque, while the 5.9L in my 86 is only listed at 129hp and 245 ft/lbs of torque. So in the end I'd have about the same amount of power, with alot better fuel economy, and going from a 4.2 to a 4.0 you'd be gaining quite abit. But if you want more power you could always build a stroker out of your 4.2 and 4.0 and get upwards of 300hp is you really work it over. But I would think a stock 4.0L would be plenty.
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  #15  
Old 06-22-2008, 02:29 PM
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The PIG Smith The PIG Smith is offline
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Quote:
Originally Posted by grand_wag_85
My old XJ did it no problem
The 4.0L in my '99 WJ never ever broke 20
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...but if it works, I wouldn't touch it.
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  #16  
Old 06-23-2008, 12:44 PM
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Brad W. Brad W. is offline
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that's horrible. My ZJ had almost 300k on it's 4.0L AND full-time 4x4, and it got a consistent 20-23 mpg highway, depending on wind.
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  #17  
Old 06-23-2008, 01:04 PM
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My 93 XJ 4.0 with auto, and I am embarassed to say no clue what gears (but on the lower side) only averaged about 14mpg.......that is why I replaced it with a VW jetta.

Wifes 97 Grand with the 4.0 and auto gets around 17mpg
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  #18  
Old 06-23-2008, 01:19 PM
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The PIG Smith The PIG Smith is offline
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Quote:
Originally Posted by Billygoat
Wifes 97 Grand with the 4.0 and auto gets around 17mpg
That's about the same as what my '99 Grand gets with its 4.0.
From what I've been told, a WJ powered by the 4.7 V8 gets the same if maybe 1-2 MPG better than the 4.0 I6. Sad.

So, given all factors the same, would a 4.0 HO in a FSJ Jeep get better economy than a 258, maybe,
but better than a 360 V8...I dunno...I think it would be close.
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Quote:
Originally Posted by Jayrodoh
...but if it works, I wouldn't touch it.
Quote:
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  #19  
Old 06-23-2008, 02:09 PM
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ComancheRob ComancheRob is offline
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Not to be rude to anyone but, honestly Sean. Go for it!

If youre going for mileage, its been said before, dont go Jeep. Obviously its going to be a quite a task but having the entire XJ instead of sperate parts will help you. If the shifter is too short, get a TJ shifter, IIRC its about an inch taller. Do seats and everything, and if you're really into the fun stuff, modify the XJ taillights to fit the Jtruck taillight holes.
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  #20  
Old 06-23-2008, 02:32 PM
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And I posted on the millage, but not on the rest....

DO IT!!!!

My plan is to get a J Truck, convert it to a 4 door, and find a wrecked grand and transplant as much of the interior (and maybe the drive train) in to it. Kind of make what Jeep would be selling now if they were smart.
I have the ideas, the ability, but no $$$$ or starter trucks
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