4.0 vs. 5.2 - JeepForum.com
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post #1 of 64 Old 01-20-2010, 05:01 PM Thread Starter
betard_foosier
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4.0 vs. 5.2

I am in the market for a ZJ, and I dont know whether to go with a 4.0 or 5.2 model. I found a deal on a 5.2 with the tow package, which I understand has a D44 out back. Is this true? I know the 4.0 is legendary as far as longevity, my brothers runs like a top at 280k. How about the 5.2? Or 4.7 for that matter? I like bulletproof!

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post #2 of 64 Old 01-20-2010, 05:22 PM
ZeJokee
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I have the 5.2l with 207,XXX and it is running strong. Not all ZJs with the 5.2l have the d44. If you ever plan on lifting your jeep and getting bigger tires or towing you will want the 5.2l. I am not sure about the 4.7 in longevity. Hopefully some one else will chime in but the 4.7 in the the WJs. Only down fall of the 5.2l is it is usually paired with the 249 t-case which is easy fixed by swapping in a 242. In my opinion I would get the 5.2l. Gas mileage is roughly the same between the 4.0 and 5.2.

99 WJ Ltd, Blacked out, 4.7L, 242j Swap, 2'' BB, 245/75/16 Kuhmo Venture AT KL78, Flow Master Super 40, MagnaFlow high flow Cat, Akebono caliper upgrade, Addco rear swaybar, Westin brush guard, Moog Super Trail Boss, Rancho RS5000, Rola roof rack with dual kayak J hooks, PAC-AOEM-CHR, Sony Xplod 1200w amp, 2 Sony Xplod 12'' subs, 118,XXX miles (SOLD)
93 ZJ Ltd, Blacked out, 5.2L, Reman 46RH, Reman 242 Swap, 3.5'' IRO + 2" BB, 33x12.50r15 Mud Claw MTX radials, Bushwacker Flares, 216,XXX miles (Still parked in NC)
04 F-350 SD Crew Cab FX4 Lariat, 6.0 PSD SRW, Head studs, AFE Stage 2 SI Pro Guard 7 intake, Blue Spring mod, 150,XXX Miles


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post #3 of 64 Old 01-20-2010, 05:25 PM
BigRed4x4
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Gotta give my 4.0 props at 170k runs like a caddy, but if you do towing or driving across mountains (which I guess not because you live in Kansas) then the 5.2 is probably a better option. Of course a little more power could never hurt in any situation. But like I said my '93 4.0 pulls my 12 ft. trailer loaded with little struggle, and that's with two mowers on it, but could stand a little more power when it comes to the hills here in TN.

'93 ZJ, 4.0L, D30 & D35, NP231, 4" Lift, 31" BFG's, Soft 8's, Painted Cladding, Glasspack, JVC Deck, CB, Lightbars, JKS Discos & TB, Tow Hooks Everywhere...more crap.
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post #4 of 64 Old 01-20-2010, 05:26 PM
KHoff90
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If you found a good deal on a 5.2 then go for it. Most guys on here with the 5.2 have reported good reliability as long as you maintain it like you should. Personally, the 4.0's power isn't bothersome at all to me, even with 31s; however the d35 out back kinda sucks lol.

1997 ZJ 4.0 - IRO 3.5" Lift. 31x10.5x15 M/Ts - Sold January 2011 :(

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post #5 of 64 Old 01-20-2010, 05:28 PM
BigRed4x4
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Ya, 3.55's aren't the best for 31's.

'93 ZJ, 4.0L, D30 & D35, NP231, 4" Lift, 31" BFG's, Soft 8's, Painted Cladding, Glasspack, JVC Deck, CB, Lightbars, JKS Discos & TB, Tow Hooks Everywhere...more crap.
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post #6 of 64 Old 01-20-2010, 05:37 PM
KHoff90
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nevermind

10char

1997 ZJ 4.0 - IRO 3.5" Lift. 31x10.5x15 M/Ts - Sold January 2011 :(

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post #7 of 64 Old 01-20-2010, 06:16 PM
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Quote:
Originally Posted by BigRed4x4 View Post
Ya, 3.55's aren't the best for 31's.
try 3.55s with 33s its fun. my 4.0 runs pretty good for 177xxx miles
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post #8 of 64 Old 01-20-2010, 06:25 PM
BigE3
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I like the 4.0 in my ZJ better than my 5.2 in my Dakota. Pair the 4.0 with the right set of rears and you'll have no problems towing.

I like my Jeep, just like my women. 'Loose and Flexible'
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post #9 of 64 Old 01-20-2010, 06:32 PM
JrMechanic
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Seriously? Do a search. This topic gets covered once a week.

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post #10 of 64 Old 01-20-2010, 06:49 PM
ZJ5point2GCL
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5.2 for sure, both engines go for ever, and the mpg is pretty much the same, but the 5.2 has so much more power, and torque, plus if you plan on lifting or bigger tires, they are 3.73's instead of 3.55's with a v8.
and with tow package, you get a d44A
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post #11 of 64 Old 01-20-2010, 07:14 PM
95jeepsterV8
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i say go with the 5.2 its a great motor no problems and im at 135,000
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post #12 of 64 Old 01-20-2010, 07:14 PM
1993ZJ
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I have a 93 4.0 with around 180K on it. My ZJ came with a tow package and therefore has 3.73 axle ratios. I have plenty of power and last summer when i checked my mileage i was getting 22. Personally i love the 4.0. I have the 4.7 abd 3.55s in my dakota and i get around 18 combined city/hwy. The truck has good power, but not excessively more then the 4.0. just my 2 cents
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post #13 of 64 Old 01-20-2010, 07:22 PM
comptiger5000
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96+ 5.2s had the D44a rear. All 5.2s had 3.73 rear gears (except a rare few 93s with 3.55). All 93-95 had the D35 rear end. Most 96+ 4.0 had the D35, some tow packages got the D44a. 4.0 has 3.55 gearing, 3.73 with tow package.
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post #14 of 64 Old 01-20-2010, 07:30 PM
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Quote:
Originally Posted by comptiger5000 View Post
96+ 5.2s had the D44a rear. All 5.2s had 3.73 rear gears (except a rare few 93s with 3.55). All 93-95 had the D35 rear end. Most 96+ 4.0 had the D35, some tow packages got the D44a. 4.0 has 3.55 gearing, 3.73 with tow package.
100% right!

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post #15 of 64 Old 01-20-2010, 07:41 PM
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If you're going to get a 10+ year old Jeep, it's going to be a long-term investment anyway. So you might as well go all out and find yourself a 5.9. If I could go back in time... Be patient, and one will crop up. It'll be worth it. I finally saw one in person recently, and I was salivating. My 4.0's never looked as good since. LOL The 5.9 is refinement and brute force, like a Mustang crossed with a Wrangler with the trim of a Cadillac.

Now I'm getting Niner envy again.


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