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Old 09-05-2012, 10:53 AM   #1
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New engine in old jeep or newer jeep?

I've got a 98 wrangler 4.0l 335k miles. I've got $4k. Should I replace the engine, clean up the manual tranz and get new seats, or get my parents to match my 4k and I get a newer keep for $8k? A new engine would last longer. That's my thought behind just putting a new engine in it.

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Old 09-05-2012, 10:55 AM   #2
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Two words: Baby Diesel...

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Old 09-05-2012, 11:14 AM   #3
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Anything wrong with the current engine except the milage?
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Old 09-05-2012, 11:47 AM   #4
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I've just got that feeling its going to go at any time with all of the knocking and rattling and the sound that reminds me of a diesel.
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Old 09-05-2012, 12:03 PM   #5
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New engine. Why buy somebody else's problem?
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Old 09-05-2012, 12:04 PM   #6
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Quote:
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New engine. Why buy somebody else's problem?
That's what I was thinking!
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Old 09-05-2012, 12:23 PM   #7
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That's what I was thinking!
I'm leery of used Jeeps, especially if they're on a dealer's lot. Could have all sorts of hidden grenades inside it, waiting to go boom.

At least if it's another Jeep owner, you can talk Jeeper-to-Jeeper and hope they'll give you an honest thumbnail of how they used it.

Just my take on it.

Plus, I get used to the little quirks in my own stuff. I'd rather be aware of problems with my current Jeep than buy a new one and find out about an issue on a trail in the North Woods, in January, when it's snowing sideways and flirting with subzero temps, and I'm wearing flip-flops cuz I just went out to buy milk.

Because that's how it'll happen.
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Old 09-05-2012, 01:33 PM   #8
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New engine all the way,I just put a new engine in my 02 sport , and if your lucky like i was, you can do a lot of the work yourself.
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Old 09-05-2012, 02:28 PM   #9
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I probably wouldn't be able to do much since I don't have an engine lift. Hah
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Old 09-05-2012, 04:16 PM   #10
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If the engine is the only thing wrong I'd keep it. But if it needs a lot of other things done as well it might be financially smarter to buy something else.
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Old 09-05-2012, 04:29 PM   #11
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OK, if it sounds tired and the rest is sound, then new engine. Plain 4.0 replacement is headache free.
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Old 09-05-2012, 04:43 PM   #12
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with your 4k you can easily get a cheap lift and then sell it afterwards. If you can turn a wrench you can replace an engine.
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Old 09-05-2012, 04:44 PM   #13
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98 jeep wrangler knock - YouTube

thats what it sounds like
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Old 09-05-2012, 06:22 PM   #14
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with your 4k you can easily get a cheap lift and then sell it afterwards. If you can turn a wrench you can replace an engine.
Ive turned quite a few wrenches in my short life. the hardest thing ive ever done with a car is changing out the heater core in my dodge ram 1500. so much work.
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Old 09-05-2012, 06:58 PM   #15
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oh man. if you can can change a heater core you can swap an engine. pick up a harbor freight lift and go to town.
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Old 09-05-2012, 07:23 PM   #16
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Either something is starved for oil or a lifter is shot.
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Old 09-05-2012, 07:23 PM   #17
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Old 09-05-2012, 08:58 PM   #18
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thats actually a pretty good deal considering most 350 swaps might make those numbers and need a few thousand in mods to make it work.
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Old 09-05-2012, 10:37 PM   #19
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Damn, too bad the hurricane took out our money tree. Lol that's way too much. I don't do any off roading so I guess I don't need too much hp.
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Check out my 5.3 swap in progress here!
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Old 09-05-2012, 10:39 PM   #20
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Would finding a junk yard engine and rebuilding it be a better choice? Ive just been told that a rebuilt engine never runs quite like a new one.
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Old 09-06-2012, 08:14 AM   #21
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335K - check out the rest

At 335K you are getting to the point of needing to check out the rest of the vehicle. That includes the ball joints, steering joints, body mounts, etc. etc.

Not in any way to discourage, just best to know exactly what you are getting into. One thing, they don't go down in value.

Sounds like getting a 2ton Harbor Freight Lift and going to town is the way. With $4K you can really restore it.

My suggestion, coming from just doing a complete frame and tub replacement.

Buy a Harbor Freight 2T lift. You will use it for a LOT of things besides the engine.

Pull everything ahead of the firewall. Front fenders, radiator, etc.

Take 1,000s of pictures. Take an extensive video of every place you can think of, then take another one.

Pull the engine and tranny out. Check tranny to see if it needs synchros, etc. May be time for a short renew of the innards.

Now start on the running gear. Check out the ball joints. If you are handy you can renew them. Pull the front axles and replace the U-joints and seals. Do the brakes as necessary. Pull the drive shafts and replace the U-joints with Spicers. Prime and paint as you go. Replace all of the tie rod ends, etc. I did a RC 4" lift kit with 2.5" springs while at it and glad I did.

Once you have the running gear up to snuff you can do the exhaust and replace the engine. Then put the rest back together and you have virtually a new vehicle. Total cost, excluding engine & tranny, will be about $1,500. That is new exhaust and everything.
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Old 09-06-2012, 10:18 AM   #22
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So what happens if I wreck after I do all of this? Insurance won't recognize all the new part will they?
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Old 09-06-2012, 10:31 AM   #23
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So what happens if I wreck after I do all of this? Insurance won't recognize all the new part will they?
No, but you can buy it back from them for a few hundred bucks if it gets totaled.

Also, you can't live life worrying about what-ifs.
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Old 09-06-2012, 12:37 PM   #24
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So what happens if I wreck after I do all of this? Insurance won't recognize all the new part will they?
You could make a case. Keep all the receipts. Talk to them after the change, they might put it on record.
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Old 09-06-2012, 12:39 PM   #25
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if a rebuilt engine doesnt run as well or better than a new one it was built wrong.
I'm with flashole, no sense in worrying about everything. if you wreck it your restored jeep its worth as much as it was before the restoration. maintenance doesnt add value to a vehicle.
for a little over a grand you can have your engine and transmission overhauled.
then spend the rest on running gear and new seats or whatever interior items you need.
Unless you have rust issues you will have a like new TJ when you are done. If you arent willing to go all in on your jeep trade it in and drop your 4k on another vehicle. If your parents are doing a price match you can likely get a a decent used car with a payment under 300 dollars a month.
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Old 09-06-2012, 01:06 PM   #26
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so, all in all, an engine rebuild is a hell of a lot better decision economically than just going buy a new one? Im not really going to worry about everything else, as this jeep has had a good number of things replaced over the years and most things in the engine bay aren't the original from the factory.

I really like the jeep, and i just want to make it last a long time.

so now i guess i have to outweigh rebuilding the engine myself and taking up all that time dissembling, assembling, getting it machined. or simply getting a replacement and dropping it in, which would be more money, but a lot less time and work.
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Old 09-06-2012, 01:28 PM   #27
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so, all in all, an engine rebuild is a hell of a lot better decision economically than just going buy a new one? Im not really going to worry about everything else, as this jeep has had a good number of things replaced over the years and most things in the engine bay aren't the original from the factory.

I really like the jeep, and i just want to make it last a long time.

so now i guess i have to outweigh rebuilding the engine myself and taking up all that time dissembling, assembling, getting it machined. or simply getting a replacement and dropping it in, which would be more money, but a lot less time and work.
If you are not an experienced mechanic just do the swap. That is enough work in itself. I recently swapped my tranny & rear end... what a job! Let us know what you decide and how it goes. My YJ has 185K on it so hopefully I will not be swapping engines any time soon, but you never know
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Old 09-06-2012, 02:06 PM   #28
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take your engine out and drop it at a shop. they will do all the work and you put it back in the jeep when you are done.
another alternative is a lower mile used engine. lots of wrecked cherokees out there with a 4.0. you can probably grab one for under 500.
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Old 09-06-2012, 02:24 PM   #29
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replace the engine. and with 4k oh the options!! either just replace it with another 4.0 or put a V8. The coolest swap would be a diesel but those do get pretty expensive. as for a lift, you can get one from Harbor Freight for less than $100 i believe.
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Old 09-06-2012, 11:11 PM   #30
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Il be sure to keep y'all updated when i start my build and when i decide on what to do!

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