im just curious to know what’s been the highest mileage you guys have seen on your 4.0 litre engines? My 05 LJ currently sits at 350,000km on the original engine and Im wondering how much longer I have tbh. It’s still running strong it seems but Im looking to have the engine replaced eventually.
4.0 engine lifespan
- Thread starter Noname
- Start date
Just over 280K mi on the 06.
Approximately 300K mi on the 92.
Both still run fine. The 92 has had the timing set replaced.
Approximately 300K mi on the 92.
Both still run fine. The 92 has had the timing set replaced.
In freedom units that's around 217,000 miles. Just for context for most TJ owners.
Head Lice
TJ Addict
1 kilometer = 0.62137 miles
350,000 km = 217,480 miles
Did somebody say freedom ?
Here's a baby freedom seed
Back on topic:
I'm at 246k on my Lj,sees tons of rev. limiter with many more hoodrat activities to follow that and she lives happily to see many more days
I also take great care of my Lj but even then there's jeeps out there thar aren't on a religious schedule for oil changes etc. And they go over 300k But they also aren't driven like race cars lol so I wouldn't know how much these 4.0s last unless I know how one drives !If I'm easy on the nitrous I should see 300k miles on my 4.0
Did somebody say freedom ?
Here's a baby freedom seed
View attachment 610442
Back on topic:
I'm at 246k on my Lj,sees tons of rev. limiter with many more hoodrat activities to follow that and she lives happily to see many more days
That seed needs to grow larger before using it.
Last edited:
Yeah I've been watering it for the past year....still no progress
Its Still a baby.....
Babies...try loading 5" display mortars.
-Mac
-Mac
JEEPSTEVENANAIMO
TJ Enthusiast
A guy on this forum had 600k on his 4.0 before getting rid of it. Said all it ever needed was basic maintenance and a transmission rebuild every 200k miles.
I'm not even close to that...but when I was younger I had a Chevy Nova with the 251 straight 6 with over 400k before rust ate up the vehicle. Straight sixes go a long time even if you are not timely with maintenance, very forgiving.
Hasselblad
TJ Enthusiast
I only have approximately http://bananaforscale.info/#!/convert/length/80000/miles/bananas on my 2006. I figure I've got a few more banana length in her!
My other car’s a BMW E46 and someone on the E46 forums is getting grief because he’s thinking of abandoning his after 820,000 miles. The other forumites want him to get it to 1,000,000…
akajibio
TJ Enthusiast
Did somebody say freedom ?
Here's a baby freedom seed
View attachment 610442
Back on topic:
I'm at 246k on my Lj,sees tons of rev. limiter with many more hoodrat activities to follow that and she lives happily to see many more days
If I'm easy on the nitrous I should see 300k miles on my 4.0
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