4.0l engines...longevity?

[dunl]

Uhm.....how long do these suckers last for? Bought a Comanche today and the thing just purrs....how many kilometres do you get outta these engines?

[fug]

My daily driver has 350K on it.  Other than the cracked exhaust manifold... it runs great.

[jandh]

I have 231xxx on mine and it purrs too - a buddy of mine just sold his with 358xxx and it ran just as good as mine

[w squared]

Tell me again why they got rid of the 4.0 for the 3.8 in the JK's 

[WagoneerXJ]

Tell me again why they got rid of the 4.0 for the 3.8 in the JK's 

No kidding! If someone put a 4.0 in a JK...I'd buy it!

[dunl]

398,637km when we bought it....and this thing goes like snot! I couldn't believe it....

[ogilviexj]

Mines at 372 and still pulling!

[WagoneerXJ]

I've had 2 XJ's with over 300,000kms on them. Parted out one with 316,000 and another with 394,000kms

[Mudhawg]

my XJ is just under 325 and runs like a top

[ogilviexj]

Took it in for an oil change and fluids for spring, guy at the shop says he see's tons of these things with over 300k. I assume that if they hit the junk yards, its not the engines fault in most cases.  Makes me think about the arguments of imports like toyota that have 400+ km being so "reliable", jeeps get that and cost half as much to buy, maintain and fix!

[JackstandJohnny]

Uhm.....how long do these suckers last for? Bought a Comanche today and the thing just purrs....how many kilometres do you get outta these engines?

Darcy is the commanche the one that was on kijiji?  i saw ur email addy in a huge mass email the guy sent out (i think). i really wanted that jeep lol. good buy!

[wrenchead99]

I expect the life of the 4.0L to be around 750,000km or so.  At least that's what the last one I had in the shop had on it.  It had low compression

[Dragonmaster]

Seen many with over 450,000 km on them and still running perfect. 

[dunl]

Darcy is the commanche the one that was on kijiji?  i saw ur email addy in a huge mass email the guy sent out (i think). i really wanted that jeep lol. good buy!

Yeah, it was, and Mick was really good to deal with.  Excellent guy.  That Chev he has, it has a 454 in it if anyone is looking for a big engine...

That manche is excellent....it's an Eliminator, 1990, 6 cyl of course, Toyo Open Country AT's in decent shape, nice interior with COMFY buckets, Pioneer stereo (needs speakers though)....and I think it is faster off the line than my wife's '03 Jetta TDI. If I lay onto it I usually shift into third roughly around 110km/hr.....

BTW, if anyone has seen this on Kijiji:

http://calgary.kijiji.ca/c-cars-vehicles-classic-cars-1952-Willys-Jeep-W0QQAdIdZ112073501

It was almost next door to this Comanche.  I passed it on the way by.....really rough looking.

[i_go_commando]

well theire a reason the old jeeps and toy keep going. its the striagth engines. the 58 willies has the original engine. i did points and plugs and oil, added new fule and a new batteriey, and it fired right up after i found the miising ground on the block. i like straight engines!! now if i could find a strqaight 8 or even 10!!!