Calgary Jeep Association

4x4 Related Groups => Tech Talk => Topic started by: dunl on April 19, 2009, 12:46:20 AM

Title: 4.0l engines...longevity?
Post by: dunl on April 19, 2009, 12:46:20 AM
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?
Title: Re: 4.0l engines...longevity?
Post by: fug on April 19, 2009, 10:00:03 AM
My daily driver has 350K on it.  Other than the cracked exhaust manifold... it runs great.
Title: Re: 4.0l engines...longevity?
Post by: jandh on April 19, 2009, 10:06:18 AM
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
Title: Re: 4.0l engines...longevity?
Post by: w squared on April 19, 2009, 10:08:42 AM
Tell me again why they got rid of the 4.0 for the 3.8 in the JK's  :(
Title: Re: 4.0l engines...longevity?
Post by: WagoneerXJ on April 19, 2009, 12:19:12 PM
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!
Title: Re: 4.0l engines...longevity?
Post by: dunl on April 19, 2009, 02:40:28 PM
398,637km when we bought it....and this thing goes like snot! I couldn't believe it....
Title: Re: 4.0l engines...longevity?
Post by: ogilviexj on April 19, 2009, 03:06:58 PM
Mines at 372 and still pulling!
Title: Re: 4.0l engines...longevity?
Post by: WagoneerXJ on April 19, 2009, 03:44:32 PM
I've had 2 XJ's with over 300,000kms on them. Parted out one with 316,000 and another with 394,000kms
Title: Re: 4.0l engines...longevity?
Post by: Mudhawg on April 19, 2009, 03:47:22 PM
my XJ is just under 325 and runs like a top
Title: Re: 4.0l engines...longevity?
Post by: ogilviexj on April 19, 2009, 03:52:12 PM
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.  8) 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!

Title: Re: 4.0l engines...longevity?
Post by: JackstandJohnny on April 19, 2009, 06:14:04 PM
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!
Title: Re: 4.0l engines...longevity?
Post by: wrenchead99 on April 19, 2009, 06:58:20 PM
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
Title: Re: 4.0l engines...longevity?
Post by: Dragonmaster on April 19, 2009, 07:16:26 PM
Seen many with over 450,000 km on them and still running perfect. 
Title: Re: 4.0l engines...longevity?
Post by: dunl on April 19, 2009, 07:17:27 PM
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.
Title: Re: 4.0l engines...longevity?
Post by: i_go_commando on April 19, 2009, 07:59:58 PM
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!!!
Title: Re: 4.0l engines...longevity?
Post by: Immortal on April 19, 2009, 10:41:34 PM
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, my black XJ has 398,000 on the ticker... but it actually over 400,000.... big tires throws out the mileage a wee bit.

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

Really? holy $hit!! I guess that is why they are considered BULLETPROOF.