4 Cylinder Engines in CJ7

The Cherokee got these engines first, then the Wranglers got them. Afaik,
none of them made it into CJs. I have the 4 cylinder engine in my Wrangler,
and no speeding tickets so far. ;^)

Earle

"Jeffrey DeWitt" > wrote in message
m...
> Maybe I'm misremembering but I seem to recall they needed a new 4cyl
> engine and took the old six, removed two cylinders and redesigned the
> head for better flow. The then took the "new" 4cyl engine and added two
> cylinders to make the 4.0. For what it's worth both engines use the
> same replacement pistons.
>
> (Autozone says a Badger P830-20 for a .020 oversize piston for either
> engine).
>
> Jeff DeWitt
>
> Mike Romain wrote:
> > Umm, they didn't make the 4.0 when the CJ's were around. The 6 is a 4.2
> > from that era.
> >
> > The later CJ 4 banger is a GM product.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > Jeffrey DeWitt wrote:
> >
> >>I don't think so, as I recall that engine is basically the 4.0 with two
> >>cylinders missing.
> >>
> >>Jeff DeWitt
> >>
> >>Earle Horton wrote:
> >>
> >>>Afaik, the four cylinder is a GM offering, with the same bell housing
> >>>pattern as a small block Chevy or the 4.3 liter V6. The 5.7 liter fuel
> >>>injected small block is an ever better compromise. ;^)
> >>>
> >>>The I4 isn't so great for highway use, just because of the horrible
> >>>aerodynamics that you can't get away from with a vehicle shaped like a
> >>>shoebox, but off road you may have some advantage, and the axle ratio
should
> >>>be the sensible 4.11 that they mated with four cylinder engines.
> >>>
> >>>Longevity will depend on what the engine has been through in the past,
and
> >>>what you do once you get it. A compression test would be a good idea.
> >>>
> >>>Earle
> >>>
> >>>"John Norman" > wrote in message
> ...
> >>>
> >>>
> >>>>I was wondering how good the 4 cylinder engines are in these jeeps. Is
> >>>>it a good option for medium-core 4-wheeling on the cheap? I know the
> >>>>I6's are great (I used to have a Cherokee), but will the I4 be a good
> >>>>compromise with gas prices the way they are? Also how about the
> >>>>longevity factor. How many miles can one expect to get out of this
> >>>>engine?
> >>>>
> >>>>Thanks in Advance
> >>>>John
> >>>
> >>>
> >>>

I think you're right, Civilian Jeeps used the V8s and sixes, while
the DJ (delivery mail trucks) got the GM fours.
God Bless America, Bill O|||||||O
http://www.billhughes.com/

Earle Horton wrote:
>
> The Cherokee got these engines first, then the Wranglers got them. Afaik,
> none of them made it into CJs. I have the 4 cylinder engine in my Wrangler,
> and no speeding tickets so far. ;^)
>
> Earle

Highway speed limitation is all about the CJs stability, or lack thereof.
The four-banger will get you up to freeway speed just as well as the V6. The
4 is also highly reliable and very field serviceable and off-road is one of
the best. V6 only has an advantage if towing imo.
But anyway, the CJs were the best Jeeps ever made and either one is great.

Michael

"John Norman" > wrote in message
...
>I was wondering how good the 4 cylinder engines are in these jeeps. Is
> it a good option for medium-core 4-wheeling on the cheap? I know the
> I6's are great (I used to have a Cherokee), but will the I4 be a good
> compromise with gas prices the way they are? Also how about the
> longevity factor. How many miles can one expect to get out of this
> engine?
>
> Thanks in Advance
> John