The older 4.0 used the Rennix MPI and had a different
head/mainfold/exhaust where the '95 used the so-called High Output
4.0. Several hp difference due to the head/manifold/exhaust changes,
not to mention the better MPI setup. If the old engine is tight, he
would be best off if he had the 95 head re-worked and swapped it onto
the older block but I would bet that the older engine has at least as
many miles on it as the 95 has so I wouldn't hope for miracles no
matter how he goes about it. A short block or full rebuild would
probably be a better route unless he just needs to keep the wheels
turning for a little while longer.

On Sat, 26 Jul 2003 13:08:47 UTC "Snow" <snowball_2004@msn.com> wrote:

> Asking for a co-worker,
>
> A co-worker of mine has a 95 XJ with a 4.0 (I don't know the mileage off
> hand but it has to be close to 280,000 km's), anyways currently it is
> burning lots of oil and needs a rebuild bad, he was wondering about swapping
> the engine out with a 4.0 from an 89 or 90 Comanche truck (he knows someone
> who is junking one) Would he get away with just doing a straight forward
> swap or would he need to pull a few other parts as well?? and what would
> those parts be??
>
> Thankies
>
> Snow...
>
>


--
Will Honea <whonea@codenet.net>