High output engine

R

Rod Knee

NAXJA Forum User

Location

Grand Jct., CO

• Feb 18, 2008

• #1

From what I've read all XJ's from "91 on were built with the high output 4.0L I6. I assumed that the 4.0's that went into Grand Cherokees from "91 on were also HO. But in looking at a 97 XJ on a used car lot, the salesman told me it was a non-HO.

So my question is: How do you know whether an XJ or Grand Cherokee has the HO engine? I'm thinking about getting a second jeep for a DD to keep the miles off the one I've built up for off road use.

 

J

JeffDeWitt

NAXJA Forum User

Location

Garner, NC

• Feb 18, 2008

• #2

I suspect the salesman didn't know what he was talking about.

 

Tim_MN

Freakish Hand Strength

NAXJA Member

Location

Minneapolis, MN

• Feb 18, 2008

• #3

Just ask the little old lady who used to own it and only drove it to Church on Sundays, which engine it has.





.
4.0L H.O.

 

9

96cherokee40

NAXJA Forum User

Location

Albuquerque, NM

• Feb 18, 2008

• #4

I can't remember the exact name, but that was the year they stopped calling it the H.O and started calling it Powertech I believe.

 

ehall

NAXJA Member

NAXJA Member

Location

Southern Maryland

• Feb 19, 2008

• #5

They started calling it Power Tech in 97 or thereabouts. There were some minor changes then too.

http://en.wikipedia.org/wiki/AMC_Straight_6_engine#4.0

 

Tim_MN

Freakish Hand Strength

NAXJA Member

Location

Minneapolis, MN

• Feb 19, 2008

• #6

4.0L I6 EFI Power Tech - 177 hp @ 4750 rpm, 220 ft lb @ 4000 rpm - used 1987-1990

4.0L I6 MPI Power Tech HO (High Output) - 190 hp @ 4750 rpm, 220 ft lb @ 4,000 rpm - used in 1991-1995 and updated for 1996-2001 to 225 ft lb torque @ 3000 rpm (00-01 models use a distributorless ignition system)