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Old 04-22-2010, 06:38 PM   #1
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Default 4.0 High Output

OK...probably a dumb question....I have a 97 Sport. How do you know if I have the High Output engine? Or is there a difference?
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Old 04-22-2010, 07:57 PM   #2
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You have the HO engine. They were used from 91' and up. The Renix engine has 177 HP and the HO has 190 HP. I'm pretty sure they just stopped putting the "High Output" badge on the XJs after 97.
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Old 04-22-2010, 08:48 PM   #3
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that is correct.
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Old 04-23-2010, 05:02 PM   #4
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I thought so but thanks for stating it for me
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Old 04-23-2010, 05:09 PM   #5
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Renix all the way.
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Old 04-24-2010, 12:12 AM   #6
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96 and after chrysler updated the 4.0 a little. they moved the intake ports up in the head a little bit to improve flow. i also think they changed the cam which lowered the torque peak to 3.000 rpm instead of 4.000 rpm, giving the 4.0 some mid range grunt. i also think the injectors were upsized as well .sorry probably more info than you wanted
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Old 04-24-2010, 12:16 AM   #7
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Quote:
Originally Posted by RENIXBEAST View Post
Renix all the way.
The one thing the French almost got right.
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Old 04-24-2010, 09:42 AM   #8
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  • 1984-1985 2.5L (150 CID) I4 carbureted - 105 hp (78 kW) @ 5000 rpm, 132 lbft (179 Nm) torque @ 2800 rpm
  • 1986-1990 2.5L (150 CID) I4 TBI (fuel injected) - 117 hp (87 kW) @ 5000 rpm, 135 lbft (183 Nm) @ 3500 rpm updated in 87-90 to 121 hp (90 kW)
  • 1991-2000 2.5L (150 CID) I4 MPI (multi-port injection) - 130 hp (97 kW) @ 5250 rpm, 139 lbft (188 Nm) @ 3250 rpm
  • 1984-1986 GM 2.8L V6 - 115 hp (86 kW) @ 4800 rpm, 145 lbft (197 Nm) @ 2400 rpm
  • 1985-1987 Renault 2.1L 4cyl. Turbo Diesel - 85 hp (63 kW) @ 3750 rpm, 132 lbft (179 Nm) @ 2750 rpm
  • 1987-1990 4.0L (242 CID) I6 RENIX FI 242ci - 173 hp (129 kW) @ 4750 rpm, 215 lbft (292 Nm) @ 4000 rpm
  • 1991-1995 4.0L (242 CID) I6 MPI (High Output) - 190 hp (142 kW) @ 4750 rpm, 220 lbft (300 Nm) @ 4,000 rpm
  • 1996-1999 4.0L (242 CID) I6 MPI (High Output) **Chrysler Block Cast** - 190 hp (142 kW) @ 4750 rpm, 235 lbft (319 Nm) @ 3,000 rpm
  • 2000-2001 4.0L (242 CID) I6 MPI "Power Tech" - 193 hp (144 kW) @ 4000 rpm, 243 lbft (329 Nm) @ 4,000 rpm
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