View Full Version : HO or no HO?

07-19-2005, 07:31 PM
I have been looking for a '91-'95 XJ for almost 2 months around here, and have only found a handful which are automatics. I really want a 5 speed, so have been holding out. Today, I saw a '90 4.0L (I'm assuming non HO) 5 speed for $2500, but has almost 300,000km. How much better is the newer cooling system, how much money to convert from old to new? Also, is the non HO 4.0L all that bad? I've heard 15 horsepower, so not a big deal, but I'm concerned about the non-HO EFI which is AMC vs Chrysler. How many of you have worked on the TBI vs MPI? Being an auto mechanic, I have dealt with Chrysler EFI, but no AMC stuff, so being a little cautious about it. Also, were the 5 speeds different from 90-91, and which ones are better?

Unless someone has a '91 or newer 5 speed they want to sell me, I might have to buy an older one!

07-19-2005, 07:41 PM
HO's are always good[49][1c]

Daily Driver: '83 RX-7
Old rig: '89 4Runner 'The Last Ride (http://www.funinbc.com/forum/topic.asp?TOPIC_ID=14144)'
TeaBag: '80 Toy "4Runner" on 36" SXs with dual t-cases [8D]

07-20-2005, 06:40 AM

Life is like a roll of toilet paper.
The closer it gets to the end, the faster it goes.

07-21-2005, 05:02 PM
whats that you wanna buy my 88 cherokee?

Lift it, fat chicks cant jump

07-22-2005, 04:32 PM
Send tazjeep a pm on the cooling system he has recently converted his 87 to the new system and since then he no longer overheats. I run a 98 xj auto with command trac it never causes me any problems + i can wheel with a beer in one hand[15][15][15]


Taz Jeep
07-23-2005, 01:26 PM
Converting to the new system is easy, I recently fitted a rad from a 2000 XJ into mine, it bolts straight in.
As well as the rad you will need the overflow bottle, the heater hoses and if you've got an electric fan you'll need the thermostat housing as the sensor to trigger the fan is relocated there on the newer system. Took me about an hour to do the job and cost $100 cash :D
Before this conversion I would overheat when ever I went off road, now half the time I don't even need the electric fan, I've wired in a bypass switch so if I want to I can leave the fan on full time when rock crawling or just leave it off when not needed.


07-23-2005, 07:30 PM
I did some research on the cooling system update, looks like a peace of cake! Took a look at the '90, too much rust for me. I don't mind doing mechanical, but not bodywork! The torque specs actually look better on the non HO, a lot lower rpm compared to an HO at just about the same lb/ft.

Joshjohnbaun, I'm looking for a rust free XJ, otherwise I'd be tempted!

Rebulon Refurbulater
07-30-2005, 03:46 PM

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