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Jeep Cherokee Forum (https://www.cherokeeforum.com/)
-   Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here (https://www.cherokeeforum.com/f2/)
-   -   H.O. vs Powertech (https://www.cherokeeforum.com/f2/h-o-vs-powertech-134811/)

GreyDog May 6, 2012 07:47 PM
Yeah man, this is just really throwing me off.

No where on my Jeep or on the build list does it say HO, but apparently it has to be. I was mistaken originally when I thought 'powertech' referred to the 00-01 engines and HO was 91-99.

I guess they are all powertech, and the newer ones are powertech HO.

N20jeep May 6, 2012 08:00 PM
Originally Posted by GreyDog
Yeah man, this is just really throwing me off.

No where on my Jeep or on the build list does it say HO, but apparently it has to be. I was mistaken originally when I thought 'powertech' referred to the 00-01 engines and HO was 91-99.

I guess they are all powertech, and the newer ones are powertech HO.
Do you have the coil pack?

If not then you do not have the 0331 head.

djb383 May 6, 2012 08:12 PM
Originally Posted by GreyDog (Post 1752047)
Build date, according to the door sticker, is April 99, so she just turned 13! Also not a late model 99 so yeah.

Head casting number... is that the stamped number just above the oil filler cap? If so, it is: 53020323.
I would think a 4/99 build date would be a late model '99. Mfg's usually start sending the dealerships the next/new model year in the last 1/4 of the current year. Thus '99 model production would have started give or take mid/late summer '98 so inventories could be built up and shipments sent to dealers later part of '98. My guess is production of '99 models ceased give or take early/mid summer '99 making a 4/99 build date a late '99 model.

Gorillaxj May 6, 2012 08:12 PM
Originally Posted by N20jeep (Post 1752255)
Do you have the coil pack?

If not then you do not have the 0331 head.
X2! I would just pop the hood, and check for the casting number on the head... or check for coil packs... or by the style of exhaust manifold, 2 piece upper manifold is the 0331

GreyDog May 6, 2012 08:33 PM
djb that's a great point.

The hood has been up all day lol but I just don't know where or what to look for. So, I'm guessing coil pack would be to the left of the engine, but what does one with the coil pack look like vs one without? I'll try and get pics asap.

The number stamped on the head is 53020323.

djb383 May 6, 2012 08:44 PM
1 Attachment(s)
No distributor or distributor-less for '00-'01. '99 down have the traditional distributor (cap, rotor and plug wires).

GreyDog May 6, 2012 09:09 PM
Is that a picture of your 98?

Bustedback May 6, 2012 09:58 PM
Your build date is May of 99, not April of 99.

GreyDog May 6, 2012 10:03 PM
lol ok how do you know?

djb383 May 6, 2012 10:14 PM
Originally Posted by GreyDog (Post 1752591)
Is that a picture of your 98?
Yes.

djb383 May 6, 2012 10:15 PM
Originally Posted by Bustedback (Post 1752786)
Your build date is May of 99, not April of 99.
GreyDog's or djb383's? LOL

GreyDog May 6, 2012 10:27 PM
Mine is the same as yours, no coil packs and just wires and plugs from cap to engine

cruiser54 May 6, 2012 10:43 PM
Originally Posted by allsierra123 (Post 1752074)
I must say it had me searching as well. Cause I thought my 88 was a powertech, But I didnt want to say anything until I confirmed that.
88 is a Renix. OP needs to get the cylinder head number from the driver's side of the head about midway down on top. 4 numbers. 0331 is the one that cracked. TUPY is good also.

mrfajita May 7, 2012 01:27 AM
They were all referred to as Powertech I6. 87-90 was Renix engine control system, 91-95 is OBD1 HO, 96-01 is OBD2 HO. Mid 99 they started the 0331 head and coil packs.

allsierra123 May 7, 2012 01:48 AM
Thats what I had read. I wasnt sure I was right though.


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