[My1989Jeep]

I have a chance of getting a radiator for a 91 at a very good price, but will it fit my 89 XJ? Will I have to drill new holes? Has anybody done this before and is it worth it?

[BriansCJ]

Nope. The 89 is a closed system where the 91 is an open system.

You would have to change all of your hoses, HCV, get an overflow bottle, and get a rad cap.

Edit: I wil check if my rad has trans lines. If it does, You can have it if you pay for shipping. Anything from 87-90 will (should with trans cooler lines) fit.
I will be doing a write-up on it, when I am done the interior/bedline write up.

[twmart]

Originally Posted by My1989Jeep

I have a chance of getting a radiator for a 91 at a very good price, but will it fit my 89 XJ? Will I have to drill new holes? Has anybody done this before and is it worth it?

I have seen a few write ups on this and have seen 1 in person. I am looking into starting to collect the pieces needed to do this on my 89 and 90.
- Radiator
- Overflow bottle
- Heater by-pass
- Heater hoses
The one I saw he had to cut the radiator support to fit the radiator fill tube.

Here is one of the write ups..
JeepsUnlimited.com

[My1989Jeep]

The upgrade would be sweet. Gonna go to the junk yards to see how all the parts go on a 91 verses an 89.

[My1989Jeep]

BriansCJ I sent you a PM

[Willy36]

Like said, it will work, just with modification. I recommend it. The closed system is good when it works, but it will give you problems eventually....They always do.

[Mkonyn]

There's a writeup here