Mishimoto designed a new radiator for the XJ, it has 90% more capacity than the stock XJ one.
Here is an article about the design;
https://www.mishimoto.com/engineering/2017/07/jeep-xj-cherokee-radiator-part-1/
My 1999 XJ is so modified that I can't ever seem to put a part in without modifying the new part, so I was skeptical that this would drop right in. It did drop in, I did have to re-route a Power Steering Cooler line, the Radiator pushed the line into the back of the headlight assembly. I call that dropping in!
I am not going to do a writeup on the install, installing a radiator in an XJ is pretty straight forward, actually probably easier than a lot of vehicles.
I purchased this on "pre-sale" so I paid much less than what they are selling them for now. But they got my money anyway since I bought their "Liquid Chill" Synthetic coolant. They do have a rewards program so if you are going to order a radiator, sign up for that, get your points then use your points toward the coolant.
One of the biggest problems with this radiator is that it looks so nice and is hidden away between fans and A/C condenser, like a lot of blinging parts it would be nice to be able to show it off.
Since it is January in Salt Lake, I won't be able to give any kind performance review for a few months, hopefully I will remember to update this thread then. My 4.0 has been stroked to a 4.6L and hasn't ever really run "hot" but the cooling system could use an upgrade, the electric fan would run fairly constantly in Moab.
I did have one weird issue that I have never had; When I filled it up I somehow trapped an air bubble in the lower radiator hose. When I started the motor the water pump did not move any water. After taking the system apart (and spilling a gallon of the really expensive synthetic coolant...) I decided that there must have been an air bubble in the low spot of the lower radiator hose. Next time I filled it up from the heater bypass next to the thermostat and it worked fine.
One other comment, (that I will send to Mishimoto since this is a new product) is the lower transmission oil line on the radiator hit part of the inner fender, since I have a manual transmission I do not have ATF going through the radiator so I just removed the line and it wasn't an issue. It is in a tight spot so I couldn't take a picture of it. So if you are using the oil line you may have to cut a bit of the inner fender to clear the lower oil line.
Here are some pictures, including my tiny funnel to fill through the heater bypass.
Nathan
1999 XJ with pretty much everything...
https://www.rme4x4.com/threads/nathan-and-tanjas-99-xj-build-up.83436/
Here is an article about the design;
https://www.mishimoto.com/engineering/2017/07/jeep-xj-cherokee-radiator-part-1/
My 1999 XJ is so modified that I can't ever seem to put a part in without modifying the new part, so I was skeptical that this would drop right in. It did drop in, I did have to re-route a Power Steering Cooler line, the Radiator pushed the line into the back of the headlight assembly. I call that dropping in!
I am not going to do a writeup on the install, installing a radiator in an XJ is pretty straight forward, actually probably easier than a lot of vehicles.
I purchased this on "pre-sale" so I paid much less than what they are selling them for now. But they got my money anyway since I bought their "Liquid Chill" Synthetic coolant. They do have a rewards program so if you are going to order a radiator, sign up for that, get your points then use your points toward the coolant.
One of the biggest problems with this radiator is that it looks so nice and is hidden away between fans and A/C condenser, like a lot of blinging parts it would be nice to be able to show it off.
Since it is January in Salt Lake, I won't be able to give any kind performance review for a few months, hopefully I will remember to update this thread then. My 4.0 has been stroked to a 4.6L and hasn't ever really run "hot" but the cooling system could use an upgrade, the electric fan would run fairly constantly in Moab.
I did have one weird issue that I have never had; When I filled it up I somehow trapped an air bubble in the lower radiator hose. When I started the motor the water pump did not move any water. After taking the system apart (and spilling a gallon of the really expensive synthetic coolant...) I decided that there must have been an air bubble in the low spot of the lower radiator hose. Next time I filled it up from the heater bypass next to the thermostat and it worked fine.
One other comment, (that I will send to Mishimoto since this is a new product) is the lower transmission oil line on the radiator hit part of the inner fender, since I have a manual transmission I do not have ATF going through the radiator so I just removed the line and it wasn't an issue. It is in a tight spot so I couldn't take a picture of it. So if you are using the oil line you may have to cut a bit of the inner fender to clear the lower oil line.
Here are some pictures, including my tiny funnel to fill through the heater bypass.
Nathan
1999 XJ with pretty much everything...
https://www.rme4x4.com/threads/nathan-and-tanjas-99-xj-build-up.83436/
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