2003 Jeep Grand Cherokee Overland Build

[OTH Overland]

Well, believe it or not I drove the WJ home last week. The tune still needs a little work, and in 105+ ambient temps it would run 210-220 in traffic which is totally safe (and what almost all modern Hemis run stock anyway) but I got a little pinging once it was 210+. A few other odds and ends, but I might be using this thing this fall...

-TJ

Glad to see you have finally had some good luck it really an awesome build, We really miss our WJ wish we did not sell it, but too many vehicles and something had to go lol.

 

[JimBill]

Well, believe it or not I drove the WJ home last week. The tune still needs a little work, and in 105+ ambient temps it would run 210-220 in traffic ......
-TJ

Nice! It's been a long project for you. Feel good to be out in the "wild" with it?
My WJ is in the garage with a battery tender hooked up. Needed to clean up the garage and last weekend finally did the front caliper and rotor R&R to clear the boxes off the workbench, since they have been in my way for over 5 months now. lol.
Sold the Tahoe and now have a 2021 RAM 1500 with the crazy E-Torque Hemi (don't judge me, the price was right). I can get it to ping on 89 octane on 90+ degree days, forget 87 octane in the summer!. FYI it ran 228 degrees water temp up on Sanora pass and Leavitt Lake trail, so your temps are in line with factory. But I bet you are far more demanding than the factory engineers and will get it sorted.
Cheers

 

[tjZ06]

Glad to see you have finally had some good luck it really an awesome build, We really miss our WJ wish we did not sell it, but too many vehicles and something had to go lol.

Thanks! Too many vehicles here too, but I'm far to deep in the WJ to ever get rid of it, lol.

Nice! It's been a long project for you. Feel good to be out in the "wild" with it?
My WJ is in the garage with a battery tender hooked up. Needed to clean up the garage and last weekend finally did the front caliper and rotor R&R to clear the boxes off the workbench, since they have been in my way for over 5 months now. lol.
Sold the Tahoe and now have a 2021 RAM 1500 with the crazy E-Torque Hemi (don't judge me, the price was right). I can get it to ping on 89 octane on 90+ degree days, forget 87 octane in the summer!. FYI it ran 228 degrees water temp up on Sanora pass and Leavitt Lake trail, so your temps are in line with factory. But I bet you are far more demanding than the factory engineers and will get it sorted.
Cheers

Yeah, I've had 6 factory GenIII Hemi vehicles (3 x WK2 Grands, 3 x RAMs) all tended to just run at 210-220 anyway. The Trackhawk and TRX would run cooler (lower fan actuation) in the Track modes... but otherwise that's just how they all run. I don't have a problem with 210-220, I just need to pull some timing in the tune so it doesn't ping on 91 in 100+ ambient and 210+ ECT. I also have a 2.0T 2 door JL and it runs anywhere from high 190s to low 220s (the fans don't even come on full until about 225).

Like you said, the temps are technically fine, it's more down to the tune to make it happy with those temps. I'd rather keep it cooler, but with that big engine stuffed in a little WJ engine bay (and WJ-sized rad) there's only so much I can expect in 100+ temps.



BTW, it's wild how different 35"s look on a WJ vs. a 2 door JL:
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