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Old 07-07-2010, 06:35 PM   #9 (permalink)
comptiger5000
Master EcoModder
 
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Join Date: Feb 2010
Location: CT, USA
Posts: 544

RaceJeep - '98 Jeep Grand Cherokee (ZJ) 5.9 Limited
90 day: 13.62 mpg (US)
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Unfortunately, this is one mod I could never try safely with my Jeep. It would get way too hot with the 360 under the hood. They had to change the grille design and add heat extractor vents just to keep it cool with the bigger engine.

In the 102* weather yesterday, it was running about 205* on the highway at 60mph, and just under 210* around town (e-fan on low due to A/C system pressure). It hit 210* a couple times driving up hills in town. I wouldn't want to reduce airflow in this thing, at least not in the summer.
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Call me crazy, but I actually try for mpg with this Jeep:



Typical driving: Back in Rochester for school, driving is 60 - 70% city
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