1eliminator1 Posted February 20, 2012 Posted February 20, 2012 I am planning on putting a HO stroker in the mj, and I was just wondering what people who already have one are getting for gas mileage
JeepcoMJ Posted February 20, 2012 Posted February 20, 2012 mine is a .030 bore with 4.2 crank and rods, comp cam, borla header, 01 intake manifold, bored TB, neon srt4 injectors. I can get as low as 15 avg if i'm beating on it, or as high as 23 avg if I keep it in it's sweet spot around 1900rpm...seems to be my best fuel mileage with how it's built. I imagine it would be higher still if I grandpa-drove it. that's on a 97 xj 5 speed.
ejndssn Posted February 20, 2012 Posted February 20, 2012 well i used to get around 17cty 23hwy i have an AP kit installed with GC 5.9 injectors and comp cam was planning to go with an air raid TB spacer and k&n intake system but i'm in a holding pattern for now :fs1:
Exxon Valdez Jeep Posted February 24, 2012 Posted February 24, 2012 renix 4.7 in my xj with 37s and 5.13s 8 goofing off and hauling the mail. 15 usually on the highway and my best was 17 mpg driving to Moab. not too shabby I think since some guys have trouble getting that with much smaller tires and a 4.0 looking forward to modding this motor some more an swapping it in the MJ
Blue XJ Posted February 28, 2012 Posted February 28, 2012 I get about the same as I did before the swap. About 15 city and 17 highway, but I am not light in the pedal at all. This is with a 4.7, 35's and 4.56 gears.
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