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Old 09-15-2009, 10:28 PM   #1
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4-cylinder YJ's.... are they worth it?

I have a 4-cylinder YJ manual... is it worth working on with the suspension and the tires? I feel like my v4 might not be able to pull the 2-3in lift and the 32in tires that I plan on getting. Any personal experiences? Right now believe it or not I get around 18-20 mpg with regular driving with my 95 YJ. How much would a 2-3in lift and 30in tires effect mpg?



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Old 09-15-2009, 10:33 PM   #2
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30" tires aren't gonna throw your mpg off all that much. the 4 cyl motor is a work horse, and is just as reliable and long lasting as the 4.0, but it is a dog. it does all you want off road, but on the hiway it is disappointing. normally i tell people if they really want the 6 they should sell the 4 cyl jeep and buy a 6 cyl jeep. it is easier and cheaper than swapping.

but i saw what you paid for that jeep, i say leave the engine alone, do the small lift and 31's and see how you like it.

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Old 09-16-2009, 12:59 AM   #3
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sell and get a 6cyl.
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Old 09-16-2009, 01:03 AM   #4
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I think you mean it has a Inline six and not a V6 unless it's a replaced engine?
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Old 09-16-2009, 01:11 AM   #5
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I think you mean it has a Inline six and not a V6 unless it's a replaced engine?
he actully said v4 not v6
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Old 09-16-2009, 01:15 AM   #6
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he actully said v4 not v6
Sorry meant V4
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Old 09-16-2009, 08:23 AM   #7
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My '91 4-banger has about 3" of overall lift (2 1/2 suspension and 1" body) and I have 31" mudders on it. I get about 15-16 mpg and it does fine on the highway and go 75 mph no problem. I used to have 32" mudders and it made a big difference on power. I am a firm believer in the 4-banger as long as you don't get too "big" with it.
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Old 09-16-2009, 08:27 AM   #8
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Even if you went with 33s you can gain most of it back with a re-gear.
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Old 09-16-2009, 08:38 AM   #9
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i'm not a fan of spending money on a d35, and in a 4 cyl its already 4.10 gears, and jumping to 4.56 is not a big difference, and aftermarket makes a 4.88 gear that is the biggest that can be used, not gonna make it all come back. regearing is the best bang for the buck on a 4 cyl w/ bigger tires, but it also costs a lot of money, and is limited by going down 2 gear ratios and thats it.
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Old 09-16-2009, 09:43 AM   #10
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Even if you went with 33s you can gain most of it back with a re-gear.
I didn't say ALL

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