i have an 03 renegade 5-speed i'm thinking about putting 4.10's in. It currently has 245/75 tires with ome lift with top plate and spacers. I drive about 50 miles a day with 90% of that being interstate. i currently get 16mpg. if i run a full tank of 89 i can get 17mpg. Any idea what i would get after a re-gear?
benefits of re-gearing ?
- Thread starter Joe200man
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One of the guys with an 06 with a manual jumped on the average of 4 MPG. Said it was back to what it was when it was stock height and stock tires.
Mines an automatic but it jumped back up about 5 -6
Of course no guarantee that you'll get the same depending on driving style etc. :icon_lol:
Mines an automatic but it jumped back up about 5 -6
Of course no guarantee that you'll get the same depending on driving style etc. :icon_lol:
yellocoyote
Administrator
Also depends on if you have the 45RFE or the 42RLE... you'll notice more improvement with the latter.
CactusJacked
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Do the math and figure how long the payback might be for the cost of labor and parts for re-gearing based on the couple of few mpg's you might gain back. I presume the 50 miles a day is to and from work (250) plus weekends. For the sake of argument let's say a total of 300 miles a week. Gaining 3 mpg would save you 3 gallons a week x $3.85/gal = $11.55/week x 52 weeks = $600/year saved (or $200 for every 1 mpg gained). And that's if you gain 3 mpg's, but it's also likely you may not since your tires aren't all that over-sized. Whoops, looks like I figured most of it for you!!
Mine is manual as well, but I only put on a little over 100 miles a week. To me, I'm not going to own my liberty long enough to pay back for the cost of re-gearing, so I'm staying with the 3.73's with my 265's.
Mine is manual as well, but I only put on a little over 100 miles a week. To me, I'm not going to own my liberty long enough to pay back for the cost of re-gearing, so I'm staying with the 3.73's with my 265's.
As has been talked about before its not only the mileage that you gain but also the fact its easier on your motor and transmission/ clutch etc.
For me and lots of others we build a rig for the long run no matter how long we are going to keep it. In the end it pays. Could be why I never trade anything in, always have a waiting list when I'm ready to sell :gr_grin:
For me and lots of others we build a rig for the long run no matter how long we are going to keep it. In the end it pays. Could be why I never trade anything in, always have a waiting list when I'm ready to sell :gr_grin:
If the basic only was considered, what is the aprox cost to re gear in parts only, for front & rear?
Would the basic even be recommended without the extra packages like arb lockers, steel front diff etc Can u say mega $$ ! (and work)
Would the basic even be recommended without the extra packages like arb lockers, steel front diff etc Can u say mega $$ ! (and work)
tjkj2002
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Took less then a year to pay for my re-gearing,I gained 8mpg's highway and did a lot of highway driving that year.I even bought a brand new front D30A with 4.10's installed and still had it paid off in less then a year.Took another year to pay off the DTT and ARB I installed but that was for offroad.
Funny this is I paid less then $600 for the 2nd re-gearing to 5.13's and I didn't even do the work,and yes that was both axles but cheaper prices for gear sets since and more common diff(HP44 and HP60).
Funny this is I paid less then $600 for the 2nd re-gearing to 5.13's and I didn't even do the work,and yes that was both axles but cheaper prices for gear sets since and more common diff(HP44 and HP60).
to me the extra mpg is just a bonus. It's not bad driving through town but sometimes on the interstate i miss the extra acceleration. also is an 05 rear end different from an 03?? I found an 05 close by with 4.10's but from what i've seen the rear is different but the front is the same? Is this correct?
Could be done are you sure the 05 had 4.10s ?
Yea its from a 2.4L liberty. Are there any differences between the years?
CactusJacked
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And the difference between you guys and me is the terrain. I've road tripped my Liberty to Ohio 2 times in the past. While on what I would consider "mountain" roads, I had my gas pedal pretty much to the floor going uphill in 5th gear. If I had to travel those types of roads on a more regular basis, then yes I would seriously consider re-gearing. But I'm living here in the flatlands of IL. I can honestly say mine loafs along, even in 5th gear.
TwoBobsKJ
Full Access Member
Funny how terrain changes the perspective...
In my part of Ohio I would consider the terrain to be flat - but when I go to the Western part of the Ohio or the extreme NE corner THEN the terrain gets tabletop flat. And when I head to customers over in NW and Western PA the hills really kick in - and all of a sudden my 3.73-geared Libby was a dog. That's when I made up my mind to regear to 4.10's to get the pep back. Plus, when I tow my boat over there and have to drag it up and down the long-ish grades I'm not holding up traffic. As a matter of fact I can usually pass people on the I-80 with no problem.
I'm thankful I was able to get a set of 4.10s in mine :waytogo:
Bob
CactusJacked
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Before I took that trip, my gas pedal never went close to the floor out of necessity. I remember thinking, man I'm glad I don't have to travel these kind of roads all the time. I even had to downshift to 4th a couple of times for losing ground. Prior to taking the Liberty on the trip, I went in my Vette. That's a much more fun vehicle for doing the twisties and hill climbs.
tjkj2002
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Try living on the front range in Colorado,4.10's and 245/75's still feels like a dog.
