Jeep TJ Forum Third generation of the classic Jeep - manufactured since 1997. Known by the coil springs and round headlights. Includes the Rubicon and Unlimited editions as well

Gear ratios and fuel

Old Apr 19, 2009 | 08:17 PM
  #1  
Jeepminded's Avatar
Thread Starter
Senior Member
 
Joined: Apr 2009
Posts: 297
From: Southern Ontario
Default Gear ratios and fuel

New to the forum, adictive, just like all things Jeep.

Thinking of a compromise...TJ, even a 4 banger for daily commute, which is 65Kms each way along the 401 in Southern Ont...stop and go to say the least.

Any thoughts on the rear end ratio to help fuel consumption, maybe keep the tire size "mild' too?

Thanks
Old Apr 19, 2009 | 10:51 PM
  #2  
mac71's Avatar
Member
 
Joined: Aug 2008
Posts: 30
From: Owen Sound
Default Re: Gear ratios and fuel

I think I'd go with the 4.0L I6 for highway driving, get a 5 speed manual for that tall O/D. Alot of the 6 cylinder models came with a 3.07:1 axle ratio. Keep it well tuned and keep the tire size as close to stock as possible for the best gas mileage.
Happy Jeepin'
Old Apr 19, 2009 | 11:17 PM
  #3  
purodude's Avatar
Junior Member
 
Joined: Feb 2009
Posts: 8
From: canada
Default Re: Gear ratios and fuel

I agree. the 4 banger and the 4L get about the same gas mileage believe it or not. I've owned both with 4"lifts, 33-12.50s and 4:11 gears and they got the same gas mileage the only difference is you can use 5th gear in the 4L.
Old Apr 20, 2009 | 12:01 PM
  #4  
kevin77's Avatar
Member
 
Joined: Mar 2009
Posts: 89
From: toronto
Default Re: Gear ratios and fuel

ya the 4 banger ends up working way harder so it ends up buring alot of fuel in the end .
Old Apr 20, 2009 | 06:01 PM
  #5  
Mr White's Avatar
Administrator
iTrader: (1)
 
Joined: Feb 2008
Posts: 1,601
From: Quebec
Default Re: Gear ratios and fuel

I wud still look towards a 4.11 gearing even if its on a d30 & 35, even better wud be a d44. As later on you may just want to do some serious offroading and then have to change ur axles(or regear) as I am looking into now, sucks the 3.07's for offroading with 33's and the d30/35's are not actually strong enuff to go put a locker in. But if ur not interested in playing in the mud then stick with the 3.07's
Old Apr 21, 2009 | 08:23 AM
  #6  
Jeepminded's Avatar
Thread Starter
Senior Member
 
Joined: Apr 2009
Posts: 297
From: Southern Ontario
Default Re: Gear ratios and fuel

Great info, thanks, helps narrow the search!

Assume the I6 and a manual trans as the 'default' choice, anyone know of a site or link that would help know the various options...meaning 5 or 6 speed, Dana 30/35/50, gearing...what was offered over the build life of the TJ. (in light of not having a sales brochure for each model year)

Allways good to know more about the vehical then the sales staff.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Pablo
Jeep JK Forum
5
May 24, 2015 09:04 PM
Joe_M
Jeep Mailing List
36
Jul 11, 2007 11:33 PM
Jeff Scherb
Jeep Mailing List
6
Mar 29, 2005 05:12 PM
zarro
Jeep Mailing List
15
Mar 11, 2005 03:15 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread

All times are GMT -4. The time now is 11:45 PM.

Page generated in 0.09595 seconds with 16 queries