Power loss from 35's? & pwr mods - Page 3 - JeepForum.com

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post #31 of 103 Old 08-28-2010, 02:46 PM
derekryan84
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Quote:
Originally Posted by RockyClymer View Post
You can run whatever tire size you want - the question of "right" is your judgment as to what is acceptable performance with the gear/tire size. 35s and a 4.10 may be right for you and not someone else. I run 35s with 4.88 and it performs just about as good a it did stock with 32s and 3.73 - and I am getting about 19 mpg with no offroading - drops considerable when off road.
if im not mistaken project conartist in fourwheeler mag is running 4.88 and the really liked how it performed on and of the road

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post #32 of 103 Old 08-28-2010, 02:54 PM
2thbob
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I just got mine back from the gear shop...running 35's and went from 4:10s to 5:13s. Shoulda done the 5:38s.
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post #33 of 103 Old 08-28-2010, 02:55 PM
derekryan84
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Originally Posted by 2thbob View Post
I just got mine back from the gear shop...running 35's and went from 4:10s to 5:13s. Shoulda done the 5:38s.
really? is yours and auto?
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post #34 of 103 Old 08-28-2010, 09:25 PM
2thbob
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Yes. Auto. Its decent enough, but for just stop and go around town stuff leaving it in second instead of drive works best. The reality of gearing though, is its what you you get at dead stop start, and rpm's down the highway. Everything inbetween is adjusting shift points.
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post #35 of 103 Old 08-30-2010, 10:17 AM
ChicagoGuy
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The shop is telling you intake/exhaust first because that gives them two passes at your wallet.

Regear. Using HP to overcoming wrong gear ratios is NEVER a good idea.

- Bill (formerly VetteDriver)
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post #36 of 103 Old 08-30-2010, 10:38 AM
LL247
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I just went from 32''s to 35''s on 3:37's with the auto. It's not fantastic, but I think it's livable with the Superchips programmer. If re-gearing was in the budget that would've been the first move (def will be the next though).

MY Jeep - 2008 JKU X - 2'' RC lift, 35's, sitting as I bought her...planning mods now.

HER Jeep - 2014 JKU Freedom Edition - Fancy 20's with 33's...finest mall crawler in all the land!
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post #37 of 103 Old 08-30-2010, 11:32 AM
NotURMailman
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If she ever lets me get my hands on her JK it'll be 35s and 5.13s.

Too bad the TJ D30 only goes down to 4.88s...

My RHD TJ - Savvy equipped... And loving it!

I drive on the right side, what's wrong with you?


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It's difficult to take you seriously. It's like you're an easily perturbed autistic teenager who's drunk typing the whole time.
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post #38 of 103 Old 08-30-2010, 04:31 PM
tomwbates
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4dr X JK auto with 2.5" TF and 35s - some power loss, but you know - i dont mind it...All depends on how you drive. By now, my computer has readjusted and it rarely downshifts to maintain 65 going up hills on the highway.

'09 JK Unlimited Red Rock
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post #39 of 103 Old 08-30-2010, 05:46 PM
2thbob
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NO. It doesnt depend on 'how you drive'. Youve got a foot...thats not the parts that are taking the additional wear and stress. The idea or feeling of power loss are your motor and trans trying to do their job after being kicked down into an ineffective part of the power band- before it has a chance to create torque. So you step down the gas to get the rpms up where there is some power, all the while the guts are slipping and WEARING. Its really like having everything working great, but youve got an invisible trailer youre hauling around. REGEAR.
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post #40 of 103 Old 08-31-2010, 12:40 PM
jonballi
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Turbo it. Forced induction always makes more power
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post #41 of 103 Old 08-31-2010, 01:17 PM
mclaggan123
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i run 35's and 5.13's and wish i would have gone with 5.38's. i didnt know crap about regearing so i did my research here and went with the massess. i wish i would have gone with the few and gone even bigger. go big or go home. if i ever regear another jeep im going as big as i safely can.

http://www.jeepforum.com/forum/groups/lj-owners/

2006 Rubicon unlimited, silver. 5.5" long arm lift. 35" BFG KM2's on 15" black steelies. skidrow steering skid and radiator skid . LOD rear bumper with tire carrier. Flowmaster 44 exhaust. .CB with tuffy Overhead storage . Offroad lights in bumpers front and rear plus 2 more on the winch hoop.
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post #42 of 103 Old 01-31-2011, 02:47 PM
Deasoninc
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So I just picked up an 11 Rubi 4dr and I am thinking on going to 35's . I will be driving it daily and 90% hyway/city driving. I picked up the manual trani , will the 4:10 suffice? Also I was told something about axle sag?? What is this? I was told that if I run 35's that the front Dana 44 will sag? If this is a common knowledge thing please excuse my ignorance. Brand new to the jeep world.
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post #43 of 103 Old 01-31-2011, 03:26 PM
plac
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Quote:
Originally Posted by Deasoninc View Post
So I just picked up an 11 Rubi 4dr and I am thinking on going to 35's . I will be driving it daily and 90% hyway/city driving. I picked up the manual trani , will the 4:10 suffice? Also I was told something about axle sag?? What is this? I was told that if I run 35's that the front Dana 44 will sag? If this is a common knowledge thing please excuse my ignorance. Brand new to the jeep world.
i wouldnt say its a common issue, but you are going to have some kind of axle sag/stress on any truck you swap from 32" to 35" tires. Probably nothing you would visually notice though..

2015 Subaru WRX
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post #44 of 103 Old 01-31-2011, 03:30 PM
DangFoo
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You live in Dallas, which is mostly flat - you may NOT need to re-gear. I have 35s and 3.73s and live in the hills, plus drive up to the Sierra Nevada range often. I simply turn off overdrive on the freeway.

If you don't plan on doing any towing, then live with it for a while before making your decision. I'm not going to argue with anybody here; it's about preference and driving style.
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post #45 of 103 Old 01-31-2011, 03:34 PM
plac
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Originally Posted by DangFoo View Post
You live in Dallas, which is mostly flat - you may NOT need to re-gear. I have 35s and 3.73s and live in the hills, plus drive up to the Sierra Nevada range often. I simply turn off overdrive on the freeway.

If you don't plan on doing any towing, then live with it for a while before making your decision. I'm not going to argue with anybody here; it's about preference and driving style.
I agree, but im in the minority. On my manual trans, I had 3.21, then 4.10, then 3.73. Ended up going back to 3.23 since i mostly drive freeway. (Only 32" tho.)

Something else to keep in mind is the second you change your gears, any hope of a warranty is gone on your axles.

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3.73 gears , 35" tires , JK Wrangler , power loss , stock gears , wrangler

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