2012 0-60 Time Here - Page 3 - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 08-19-2011, 11:41 PM   #61
Jeeper
 
Join Date: Aug 2011
Posts: 97
I just picked up a '12 tonight with the 6 speed. I drove an 08 JKU for a year (was my family's car). I have absolutely nothing against the 3.8, however I genuinely believe that it is a 'low-tec' engine relative to what is available today. ~200+/- HP out of a relatively large 6 cylinder and dismal fuel mileage is simply not up to par of today's cars.

I'm not saying that the '11- cars are undrivable - they certainly do their job and have plenty of torque - but the car really comes to life with almost 300hp. It really scoots around - feels very fast. It feels almost identical to its competitors (although inferior competitors), the Xterra and FJ. I think with the new engine there will be ABSOLUTELY no comparison anymore.

No one buys a jeep because they want to go fast, but the last engine was really underpowered given its size and fuel efficiency.

Black2012 is offline   Quote Quick Reply
Old 08-19-2011, 11:57 PM   #62
Jeeper
 
jk wrangler fan's Avatar
 
Join Date: Feb 2011
Location: Chicago
Posts: 160
I remember mentioning a while ago that the 3.6 with intake and exhaust should run with a supercharged 3.8. Looks like the engine/trans combo is a winner. The only gripe about my Wrangler and Jeep has addressed it (along with better fuel economy).

__________________
2010 Silver Islander 2 door hardtop 6m
jk wrangler fan is offline   Quote Quick Reply
Old 08-20-2011, 03:47 AM   #63
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 34,978
Your points are invalid as soon as you call your jeep A CAR
__________________
2007 Rubicon/Rock Krawler triple rate 2.5" coils/RK rear TB w/ a teraflex raised bracket/Rancho 9000 31/32XL shocks/Synergy flipped draglink,ball joints,tie rod /Hankook MT 315-75-16 on Level 8 ZX's/Rancho geo brackets/Ruff stuff uppers/Fox ATS stabilizer/Adams front DS/Artec front armor w/ Currie upper bushings/Rancho cat back exhaust.

Lifting your JK? Read this!!



Click HERE to become a WranglerForum Supporting Member!
kjeeper10 is online now   Quote Quick Reply
Old 08-20-2011, 04:59 AM   #64
Jeeper
 
Join Date: Jun 2010
Posts: 322
Quote:
Originally Posted by NEO Jeep View Post
You sound jealous.
Some of us waited for a BETTER engine.
FIVE years for me.

BTW,
If your "work truck" runs 0-60 in under 8 seconds (a 454 SS,Lightning?),
I guess the pizza is still warm..
First point, not jealous.... So you can go pund sand with that comment. I think the new pentastar is an amazing powerplant, along with the new transmission, I KNOW the Durango moves well with this engine. I could trade mine in and get the same thing man, Jeeps hold their resale value. Or....I could save my depreciation and get a RIPP supercharger. both "would" be options if this were an important measurement to me. Regear my 2011 and get a bit better as well.

And your right about the time of my work truck (I am have been a bit optimistic i guess, "seat of the pants feel" cause it has a loud intake sound),measured my truck this morning, low to mid 9's. So a 2012 is a quite bit faster, maybe not after 60, but nonetheless faster. I have highway gearing in a 5K pound truck with a tall fisrt gear ratio of 2.46:1 that has 130K on the clock, so this Pentastar V6 is doing good in something shaped like a brick. So, have a great weekend! Hope you enjoy the new ride.
__________________
-Justin
TxF150 is offline   Quote Quick Reply
Old 08-20-2011, 05:01 AM   #65
Jeeper
 
Join Date: Jun 2010
Posts: 322
Quote:
Originally Posted by Black2012 View Post
I just picked up a '12 tonight with the 6 speed. I drove an 08 JKU for a year (was my family's car). I have absolutely nothing against the 3.8, however I genuinely believe that it is a 'low-tec' engine relative to what is available today. ~200+/- HP out of a relatively large 6 cylinder and dismal fuel mileage is simply not up to par of today's cars.

I'm not saying that the '11- cars are undrivable - they certainly do their job and have plenty of torque - but the car really comes to life with almost 300hp. It really scoots around - feels very fast. It feels almost identical to its competitors (although inferior competitors), the Xterra and FJ. I think with the new engine there will be ABSOLUTELY no comparison anymore.

No one buys a jeep because they want to go fast, but the last engine was really underpowered given its size and fuel efficiency.
You would have at least thought that Jeep, with the 3.8L, would have put 4.10 gears in Standard to help alleviate this, I couldn't imagine 3.21 gears in a 3.8 though.....
__________________
-Justin
TxF150 is offline   Quote Quick Reply
Old 08-20-2011, 06:56 AM   #66
Jeeper
 
Join Date: Jul 2011
Location: Broken Arrow, OK
Posts: 2,305
Quote:
Originally Posted by TxF150 View Post
Looks like we got our new NASCAR pacecar selected here huh? Wow, 2-3 seconds faster than the boat anchor 3.8L. Ok, at the end of an entrance ramp, wow, you are two seconds AHEAD of where you would be if you were in a 2011. I saved 2-3 seconds in life, that is ASTRONOMICAL!

Where do I sign for these type of "speed of light" improvements?
Your logic here is very flawed. 0-60 two seconds faster will not correspond to a Jeep getting to the top of the onramp 2 seconds faster, probably more like 4 or 5 seconds faster. On some of our onramps that 4 or 5 seconds could be the difference between a happy merge and bending metal. Actually, it isn't about the 4-5 seconds, it's about being at 45 mph at the top of the ramp vs. 65 mph at the top of the ramp and being able to safely merge with a concrete wall on one side and bumper to bumper traffic on the other side with no place to go if you can't get in line immediately. In this case, which is common here, the difference in speed could add years to your life, not seconds.
__________________
2012 Silver Sport S, Silver, 6 speed, soft top, 3.73s, LSD, PCG, Infiniti, deep tint windows, Pro Comp 1028 wheels, 33" Duratracs, Smittybilt bumpers and steps, KC fog lights, Mopar slush mats and fuel door.

Happiness is a belt fed weapon.
oilwell1415 is offline   Quote Quick Reply
Old 08-20-2011, 07:04 AM   #67
Jeeper
 
Join Date: Jun 2010
Posts: 322
Quote:
Originally Posted by oilwell1415 View Post
Your logic here is very flawed. 0-60 two seconds faster will not correspond to a Jeep getting to the top of the onramp 2 seconds faster, probably more like 4 or 5 seconds faster. On some of our onramps that 4 or 5 seconds could be the difference between a happy merge and bending metal. Actually, it isn't about the 4-5 seconds, it's about being at 45 mph at the top of the ramp vs. 65 mph at the top of the ramp and being able to safely merge with a concrete wall on one side and bumper to bumper traffic on the other side with no place to go if you can't get in line immediately. In this case, which is common here, the difference in speed could add years to your life, not seconds.
Good point, I don't drive in Metro traffic very often (live out in a smaller area) so didn't consider that way of thinking about it, I just merge in when I drive in Houston or Dallas without considering how fast I am going, as long as I am giving it all it's got... which on the 3.8L, isn't enough sometimes...lol. Thanks for the explantion

Maybe once my Jeep becomes a danger due to lack of acceleration (been times I wish it had more, but didn't need it yet), I'll look into the new Pentastar Wrangler or a RIPP for my 3.8L....but my heart is really set on a diesel for some reason..... I hope they come out with it like they say, plenty of torque, modest HP even beats the 3.8L, and good mileage. Win/Win! Have a great weekend
__________________
-Justin
TxF150 is offline   Quote Quick Reply
Old 08-20-2011, 09:02 AM   #68
Jeeper
 
Join Date: Jul 2011
Location: North Texas
Posts: 202
I was going tote it go but couldn't.

I care about the 0-60 because the wrangler is my DD and I need to know how much space I need when I pull out onto a major road. Near work, there is a freeway entrance ramp that is very short and the is no lane to merge... You go straight from the service road to short ramp to freeway. 18 wheelers are not allowed to use the ramp. I believe the '12 jeep can safely take this ramp now - safely being the operative word.

Another situation. You are in the wrong lane at a stop light. You see the turn up ahead. With enough power, you can speed WITH the flow of traffic and safely change lanes. Before the new engine, you may have to double back if the traffic accelerates from the light quicker than you.

:steepingdownfromsoapbox:
rev2red is offline   Quote Quick Reply
Old 08-20-2011, 09:15 AM   #69
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 34,978
Quote:
Originally Posted by rev2red
I was going tote it go but couldn't.

I care about the 0-60 because the wrangler is my DD and I need to know how much space I need when I pull out onto a major road. Near work, there is a freeway entrance ramp that is very short and the is no lane to merge... You go straight from the service road to short ramp to freeway. 18 wheelers are not allowed to use the ramp. I believe the '12 jeep can safely take this ramp now - safely being the operative word.

Another situation. You are in the wrong lane at a stop light. You see the turn up ahead. With enough power, you can speed WITH the flow of traffic and safely change lanes. Before the new engine, you may have to double back if the traffic accelerates from the light quicker than you.

:steepingdownfromsoapbox:
Regearing will fix that

My (old) 07 w/ 4.10's getsup2 speed pretty dam good.

No secret that the auto JKU's were undergeared from the factory.

The only issue I have complained about comparing the Jk to my Tj is the drive by wire and throttle response. Some will disagree-but with the SprintBooster installed it makes a helluva difference. I'm sure the new Jk is the same.
__________________
2007 Rubicon/Rock Krawler triple rate 2.5" coils/RK rear TB w/ a teraflex raised bracket/Rancho 9000 31/32XL shocks/Synergy flipped draglink,ball joints,tie rod /Hankook MT 315-75-16 on Level 8 ZX's/Rancho geo brackets/Ruff stuff uppers/Fox ATS stabilizer/Adams front DS/Artec front armor w/ Currie upper bushings/Rancho cat back exhaust.

Lifting your JK? Read this!!



Click HERE to become a WranglerForum Supporting Member!
kjeeper10 is online now   Quote Quick Reply
Old 08-20-2011, 09:29 AM   #70
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,914
Thats kinda true, but


Quote:
Originally Posted by kjeeper10 View Post
Regearing will fix that

My (old) 07 w/ 4.10's getsup2 speed pretty dam good.

No secret that the auto JKU's were undergeared from the factory.

The only issue I have complained about comparing the Jk to my Tj is the drive by wire and throttle response. Some will disagree-but with the SprintBooster installed it makes a helluva difference. I'm sure the new Jk is the same.
By regearing to the "Nth" degree and reprograming the auto--there's no delay in my JKUR-throttle response--

Thats also in the ECU "learn" programing-the DBW-throttle response is governed by the ECU control over the "available Horsepower" delivery to the wheels and since we operate in SECONDS- the ECU operates in MICROSECONDS, so there's "No Delay", in our op. senses !!

Can'tbeatem

JIMBO
__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Old 08-20-2011, 09:44 AM   #71
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 34,978
Quote:
Originally Posted by JIMBOX
Thats kinda true, but

By regearing to the "Nth" degree and reprograming the auto--there's no delay in my JKUR-throttle response--

Thats also in the ECU "learn" programing-the DBW-throttle response is governed by the ECU control over the "available Horsepower" delivery to the wheels and since we operate in SECONDS- the ECU operates in MICROSECONDS, so there's "No Delay", in our op. senses !!

Can'tbeatem

JIMBO

It's one of the things you gotta try to believe. A programmer I hear has that option too but...
Now I'm sure having the SB installed limits the learning ability that my jeep has to eventually learn my driving habits, so when I turn it off, there is a huge change in pedal response.

Then again- I dunno

Oh... And how your 5.38's treatin ya?
__________________
2007 Rubicon/Rock Krawler triple rate 2.5" coils/RK rear TB w/ a teraflex raised bracket/Rancho 9000 31/32XL shocks/Synergy flipped draglink,ball joints,tie rod /Hankook MT 315-75-16 on Level 8 ZX's/Rancho geo brackets/Ruff stuff uppers/Fox ATS stabilizer/Adams front DS/Artec front armor w/ Currie upper bushings/Rancho cat back exhaust.

Lifting your JK? Read this!!



Click HERE to become a WranglerForum Supporting Member!
kjeeper10 is online now   Quote Quick Reply
Old 08-20-2011, 09:51 AM   #72
Jeeper
 
roxbury29's Avatar
 
Join Date: Aug 2010
Location: Schererville / Indiana
Posts: 908
Quote:
Originally Posted by kjeeper10 View Post
But why is it all about speed in the 12's?
I can see why some are getting irked.
We want to see some of them covered in mud or crawling some rocks like a jeeps are supposed to be doin
^^^
everyone seems to be fired up.... because from 11 to 12 the only real change is the engine/trans...

If it was a Hemi- I would be excited. / or if they could come up with an engine like ford has the V6-Supercharged Eco-boost / My dealer already said if I want to trade up from 11 to 12, I would likely not loose anything, Used vehicles are high demand, Jeeps hold value and 2012 I can still get supplier discount..

But for now, I will keep my Deep Cherry-2011 !!!
roxbury29 is offline   Quote Quick Reply
Old 08-20-2011, 09:52 AM   #73
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 34,978
Quote:
Originally Posted by roxbury29

^^^
everyone seems to be fired up.... because from 11 to 12 the only real change is the engine/trans...

If it was a Hemi- I would be excited. My dealer already said if I want to trade up from 11 to 12, I would likely not loose anything, Used vehicles are high demand, Jeeps hold value and 2012 I can still get supplier discount..

But for now, I will keep my Deep Cherry-2011 !!!
Wow, that's a deal breaker. is it the fact that your is NEW?
__________________
2007 Rubicon/Rock Krawler triple rate 2.5" coils/RK rear TB w/ a teraflex raised bracket/Rancho 9000 31/32XL shocks/Synergy flipped draglink,ball joints,tie rod /Hankook MT 315-75-16 on Level 8 ZX's/Rancho geo brackets/Ruff stuff uppers/Fox ATS stabilizer/Adams front DS/Artec front armor w/ Currie upper bushings/Rancho cat back exhaust.

Lifting your JK? Read this!!



Click HERE to become a WranglerForum Supporting Member!
kjeeper10 is online now   Quote Quick Reply
Old 08-20-2011, 09:57 AM   #74
Jeeper
 
roxbury29's Avatar
 
Join Date: Aug 2010
Location: Schererville / Indiana
Posts: 908
Quote:
Originally Posted by kjeeper10 View Post
Wow, that's a deal breaker. is it the fact that your is NEW?
Oct2010- picked it up... Every year something(small or minor) will change or no one will every sell and by a new one
roxbury29 is offline   Quote Quick Reply
Old 08-20-2011, 10:12 AM   #75
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,914
Heh Heh, I thought you'd never ask !


Quote:
Originally Posted by kjeeper10 View Post
It's one of the things you gotta try to believe. A programmer I hear has that option too but...
Now I'm sure having the SB installed limits the learning ability that my jeep has to eventually learn my driving habits, so when I turn it off, there is a huge change in pedal response.

Then again- I dunno

Oh... And how your 5.38's treatin ya?
I have made quite a few mods to my JKUR and the two most beneficial have been the aux cooling system and the regear !

No auto "overheating" EVER and with the regear I get up to 20% better mileage (drive like grandma) and up to 40 more APPLIED HP-

Course I put on SYNERGY ball joints at the same time-

JIMBO
__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Old 08-20-2011, 10:13 AM   #76
Jeeper
 
Join Date: Jun 2011
Posts: 147
I hope the 2013s can get under 7 secs 0-60. If they do i'll trade up.
Bronsonbull is offline   Quote Quick Reply
Old 08-20-2011, 10:18 AM   #77
Statler & Waldorf Show

WF Supporting Member
 
Mykll's Avatar
 
Join Date: Jun 2011
Location: Davidian Bunker
Posts: 835
Send a message via AIM to Mykll Send a message via Yahoo to Mykll
I tried to clock mine last night using my iPhone. At one point the stopwatch paused and started to tick a few tenths of a second backwards. Didn't tick off as much as I thought it would. Maybe I got a lemon.
__________________
2012 Sport S 2D, Silver, Hardtop, Manual, Tow, 3.73, Infinity, Air Bags, Power Convenience
Heated Seats, Side Steps, Hood Lock, Gas Cap Lock, Fuel Door
Ordered 6/27/11, D1 6/29/11, Built 7/22/11, Delivered 8/19/11.
Hummer Kills: 6
Mykll is offline   Quote Quick Reply
Old 08-20-2011, 10:40 AM   #78
Support Your Member

WF Supporting Member
 
QueueCumber's Avatar
 
Join Date: Jul 2011
Posts: 200
Quote:
Originally Posted by Mykll View Post
I tried to clock mine last night using my iPhone. At one point the stopwatch paused and started to tick a few tenths of a second backwards. Didn't tick off as much as I thought it would. Maybe I got a lemon.
Try the Dynolicious app. It uses the built in accelerometer in the iPhone to measure performance metrics (e.g. 0-60, 1/4 mile, etc.). It works well enough at the Jeep speeds. I wouldn't use it for anything faster than 4.0 seconds 0-60 as it seems to lose accuracy at which point the GPS performance meters appear to be more accurate. Just make sure you calibrate the app for your phone and also stabilize the phone when taking measurements. If you don't stabilize the phone correctly the measurements will be wrong--Not having to stabilize the device is another advantage of a GPS performance meter.
__________________
2012 Jeep Rubicon 2DR, Black, Fully Loaded (except side airbags and smoker's package), Auto, 4.10 Gear Ratio.

2010 Nissan GT-R, GMG, AMS Alpha 10 kit with LC1, Toyo R888 Tires.
QueueCumber is offline   Quote Quick Reply
Old 08-20-2011, 10:50 AM   #79
Jeeper
 
Join Date: Jun 2010
Posts: 322
Well, to be fair and honest: I looked up the videos on a 2012 Wrangler 0-60 vs the 3.8L. Man, I guess I shouldn't have been spouting off. They are a few seconds faster, looks like it is mostly from the transmission from what I could see, but.....defintely faster.

I think it would take a supercahrged 3.8L just to get even with a pentastar...to be fair. Crow doesn't taste that good after looking at those videos BTW

But I am still happy noentheless. No since in going for a test drive, the videos proved all I needed to see Nice job Jeep, I still enjoy the discount I got on my 2011 vs waiting, but like I said, crow is NASTY! have fun 2012 owners... you won't here me defend the 3.8L when it comes to acceleration anymore for sure.


Quote:
Originally Posted by QueueCumber View Post
Try the Dynolicious app. It uses the built in accelerometer in the iPhone to measure performance metrics (e.g. 0-60, 1/4 mile, etc.). It works well enough at the Jeep speeds. I wouldn't use it for anything faster than 4.0 seconds 0-60 as it seems to lose accuracy at which point the GPS performance meters appear to be more accurate. Just make sure you calibrate the app for your phone and also stabilize the phone when taking measurements. If you don't stabilize the phone correctly the measurements will be wrong--Not having to stabilize the device is another advantage of a GPS performance meter.
This app you speak of, is it for any smart phone,like android? I don;t know, my wife has one but mine is oldschool. Just curious, looks like a neat app to have.

Quote:
Originally Posted by Bronsonbull View Post
I hope the 2013s can get under 7 secs 0-60. If they do i'll trade up.
PM sent to you....
__________________
-Justin
TxF150 is offline   Quote Quick Reply
Old 08-20-2011, 11:31 AM   #80
Support Your Member

WF Supporting Member
 
QueueCumber's Avatar
 
Join Date: Jul 2011
Posts: 200
Dynolicious has a website. I know they have it for a few phones but I'm not sure which ones.

BTW, all of my tests were performed with the AC off. Plus, the soft top is still installed in my Jeep along with the hardtop until my hoist arrives next week.

I just performed a 0-60 with the front Freedom Top panels removed. I think I am getting better at accelerating this vehicle as well; punching the gas isn't the best method for acceleration in this vehicle it seems...

Latest run:

7.7 second 0-60 MPH

With soft top only this appears to be a mid-7s vehicle for whatever that is worth to people. With doors and all tops removed, of course, it will be even lower. Non-Rubicon tires would make it even lower for anyone interested.
__________________
2012 Jeep Rubicon 2DR, Black, Fully Loaded (except side airbags and smoker's package), Auto, 4.10 Gear Ratio.

2010 Nissan GT-R, GMG, AMS Alpha 10 kit with LC1, Toyo R888 Tires.
QueueCumber is offline   Quote Quick Reply
Old 08-20-2011, 11:37 AM   #81
Jeeper
 
Join Date: Jun 2010
Posts: 322
Quote:
Originally Posted by QueueCumber View Post
Dynolicious has a website. I know they have it for a few phones but I'm not sure which ones.

BTW, all of my tests were performed with the AC off. Plus, the soft top is still installed in my Jeep along with the hardtop until my hoist arrives next week.

I just performed a 0-60 with the front Freedom Top panels removed. I think I am getting better at accelerating this vehicle as well; punching the gas isn't the best method for acceleration in this vehicle it seems...

Latest run:

7.7 second 0-60 MPH

With soft top only this appears to be a mid-7s vehicle for whatever that is worth to people. With doors and all tops removed, of course, it will be even lower. Non-Rubicon tires would make it even lower for anyone interested.
Mid 7's used to be attained by SS 454's and big bolck type trucks, if they could hook up. Now, V6 wranglers and V6 turbo F150's are blowing that out of the water. Awesome! I am looking for that app sometime today when i get a chance

From what I could see, the RIPP supercharged 3.8L cannot accelerate like this either, seems they were in the 8 second solid range. I think the trans holds them back with tall gearing, and horrible gear spread. The 5 speed seems perfect for the application after watching the shift points on video. That is one reason I chose a 6 speed too, the 4 speed auto had to stiff of gearing.
__________________
-Justin
TxF150 is offline   Quote Quick Reply
Old 08-20-2011, 11:46 AM   #82
Support Your Member

WF Supporting Member
 
QueueCumber's Avatar
 
Join Date: Jul 2011
Posts: 200
Quote:
Originally Posted by TxF150 View Post
Mid 7's used to be attained by SS 454's and big bolck type trucks, if they could hook up. Now, V6 wranglers and V6 turbo F150's are blowing that out of the water. Awesome! I am looking for that app sometime today when i get a chance

From what I could see, the RIPP supercharged 3.8L cannot accelerate like this either, seems they were in the 8 second solid range. I think the trans holds them back with tall gearing, and horrible gear spread. The 5 speed seems perfect for the application after watching the shift points on video. That is one reason I chose a 6 speed too, the 4 speed auto had to stiff of gearing.
I'll figure out how to download and post the PerformanceBox data later today so people can check it out.
__________________
2012 Jeep Rubicon 2DR, Black, Fully Loaded (except side airbags and smoker's package), Auto, 4.10 Gear Ratio.

2010 Nissan GT-R, GMG, AMS Alpha 10 kit with LC1, Toyo R888 Tires.
QueueCumber is offline   Quote Quick Reply
Old 08-20-2011, 11:49 AM   #83
Jeeper
 
Join Date: Jun 2010
Posts: 322
Quote:
Originally Posted by QueueCumber View Post
I'll figure out how to download and post the PerformanceBox data later today so people can check it out.
Cool, I'll check it out when you do... Gonna get the wife to download that app if it is available for her phone today. Won't use it on my Jeep, but for future test drives, excellent idea!
__________________
-Justin
TxF150 is offline   Quote Quick Reply
Old 08-20-2011, 12:08 PM   #84
Jeeper
 
Join Date: Jul 2011
Location: Broken Arrow, OK
Posts: 2,305
Quote:
Originally Posted by QueueCumber View Post
Try the Dynolicious app. It uses the built in accelerometer in the iPhone to measure performance metrics (e.g. 0-60, 1/4 mile, etc.). It works well enough at the Jeep speeds. I wouldn't use it for anything faster than 4.0 seconds 0-60 as it seems to lose accuracy at which point the GPS performance meters appear to be more accurate. Just make sure you calibrate the app for your phone and also stabilize the phone when taking measurements. If you don't stabilize the phone correctly the measurements will be wrong--Not having to stabilize the device is another advantage of a GPS performance meter.
Another weakness in the accelerometer based performance meters is that they don't work very accurately in vehicles with a high center of gravity or with a soft, compliant suspension. Sound familiar to anyone?
__________________
2012 Silver Sport S, Silver, 6 speed, soft top, 3.73s, LSD, PCG, Infiniti, deep tint windows, Pro Comp 1028 wheels, 33" Duratracs, Smittybilt bumpers and steps, KC fog lights, Mopar slush mats and fuel door.

Happiness is a belt fed weapon.
oilwell1415 is offline   Quote Quick Reply
Old 08-20-2011, 01:18 PM   #85
Support Your Member

WF Supporting Member
 
QueueCumber's Avatar
 
Join Date: Jul 2011
Posts: 200
Quote:
Originally Posted by oilwell1415 View Post
Another weakness in the accelerometer based performance meters is that they don't work very accurately in vehicles with a high center of gravity or with a soft, compliant suspension. Sound familiar to anyone?
I personally had too many problems with accelerometer based performance meters, which is why I switched to the GPS-based PerformanceBox. Likewise, the PerformanceBox output is accepted by a lot of forums as reliable and valid.

I would be wary of any results you gain off Dynolicious. My personal experience is that the results can be erratic, but that is in a vehicle pulling over a G which may physically move the iPhone enough to invalidate the measurements...
__________________
2012 Jeep Rubicon 2DR, Black, Fully Loaded (except side airbags and smoker's package), Auto, 4.10 Gear Ratio.

2010 Nissan GT-R, GMG, AMS Alpha 10 kit with LC1, Toyo R888 Tires.
QueueCumber is offline   Quote Quick Reply
Old 08-20-2011, 02:38 PM   #86
MTH
Jeeper
 
MTH's Avatar
 
Join Date: Oct 2010
Location: North Carolina
Posts: 8,553
I do think it'll be interesting to see the various dynos that come out for the 3.6 in the Wrangler.

I've wondered how close a regeared 3.8 with a 6 speed will be able to get to the hp of the 3.6 at the wheels per a given speed. For example, when I go to 33s, I'm going to put in 4.88s. I'll obviously be turning higher RPM than a stock 3.6 with 33s and 3.21s, but I wonder how far the hp spread will be.

Right now I've got 3.21s in a 4 door with the 3.8. Thank the Lord for 6 speeds.
__________________
Mike
2010 JKU "Mountain" Edition
TeraFlex 2.5" Coil Lift : Old Man Emu Nitrocharger Shocks : 33x12.5R15 Goodyear DuraTracs : 15x8 Black Rock 909s : Other Stuff . . .
MTH is offline   Quote Quick Reply
Old 08-20-2011, 03:11 PM   #87
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 34,978
Quote:
Originally Posted by MTH
I do think it'll be interesting to see the various dynos that come out for the 3.6 in the Wrangler.

I've wondered how close a regeared 3.8 with a 6 speed will be able to get to the hp of the 3.6 at the wheels per a given speed. For example, when I go to 33s, I'm going to put in 4.88s. I'll obviously be turning higher RPM than a stock 3.6 with 33s and 3.21s, but I wonder how far the hp spread will be.

Right now I've got 3.21s in a 4 door with the 3.8. Thank the Lord for 6 speeds.
the 4:88's will feel like a rocket ship
__________________
2007 Rubicon/Rock Krawler triple rate 2.5" coils/RK rear TB w/ a teraflex raised bracket/Rancho 9000 31/32XL shocks/Synergy flipped draglink,ball joints,tie rod /Hankook MT 315-75-16 on Level 8 ZX's/Rancho geo brackets/Ruff stuff uppers/Fox ATS stabilizer/Adams front DS/Artec front armor w/ Currie upper bushings/Rancho cat back exhaust.

Lifting your JK? Read this!!



Click HERE to become a WranglerForum Supporting Member!
kjeeper10 is online now   Quote Quick Reply
Old 08-20-2011, 09:16 PM   #88
Newb
 
Join Date: Aug 2011
Posts: 5
0-60

After starting this post - today I picked up a 12 sahara unlimited 373 auto. Just sick. Don't think it's not big. It is.
intc001 is offline   Quote Quick Reply
Old 08-20-2011, 09:19 PM   #89
Jeeper
 
Join Date: Aug 2011
Posts: 43
Quote:
Originally Posted by QueueCumber View Post
Dynolicious has a website. I know they have it for a few phones but I'm not sure which ones.

BTW, all of my tests were performed with the AC off. Plus, the soft top is still installed in my Jeep along with the hardtop until my hoist arrives next week.

I just performed a 0-60 with the front Freedom Top panels removed. I think I am getting better at accelerating this vehicle as well; punching the gas isn't the best method for acceleration in this vehicle it seems...

Latest run:

7.7 second 0-60 MPH

With soft top only this appears to be a mid-7s vehicle for whatever that is worth to people. With doors and all tops removed, of course, it will be even lower. Non-Rubicon tires would make it even lower for anyone interested.
The stock Sport S GoodYear SR-A weigh 36 lbs.
The Mud Terrains are at 53Lbs.
EACH.
That is a HUGE difference in unsprung weight.
Add in the Lockers, swaybar disconnect, etc.

I guessed the low 7's before one was ever sold,
judging by the weight of a Grand Cherokee with a Pentastar at 900 lbs more.

Not bad for a box on wheels that gets 21 mpg highway.
NEO Jeep is offline   Quote Quick Reply
Old 08-20-2011, 09:30 PM   #90
Jeeper
 
samm895's Avatar
 
Join Date: Jul 2011
Posts: 104
i got a 92 yj probably about 12 or so. I love driving it, but when you wanna go fast, it wont work for you. Get a bike. My cbr 0 to 60 is 3.1

samm895 is offline   Quote Quick Reply
Reply

Tags
2012 wrangler , 2012 wrangler 0-60

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Buy 2011 Wrangler Sahara or wait for 2012? Oswyn JK General Discussion Forum 23 02-05-2011 01:12 PM
Best time in a long time BANGER General Jeep Discussion 2 12-16-2010 09:02 PM
10 Best Car Repair Tools of All Time larphead General Jeep Discussion 14 07-24-2009 05:29 PM
Meet Cory the well driller (political) skeeter Off-Topic 5 10-30-2008 02:54 PM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 09:26 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC