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Unread 11-02-2011, 02:08 PM   #1
deftones07
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Auto to manual tranny swap info

I really am considering swapping my 2011 JK tranny from an auto to a manual. I just need a manual and trading it in for a new wrangler would end up costing me tooo much, even though i wouldnt mind having the new engine.

so i found a manual trannys and am just wondering what is all the parts i would need for the complete conversion. hopefully make a bit of money off sellin my auto tranny aswell. any info is greatly appreciated.

I also have someone that could help me do the swap for a case of beer, so i ill be doing it myself with him.

thanks,

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Unread 11-02-2011, 02:25 PM   #2
jstrubberg
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Uh, good luck.

You are talking about a major change here. This isn't a shade tree mechanic job. You're going to have to change out the tranny, the driveshaft, install the clutch controls, change the electronics and hope the damn thing will even start when you are done.

You don't need a manual, you want one. I hope you want one enough to go through what you're talking about.
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Unread 11-02-2011, 02:28 PM   #3
5foot19
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Quote:
Originally Posted by deftones07 View Post
I really am considering swapping my 2011 JK tranny from an auto to a manual. I just need a manual and trading it in for a new wrangler would end up costing me tooo much, even though i wouldnt mind having the new engine.
you sure it wouldn't be cheaper to trade it in?
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Unread 11-02-2011, 02:36 PM   #4
Rdlynch2
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Why do you want to go auto to manual, shouldn't it be the other way around?

Wheeling is a LOT easier with an auto.

I would kill to have an auto with 5.13 gears and 35's!
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Unread 11-02-2011, 02:38 PM   #5
1AAdam
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def not. the new manuals work with the electronic throttle mostly for 'normal person' driveability and i have seen a few posts on here complaining about it. i would think they are completely different harness and ECM. lets try looking at it this way, why do u need a manual transmission? i like them just cause i like to shift and i think it's something of a dying breed.
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Unread 11-02-2011, 02:39 PM   #6
1AAdam
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Quote:
Originally Posted by Rdlynch2 View Post
Wheeling is a LOT easier with an auto.
ha! i was going to say this too. it's a lot easier to pre-load the drive train if u are in a tricky spot.
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Unread 11-02-2011, 02:54 PM   #7
deftones07
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well i guess it probably is too hard to do lol. im going to lift my jeep and put 33 or 35s on it, just feels like it has not enough guts in it to carry those. would you suggest getting it re-geared then?
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Unread 11-02-2011, 02:57 PM   #8
1AAdam
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yah thats the best thing to do when u increase tire size. once u do that u may want to put a superchips on it and it will prob run a lot better than u think. i did some short research online and auto is the way to go off-road. pro rock crawlers use CVT in their rigs! one used the saturn 4 cyl through a CVT straight into the trans case.
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Unread 11-02-2011, 03:04 PM   #9
deftones07
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Superchips is a good idea was thinking the same. now for gearing what would you suggest for 33s and 35s. I would like 35s on it for obvious reasons but most likely going 33s as this is my daily driver and its not the best on vehicle on gas.
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Unread 11-02-2011, 03:06 PM   #10
jstrubberg
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Regear, definitely. 4.88s for 33s or 5.13s for 35s.
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Unread 11-02-2011, 03:07 PM   #11
1AAdam
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if u re-gear u aren't going to get super mileage. ur actually going to re-gear so the engine can turn more which will burn more gas. people who have re-geared can tell u what they have and what kind of mileage they are getting.
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Unread 11-02-2011, 03:12 PM   #12
deftones07
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yeah my jeep right now wont be able to handle it and would most likely burn more tryin to spin those wheels. i can live with the lower mileage for the better looking jeep anyone regeared to 4.88s ? let me know thnx
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Unread 11-02-2011, 03:20 PM   #13
1AAdam
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yah i u lifted without re-gearing u would pretty much be using the same amt of extra gas pedaling it to get it to go if not more.
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Unread 11-02-2011, 03:20 PM   #14
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Quote:
Originally Posted by 1AAdam
if u re-gear u aren't going to get super mileage. ur actually going to re-gear so the engine can turn more which will burn more gas. people who have re-geared can tell u what they have and what kind of mileage they are getting.
Not true with the 3.8 auto. With bigger tires it will get better mileage running 22-2500 rpm then it will running 1700rpm and kicking in and out of OD on every little incline or gust of wind.
No matter how you look at it your mileage will drop as soon as you put bigger/heavier tires on.
There is no programmer available at this time for the 2011-12 that can tune the motor.
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Unread 11-02-2011, 04:26 PM   #15
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Running the auto is Ss great for on-road/off-road/towing and

If your going to pay to have your diffs regeared--go 5.13s, then you'll get better mileage and the O/D will stay locked MOST of the time-with 33s

If you had a Rubi you could go 5.38s and thats pure heaven !

Then an AEV Procal Module for your speedo and you're all set !

Changing from auto to stick in an 07 thru 12 is not even manageable-

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