Go Back  The Hull Truth - Boating and Fishing Forum > BOATING FORUMS > Trucks & Trailers
Reload this Page >

More Power Needed for Jeep JK Wrangler

Notices

More Power Needed for Jeep JK Wrangler

Old 03-08-2020, 10:28 PM
  #1  
Admirals Club Admiral's Club Member
Thread Starter
 
Join Date: Oct 2012
Location: Boca Grande,FL
Posts: 2,133
Received 535 Likes on 276 Posts
Default More Power Needed for Jeep JK Wrangler

I have a 2017 Wrangler JK with the 3.6 V6 and would like a little more power out of it. Been researching exhaust, CAI, re-flash but it seems gains are minimal. Would love to do a Hemi swap but the cost would exceed what I paid for the Jeep.

Anybody have any real world experience with this engine and can recommend good bang for the buck upgrades? Supercharger maybe?

I should also mention that it has 3.21 gears so Iím sure thatís helping to suck the life out of it as well.
Old 03-09-2020, 06:36 AM
  #2  
Senior MemberCaptains Club Member
 
Join Date: Jan 2007
Location: Tampa Florida
Posts: 6,775
Received 3,187 Likes on 1,826 Posts
Default

what size tires? 3.21 gears and tires bigger than stock size are going to make it feel like a dog. re-gearing and getting those RPMs back into optimal range is going to be the ticket. wont make it a race car but wont feel like a dog either!
Old 03-09-2020, 06:43 AM
  #3  
Senior MemberCaptains Club Member
 
Join Date: Jun 2002
Location: Treasure Island, FL
Posts: 971
Received 161 Likes on 95 Posts
Default

Originally Posted by Rolandt03 View Post
what size tires? 3.21 gears and tires bigger than stock size are going to make it feel like a dog. re-gearing and getting those RPMs back into optimal range is going to be the ticket. wont make it a race car but wont feel like a dog either!
Very true. Getting the ratios correct will make a big difference. Once I stepped up from stock tires the Jeep felt significantly slower. Corrected the gear ratios and it was back to feeling spritely
..
Old 03-09-2020, 06:49 AM
  #4  
Senior MemberCaptains Club Member
 
Join Date: May 2005
Location: South Florida
Posts: 9,670
Received 642 Likes on 371 Posts
Default

Regearing is really all you can do. Nothing short of a supercharger is going to make a truly noticeable difference, and that's $$$ and ends up creating its own nightmares of unreliability.
Old 03-09-2020, 07:33 AM
  #5  
Admirals Club Admiral's Club Member
 
Join Date: Aug 2013
Posts: 1,414
Received 591 Likes on 341 Posts
Default

Sell, buy the diesel. . I have to say, I had wood when the first review showed up. It will be a great engine in the Jeep truck.
Old 03-09-2020, 08:05 AM
  #6  
Senior Member
 
WaterEnjoyer's Avatar
 
Join Date: Jun 2013
Location: South Jersey
Posts: 12,438
Likes: 0
Received 1,435 Likes on 689 Posts
Default

exhaust, cai, reflash are a waste of money. gears if you want it to feel like it has more power. Supercharger if you want more power.
Old 03-09-2020, 06:58 PM
  #7  
Admirals Club Admiral's Club Member
Thread Starter
 
Join Date: Oct 2012
Location: Boca Grande,FL
Posts: 2,133
Received 535 Likes on 276 Posts
Default

Pretty much what I thought. The JK has 255\70r18’s on it. They are stock Duelers and I think they are 32’s. I’ll probably kick it up to 33’s or the 34 pizza cutters when I swap tires and will likely do 4.11’s at the same time.

Thanks for the input.
Old 03-10-2020, 09:29 AM
  #8  
Senior Member
 
Join Date: Feb 2011
Location: NMB Florida
Posts: 608
Received 48 Likes on 36 Posts
Default

Until you regear, you could add a peddle commander. I did until I could afford new gears and it made a difference. It won't give you any more power, but it changes the throttle response and won't make it as much of a dog.
Old 03-10-2020, 10:24 AM
  #9  
Admirals Club Admiral's Club Member
 
Join Date: Nov 2009
Location: Tarpon Springs, FL
Posts: 8,509
Received 4,031 Likes on 2,283 Posts
Default

Originally Posted by haneyrm View Post
Pretty much what I thought. The JK has 255\70r18ís on it. They are stock Duelers and I think they are 32ís. Iíll probably kick it up to 33ís or the 34 pizza cutters when I swap tires and will likely do 4.11ís at the same time.

Thanks for the input.
Just curious have you gotten a quote to replace the gearing in both axles?
Old 03-10-2020, 02:56 PM
  #10  
Senior Member
 
Join Date: Nov 2010
Location: OBX
Posts: 2,925
Received 215 Likes on 139 Posts
Default

like everyone's said, regear. Then add a supercharger and a tune. The pentastars wake up nicely with a supercharger.
Old 03-10-2020, 03:16 PM
  #11  
Admirals Club Admiral's Club Member
 
Join Date: Mar 2016
Posts: 1,165
Received 464 Likes on 271 Posts
Default

Thereís this neat little engine accessory that runs off the belt and shoots air into the intake manifold. I guess you could increase fuel to make more power. Canít remember what itís called though.

Supercharge it.
Old 03-10-2020, 03:28 PM
  #12  
Admirals Club Admiral's Club Member
 
Join Date: Nov 2009
Location: New Braunfels, TX
Posts: 1,029
Received 558 Likes on 345 Posts
Default

If you're going with 34s, go ahead and put 4.30s in it. I'd put 4.30s in it any way even with 33s, especially if it's an automatic.

The 3.6 supercharges nicely. One of the best engines made by Chysler in the modern era. It's a Mercedes design, right?
Old 03-11-2020, 05:30 AM
  #13  
Senior Member
 
Join Date: Jun 2009
Location: North of Boston
Posts: 4,407
Received 221 Likes on 150 Posts
Default

Ask folks on Jeep Forum for more answers or opinions.......Have owned various Jeeps over the years and those guys are the best.

My .02



Old 03-11-2020, 05:58 AM
  #14  
Senior MemberCaptains Club Member
 
Join Date: Jan 2007
Location: Tampa Florida
Posts: 6,775
Received 3,187 Likes on 1,826 Posts
Default

2 ways to accomplish what you want/need. gears or make more power. if you choose the more power option, you still should do the gears so the drive terrain gearing matches the size of tire they are trying to turn!
Old 03-11-2020, 02:34 PM
  #15  
Senior MemberCaptains Club Member
 
Join Date: Aug 2001
Location: Baton Rouge, LA
Posts: 9,233
Received 1,256 Likes on 448 Posts
Default

LS swap is the only answer. 6.2L 420hp with a 10 speed auto.
Likes:
Old 03-11-2020, 03:10 PM
  #16  
Admirals Club Admiral's Club Member
 
Join Date: Aug 2013
Posts: 1,414
Received 591 Likes on 341 Posts
Default

Manual or automatic?
Old 03-11-2020, 04:09 PM
  #17  
Admirals Club Admiral's Club Member
 
Join Date: Mar 2013
Location: Holden Beach, North Carolina
Posts: 3,370
Received 933 Likes on 529 Posts
Default

Call Rubitrux in Boone, NC. My cousin Jesse is the GM. Tell him how fast you want to go and they will make it happen. They do some amazing builds that are not your standard mall crawler. Over 650hp nascar built hemi swaps!!
Old 03-12-2020, 05:51 PM
  #18  
Senior Member
 
Join Date: Feb 2008
Location: Miami
Posts: 732
Likes: 0
Received 16 Likes on 10 Posts
Default

Yeah, don't call rubitrux because like you said whatever they offer will cost as much as the Jeep. I have had 3 of these so far. Intake/Exhaust pretty much makes it sound nice. A regear is your only option without going forced induction.
Old 03-14-2020, 12:01 PM
  #19  
Senior Member
 
Join Date: Nov 2002
Location: Long Island, NY
Posts: 8,812
Received 943 Likes on 715 Posts
Default

First thing is don't go crazy on tire size, and then the only practical option is to re-gear unless you want to take the risk and expense of a supercharger.
For myself this is why I will keep driving Grand Cherokees with the 5.7 Hemi. The extra torque off the line is very noticeable and we have one of both, the JK has just slightly bigger than stock tires (29.5"-->30.5"), its a six speed with 3.2:1 gears.

Posting Rules
You may not post new threads
You may not 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 On
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.