Did Re-Gearing My Jeep Gladiator Affect the GAS MILEAGE?
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- เผยแพร่เมื่อ 6 ม.ค. 2020
- After installing larger tires, a lift kit and adding several heavy accessories to my Jeep Gladiator, I began to notice a reduction in performance. I elected to swap out the ring and pinon gears to see if I could get some of that performance back. In the process I wanted to do a test to see how it would affect my gas mileage. We tried to be as fare as possible in our pre and post gas mileage test, but because this is real world, there are several factors that can affect the results. #jeepgladiator #mpgtest #gasmileage
Jeep Wrangler Re-Gear Video: • What GEARS Did I Insta...
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It wasn't mentioned in the video, but yes I did recalibrate my speedometer to compensate for both the tire size and gear ratio. As for why I chose 5:13's, I think 4.88 is a good ratio to go with for a 38" tire, but because I carry extra gear and plan on doing some off-road towing I wanted to go slightly deeper, and that's why I chose 5:13'. Sorry for not explaining that in the video.
TrailRecon I am concerned if the slight increased rpm (4:88) will move it up the horsepower curve enough to still pull 8th gear at interstate speed (75 mph). I realize I am on the verge of asking to much. You did confirm you see 8th a lot more with gear swap.
What’s your rpm at 70mph in 8th gear ?
Thanks for answering my question before I could ask it.
What did you use to recalibrate your speedo?
I’m currently running 37 Pats, would you recommend 5:13s if I plan on building my rig similarly to yours as far as weight is concerned? Thanks Master Chief!🤙🏽
This is an excellent format. The tech talk, the motor noise, cruising backroads, scenic stops. More like this please?
Thank you, glad you enjoyed it!
The MPG gain wasn’t super impressive, however the increase in MPG PLUS the extra low end power is a win IMO.
Wow, gentlemen, I am so impressed that i subscribed, I`m an old disabled mechanics and over the years explained or at least tried with some guys to explain what happens with bigger tires and gearing, and then of course, braking and shocks, so many other sites just add tires and never explain the changes in bottom end performance versus top end and real-life changes. Well done!
The added weight of the breakfast burritos has made this test invalid! :D
LOL!
Great Job Brad! I do a lot of gears for people and explaining what you have found in this video people don’t believe me. Not only do you pick up a little mileage but it’s so much more fun to drive a properly geared 4x4 on or off road.
Thank you! Great to hear you are seeing similar result!
This video was perfect, ty. Just the I do I was looking for. Keep up the great vlogs
Great video with some good conversation about all the things that can go into ruining or increasing your gas mileage. I think people don't realize how big a difference regearing can make when you jump more than a couple inches in tire size from factory. One of the first things I do to my vehicles now that get more than a small bump in tire height.
awesome video brad!!
Great job well done, the smile, and test driving after completing the project, priceless
Nice job Brad! love the wrap on your Glad! hope you leave it on..
That was an awesome and interesting video!! So cool to hear all the technical details about what y'all did. Not many people understand how it works. Keep those coming!! Thanks Brad!!
Thank you!
Was cool seeing my old stomping grounds. The tower ( really the caves) holds a special memory for my wife and I. Oh, and holy crap, I cant believe 87 is $4.03!!!! I am reminded of one of the reasons I fled CA.
Thank you! I’ve been wanting to see a video about this
Very informative video Brad. Thanks for sharing.
Great video Brad! Very informative and even entertaining for what can be a dry subject. Your co-host did a great job too, I hope you do more videos with him in the future!
Thank you! Ryan is a great guy and here is a video discussion we did when we were on the trail in Alaska you might enjoy: th-cam.com/video/5te-TkRaCXI/w-d-xo.html
Had a 26' Penske loaded and towing my CJ7 on a trailer. The truck's rear tire developed a bad vibration over 50 so I had to drive from LA to OKC doing 50. I got 8 mpg before the vibration and 16 mpg after. Lesson learned about pushing air.
Thanks Brad!! I'm planning on a regear and this helps alot
Great video Brad. That took a lot of work! Thanks for continuing to add the best Jeep content our there!
Thank you! We had fun filming it!
Outstanding content Brad!
I think the more you skinny down the items sticking out the sides and top will help..
I seldom get my JT in 8th gear, and I’m on stock 4.10 and stock 33’s
I get about 18 mpg around town and close to 21 freeway..
I’m from California and still travel there quite a bit..
I freak out over the price of gas, and many other “California” issues..
$2.66 in Colorado for 87..
We have been as low as $1.89 for 85..
Again, probably one of your most informative vids..
I love the tech talks!
I’d be celebrating 1 MPG at those prices! Crazy!!
So much knowledge, keep it up with the great content.
Thank you!
Very interesting - thanks Brad!
Hi Brad and Ryan! What a cool comparison!
Great to see some home turf every now and then! I never knew about the truck museum, but now I’ll have to check that out.
I absolutely love this channel , I cannot wait to get myself back into a jeep, I made the mistake of selling my xj, oh boy never again will I ever do that...
Great video, thank you so much!
Excellent content as always! Now that you’ve “slimmed down” your gladiator profile with the new rack and hard shelled rtt, have you seen an even bigger increase in fuel economy?
Absolutely love your content brother. I am currently overseas saving up for a wrangler jk and your videos provide great insight to the off roading world. You for sure earned another sub and I cannot wait to go back home and hit the mountains with some friends and family! Also, it is killing me to try some of Marcos food, that man is a champ!
Thank you!
Didn't realize you were in S.D. county. I recognize all the areas on your drive. Grew up in El Cajon. All my family is still there. Left CA about 30 years ago for a National Park Service career. Been in Moab that past 20 years. Love your videos.
Once again another great video. I'd love to see how much more improvement you'll get once you address some of the areo or weight. Keep it up Brad!!
Might be an excuse for another road trip and burrito!
Nicely done Brad. Liked the side excursions - Now I need to check out the Desert Tower, Epic Breakfast Burritos and the Campo Motor Transport Museum :)
Excellent little test! It's nice to see real world tests for stuff like gear upgrades. I'm curious, do you have stock, or aftermarket lockers? How much would lockers affect gas mileage? Thanks for the great content!
I just put gears in my Jeep by fearless gears in Fresno Ca!! I’m running 33’s but going to run 35’s. Just deleted the front fenders and put on a few things. Next is a winch and a rear part time locker. I believe I’ll have my Jeep tj 4.0 ready!!! I’m pumped
Good info thanks , killer old Chevy.
It's an awesome K5!
Hi Brad,
Thanks for this video! Great information. I have a 2017 jkur with 2.5” lift and 35’s running 373’s.
I love this video and decided to look into a gear swap to 456 or 488. I live in CO and prices are all over the map, as low as 1250 up to over 3000. Are there any questions I should be asking? I think I you said a gear swap should be around 1200-1500. Thanks for your time! Love the channel
Those size burritos are two meals for me! Great Video!
Great info! Nice video as always and #TYFYS too!
I was watching this video and noticed you came through Campo. I’m a Navy CEC Officer and oversee the facilities and utilities for the two camps out there. Was cool to see the route. Wasn’t expecting that. Very informative video btw.
Thank you for your service! #gonavy
Great video!
I’ll take a real-world test over a closed course any day.
But I’m dying to see more trail videos. That’s what I signed up for in the first place. ;). Show us more of that Gladiator in the snow.
This is why I love this channel. That little extra that you give to add some real-world examples/results of the modifications. Lab specs are great for comparing products but being able to see what the product will do for you on your rig is something that is hugely missed by many. Nicely done and thank you!
Brad, great video. Did you update the Gladiator's computer with the new tire size and gear ratio?
What a shock to me that you improved your gas mileage! Back in 1969 I had a Z28 Camaro and put 538's in it. Gas mileage went way south! Made the mistake of driving it from Okla to Indianapolis once. Gas was like 32 cents but I was only making 2 bucks an hour. It got to 60 really quickly though! :)) I know the situations are different and tech is different, etc etc, but I was still surprised at your gas mileage improvement.
Great video thank you!
Thanks so much👍
I'd be willing to bet that the lights and the roof top tent are each worth another 1 to 1 1/2 MPG . Bringing you up to that elusive 20 MPG!
Hi brad
Thanks for posting this; an interesting topic and nice adjunct to most off-road videos. Whilst your discussion centered around Wrangler and Gladiator, re-gearing and its results would equally applicable to other 4wd’s. I am chuckling at all the comments being posted about fuel prices you are paying. Here in Australia, A$1.50 per liter is an average. By my rough calcs that is around US$4.09 a US gallon, so feeling your ‘pain’.
.....Cheers from Downunder
Thank you! My Wrangler saw a slight drop in fuel economy when I re-geared it, but an improvement in drivability, but it only has a 5 speed transmission. Different results for different model vehicles.
this is exactly opposite of what most people tell you, great to hear man ! 488"s here I come ! (on my JLUR on 37s) thanks Brad, great video man !
The 8 speed changes everything.
I'm thinking about going 5.13's on my JLUR also on 37's. I would love the low end punch, going from 4.10 to 4.88 just doesn't seem like it would be worth it.
@@GSXRKLLR in 4 low it would be way to low for me with out a throttle comp....
Nice video and discussion Brad and Ryan. Thanks for sharing once again. I’ll have to check out Ryan’s shop the next time I need some upgrades done.
BTW... I fill up at that same gas station and yes, fuel prices in Ca are terrible. 😒
Jac Man the 4wpengineering technology center is like the bat cave. Not very many people know where it is. Lol but, we do have 96 retail stores all over North America that can help you.
Still half of what you pay in Europe
drtstar1 - Thanks for the reply.
I can be a bit slow sometimes but I finally figured out which 96 stores you’re referring to. Lol
In fact, I’ve done plenty of business with the El Cajon store and almost as much with the Chula Vista store. Not to forget the annual visits to the Off Road Expo in Pomona. Always upgrading and now Brad has me thinking about getting a Gladiator! 🤔
Wow that’s pretty good gas mileage for your truck. I only get 10.5 mpg in my CJ5 with an AMC 401 V8 with 33s. But she sure is fun to drive around and sounds awesome 😎
I've been to that tower! On our way to San Diego from Tucson. Even did some rockhounding in the area. That area made my wife a little uneasy, so of course I want to stop there every time we go by it. lol
Love your videos! Quick question the computer is notoriously off by -2mpg from what I have seen and done the math to check multiple times, do you check manually by how many miles you driven + how many gallons you used?
Nice job as usual. Some good info many of us can appreciate. Thanks
You guys inspired me to do this work btw!! It was stock for a long time!! I put money into my diesel and house! Side note (The wife loves it) haha
Loving the seat color
Great test!
I do have a question that you or someone here might be able to help me with.
I have a 2016 Sahara JKU
3.5” lift front w/winch and rear bumpers currently on 35’s but looking to do 37’s or 38’s. As you know the thing is heavy.
So looking to install some lockers and re-gear at the same time this year, but not entirely sure what ratio would be best. I hear so much back and forth on this. I trust your opinion because it seems you really do your homework before making a decision.
I do remember you did a video on your JK a while back, but can’t seem to find the video.
Thanks
Wow, I called it at 17.2mpg! On my 96 Chevy, 350 AT, 35" BFG's and 6" lift I went 3.73 to 4.56 gears and went from 17mpg to 18mpg on the highway. But City went from 13 to 15 because the lower gears made it easier on the engine to get to speed. Gears will help your engine and mileage, it may just take a few years of driving to make up the $2,000 price of them. Great study!
Looking forward to seeing how the Diesel version of the Gladiator does in a similar test
BRAD!!! You never been to the desert tower before? 😮
I moved to Texas and haven’t seen that area in over 30 years. Brought back good memories. ❤️
There used to be a cooking on your engine cook book called Manifold Destiny.
I noticed the 8th gear issue with my JLU Sport S when I put 35s on it. I don’t believe my stock diff can do the 4.88s that I really need. So, now I need to be thinking about replacement axle! Ah, the Jeep life!
Thank you for the great videos! I am curious about your and his opinion on the best gear ratio on a JKU with 3.6 motor and automatic riding on 35's with a 3-inch lift? We do go offroad.
Those old trucks at the Motor Transport Museum look wicked cool!
It was a great stop, I think I'll be going back!
That burrito place is awesome and I stop there every time I’m in the area. In fact I just had the chorizo burrito yesterday!
Cool comparo. I swear I can see the needle dropping on my FJ (16-19 mpg, live in not-flat CO)
Hey Brad great video, just wondering how long do you realistically think it will take the money saved by the improved mpg to pay for the parts and labor to re-gear? It's always those kinds of things that help me make decisions. Help out a new jeeper and member of the TR team by answering
I choose the "ignorance is bliss" method of calculating my jeeps mileage. Turned off the mpg thing on the dash, it was just too damn depressing. Still won't drive anything else though!
Hey brad. Having had both 4.88 and 5.13 gears, which would you recommend for a daily driver? Is there that much of a difference? How do they compare on the interstate?
Very interesting, more vids like this please! And lower that tent!
Amazing how some people will argue about gear changes, once you understand the concept you'll never look back.
Also, thank you for the great video!
I've always seen that tower and UFO's going to and from the desert, but never stopped and checked it out. Pretty cool to hear the story of the tower.
This was my first time and I've also driven past it 100 times... glad we stopped.
Crazy how my 06 Toyota 'V8' Sequoia gets better MPG than your original gears. Now you're getting about what I get now in 20°F weather. I like both vehicles though.
Nice video. I was surprised to see my home town. I live 1 mile from that truck museum in campo
There's a fine line between making a TH-cam channel successful and selling out. Where does one draw that line and find that balance? Started from scratch and as a channel grows the more sponsors it attracts. The more sponsors one gets, the more it starts to look like an infomercial, biased and unorganic. Then along comes the haters and trolls. How does one know where to draw the line before their channel gets too big to the point where the content becomes unrelatable to the average Jeeper?
Thanks Brad - I’ve been waiting on a video about re-gearing the Gladiator! How many hours labor did that take? I imagine it’s expensive. Also does it void the manufacturer warranty on the drivetrain?
I was told that it does not void the manufactures warranty when doing a lift & regear. There was some sort of landmark case that made it possible to retain the manufactures warranty & they can't drop you for it. I could have been lied by my Jeep shop you never know but this was what I was told.
From an internet search:
Regearing does not void your warranty, BUT don't expect a Jeep dealer to fix any issues with gears that failed. The replacement parts would be your responsibility to get from aftermarket manufacturer.
What was the rough cost on the parts and installation? Curious from a payback point of view on the fuel savings.
2008 JKUR.. Dealer had put 35's on it already w/2.5"lift. Stock gears were the 4.10's. Pulling a trailer at 70 mph on the hiway, only time it would get out of 2nd gear was downhill. I went to 5.38's (also cryo-dipped them) and I at least stay in 3rd now. W/O trailer, even the OD stays in better. Ya, is the 3.8. But my mpg did come up too.. Varies on what I do, but 1~2 range is common. And yes, I is much more spunky both on street, and crawls crazy great.. Thou, off road, I have use the programmer to set to crawl mode. Too jumpy if don't..
Hiway mpg.. Around 15±. Have been into the 16's under ideal conditions a couple of times. 12.5~13 common around town. All is better then with the stock gears.. 63k on it currently. Gears were put in at 10k.
Very informative
your face at: 17:00 "yooo I said the simple version!"😂
Thanks for another great video Brad! You were going to discuss why you choose the 5.13 over the 4.88 or 5.38 gear ratio? Short answer?
Prescott Lederer also want to know as 4:88 puts it closer the factory ratio.
I think 4.88 is a good ratio to go with for 38's, but because I carry a lot of gear and I will be doing some off-road towing I wanted to with a slightly deeper gear, so that's why I chose 5:13's. Sorry for not explaining that in the video.
I will be re gearing my Jeep pretty soon,, I would like an advice and I know you mentioned on your other jk you would be much happier with 5:13s on 37. Now with this 5:13 on the gladiator and being on 38s . What gears would you recommend and what lockers you prefer ?
Great explanation of regearing. I regeared my 2017 Tacoma DCLB auto this year and finally found 6th gear! MPG improved by approximately 3 mpg overall since it could finally find cruising gear. And the transmission hunt finally stopped too. Great video Brad.
Oh, forgot to mention that I didnt recalibrate the speedo. So probably increased MPG a little more. Just running 33's tho.
What did you regear to since I also have a 2017 taco?
Thanks!
Brad, based on where you are now with the build, should you have bought a Sport S?
Good stuff Brad. It's going to be very interesting to see how a comparably equipped diesel version will do if Jeep ever makes it happen.
I'm hearing the Wrangler diesel is going to blow the mpg I'm getting out of the water!
Love your Gladiator build! Impressed with the MPGs you are getting. I’m getting around 17 on the Highway in my JK. But average around 15 on all around driving including Overlanding trips.
The question will be,"will the mpg on the diesel make up for the increase in cost per gallon?"
Of course the diesel engine will outlast a gasoline engine by a long shot and have better overall performance and for those reasons I would go diesel every time.
My question is how will it take to recoup the additional cost of the diesel engine? Obviously, the cost per gallon is the big factor but how many gallons? There has to be a math whiz out there who can figure that out for us Liberal Arts majors.😀
I've owned 7 Jeeps, all just minimally powered. The diesel is a $4000 option on the Wrangler and diesel cost .40 more than gas. For my personal satisfaction and driving pleasure I will pay the extra cost regardless. Life is short and you can't take it with you.
What brand gears have you been using in both your JK and JT?
The next time you are in a gas station, look at the nozzle on the hose, you will see a 1/4 inch tube in there, because of CA emmissions, that tube is designed to suck the gas back out to keep it from going into the atmosphere or on the ground. Every time you click the handle after the auto shut off you are putting gas back into the ground tanks of the station
Modest gain in mpg. Cannot use that as justification to regear but other benefits still make it a worthwhile mod. 👍
Thanks for the video. My JLUR is getting 5.13 in five days. Can't wait. Like you, my Jeep almost never sees 8th gear.
That just means you're not driving it fast enough. Go faster lol
Hey Ted, any info on your build? I'm thinking about 5.13 vs 4.88... 2020 jtr
@@mathewmue5547 I just came home from a 5834 mile wheeling trip. Pulled a small camper. Did 8 days in Mab, then the Rubicon trail, then trails in Wyoming and back to Michigan. Avg 14.5 mog pulling the camper plus off road driving. I get about 18 to 19 on the hyw for normal driving and 15 around town. I see 8th gear all the time even pulling the camper. 8th gear in town above 45 mph. 5.13 gears and never look back. The 5.13 gears are perfect with the 8 speed auto.
@@mathewmue5547 I am lifted with 37s on bead lock wheels, winch. Big bumpers, the heavy stuff.
Maybe a silly question, but doesn't that worry you that it blows your factory warranty out of the water?
Need to test drive that old Chevy next!
The iDRIVE throttle controller has greatly increased by fuel mileage on my lifted with 38s 2014 JKU by using the E-1-9 mode, it softens the throttle, and it increases my mileage to better than factory predictions, but then I can go to u mode and have lots of throttle.
@TrailRecon are you running the stock diff covers? if not, which ones did you go with?
Hey brad hope all is well definitely see the benefits for the gear you carry etc off road should be a plus also a little extra range is good on the long trips to curious if you thought of a saddle tank I no there’s extra weight involved but curious on your thoughts as always be safe
It think a saddle tank is a good option, but for me if I install any kind of auxiliary tank on the JT it will be for water. There are some under the chassis aux. fuel thanks out there, but I haven't seen one that doesn't affect clearance yet.
Hey Brad. Two days ago I picked up my 21 Gladiator Rubicon with the diesel. I want to go to 37s with a lift mainly for aesthetic reasons. This is my daily that I drive about 150kms/90 miles a day. Other than that, I might do some overlanding but no plans for anything more.
With your experience, do you think I need to be re gearing?
Value your opinion.
In 01 I bought a new gutless 1500 ram 4x4 with a 360 magnum engine. 3.55 gears got 11 mpg max. Tranny blew at 20k, factory reman.Put 33” tires on and got 9 mpg and more gutless. Blew the tranny at 40k. Put 4.10 gears in with a hand built tranny and got 12 mpg, more if it was unloaded and I milked it. Even when it was all stock, it struggled to stay in 4th gear. The 4.10 gears were way better and the transmission lasted another 200k when I sold it for scrap because I live in Michigan and the salt ate it up. I did sell the transmission to a friend of mine who put it in his plow truck and ran it for another few years. I still should’ve went with 4.56 gears though. Those 360 magnums were worthless!!!
re-gearing has been hands done one of the best upgrades ever. We got the Jeep with 35" and it always lost power uphill. Still breaking in the new 4.88 but it is exceptionally noticeable the already better MPG in slow driving around town and it feels stronger.
😢😅😊😊 2:06 😅
2:06 2:06 🎉😊 2:06 2:06 😅😅😅😅
😢😊 4:04 😊😅😊😅😊😅 4:04 4:04
😊😊 4:04
Gladiator Mojave 6-sp Manual I get 17-18 city 19-24 hwy. Keep it under 2200 rpms the 3.6 is amazing considering this is a lifted truck on 33 mud terrain tires. My friends taco only get 16 with 275 all terrain tires. I will do a video on this later.