General Fit TalkGeneral Discussion on the Honda Fit/Jazz.
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I was wanting to get the best fuel milage out of my 08 fit sport 5 speed. I have owned a bunch of hondas before and some got great MPG and some did not. I have noticed it is because of the gearing in them. Not the way I drive.
I am willing to change out the final drive or just the 5th gear in my fit because I want better MPG. Im not worried about power loss because I know a fit is not a race car. So does anyone know if someone produces this or can produce it. I'm sure people would buy it because I am tired of 4k RPM's doing 80.
Humpty
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its all about how you drive. with the fit's lower HP and torque, this may actually hurt your mileage.
Not 5th gear for most people. I would pay to have one. I have owned a high geared 99 dx SOHC honda and it was so slow but I got 49 - 52mph everywhere and I live in the mountains. I know it would get better MPG on the highway or interstate. And whole in the hell pulls up a good sized hill in 5th. no one. I know alot of fit owners and 4k rpms on the interstate for 50 miles is killing MPG.
I think AJ Racing is selling different final drive sets for the 5 speed. They aren't meant for better economy but they may be able to steer you in the direction of who does make a higher ratio gear-set. I live in the mountains and I climb hills in fifth all the time, the fits ability to climb at 60MPH in top gear is one of the things I love most about it. I would personally rather see a six speed manual with a "cruiser" top gear while maintaining the current final drive.
__________________ Some people are like Slinkys; they can only make you laugh if you push them down a flight of stairs
Best way to improve your MPG is to not drive 80 mpg.
The reason the car is geared the way it is, is so that you are getting sufficient torque to maintain your speed up an incline and against wind resistance at highway speeds.
The amount of money you would spend swapping out your gears is going to exceed any savings you are going to get by lowering your RPM slightly at 80 MPH. It's not practical IMO.
If you're serious about fuel economy, no matter what car you drive, you will save a significant amount of fuel by SLOWING down. Way more than you will with a gear swap. It's wind resistance, not just your RPMs.
Best way to improve your MPG is to not drive 80 mpg.
The reason the car is geared the way it is, is so that you are getting sufficient torque to maintain your speed up an incline and against wind resistance at highway speeds.
The amount of money you would spend swapping out your gears is going to exceed any savings you are going to get by lowering your RPM slightly at 80 MPH. It's not practical IMO.
If you're serious about fuel economy, no matter what car you drive, you will save a significant amount of fuel by SLOWING down. Way more than you will with a gear swap. It's wind resistance, not just your RPMs.
THANK YOU!!!!!! that's how some people get 23mpg, adn some people get 50+mpg.
It's going 80mph that's killing your gas mileage, not the Fit's gearing.
__________________ 2007 NBP Fit Sport MT Honda Floor Mats || Honda Cargo Net || 35% tint || custom CAI || Blox shift knob || LED dome + cargo lights || Megan axle-back || Zeta dead pedal || "Dirty White Boy" air freshener :-D
I'm sorry, I didn't realize those of us who drive 65-70 instead of 80+ are pansies.
I don't know of any longer final gears. I know there are shorter ones out, but that'll just make RPMs higher at 80mph.
You'd probably be better off getting some low-resistance tires and doing a little drafting behind rigs. Drafting will get you some amazing mileage.
__________________ 2007 NBP Fit Sport MT Honda Floor Mats || Honda Cargo Net || 35% tint || custom CAI || Blox shift knob || LED dome + cargo lights || Megan axle-back || Zeta dead pedal || "Dirty White Boy" air freshener :-D
I was wanting to get the best fuel milage out of my 08 fit sport 5 speed. I have owned a bunch of hondas before and some got great MPG and some did not. I have noticed it is because of the gearing in them. Not the way I drive.
I am willing to change out the final drive or just the 5th gear in my fit because I want better MPG. Im not worried about power loss because I know a fit is not a race car. So does anyone know if someone produces this or can produce it. I'm sure people would buy it because I am tired of 4k RPM's doing 80.
Humpty
The problem is not the final gear, but any lowering will likely cost you mpg. The final is pretty low numeriically now and if you lower it you'll spend too much time in the lower gears just trying to keep up.. Its not like a 396, there isn't lots of torque available.
It doesnt make sense that you have to drive like a pansey when a gear can fix it no problem. And here is what you save in 6 months if you drive 20,000 miles.
If gas was 3.95 regaurdless, you have 20,000 miles on your fit. 20,000 devided by 36 {which is MPG for most = 555.55 gallons of gas. which is $2194.42 in your gas bill in 6 months
Now you have 20,000 miles on your fit and you get 48 MPG the whole time without being a asshole and drafting, and coasting, and going super slow to get better gas milage. AND THIS IS WHAT MILAGE WOULD BE WITH A HIGHER GEAR. 20,000 devided by 48 MPG = 416.66, Then you times 416.66 times $3.95 which = 1645.81
Now $2194.42 - $1645.81 = $548.61 in gas saving every 6 months. And if you get MPG now you can get more without having to take 1 hour to drive 35 miles.
I don't think it is realistic to think you are going to go from 34 mpg to 48 mpg @ 80 mph by swapping gears. Perhaps you might consider learning a little more about how these things work as far as physics and math are concerned. I would explain your plan and the MPG increase you expect from it to a mechanic or an automotive engineer and see what they say. I'd be interested to hear their answer.
By all means, I encourage you to pursue this project.
Please, buy a Scangauge and make sure to keep records and take pics so we can all see you getting 48 mpg going 80 mpg in your Fit.
Last edited by Sid 6.7; 07-14-2008 at 01:04 PM.
Reason: Removed original insult in quote
would be to replace the stock tires with "taller" tires.
I just replaced mine with Michelin 195/60HR15 size tires and now my rpms are down by ~2000-3000 rpms at highway speeds.
The speedometer/odometer/tripmeter are reading low by ~3% but I don't care. It yields better fuel economy and less engine noise at those speeds.
I thought of suggesting the taller tires but just kept quiet. For some reason this alternative is frowned on. Please keep us updated on your mileage figures. Achieving better highway MPG cheaply with an MT seems like a reasonable objective.
That's a shorter final drive, it will RAISE his RPMs.
What he wants is taller gearing. The Fit comes with a 4.29:1 final drive for manual transmission models, 4.7 would raise the RPMs quite a bit. The automatic Fit has 4.56 I believe.
What he would want is probably something like 4.1:1 or even 3.9:1 but I'm betting they don't even make them and even if they did it wouldn't give him the results he's hoping for.
Everyone stop, NOW and remove the insults from your posts, or this thread will be deleted. I don't care who started what first, or who is being an idiot and can't understand basic physics or not.
Act like adults and treat each other with respect or you will be removed yourself.
would be to replace the stock tires with "taller" tires.
I just replaced mine with Michelin 195/60HR15 size tires and now my rpms are down by ~2000-3000 rpms at highway speeds.
The speedometer/odometer/tripmeter are reading low by ~3% but I don't care. It yields better fuel economy and less engine noise at those speeds.
Uh, your rpm would be down by 3% too, or 200-300 rpm and I doubt you're seeing much change in actual mpg but the noise is less. That's 200-300 rpm not 2000-3000.
Anyone offer a new tranny gear for a 5spd fit?
Some people are like Slinkys; they can only make you laugh if you push them down a flight of stairs
A cheaper and easier option . . .
Linear Mode
