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jmf 08-26-2010 07:39 PM

honda fit Question
 
My friend just sent me this question:

"We bought a Honda Fit at the beginning of the month. The engine revs to over 3,000 RPM's at 60 MPH, is that normal given the size of the engine? "

Anyone with a fit, does this sound normal.

Thanks

theholycow 08-27-2010 04:45 AM

Re: honda fit Question
 
Yes, that's normal for a Fit. It's Honda sticking to their reputation of low torque and high RPM.

A report from a Fit owner: https://www.standardshift.com/forum/v...193083#p193083
Quote:

i go 70 mph at 3.5k in 5th gear
Feeding data from https://automobiles.honda.com/fit/specifications.aspx into https://www.f-body.org/gears shows that 60mph should be closer to 2800, but math doesn't always equal reality when you account for varying tire sizes, gauge calibrations, etc.

jmf 08-27-2010 03:01 PM

Re: honda fit Question
 
Thanks I will let them know.

thisisntjared 08-29-2010 12:20 PM

Re: honda fit Question
 
yup. my wife has a fit and the gearing is the most obnoxious thing about the car to me. i wish it had a 6spd like the sentras.

theholycow 08-29-2010 04:26 PM

Re: honda fit Question
 
If they changed it to a 6 speed, it is likely that they'd make the gears closer together instead of tacking on another gear (or otherwise providing a wider total range). That seems to be SOP. Either engineers or customers don't like a tall gear that can only be used at highway speed and may require an occasional downshift for climbing/passing.

add|ct 08-29-2010 05:38 PM

Re: honda fit Question
 
The Fit seems to have a very short first gear and isn't as easy to be 'smooth' compared to Civics. I only drove a manual of a friends a couple of times, though.

I just now tried driving a '99 Civic Si of a friend today; comparing it to the '92 VX, I definitely could get into the feel of the Si easily. I could get the car to 5th gear so much faster in the Si than in the VX. I wonder if its because of having more HP and torque? It rode as well, or better, in 5th at 30 MPH in the Si compared to 5th at 40 MPH in the VX. I did like the ride comfort improvement to boot. The VX just wants to die compared to the Si if you try to drive it very easily. I'd imagine its because of going in/out of lean burn.

Though, I must say my memories are from the VX with the bad 02 sensor until just recently, and; since it was replaced the other day, the ride has changed drastically. It still is a little 'sensitive' but I reckon it all goes back to it being a lean burn motor.

I certainly wouldn't recommend trying to go all out racer with a D15Z1. Leave it to a non-lean burn engine. It'll last longer at least as a ricer, let alone performance gains. :D :p

kamesama980 08-29-2010 06:56 PM

Re: honda fit Question
 
yep, small engine=high revs.

as for adding gears, I wish all my cars had a T56-like 6th gear. Just about the only transmission that did it right. .5:1 oh heck yea

theholycow 08-30-2010 04:55 AM

Re: honda fit Question
 
Quote:

Originally Posted by add|ct (Post 154411)
I could get the car to 5th gear so much faster in the Si than in the VX. I wonder if its because of having more HP and torque? It rode as well, or better, in 5th at 30 MPH in the Si compared to 5th at 40 MPH in the VX.

That is mainly because of gears. The Si has very short gearing, like the fit. The VX has some of the tallest gearing that Honda has ever sold (the HF too).

Quote:

Originally Posted by kamesama980 (Post 154414)
as for adding gears, I wish all my cars had a T56-like 6th gear. Just about the only transmission that did it right. .5:1 oh heck yea

I feel the same way...although I guess you can get approximately the same result by putting in a taller axle ratio, as long as the difference between 1st and 6th is the same. My project has a .72:1 5th and with its tall rear end it's going to go 70mph at 1700 RPM. In fact I'm a bit worried about it being too tall, but I'll see once I get it on the road. Torque peak is at 2000RPM so I'm hoping it'll be ok.

add|ct 08-30-2010 09:21 AM

Re: honda fit Question
 
Sure, I figured the gears being taller were part of it, but was kinda of sickened by the Si. It being so much smoother with the response, comparable to what the VX has in 5th at 55, it had more in 5th gear at 30 MPH. :p I was offering to trade for the Si if they'd take my Stratus. :D

jmf 08-31-2010 05:14 PM

Re: honda fit Question
 
Is it possible to toss a D15Z1 into a Fit. The fit weights 400lbs more, maybe some of that is engine weight. Maybe save some weight with PS delete. Also the D15Z1 has 25 less HP than the Fit, but it would be nice to have a four door Vx.

thisisntjared 09-21-2010 05:22 PM

Re: honda fit Question
 
Quote:

Originally Posted by theholycow (Post 154423)
I feel the same way...although I guess you can get approximately the same result by putting in a taller axle ratio, as long as the difference between 1st and 6th is the same. My project has a .72:1 5th and with its tall rear end it's going to go 70mph at 1700 RPM. In fact I'm a bit worried about it being too tall, but I'll see once I get it on the road. Torque peak is at 2000RPM so I'm hoping it'll be ok.

it all depends on how fast you will be going. if you plan on going 80mph all the time you will be set! otherwise i would agree...

seeing how most car companies compare their 5speeds with the 6 you are probably right, but i also think the fit would benefit from having the gears a little closer together. 1st feels too short and 2nd feels like it bogs no matter how late you shift into it. the si never felt this way since it was much shorter. in the si 1st gear went to 40mph, then 2nd was right behind it going to 60 and 3 to 85ish. in the fit, 1st goes to 30, 2nd 55, and 3rd 80ish. i am sure the division of the actual ratios could be worked out into percentage drops in rpms. however the point is that on paper the si only goes few mph faster in each gear, but the real world results are profoundly different.

you probably could put a d15z1 in a fit, but i dont think you would accomplish much by it. the improvement in fuel economy would be marginal compared to the cost of the operation. there is a lot more that goes into the vx being amazing on fuel beyond the engine and transmission: factory tire size, as you said weight, creature comforts like power steering, the frontal area of the civic vs the fit, probably a more restrictive exhaust, etc. its not that any of these things make a huge impact on the fuel economy but it all adds up.

trollbait 09-22-2010 06:13 AM

Re: honda fit Question
 
Plus, state regulations might just make an engine swap moot anyway. In Pa, older model engines can't go into newer cars.

IndyFetch 09-22-2010 08:50 AM

Re: honda fit Question
 
Quote:

Originally Posted by add|ct (Post 154411)
The Fit seems to have a very short first gear and isn't as easy to be 'smooth' compared to Civics. I only drove a manual of a friends a couple of times, though.

I just now tried driving a '99 Civic Si of a friend today; comparing it to the '92 VX, I definitely could get into the feel of the Si easily. I could get the car to 5th gear so much faster in the Si than in the VX. I wonder if its because of having more HP and torque? It rode as well, or better, in 5th at 30 MPH in the Si compared to 5th at 40 MPH in the VX. I did like the ride comfort improvement to boot. The VX just wants to die compared to the Si if you try to drive it very easily. I'd imagine its because of going in/out of lean burn.

Though, I must say my memories are from the VX with the bad 02 sensor until just recently, and; since it was replaced the other day, the ride has changed drastically. It still is a little 'sensitive' but I reckon it all goes back to it being a lean burn motor.

I certainly wouldn't recommend trying to go all out racer with a D15Z1. Leave it to a non-lean burn engine. It'll last longer at least as a ricer, let alone performance gains. :D :p

I used to have a '99 Si. It had a 4.40:1 final drive, and was running 4400 rpm at 80 mph in 5th. My VX had a 3:25:1 final drive, and only turned about 2700 rpm at the same velocity.

Still, that (lightly modified) Si was the fastest car I drove until recently. I got pulled over running almost 140 in that car in 2005. Yet, it would still get 33-36 mpg (premium, of course) if you kept your foot out of it.


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