Gearing Automatics to get better FE - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 04-27-2007, 09:56 AM   #1
Registered Member
 
Join Date: Apr 2007
Posts: 44
Country: United States
Gearing Automatics to get better FE

Is it possible to change the gears to your automatic transmission to obtain a better MPG?

I know with the 03 Camrys there is a 4 speed automatic, with the 05, which is the same body style, they have the 5 speed automatics which gets better FC by an extra 2 MPG. So I was thinking. HOw hard is it to change the gears on your car to get better FC. Also would it be possible to have 5 speed automatic instead of a 4 speed automatic??
__________________

__________________
My Gas Saver:
1994 Honda Civic DX Automatic
2003 Toyota Camry SE

Non Gas Saver:
1994 Toyota Supra Twin Turbo
suprapsu is offline   Reply With Quote
Old 04-27-2007, 01:07 PM   #2
*shrug*
 
Join Date: Sep 2005
Posts: 6,195
Country: United States
You should compare the transmissions and engines and things to see what the difference is, it might be that you can swap them, but it's hard to say with such a new car. I would trade it in for something stick,
__________________

SVOboy is offline   Reply With Quote
Old 04-27-2007, 02:24 PM   #3
Registered Member
 
omgwtfbyobbq's Avatar
 
Join Date: Jul 2006
Posts: 1,516
Country: United States
Um... It's a PITA, but doable in a couple/few days. I want to say that the 5sp auto would bolt up, since it has the best OD ratio and in the past, Toyota has had manuals that couldbolt to both the four and six, but I'm not sure. It'll cost at least ~$500-1000, maybe more, and take many hours.
__________________
Quote:
Originally Posted by FormulaTwo
I think if i could get that type of FE i would have no problem driving a dildo shaped car.
omgwtfbyobbq is offline   Reply With Quote
Old 04-30-2007, 08:25 PM   #4
Registered Member
 
bzipitidoo's Avatar
 
Join Date: Jan 2007
Posts: 112
Country: United States
if it's rear wheel drive, change the differential

Easier to change the gear in that than fool with the tranny.
bzipitidoo is offline   Reply With Quote
Old 05-02-2007, 09:11 AM   #5
Registered Member
 
brucepick's Avatar
 
Join Date: Feb 2007
Posts: 722
Country: United States
Location: Connecticut
I think the general interest in FE is going to increase the demand for standard trans cars.

Might take a while before we see any effects of this in the marketplace (like higher prices or less availability of stick shift cars) because the reduced prices for sticks is kind of hard-coded into the "blue book" system.
__________________
Currently getting +/- 50 mpg in fall weather. EPA is 31/39 so not too shabby. WAI, fuel cutoff switch, full belly pan, smooth wheel covers.

Now driving '97 Civic HX; tires ~ 50 psi. '89 Volvo 240 = semi-retired.
brucepick is offline   Reply With Quote
Old 05-02-2007, 11:23 AM   #6
Registered Member
 
GasSavers_Red's Avatar
 
Join Date: Nov 2006
Posts: 513
Country: United States
Send a message via MSN to GasSavers_Red
I might increase demand, but how many people on the road know how to drive a stick?
__________________
GasSavers_Red is offline   Reply With Quote
Old 05-02-2007, 11:30 AM   #7
Registered Member
 
brucepick's Avatar
 
Join Date: Feb 2007
Posts: 722
Country: United States
Location: Connecticut
They're going to want to learn to drive stick.
Some of them anyway.

Plenty "closet" stick drivers too, I'll bet.
Three drivers of four in our household can drive stick but are now driving auto.
# four thinks he can (22 yrs old), also on auto now, so that's 4 out of 4 really.
With mpg becoming more important I suspect at least 2-3 of the 4 will become stick drivers with our next cars.
__________________
Currently getting +/- 50 mpg in fall weather. EPA is 31/39 so not too shabby. WAI, fuel cutoff switch, full belly pan, smooth wheel covers.

Now driving '97 Civic HX; tires ~ 50 psi. '89 Volvo 240 = semi-retired.
brucepick is offline   Reply With Quote
Old 05-02-2007, 11:44 AM   #8
Registered Member
 
Join Date: Oct 2005
Posts: 1,978
Country: United States
Automatic (for now)

The 'Teg is an auto, which isn't by choice, but by default.

While the auto remains to survive with the EOC and traffic-light stop/start (about 20K miles so far), then into 'D', once it goes, a manual swap will be considered, but I'm not going to kill it intentionally...BUT

The auto allows a lower RPM at 55-60 mph than the manual version (with the TC lockup and final drive)....EVEN STILL

The same model in 5-speed form yields better overall mileage, and the ability to bump-start and no losses in swashbuckling through the ATF is another set of FE benefits...HOWEVER

Newer vehicles have an auto final drive that has a better EPA FE -- which I think the U.S. favors. People who actually prefer a true manual transmission is rare in the U.S. and Canada. So, automakers are making the autos more efficient (on paper).

I miss driving a standard-shift every day. The problem is that the TC engagement is intermittent with EOC (fuzzy logic / hill logic-control is confused by the EOC) and I drive quite a bit of highway speeds. When it goes, sign me up for a swap, but until then, I'm saving the $$$ on the mod.

RH77
__________________
rh77 is offline   Reply With Quote
Old 05-02-2007, 12:11 PM   #9
Registered Member
 
Join Date: Mar 2007
Posts: 125
Country: United States
I don't feel so bad having an AT Yaris...it is rated by the epa at 39 Hwy, and the manual is 40, and for city driving the rating is the same: 34 mpg...but with the help of a ScanGaugeII I routinely get 44 mpg out of my auto-tranny...granted I might get a tad more if I had a stick, but I doubt by much...with proper gas pedel control one can often "manually" shift, so this issue seems moot to me...these newer electronically controlled auto trannies are getting better and better, and with some cars they are rated even better then a manual version...
MorningGaser is offline   Reply With Quote
Old 05-02-2007, 12:38 PM   #10
Registered Member
 
Join Date: Mar 2007
Posts: 1,138
Country: United States
They (automatics) are sometimes rated better on the EPA test, but I don't think that it holds up in the real world. Over on a Honda Element group that I am in, every time that someone complains about their gas mileage, they are driving a automatic... That is anecdotal, I know.
__________________

__________________
Bill in Houston is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
My friend just bought a Jetta TDI Matt Timion General Discussion (Off-Topic) 16 06-08-2008 03:10 PM
GasSavers.org Stickers Matt Timion Fuelly Web Support and Community News 7 10-12-2006 04:48 PM
Roflmao Compaq888 General Discussion (Off-Topic) 1 06-10-2006 07:35 AM
FFI GasSavers_MPGmaker Introduce Yourself - New member Welcome 39 05-30-2006 04:31 PM
Where to get parts? What parts do we need? Matt Timion Electric and Solar powered 11 09-19-2005 09:37 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 09:15 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.