Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-06-2017, 08:16 AM   #1 (permalink)
EcoModding Lurker
 
Join Date: Jan 2016
Location: Detroit MI
Posts: 79

Blue Berry - '90 Geo Metro XFi
Thanks: 23
Thanked 18 Times in 14 Posts
Turtle The better car?

Hi guys, long time lurker/partial ecomodder. I currently drive a 92 Ford Festiva GL Sport, 5 speed, air con, no power steering ect. Now I drive 98% city and that 2% HWY. That 2% HWY is usually to the Walmart run because I cant stand the local Walmart. Ive noticed that hypermiling this little car i got the very best of 39.5 mpg. But driving around town and driving normal (not flooring it or anything) I'm getting a consistent 28 mpg. My question is, I've been considering a Civic VX or a Civic HX. I see all the time people say, 40 mpg normal city driving all the time. Is this really true? I know my Festiva weighs 1700 lbs but I also know about the vtec-e engines which improve economy. Should i look at selling my Festiva to buy a VX or HX? If so which of the 2 is better? I like the practicality of hatchbacks which is why I own a Festiva so not really into the coupe HX but if the real world mpg is that much better I would do it. Also, why is it that in normal driving I cant crack 30 mpg? Car has 72k original miles, new plugs, stock 12 inch alloys with 45psi inflated tires, top and bottom grill blocks, and i hardly ever pass 2,500 rpm.... You guys are the experts so I want to hear what you guys say. Thanks in advanced and hope to hear from ya soon!

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 02-06-2017, 08:40 AM   #2 (permalink)
Master EcoModder
 
Ecky's Avatar
 
Join Date: Dec 2011
Location: Vermont
Posts: 4,377

Gaptooth (retired) - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 54.26 mpg (US)

Such Fit - '07 Honda Fit Sport
90 day: 41.27 mpg (US)

Connect - '15 Ford Transit Connect XL
90 day: 21.26 mpg (US)

K-sight - '00 Honda K-sight
Team Honda
90 day: 43.14 mpg (US)

Aerocivic - '92 Honda Civic CX
90 day: 64.49 mpg (US)
Thanks: 2,205
Thanked 1,970 Times in 1,241 Posts
The main advantages of the VX and HX are that they have lean burn and tall gearing, which help a ton on the highway. Most Hondas with small engines can get 40+ in town, but these are 50+ or even 60+ cars on the highway.

To figure out why you can't get better economy, you need to consider where all of that energy is going. When you're rolling down the road, your engine can convert gasoline into usable mechanical energy at a certain efficiency, and the rest is lost as heat. Your drivetrain will turn a certain amount into heat as friction. Your brakes will turn some into heat as friction. Your tires will turn some into heat. Air resistance will turn forward motion into kinetic energy in the form of turbulence.

Mostly, you can get your economy up by reducing tire drag (low rolling resistance, high pressure), improving aero for highway speed driving (grille block, belly pan), reduce weight for city driving (takes less energy to get it up to speed, which you'll eventually waste in the form of heat in your brakes), and consider your routes very carefully so you're not having to accelerate and brake a lot.

Extended idling also takes its toll.
  Reply With Quote
Old 02-06-2017, 09:34 AM   #3 (permalink)
EcoModding Lurker
 
Join Date: Jan 2016
Location: Detroit MI
Posts: 79

Blue Berry - '90 Geo Metro XFi
Thanks: 23
Thanked 18 Times in 14 Posts
Ah, I see. My thing is, i hardly ever do HWY driving. Once a month maybe. Whats silly is, on the festiva forums guys are saying they get 30 mpg in their 1.8 dohc swap and im running a measly 1.3 with relatively low miles and cant crack 30 mpg. Car runs great, tight as a drum, like a top, and still even with easy driving 28 mpg is all i get. With engine off coasting and such and I can get passed the 30 mpg but why is it that others dont have to go to that extent and still get better mpg than me? I owened a 92 civic LX that was stock but had an HX trans and i think it was horrible. I did all city driving with it and could only manage 18 mpg with it. Tune up was fresh, o2 sensors ect. I think its the fact that my drive to work is 10 mins and back. So the car doesnt warm up enough and still runs in closed loop. Now I have also considered the fact that maybe vtec-e wont help me either because vtec-e engines need to warm up before running into lean mode from what i remember. Im in a bit of a pickle here...
  Reply With Quote
Old 02-06-2017, 10:04 AM   #4 (permalink)
EcoModding Lurker
 
Join Date: Jan 2016
Location: Detroit MI
Posts: 79

Blue Berry - '90 Geo Metro XFi
Thanks: 23
Thanked 18 Times in 14 Posts
Btw, I calculate my mpg by how many miles driven divided by the galons it took to fill the tank up. No gadgetry here to tell instant mpg. That imho is what i consider real world mpg.
  Reply With Quote
Old 02-06-2017, 10:23 AM   #5 (permalink)
In the fasting lane
 
RedDevil's Avatar
 
Join Date: Dec 2012
Location: Nieuwegein, the Netherlands
Posts: 3,885

Red Devil - '11 Honda Insight Elegance
Team Honda
90 day: 49.75 mpg (US)

It - '09 Hyundai I10 Active Cool
Team Hyundai
90 day: 31.45 mpg (US)
Thanks: 1,629
Thanked 2,153 Times in 1,389 Posts
10 minute trips in the city!
That's what my I10 does too, in the hands of my caring but not very ecodriving minded wife.
Anything beyond 30 mpg is sheer utopia.
__________________
2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.17 Gmeter or 0.1 Mmile.



Investors woes:
"In hindsight, I should have placed a bet on the horse that won the race"
"In hindsight, I should have bet more on that horse"
  Reply With Quote
The Following User Says Thank You to RedDevil For This Useful Post:
willie@eco (02-06-2017)
Old 02-06-2017, 10:26 AM   #6 (permalink)
Eco-ventor
 
jakobnev's Avatar
 
Join Date: Oct 2010
Location: sweden
Posts: 1,506

Princess - '92 Mazda MX-3 GS
House of Tudor
Team Mazda
90 day: 53.54 mpg (US)

Shirubāarō (*ω`*) - '05 Toyota Prius Executive
Team Toyota
90 day: 54.88 mpg (US)
Thanks: 64
Thanked 611 Times in 386 Posts
Send a message via MSN to jakobnev
Seems that the problem is the short trips, not the car.


Is it carburated?
__________________




2016: 128.75L for 1875.00km => 6.87L/100km (34.3MPG US)
2017: 209.14L for 4244.00km => 4.93L/100km (47.7MPG US)
  Reply With Quote
The Following 3 Users Say Thank You to jakobnev For This Useful Post:
fusion210 (02-11-2017), mcrews (02-08-2017), willie@eco (02-06-2017)
Old 02-06-2017, 10:42 AM   #7 (permalink)
ScanGauge <3
 
ThermionicScott's Avatar
 
Join Date: Dec 2016
Location: CID
Posts: 365

Winter Sacrifice - '96 Subaru Outback
Subaru
90 day: 22.4 mpg (US)
Thanks: 215
Thanked 129 Times in 91 Posts
Quote:
Originally Posted by jakobnev View Post
Seems that the problem is the short trips, not the car.
+1!

willie, do you have a block heater for your car? Having one of those warm up your engine every morning might help a lot with those short trips.

P.S. This may not be super-relevant, but what oil viscosity are you using? You may be able to get away with something that is thinner than spec just because you're almost never getting it up to operating temperature anyway.
__________________



Best tank (so far): 32 MPG

Last edited by ThermionicScott; 02-06-2017 at 11:01 AM..
  Reply With Quote
Old 02-06-2017, 11:04 AM   #8 (permalink)
EcoModding Lurker
 
Join Date: Jan 2016
Location: Detroit MI
Posts: 79

Blue Berry - '90 Geo Metro XFi
Thanks: 23
Thanked 18 Times in 14 Posts
Quote:
Originally Posted by jakobnev View Post
Seems that the problem is the short trips, not the car.


Is it carburated?
Fuel injection. And yes i think that might be my issue...
  Reply With Quote
Old 02-06-2017, 11:05 AM   #9 (permalink)
EcoModding Lurker
 
Join Date: Jan 2016
Location: Detroit MI
Posts: 79

Blue Berry - '90 Geo Metro XFi
Thanks: 23
Thanked 18 Times in 14 Posts
Quote:
Originally Posted by ThermionicScott View Post
+1!

willie, do you have a block heater for your car? Having one of those warm up your engine every morning might help a lot with those short trips.

P.S. This may not be super-relevant, but what oil viscosity are you using? You may be able to get away with something that is thinner than spec just because you're almost never getting it up to operating temperature anyway.
Hmmm.. interesting idea. Haven't thought about a block heater... hmm... and 10w-40. I think that is too thick as well now that you mentioned that. What shouod I run? 0w-20?
  Reply With Quote
Old 02-06-2017, 11:11 AM   #10 (permalink)
ScanGauge <3
 
ThermionicScott's Avatar
 
Join Date: Dec 2016
Location: CID
Posts: 365

Winter Sacrifice - '96 Subaru Outback
Subaru
90 day: 22.4 mpg (US)
Thanks: 215
Thanked 129 Times in 91 Posts
10W40, oh god.

I did a little Googling, and 5W30 is what Ford recommended for your car: http://www.revbase.com/BBBMotor/TSb/...adPdf?id=44867

Since you say the car is still in really good running shape, I'd put in something no thicker than 5W30 at the next change, and maybe even thinner. (My Subaru manual calls for 5W30 and I use 0W30 for its better flow at cold temperatures.)

__________________



Best tank (so far): 32 MPG

Last edited by ThermionicScott; 02-06-2017 at 11:16 AM..
  Reply With Quote
The Following User Says Thank You to ThermionicScott For This Useful Post:
Xist (02-08-2017)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com