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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 04-23-2008, 01:54 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Apr 2008
Location: Sheffield UK
Posts: 50
Thanks: 0
Thanked 0 Times in 0 Posts
Calibra good enough ?

Hey again all.
Have now set my sights on another project car ( instead than the triumph ).
A calibra 2.0 8v!! Stock cd = 0.26 , so pretty effecient.
However, would there be any mods i could do to improve this much ? The car comes with undertray etc.
Do you think i would get any decent gains ? Or would i be wasting time on this car as its allready at a " clean " state of tune ,aerodynamically speaking
-regards - Mark

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 04-23-2008, 02:03 PM   #2 (permalink)
EcoModding Lurker
 
Join Date: Apr 2008
Location: Sheffield UK
Posts: 50
Thanks: 0
Thanked 0 Times in 0 Posts



Any ideas ?
Ideas So far =
Better wheels
Thinner tires
1 Front wiper delete
1 mirror delete
rear wiper delete
antenna delete
lower ( to reduce frontal are + fill wheel arches more )
silicone any panel gaps.
fill door handles.
bottom grille block
.
Do you think this would help much?
Like get the cd to 0.24 ?
  Reply With Quote
Old 04-23-2008, 02:03 PM   #3 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,513

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.71 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
90 day: 60.16 mpg (US)
Thanks: 4,058
Thanked 6,957 Times in 3,602 Posts
Generally, it's harder to improve on a car with a lower Cd, because the low hanging fruit has already been picked.

FYI: Info & video - Opel Calibra - Cd 0.26

Despite that, there's probably still some improvement to be made:

- remove a side mirror or two
- potentially further grille blocking (though the 8v Calibra already has a reduced grille area)
- rear wheel skirts

... Have a look here for anything else that may apply from the List of aero mods you can do to your vehicle.
__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 04-23-2008, 02:05 PM   #4 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,513

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.71 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
90 day: 60.16 mpg (US)
Thanks: 4,058
Thanked 6,957 Times in 3,602 Posts
To me, those wheels look pretty optimised already.

I think it's reasonable to expect at least .24 with a mirror & rear wiper delete, plus further grille blocking (upper opening).

Also, I wonder just how much of an undertray there is. I bet it could be improved on.
__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 04-23-2008, 06:16 PM   #5 (permalink)
Master EcoModder
 
Join Date: Feb 2008
Location: belgium
Posts: 663

vectra a - '95 Opel Vectra GLS
90 day: 37.51 mpg (US)
Thanks: 14
Thanked 61 Times in 44 Posts
nice car!

i just bought a vectra a hatchback...on wich the calibra was based...it's "only" got a 0.29Cd...and a far less exiting, (but possibly more economic 1.6i engine) but i'm planning so mods like an undertray...

this video has an interesing fact about the calibra around 3:15

aparently the 16v versions had a much higher Cd... up to 0.29 because the upper grill was open....and it has wider tires, so blocking the grill would have a rather large effect...

also if the upper grill is already blocked you might want to fair over the opening at the outside, that will smooth things out further.

do you have a picture of the undertray? i've been looking all over the internet but i just can't find a single picture of the thing. i wonder if it would fit on my vec, or at least find out how it attaches so i could build something similar.
__________________
aer·o·dy·nam·ics: the science of passing gass

*i can coast for miles and miles and miles*
  Reply With Quote
Old 04-23-2008, 06:38 PM   #6 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,513

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.71 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
90 day: 60.16 mpg (US)
Thanks: 4,058
Thanked 6,957 Times in 3,602 Posts
Hi, lunarhighway. Welcome to the site
__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 04-23-2008, 06:43 PM   #7 (permalink)
ECO-Evolution
 
Lazarus's Avatar
 
Join Date: Nov 2007
Location: Central Texas
Posts: 1,482

Iron Horse (retired) - '97 Iron horse Intrepid

Ninja - '08 Kawasaki 250R
90 day: 76.23 mpg (US)
Thanks: 17
Thanked 44 Times in 33 Posts
Does any one have EPA numbers for it?

Welcome to the site Lunarhighway.
__________________
"Judge a person by their questions rather than their answers."

  Reply With Quote
Old 04-23-2008, 07:19 PM   #8 (permalink)
Master EcoModder
 
Join Date: Feb 2008
Location: belgium
Posts: 663

vectra a - '95 Opel Vectra GLS
90 day: 37.51 mpg (US)
Thanks: 14
Thanked 61 Times in 44 Posts
oops just noticed the video had already been posted... stupid me.

i just remembered another thing i might do to the vec. perhaps the calibra setup is better but the vectra only has small airdam extentions in front of the wheels and the suspention at the front of the bumper... perhaps adding these little flaps directly in front of the wheels that are quite common now would help. i started to notice them a few years ago and now they're everywhere. maybe at the time of the calibra and the vectra they haden't been invented, at least not in that form.... pretty easy retrofit so that might do some good

__________________
aer·o·dy·nam·ics: the science of passing gass

*i can coast for miles and miles and miles*
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Are hybrid SUVs a good or bad thing? SVOboy Hybrids 71 05-05-2017 03:24 PM
Info & video - Opel Calibra - Cd 0.26 MetroMPG Aerodynamics 24 08-20-2009 02:58 PM
At $8.27/gal. it's good to be eco Bearleener Introductions 20 04-02-2008 12:54 PM
'93 Honda Civic DX Coupe -- Good Project Car? RH77 The Lounge 5 04-01-2008 09:25 PM
Good Veggie Oil conversion!?!? bennelson EcoModding Central 12 02-14-2008 10:09 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com