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

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 02-13-2010, 03:30 PM   #11 (permalink)
Master EcoModder
aerohead's Avatar
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 12,358
Thanks: 19,873
Thanked 6,200 Times in 3,825 Posts
Cd 0.55

Originally Posted by jmedia View Post
Hey all,
Loving the site so far for my escort.
But I have another love in my life that is basically a brick on wheels.
My 1989 Grand Wagoneer
She is gonna be my summer project, gonna swap a diesel and a 5 speed into her.
I am curious about working on the aerodynamics, but I know there is not much to work with. I am pretty confused on how to calculate the Cd of my vehicle.
And i was wondering if there is any kind of wind tunnel software I could use

jmedia,I have a CAR and DRIVER roadtest of the Grand Wagoneer.They published Cd 0.55 for that vehicle.
It's both the worst and best candidate for mods,because it could use it the most.
Look over the stickys here at the forum for mod ideas and potential benefits.
Also,look at modern JEEP products to compare where they went with design.
As far as CFD,whatever you use,it MUST create an accurate portrayal of the wake.This is your biggest challenge after cleaning up the front.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

Old 02-13-2010, 10:19 PM   #12 (permalink)
Join Date: Feb 2010
Location: San Diego, CA
Posts: 64

Skeeter - '89 Ford Escort LX
Thanks: 2
Thanked 1 Time in 1 Post
Holy crap haha that's a pretty high cd. Unfortunately i love the look of my vehicle. And I will have to lift it to put the diesel in it. If it's lifted, will an undertray(I'm not sure what they are called) help out? And I thought chopping the top like my pic and then placing a bed cover over it that was more gradual would help the turbulance behind the truck (even of it left me with a dinky bed)
  Reply With Quote
Old 02-15-2010, 12:10 PM   #13 (permalink)
Master EcoModder
Join Date: Mar 2009
Location: Northeast Ohio
Posts: 269

The Wife's Hot Rod - '09 Pontiac G8 GT
Last 3: 23.22 mpg (US)

Big Outback - '13 Subaru Outback 2.5i

Little Outback - '02 Subaru Impreza Outback Sport
Thanks: 0
Thanked 16 Times in 16 Posts
Sweet Jesus don't cut up a Waggy.

If you're going to lift it & put on bigger tires, use a tire dia. you can get non-flotation sizes in, then swap on the boggers for the trail. Mooneyes & removable wheel well skirts should help some for the street. You will want to remove them for the trail.

You can probably get "skid plates" for most of the underbody & cover the gaps with the material of your choice. You could make an undertray of lesser material, but if you're venturing off the beaten path you'll want the much thicker skid plates.

A Kamm extension (Tapered side panels & roof panel) will help as Jethro suggested. It will also give a clean straight edge for the air to seperate cleanly from. This is why most Crossovers, mini-vans & wagons have that lip on the rear roof.

Are you putting in a Cummins 4BT?

  Reply With Quote
Old 02-15-2010, 12:55 PM   #14 (permalink)
Join Date: Feb 2010
Location: San Diego, CA
Posts: 64

Skeeter - '89 Ford Escort LX
Thanks: 2
Thanked 1 Time in 1 Post
Haha ya it'd be hard for me to cut up my wag, just cause I'd be scared. I don't offroad tho so that stuff isn't an issue.
I wish I could swap a 4bt in but unfortunately it's illegal in CA so I'm looking for a gm 6.5 td

  Reply With Quote
Reply  Post New Thread

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mercedes aero engineer: Cd of .20 feasible in production cars within 10 yrs MetroMPG Aerodynamics 42 11-10-2015 05:26 PM
Toyota Camry Gen2 1989 Aero Recommendations? jasonck08 Aerodynamics 4 06-14-2010 08:42 AM
The Daq Civic aero project continues . . . slowly daqcivic Aerodynamics 34 02-09-2010 11:03 AM
CRV Cross Country Trip Aero - Temporary Aero Just for the Trip walteraxe Aerodynamics 26 01-05-2010 11:37 AM

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