Welcome to the North American Subaru Impreza Owners Club Saturday August 23, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Click here to visit TireRack
Brakes & Suspension Forum sponsored by The Tire Rack

Losing traction? Need new tires?
Click here to visit the NASIOC Upgrade Garage...
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Brakes, Steering & Suspension

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 06-09-2003, 10:13 PM   #1
BIGSKYWRX
Scooby Guru
 
Member#: 7958
Join Date: Jul 2001
Location: Plains of Eastern Montana
Vehicle:
09 GH B+

Default corner weights, left weigth %'s and how to improve

Let's talk cross weights first:

I dug up some corner weights from past threads and find that FHI did a pretty good job w/ cross weights (including driver)

example 1 (w/ ~ 200 lb driver)

front 991 964
rear 717 621

cross weights 51 and 49%, not bad- this is w/ no adjustments

example #2 (driver weight unknown)

front 986 943
rear 709 631

cross weights 50.5 and 49.5 %, not bad at all- I think this example was w/ adjustment

Looks pretty good from the factory and appears it would be easy to attain 50/50 cross weights w/ slight height adjustments, also interesting to note that the front rear % are close as well 59 % front/ 41% rear

Now lets look at left weight %'s- ideal would be 50/50, ride height changes will not change left weight %'s- only adding/removing/moving items will, obviously adding ballast wouldn't be the favorite route

example 1 is 51.9 left and 48.1% right

example 2 is 51.8 left and 48.2% right

Not too bad considering weight of driver is included, but how could we improve? Putting the oe battery (32lbs) in the right rear would improve things a bit

example 1 now is 50.9 and 49.1%

example 2 is also 50.9 and 49.1%, pretty good improvement by just moving the battery

It's probably actually a little lower than that as the weight is actually distributed across all four corners (obviously a lot more toward the right side when moving the battery to the right rear).

Any other ideas- lighter (after market) drivers seat would help, any other weight items that are left/right?

Big Sky
* Registered users of the site do not see these ads.
BIGSKYWRX is offline   Reply With Quote
Old 06-10-2003, 02:08 AM   #2
tdxflex
Scooby Specialist
 
Member#: 13634
Join Date: Dec 2001
Chapter/Region: NESIC
Location: Boston
Vehicle:
2002 WRX
WRB

Default

If you keep your windshield washer tank full, that's drivers side weight. the battery is huge, i relocated mine to the trunk and used an stinger sp800 (relabeled odyssey 925), 25lbs. The power wire weight is approx 0.40 lbs per foot for 1/0 gauge, 0.25 lbs per foot for 2 gauge, that's the info I got from knukonceptz.com.

The distance of wire from the engine bay to the trunk isn't that bad, but also keep that in mind when you're running the wire, most likely you'll go down the driver's side for simplicity. But you could run it on the passenger side (go across the engine bay along the firewall) instead to help your weight distribution even more.

Steering wheel airbag replacement, drivers side speakers, all I can think of right now.
tdxflex is offline   Reply With Quote
Old 06-10-2003, 10:28 AM   #3
BIGSKYWRX
Scooby Guru
 
Member#: 7958
Join Date: Jul 2001
Location: Plains of Eastern Montana
Vehicle:
09 GH B+

Default

Thanks. How did you mount your battery in the rear? Did you retain the oe battery mounting setup? Wouldn't have pics by chance? I'll have to look into the stinger battery- I'm guessing it's close to oe on cranking and cold cranking amps?

Big Sky
BIGSKYWRX is offline   Reply With Quote
Old 06-10-2003, 12:44 PM   #4
CTKAG
Scooby Specialist
 
Member#: 15001
Join Date: Feb 2002
Chapter/Region: NESIC
Location: Manchester CT or at any track
Vehicle:
STi V8 Spec C Power
NESIC TrackH0z # 10

Default

Good info - was thinking about putting my car on scales to see just that. I'm assuming that my car will be setup similarly (as far as weight %s). Rear cross seems high - was this with a full fuel tank or empty tank?

Probably could save a couple lbs of left side weight by selecting the lightest muffler can available.
CTKAG is offline   Reply With Quote
Old 06-10-2003, 01:11 PM   #5
tdxflex
Scooby Specialist
 
Member#: 13634
Join Date: Dec 2001
Chapter/Region: NESIC
Location: Boston
Vehicle:
2002 WRX
WRB

Default

Quote:
Originally posted by BIGSKYWRX
Thanks. How did you mount your battery in the rear? Did you retain the oe battery mounting setup? Wouldn't have pics by chance? I'll have to look into the stinger battery- I'm guessing it's close to oe on cranking and cold cranking amps?

Big Sky
I made a box for it out of mdf and used plumbing strap screwed in the bottom and just ran it to existing bolts for the time being. I still haven't figured out how I want everything back there so right now it's just up right behind the rear seats.

I actually never thought about how much weight offset there would be with the driver, my power wire is going down the drivers side, it'll take a lot of motivation for me to redo it. I've got some pics, they're pretty messy but I'll put them on my yahoo page to give you an idea. Things I would do different for weight distribution would be putting the distribution block on the pass side of the car and run a longer 4ga or 8ga power wire from the fuse box and along the firewall to the pass side, then from that distribution block run the 1/0 wire down the pass side paneling to the trunk.

Putting the main battery in the trunk is also good for theft protection, disable the trunk pop lever and when thieves pop the hood they'll have to work harder instead of just cutting the connection at the battery.

Specs on the battery are 380CCA below 32F, 50min reserve, and it's a gel cell. Got it for $80 on a car audio board.

Last edited by tdxflex; 06-10-2003 at 01:30 PM.
tdxflex is offline   Reply With Quote
Old 06-10-2003, 09:52 PM   #6
BIGSKYWRX
Scooby Guru
 
Member#: 7958
Join Date: Jul 2001
Location: Plains of Eastern Montana
Vehicle:
09 GH B+

Default

I'm pretty sure both examples were w/ ~ 1/2 tank.

tdxflex- thanks for the pics. I'm not much of an electrician, but I know one- maybe he can give me a hand.

I need to figure out a way to corner weight w/ the STi setup. If a guy could raise the corners w/ a temp shim, then you could permanately extend the height after removing the strut using the same thickness as the temp shim- we'll see.

Big Sky
BIGSKYWRX 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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Subaru Drive By Wire and How to Improve it williaty Normally Aspirated Powertrain 248 07-07-2014 02:09 PM
4EAT Horsepower/Torque Limits, and how to improve them. Andrew Transmission (AT/MT) & Driveline 79 10-09-2011 04:32 PM
how to improve low-end on auto WRX? 02WRXman Transmission (AT/MT) & Driveline 8 07-12-2002 09:14 PM
How to Improve the Headlights Range... carvinsnow Legacy Forum 45 02-12-2002 05:20 PM
Beteer, best Gas Mileage How to improve? emprezadent General Forum Archive 6 02-22-2001 06:36 PM


All times are GMT -4. The time now is 10:44 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.