GTO four corner air ride - LS1GTO.com Forums

Vendors


Go Back   LS1GTO.com Forums > GTO Tech > Suspension/Steering/Brakes

Reply
 
Thread Tools Rate Thread
Old 09-17-2017, 10:38 AM   #1
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
GTO four corner air ride

Looking at suspension options for fitting wider tires and not knowing exactly what height I wanted led to my air suspension decision. Having a set up I could adjust at the push of a button sounded like fun.

Major components:
Rear bags are Slam Specialties SS-6
Front bags are UAS Aero Sport
5 gallon 5 port AirMaxxx air tank
4 corner AirMaxxx V2 manifold valve
Twin Viair 350C compressors
The controller is Arduino based
The interface is an app on my Android phone (MIT App Inventor2)
Shocks are Koni adjustable

Attached Thumbnails
Click image for larger version

Name:	Rear_low.jpg
Views:	248
Size:	152.7 KB
ID:	469554   Click image for larger version

Name:	Rear_high.jpg
Views:	241
Size:	136.7 KB
ID:	469562   Click image for larger version

Name:	05_MBM_GTO_bagged2.jpg
Views:	942
Size:	350.0 KB
ID:	469570  
__________________

2005 MBM 6spd Single front mount GT45 turbo. Kept A/C, didn't move the battery and it has a real air filter.
  Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 09-17-2017, 10:44 AM   #2
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Starting at the back

Referencing what GTOguy531 did, but not liking the big hole in the floor, I started with some universal airbag axle brackets. The spring perches had to be removed from the chassis and the swing arm. After positioning the upper mount on the body, I made a little fixture representing a fully compressed bag to position the lower bracket. This set-up left room for the air fitting at the top of the bag (stationary) that I was able to elbow up into the trunk with a small hole and grommet for the line. This still gave me plenty of travel and the smaller SS-6 bags allowed more room for tires and a slightly firmer ride. They are still only at 50psi for normal ride height. The airlines come up into the trunk on either side of the fuel tank up against the forward passenger bulkhead.

Attached Thumbnails
Click image for larger version

Name:	Mini-tub_air_bag.jpg
Views:	857
Size:	360.4 KB
ID:	469578   Click image for larger version

Name:	lower Airbag mount.jpg
Views:	272
Size:	197.5 KB
ID:	469586   Click image for larger version

Name:	Upper spring perch remove.jpg
Views:	216
Size:	227.5 KB
ID:	469594   Click image for larger version

Name:	Upper Airbag mount.jpg
Views:	206
Size:	218.2 KB
ID:	469602  

Last edited by ACCLR8N; 09-17-2017 at 10:47 AM.
  Reply With Quote Quick reply to this message
Old 09-17-2017, 10:53 AM   #3
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Trunk

Goal was to keep as much of our minuscule trunk space available as possible. Didn’t want to give up the spare either. This 5 gallon tank was my best compromise for largest capacity and least impact on cargo space. It barely holds enough to run the bags up to my high service height setting from drive height if it’s full. In practice, to get to high usually involves some compressor run time and waiting. Brackets were welded to the fuel tank cage to mount the tank with required pass through holes in the trim cover. Pressure sensor and switch were both remote mounted on an airline with a T to hide them off to the side.

Compressor(s) are plunked down off to the side in the open for cooling.
Manifold is tucked in above driver’s wheel well next fuel tank while allowing access to shock adjuster.

Controller and relay box are behind driver’s side bulkhead above factory rear amp. The USB programming port is positioned at the rear edge of the bulkhead where it can be readily accessed.

Attached Thumbnails
Click image for larger version

Name:	Air_Tank.jpg
Views:	785
Size:	226.1 KB
ID:	469610   Click image for larger version

Name:	Tank_mount.jpg
Views:	164
Size:	429.9 KB
ID:	469618   Click image for larger version

Name:	Manifold.jpg
Views:	197
Size:	243.5 KB
ID:	469626  
  Reply With Quote Quick reply to this message
 
Old 09-17-2017, 11:00 AM   #4
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Front struts Plan A

Plan A was modifying a set of GTO struts replacing the spring with an airbag. GGGGOAT hooked me up with a pair of used strut assemblies to begin modifying. I was hoping to be able to swap in airstruts for the old struts and be done. Once installed, they only provided ¾” of compression travel from drive height. Minimum requirement for airbags is around 1.5” with 2” preferred. They were pretty.

Airlines were run through the passenger compartment under the passenger rocker molding. The unused hole in the firewall had to be enlarged to accommodate a grommet for battery line, two front airlines, fuel pressure wires and WBO2 wires. An aluminum line passes into the wheel wells through the fixturing holes behind the strut tower.

Attached Thumbnails
Click image for larger version

Name:	Air_struts_wide.jpg
Views:	799
Size:	246.2 KB
ID:	469634   Click image for larger version

Name:	Air_strut_compare.jpg
Views:	186
Size:	306.9 KB
ID:	469642   Click image for larger version

Name:	Air_strut_upper_mount.jpg
Views:	179
Size:	281.8 KB
ID:	469650  

Last edited by ACCLR8N; 09-17-2017 at 11:14 AM.
  Reply With Quote Quick reply to this message
Old 09-17-2017, 11:06 AM   #5
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Front Struts Plan B

I needed to get the top of the airbag higher into the car or the bottom lower. 1994-2004 Mustang Caster/Camber plates have the same M16 strut top mount and eliminate the large block of rubber below the strut tower. The cup on the underside of the strut tower had to be removed and the flange around the strut pass-through had to be hammered down. The Mustang mounts come with various spacers and bushings. A new bushing was turned to space the air bag top plate down from the new strut mount hardware. My previous design had a Delrin bushing for centering the upper airbag mounting plate on the Koni strut shaft. The new spacer bushing was cupped to capture the Delrin bushing that now supports the corner weight. If the Delrin fails, the steel bushing will simply go metal to metal with the airbag plate.

I had a few millimeters the lower plate could have come down towards the tire, but with nearly 2” of compression travel it wasn’t worth the effort.

Attached Thumbnails
Click image for larger version

Name:	94-04_M_camber_plate_bottom.jpg
Views:	639
Size:	200.3 KB
ID:	469658   Click image for larger version

Name:	94-04_M_camber_plate_side.jpg
Views:	188
Size:	269.3 KB
ID:	469666   Click image for larger version

Name:	Adapter_bushing_top.jpg
Views:	179
Size:	87.9 KB
ID:	469674   Click image for larger version

Name:	Front_airline.jpg
Views:	179
Size:	276.4 KB
ID:	469682  

Last edited by ACCLR8N; 09-21-2017 at 05:40 AM.
  Reply With Quote Quick reply to this message
Old 09-17-2017, 11:13 AM   #6
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Limit strap

The Koni front struts have more travel than the air bags. Limit straps were added to prevent the bags from being damaged by over extension in the event somebody lifted the front end off the ground.
Attached Thumbnails
Click image for larger version

Name:	Limit_Strap.jpg
Views:	143
Size:	252.4 KB
ID:	469690   Click image for larger version

Name:	Limit_Strap_mount.jpg
Views:	128
Size:	354.1 KB
ID:	469698  
  Reply With Quote Quick reply to this message
Old 09-17-2017, 02:33 PM   #7
Blue Dream
Registered User
 
Blue Dream's Avatar
 
2006 GTO Owner

Join Date: Sep 2015
Location: By the sea, Tx
Posts: 686
Premium Member


Offline
Mad props to you for making the system work where and when you wanted it to. I'm very impressed.
__________________
"There are really just 5 simple lessons to life: Be honest, work hard, have fun, be grateful and pay it forward."
Bruce Halle RIP

1 of 101, enough said
  Reply With Quote Quick reply to this message
Old 09-17-2017, 05:20 PM   #8
llirremmada
Premium Member
 
llirremmada's Avatar
 
2006 GTO Owner

Join Date: Oct 2012
Location: mississippi
Posts: 376
Premium Member


Offline
How comfortable is the ride now? Also how does it handle around corners? Awsome work! It looks like a very clean Install.
__________________
  Reply With Quote Quick reply to this message
Old 09-18-2017, 09:06 AM   #9
WOODWARDSGTO
WOODWARDSGTO
 
2006 GTO Owner

Join Date: Oct 2008
Location: OAKLAND COUNTY MICH.
Posts: 459


Offline
Nice job looks great.
  Reply With Quote Quick reply to this message
Old 09-18-2017, 09:21 AM   #10
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Thank you

Quote:
Originally Posted by llirremmada...View Post
How comfortable is the ride now? Also how does it handle around corners? Awsome work! It looks like a very clean Install.


The ride quality has greatly improved. Despite my previous struts having less than 6K miles since new bushings and bearings, I was surprised by how much noise went away with the new setup. The rattle and banging over our bad Michigan roads is gone. Getting rid of that big block of rubber that quickly takes a set is worth the effort even if you stay with coil springs. As for corning, I'll have to pay more attention when I drive it next and push it. Can't say I noticed any difference in the way it corners driving back and forth to work last week.
  Reply With Quote Quick reply to this message
Old 09-18-2017, 11:03 AM   #11
JeffM
Registered User
 
JeffM's Avatar
 
2006 GTO Owner

Join Date: Jul 2014
Location: Jacksonville, FL
Posts: 221


Offline
With the compressor and the air tank, you should consider a train horn!
__________________
2006, M6, LS2 Bottom, L92 Heads, 236/240 590/590 112 Cam, LS3 Intake, Ported Throttle body, XAIR, Kooks Long tube, Cat less Flowmaster, B&M Short Shifter, Monster Level 2, DSS 1 piece, 3.90s, 439 whp/397 trq
  Reply With Quote Quick reply to this message
Old 09-18-2017, 11:38 AM   #12
zech912
Wol Gemut
 
zech912's Avatar
 
2006 GTO Owner

Join Date: Feb 2007
Location: Phoenix, Az.
Posts: 3,204
Premium Member


Offline
awesome work.
__________________

“Others have caught on, but they haven't caught up." ...1968 GTO ad
  Reply With Quote Quick reply to this message
Old 09-18-2017, 12:18 PM   #13
ATITOOD
Registered User
 

Join Date: Apr 2010
Location: OHIO
Posts: 102


Offline
Very nice
  Reply With Quote Quick reply to this message
Old 09-18-2017, 04:52 PM   #14
Glynn
Pontiac Fanboy
 
Glynn's Avatar
 
2006 GTO Owner

Join Date: Oct 2011
Location: Baltimore
Posts: 897


Offline
Besides the cool suspension setup and great looking Monaro (very nice), what happened with the tires?
You mentioned going wider, were you able to?
__________________
2018 M6 Mazda3 GT Hatch
Zoom-Zoom DD

2015 A6 SS w/:
Holden Bits|Warranty-Friendly Trinkets
Baby Mobile

2006 M6 GTO w/:
|Vararam|Ported TB/Intake|Kooks LTs|Magnaflow 2.5"|Pedders XA Supercars|Hotchkis Sways|4P CTS-V|LT1-S Twin|Billet Pro|G8 GT 19s|HINSON E&T Mounts|Whiteline, SuperPro, and Pedders Bushings|
John Doe's old ride. My take on a "1LE" GTO

1997 Grand Prix GT w/:
Sold
  Reply With Quote Quick reply to this message
Old 09-18-2017, 05:38 PM   #15
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Quote:
Originally Posted by JeffM...View Post
With the compressor and the air tank, you should consider a train horn!

No. I don't use the horn that's in it

Quote:
Originally Posted by zech912...View Post
awesome work.

Quote:
Originally Posted by ATITOOD...View Post
Very nice

Thank you

Quote:
Originally Posted by Glynn...View Post
Besides the cool suspension setup and great looking Monaro (very nice), what happened with the tires?
You mentioned going wider, were you able to?

I went 285s. Widened 18" wheels, mini-tub, notched control arms, shock spacers and didn't touch the fender lips. I am able to lower it down over these tires with a comfortable clearance margin that I'm sure somebody else would say a 315 would fit.
  Reply With Quote Quick reply to this message
Old 09-19-2017, 04:02 AM   #16
GGGGOAT
CCGTO
 
GGGGOAT's Avatar
 
2006 GTO Owner

Join Date: Feb 2010
Location: Severn, MD
Posts: 1,013
Premium Member


Offline
Man, if I knew were going to ruin a good pair of struts.... JK!!!

VERY nice work! Car looks good! When can I send you mine to do?
__________________
'06 GTO (M6) PBM w/ Red Interior, (1 of 417)
403 ci, N/A
tuned by a good friend
  Reply With Quote Quick reply to this message
Old 09-21-2017, 05:24 AM   #17
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Quote:
Originally Posted by GGGGOAT...View Post
VERY nice work! Car looks good! When can I send you mine to do?

Thanks again for your help. Even if you took the drive train and interior out, postage is going to be a problem.
  Reply With Quote Quick reply to this message
Old 09-21-2017, 05:35 AM   #18
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Strut brace notched

The final delay was the realization the strut brace wasn't going to fit under the caster plates without some changes. On the plus side, it is now tied into the upper strut mount and acts as the spacer.

A chassis shop recently released a new fixed top mount with a sperical bearing to replace the rubber block for the GTO. Would have gone that route had it come out a couple weeks sooner. In there promo pictures, the strut brace is absent so I expect it requires similar clearancing.

Attached Thumbnails
Click image for larger version

Name:	Brace_notched.jpg
Views:	599
Size:	268.0 KB
ID:	469930   Click image for larger version

Name:	Brace_third_att.jpg
Views:	133
Size:	289.6 KB
ID:	469938   Click image for larger version

Name:	Camber_plates_brace.jpg
Views:	149
Size:	294.8 KB
ID:	469946  
  Reply With Quote Quick reply to this message
Old 09-22-2017, 08:52 AM   #19
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Quote:
Originally Posted by llirremmada...View Post
Also how does it handle around corners?

This morning I got pretty aggressive on the curves and corners. I'm not able to quantify how much better it corners. There seems to be less body roll and it has improved poise corning on uneven pavement. My guess is a lot of that is the new Konis and the spherical bearing at the top. It is clear there hasn't been any negative impact. I don't get that bottoming out feeling anymore when I sloppily toss it into a right turn intersection.
  Reply With Quote Quick reply to this message
Old 09-23-2017, 02:28 PM   #20
Grits 'N Gravy
Registered User
 
2006 GTO Owner

Join Date: Jul 2013
Location: United States
Posts: 35


Offline
Front struts came out very nice. Do you have any side shots of the car?
  Reply With Quote Quick reply to this message
Old 09-24-2017, 06:38 AM   #21
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
I have this one at my ride height. What did you want to see?

Attached Thumbnails
Click image for larger version

Name:	05_MBM_GTO_bagged.jpg
Views:	513
Size:	336.8 KB
ID:	470090  
  Reply With Quote Quick reply to this message
Old 11-05-2017, 06:40 AM   #22
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Update: Camber plate problem

The 1/4" camber plates started bending on me. I assume they were mild steel (1008-1010). To fix it, the adjustment holes were shortened, more material added around the slots and the plates were cut out of 4130 chromoly. For good measure some weld on reinforcements doubled the thickness across where the originals bent.

Attached Thumbnails
Click image for larger version

Name:	Bent_camber.jpg
Views:	441
Size:	107.5 KB
ID:	472658   Click image for larger version

Name:	Camber_plate_4130.jpg
Views:	92
Size:	254.0 KB
ID:	472666  
  Reply With Quote Quick reply to this message
Old 05-22-2018, 05:20 PM   #23
Double C
Registered User
 
Double C's Avatar
 
2005 GTO Owner

Join Date: Oct 2005
Location: Loma Linda, CA
Posts: 331


Offline
Wow! What a nice setup sir. Wish I had the skills..
  Reply With Quote Quick reply to this message
Old 05-23-2018, 09:01 AM   #24
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Quote:
Originally Posted by Double C...View Post
Wow! What a nice setup sir. Wish I had the skills..

Thank you. The new 4130 camber plates have been holding up.

Edit: And the Delrin piece the car sits on is holding up fine. I had it apart two nights ago to swap out limit straps.

Last edited by ACCLR8N; 05-23-2018 at 09:07 AM.
  Reply With Quote Quick reply to this message
Old 04-14-2019, 10:32 PM   #25
The Black Mongoose
donde esta la biblioteca
 
2006 GTO Owner

Join Date: Nov 2012
Location: Ft. Lauderdale FL
Posts: 210
Premium Member


Offline
I think someone (ACCLR8N) should start build kits for this....just sayin. or sell the plans to air ride and make a boat load of money
__________________
2006 m6 phantom black GTO (RIP):
kooks long tube headers
kooks cat-less mids
bassani cat back
ripstick
lingenfelter intake
BMR drag Bags (removed)
BC Coilovers

2006 M6 Phantom Black (Mongoose 2.0)
Kooks LT headers
Kooks off-road cat less mid pipes
Bassani exhaust
rip shift
AEM intake
QTP remote cutouts
Hinson motor mounts and trans mount
hp tune
NGage dash mount
  Reply With Quote Quick reply to this message
Old 04-15-2019, 06:14 AM   #26
ACCLR8N
Chief CAD monkey
 
ACCLR8N's Avatar
 
2005 GTO Owner

Join Date: Aug 2005
Location: Davisburg, MI
Posts: 703


Offline
Thanks for your appreciation. There are a couple companies out there that will build a kit for the GTO. Unlike either of them, I will share any information or details to anybody interested. My set up involved a lot of cutting and welding. There is no going back.
  Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the LS1GTO.com Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Location
Where you live (must be accurate to IP location, if wrong you may be permanently banned)
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may post new threads
You may 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


All times are GMT -8. The time now is 02:36 AM.




Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.