...

Go Back   Lateral-g Forums > Lateral-G Open Discussions > Project Updates
User Name
Password



Reply
 
Thread Tools Display Modes
  #971  
Old 01-20-2020, 07:34 PM
RT_66_Pro_Touring RT_66_Pro_Touring is offline
Member
 
Join Date: Oct 2016
Location: Oklahoma
Posts: 51
Thanks: 3
Thanked 7 Times in 7 Posts
Default

Quote:
Originally Posted by SSLance View Post
Last summer during our "off season" I made some significant changes to Barney, adding EFI to the SBC under the hood and making big changes to the rear suspension spring and bar rates. Both changes were meant to make the car not only more competitive on track, but also to make it more street friendly off the track.
If I have been tracking your progression right, you were running a significantly stiffer than stock rear spring with a light rear bar. What did you change and why?
Reply With Quote
  #972  
Old 01-20-2020, 10:20 PM
SSLance's Avatar
SSLance SSLance is offline
Senior Member
 
Join Date: Oct 2013
Location: Peoria, AZ
Posts: 2,668
Thanks: 72
Thanked 337 Times in 211 Posts
Default

Quote:
Originally Posted by RT_66_Pro_Touring View Post
If I have been tracking your progression right, you were running a significantly stiffer than stock rear spring with a light rear bar. What did you change and why?
I ran 600# rear springs and no bar for several years. I went back to 250# rear springs and a fairly light rear bar over the summer on an effort to get more forward grip.

Especially at GGs style first gear courses, the car just spun the rear tires too much.

It now hooks up much better making for faster times and better tire life but I did have to adjust my driving to the loss of lateral grip.
__________________
Lance
1985 Monte Carlo SS Street Car
Reply With Quote
  #973  
Old 01-23-2020, 09:39 PM
RT_66_Pro_Touring RT_66_Pro_Touring is offline
Member
 
Join Date: Oct 2016
Location: Oklahoma
Posts: 51
Thanks: 3
Thanked 7 Times in 7 Posts
Default

Quote:
Originally Posted by SSLance View Post
I ran 600# rear springs and no bar for several years. I went back to 250# rear springs and a fairly light rear bar over the summer on an effort to get more forward grip.

Especially at GGs style first gear courses, the car just spun the rear tires too much.

It now hooks up much better making for faster times and better tire life but I did have to adjust my driving to the loss of lateral grip.
Hmmmm. That's counter intuitive to me, softening the rear to get more front bite. Sounds like you lost overall bite and gained rear traction.
Reply With Quote
  #974  
Old 01-23-2020, 10:37 PM
SSLance's Avatar
SSLance SSLance is offline
Senior Member
 
Join Date: Oct 2013
Location: Peoria, AZ
Posts: 2,668
Thanks: 72
Thanked 337 Times in 211 Posts
Default

The front lateral grip is still very good, the rear lateral grip is where I gave a little bit on in certain situations. The forward bite increase more than makes up for it though.
__________________
Lance
1985 Monte Carlo SS Street Car
Reply With Quote
The Following User Says Thank You to SSLance For This Useful Post:
Che70velle (01-24-2020)
  #975  
Old 01-24-2020, 07:37 AM
Gscherer78ta's Avatar
Gscherer78ta Gscherer78ta is offline
Senior Member
 
Join Date: Nov 2014
Location: Ft. Worth, TX
Posts: 156
Thanks: 0
Thanked 6 Times in 5 Posts
Default

Quote:
Originally Posted by RT_66_Pro_Touring View Post
Hmmmm. That's counter intuitive to me, softening the rear to get more front bite. Sounds like you lost overall bite and gained rear traction.
Softening the rear will allow the weight to transfer to the front when lifting or when the brake is applied, putting more weight over the front tires. Can also have this same effect by decreasing the rebound on the rear shocks.
__________________
Greg

'78 Trans Am - Y88-R LS3/T56,
Holley EFI, UMI Performance
Reply With Quote
  #976  
Old 01-27-2020, 03:31 PM
SSLance's Avatar
SSLance SSLance is offline
Senior Member
 
Join Date: Oct 2013
Location: Peoria, AZ
Posts: 2,668
Thanks: 72
Thanked 337 Times in 211 Posts
Default

Had to add data to this run from Sunday at Marana just to see for myself.

I'm particularly pleased with the cars ability to transition back and forth 1G to 1G several times in a row in a 45-50 mph slalom without breaking a sweat or sliding a tire. We had two drivers running back to back in back to back run groups, so 16 runs total in a little about 2 and a half hours time. We sprayed the right rear and right front tire once to cool them down after the 12th run is all. Other than that just turn the key and go. Still haven't touched a screw or a knob since last October.

Pretty happy camper...



Here are some cool pics from the event as well.













Way more great pics from Amanda Hitt here... https://adventurewife.smugmug.com/20...SCCA/i-QF7TkGR
__________________
Lance
1985 Monte Carlo SS Street Car
Reply With Quote
The Following 2 Users Say Thank You to SSLance For This Useful Post:
rixtrix1 (02-02-2020), Sonar Chief (02-11-2020)
  #977  
Old 02-11-2020, 05:05 PM
SSLance's Avatar
SSLance SSLance is offline
Senior Member
 
Join Date: Oct 2013
Location: Peoria, AZ
Posts: 2,668
Thanks: 72
Thanked 337 Times in 211 Posts
Default

Finally got around to adding that safety item that I hope I never have to use. On board fire system...



Here you can see the manual pull T-handle and the driver nozzle.



Here is the engine nozzle





I didn't grab a pic of the third nozzle that sticks through the trunk floor and points at the fuel pump and fuel lines on top of the fuel tank.

I also finally put a pretty good bend up on the throttle pedal to make it easier to get 100% throttle, probably raised it an inch off the floor.



Now I'm all ready for two days of on track action at Arizona Motorsports Park Feb 22-23. Skipping the SCCA Autocross this weekend to save my tires for the track weekend.
__________________
Lance
1985 Monte Carlo SS Street Car
Reply With Quote
  #978  
Old 02-11-2020, 07:52 PM
Sonar Chief's Avatar
Sonar Chief Sonar Chief is offline
Senior Member
 
Join Date: Dec 2011
Location: Greater Denver area
Posts: 1,332
Thanks: 245
Thanked 160 Times in 71 Posts
Smile

Lance, looks good! Did you get an automatic system or just a manual system?

Been looking at Safecraft systems also, and by the way ... please make sure ALL firewall pass-throughs are sealed. That pic w the wire loom looks suspiciously loose, FYI.

Michael
__________________
JUST PICTUREShttps://imageshack.com/user/mcavery


Let the house go .... NEVER give up your car!!!!
Reply With Quote
  #979  
Old 02-12-2020, 08:41 AM
SSLance's Avatar
SSLance SSLance is offline
Senior Member
 
Join Date: Oct 2013
Location: Peoria, AZ
Posts: 2,668
Thanks: 72
Thanked 337 Times in 211 Posts
Default

Thanks Michael. It's a 10# 3 nozzle manual system.
__________________
Lance
1985 Monte Carlo SS Street Car
Reply With Quote
  #980  
Old 02-12-2020, 08:21 PM
WSSix WSSix is offline
Lateral-g Supporting Member
 
Join Date: Nov 2008
Location: Dunwoody, GA
Posts: 6,287
Thanks: 646
Thanked 566 Times in 460 Posts
Default

The event pics were great. That 70 Chevelle looks so good even with that pole accident in the drive's side.

Glad the car is working well for you, Lance!
__________________
Trey

Current rides: 2000 BMW 540i/6 and 86 C10.

Former ride: 1979 Trans Am WS6: LT1/T56, Kore 3 C5/6 brakes, BMW 18in rims

Last edited by WSSix; 02-12-2020 at 08:23 PM.
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


All times are GMT -5. The time now is 06:54 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright Lateral-g.net