Suspension and Chassis Questions about your suspension? Need chassis advice?

Bump Steer Kit

Thread Tools
 
Search this Thread
 
Old 08-19-2005, 07:53 PM
  #1  
Member

Thread Starter
 
Holio's Avatar
 
Join Date: Dec 2001
Location: Orange, CA
Posts: 116
Likes: 0
Received 0 Likes on 0 Posts
Car: 84 Z28
Engine: 305 L69
Transmission: 700R4
Bump Steer Kit

Does anyone know who else makes a kit for our cars other than Baer? I'd like to get the Baer kit but no one has it in stock, and can't get an answer out of Baer about availability.
Old 08-19-2005, 09:51 PM
  #2  
Senior Member

 
SDIF's Avatar
 
Join Date: Oct 2003
Location: Aiken, SC
Posts: 544
Likes: 0
Received 2 Likes on 2 Posts
Car: 91 Z/28, 89 RS Race Car
Engine: 305 stock / ZZ4 AFR 195 9.7:1
Transmission: T5 / t10 / Jerico
Axle/Gears: 10blt w 3.42, 9 in w /3.80 DL
try this... It may work it is a bump steer item for circle track cars

http://www.speedwaymotors.com/xq/asp...splayGroup.htm
Old 08-20-2005, 06:38 AM
  #3  
Member

Thread Starter
 
Holio's Avatar
 
Join Date: Dec 2001
Location: Orange, CA
Posts: 116
Likes: 0
Received 0 Likes on 0 Posts
Car: 84 Z28
Engine: 305 L69
Transmission: 700R4
Thanks SDIF, nice site, didn't know about them. Looks like you can build your own stuff and do it cheaper and better than Baer.
Old 08-20-2005, 09:05 PM
  #4  
Senior Member

 
SDIF's Avatar
 
Join Date: Oct 2003
Location: Aiken, SC
Posts: 544
Likes: 0
Received 2 Likes on 2 Posts
Car: 91 Z/28, 89 RS Race Car
Engine: 305 stock / ZZ4 AFR 195 9.7:1
Transmission: T5 / t10 / Jerico
Axle/Gears: 10blt w 3.42, 9 in w /3.80 DL
they are good for springs and weight jacks too.

very good prices and service
Old 05-19-2006, 05:05 AM
  #5  
Member
iTrader: (3)
 
ABJ88's Avatar
 
Join Date: Jun 2005
Location: Santa Clarita, California
Posts: 217
Likes: 0
Received 0 Likes on 0 Posts
Car: 1990 RS/2000 Z28
Engine: 5.0/5.7
Transmission: 4L60/4L60E
Axle/Gears: 10 bolt/3.23
Sorry I know this is an old post but I'm curious if anyone purchased the parts for the bump steer kit from speedwaymotors.com. I noticed you need to piece it out. Im interested in knowing what I need, they have different lengths and parts. Is it okay to use for daily driven car? I noticed circle track was thrown in there. Thanks!
Old 05-19-2006, 10:25 AM
  #6  
Banned
 
2tone's Avatar
 
Join Date: May 2006
Posts: 6
Likes: 0
Received 0 Likes on 0 Posts
Bumpsteer kits are needed even for daily drivers as a critical steering correction device for a lowered car. The kit will allow you to correct the articulation swing of the tierod. You can see in my diagram below how the tierod geometry shortens and lengthens in lateral length as the suspension travels. You want the complete suspension travel arch to be close to centered on #2 with #1 a starting stagnant ride heilght and #3 a max suspension travel.

When a car is at stock height, the tierod arm will be at approx #1 position with a #3 max travel. When you lower a car, the standard position becomes more around #2 with a max travel and shortening of #4(not pictured, but you get the idea) and this will causeradiacl toein of that wheel underheavy suspension travel thus cause unwanted steer of that wheel when incurring a bump.
Attached Thumbnails Bump Steer Kit-1tie.jpg  
Old 05-19-2006, 05:12 PM
  #7  
Senior Member

 
ross's Avatar
 
Join Date: Nov 2004
Location: stuart fl
Posts: 864
Likes: 0
Received 0 Likes on 0 Posts
Car: 82 camaro
Engine: 434 ci
Transmission: t400
Axle/Gears: 9'' 4.10 gear
Try Ed Quay he say thay are only for off road use.
Old 05-25-2006, 01:01 AM
  #8  
Supreme Member

iTrader: (2)
 
83 Crossfire TA's Avatar
 
Join Date: Jun 2001
Location: DC Metro Area
Posts: 7,975
Received 83 Likes on 70 Posts
Car: 87TA 87Form 71Mach1 93FleetWB 04Cum
Have you guys ever tried to measure your bump steer on a 3rd gen? GM did a very good job with them from the factory, especially compared to competing cars. You can usually lower them 2” without even needing to change toe settings because there is almost no bump steer across the whole useful range of the front suspension (assuming everything is right to start with), where if you look at something like some of the mustangs and other fox chassied cars you’ll find that lowering them about the same amount changes toe about 3/16-1/4”
Old 05-25-2006, 11:19 AM
  #9  
Supreme Member

 
Shagwell's Avatar
 
Join Date: Apr 2002
Location: Southwest Florida
Posts: 4,627
Likes: 0
Received 1 Like on 1 Post
Car: projects.......

My sport lines changed my toe less than .1 - The Hunter 900 at the TK I used-to work at showed my settings to still be within factory specs.
Old 05-27-2006, 02:18 AM
  #10  
Banned
 
ahhhFlubbernuts's Avatar
 
Join Date: May 2006
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by 83 Crossfire TA
Have you guys ever tried to measure your bump steer on a 3rd gen? GM did a very good job with them from the factory, especially compared to competing cars. You can usually lower them 2” without even needing to change toe settings because there is almost no bump steer across the whole useful range of the front suspension (assuming everything is right to start with), where if you look at something like some of the mustangs and other fox chassied cars you’ll find that lowering them about the same amount changes toe about 3/16-1/4”
I'm lowered about 2 1/2" I would guess (24.75" at fender lip off the ground) and I can assure you my atriculation range shortened over 1/8" each side with factory tierods through the suspension travel.
Old 05-27-2006, 03:15 AM
  #11  
Supreme Member

iTrader: (2)
 
83 Crossfire TA's Avatar
 
Join Date: Jun 2001
Location: DC Metro Area
Posts: 7,975
Received 83 Likes on 70 Posts
Car: 87TA 87Form 71Mach1 93FleetWB 04Cum
Dean, I would suspect that there was something tweaked on your car or maybe your idler was mounted a little off. My ’83 sat right at 25” with 26.2” tall front tires and I didn’t have to change toe settings when I lowered it, and FWIW, the early 80’s cars started out sitting MUCH higher then the later 3rd gens, so if anyone should have seen a big change it would have been that car.

I’ve had exactly the same experience with my other 3rd gens, but none of them have been lowered as much as the ’83.
Old 05-27-2006, 03:23 AM
  #12  
Banned
 
ahhhFlubbernuts's Avatar
 
Join Date: May 2006
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Car is an '87. I have owned it since '92. Wifes uncle was first owner and it has nevr been in an accident nor has ever even hit a curb or anything of the such. I would not even bother screwing with a car if it had ever been tweaked previously. It had bumpsteer and needed correction from the lowering. This car tracks flawless now, but was a noticiable problem before I corrected the geometry.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
83 Crossfire TA
Suspension and Chassis
36
01-03-2016 01:26 PM
tonys91rs
Engine/Drivetrain/Suspension Parts for Sale
3
10-10-2015 03:31 PM
SG91camaro
Camaros for Sale
2
09-05-2015 10:27 PM
1Aauto
Sponsored Vendors
0
09-02-2015 01:50 PM
1Aauto
Sponsored Vendors
0
09-02-2015 01:35 PM



Quick Reply: Bump Steer Kit



All times are GMT -5. The time now is 07:38 PM.