loose rear end - Suspension and Brake Forum

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loose rear end
Thursday, January 06, 2011 3:47 PM
Lol at the title..... But really I have awesome front steering and cornering but even though the front handles good I have a huge problem with the back end getting loose under heavy cornering at higher speeds. It kinda scares the crap out of me. I want to be able to corner faster and I have 235/45/17 tires in the back so they are plenty wide enough. Is there such things as a independent rear suspension conversion or would a rear strut tower brace help with this issue much? Sorry If these are already asked questions, I just wouldn't know what to search for in this section.




Re: loose rear end
Thursday, January 06, 2011 3:58 PM
IRS swap

Strut brace would help, anti-sway bar would help. Tie bar helps more in shifting lane type movements I found. Higher spring rate in the back is good to have too.



Re: loose rear end
Thursday, January 06, 2011 4:51 PM
it's a sticky at the top of the suspension forum that you posted in. seriously now.



Re: loose rear end
Thursday, January 06, 2011 5:34 PM
With the IRS you can get disk brakes too! I got my setup from the junkyard for $100. Don't forget you will need to change your exhaust too.


Sig'less since '02!
Re: loose rear end
Friday, January 07, 2011 11:15 AM
did not even put the two together never even hit that (IRS) was independent rear suspension... derp



Re: loose rear end
Friday, January 07, 2011 2:23 PM
bradsk88 wrote:Higher spring rate in the back is good to have too.


No, that would make the problem worse in this situation.

A bigger front bar, higher front tire pressure, and lower rear tire pressure would help.
.



Re: loose rear end
Friday, January 07, 2011 2:31 PM
Stiffen up the front end more will
Make it more neutral.


PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
Re: loose rear end
Friday, January 07, 2011 5:16 PM
nothing to contribute, but best thread name evar lol



Re: loose rear end
Friday, January 07, 2011 6:52 PM
Congratulation, you're the only one. Whats your setup so I can copy it, I want oversteer, this whole understeer business is lame.

Unless its getting loose only on single wheel bumps...


Oh @!#$, those wide sticky tires in the back might actually be causing enough toe change in the rear to make a difference. Triangulating the rear trailing arms would help you out I suspect. Theres only one properly done setup that I know of and thats this one. The top 2 blue bars are the ones you want.




1994 Saturn SL2 Home Coming Edition: backup car
2002 Chevy Cavalier LS Sport Coupe: In a Junk Yard
1995 Mazda Miata R-package Class=STR
Sponsored by: Kronos Performance

WPI Class of '12 Mechanical Engineering
WPI SAE Risk and Sustainability Management Officer
Re: loose rear end
Saturday, January 08, 2011 4:58 PM
where do those two top bars connect on each side?


horsepower is the force that determines at what speed you hit the wall, torque is the force that determines how far you take the wall with you after you hit it.
Re: loose rear end
Saturday, January 08, 2011 5:10 PM
James Cahill wrote:
bradsk88 wrote:Higher spring rate in the back is good to have too.


No, that would make the problem worse in this situation.

A bigger front bar, higher front tire pressure, and lower rear tire pressure would help.
.

-MD- Enforcer wrote:Stiffen up the front end more will
Make it more neutral.


Read these two, there's your answer.



>>>For Sale? Clicky!<<<
-----The orginal Mr.Goodwrench on the JBO since 11/99-----


Re: loose rear end
Saturday, January 08, 2011 5:43 PM
02 silver cavy wrote:where do those two top bars connect on each side?


The tops of the trailing arms. I'm going to guess the top of the bolt that is for the swaybar or a hole drilled in the trailing arm.


1994 Saturn SL2 Home Coming Edition: backup car
2002 Chevy Cavalier LS Sport Coupe: In a Junk Yard
1995 Mazda Miata R-package Class=STR
Sponsored by: Kronos Performance

WPI Class of '12 Mechanical Engineering
WPI SAE Risk and Sustainability Management Officer
Re: loose rear end
Tuesday, January 11, 2011 6:46 PM
it looks like they go up to where the wheel bearing bolts would be, in that general area correct?


horsepower is the force that determines at what speed you hit the wall, torque is the force that determines how far you take the wall with you after you hit it.
Re: loose rear end
Tuesday, January 11, 2011 6:48 PM
On the top of the trailing arm at the back of it. i dont think it gets more descriptive than that.


1994 Saturn SL2 Home Coming Edition: backup car
2002 Chevy Cavalier LS Sport Coupe: In a Junk Yard
1995 Mazda Miata R-package Class=STR
Sponsored by: Kronos Performance

WPI Class of '12 Mechanical Engineering
WPI SAE Risk and Sustainability Management Officer
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