AM I missing the Stabilizer bar??

[Q45dude]

I bought some stabilizer bushings to change on my 94 Q45. but I can't find it in the rear of the car. Do all Qs come with it or only Qs with active suspension and 4 wheels steering??

thanks

[unknown007]

You got a standard so that means you dont have one.Only Active suspension and 4-wheel steering.

[Q45tech]

The standard Q [without a rear sway bar] is extremely biased forward in roll stiftness after the first 1" of body roll [any turning which exceeds 0.25G out of 0.75G limit]. A 29mm bar is stiffer than the front springs after the coupling bushings are compressed ~~= to 1" of body roll.The Q is a neutral steer vehicle until the 0.25G is exceeded then the understeer starts to increase.

The front 2 endlink sway bushing per side set the ramp up rate towards understeer.

[Q45dude]

Thank you both for your replies. I gues now I got a new set of sway bar kit on my hand that I can't use.

[Q451990]

Or the first step in adding the bar! I need to do that... I want to add one sometime. Maybe after I figure out this injector deal...

Heath

[BadQ45t]

Add the bar, alot of people have done that and not an expensive job and your car body already has the mounting points. Do a search, I think alot of people found those for $200 bucks or so, a junk yard if you can find a Touring or Active you can get one really cheap, but even brand new they are not alot of $$$ and good upgrade for the price without alot of installation issues.

[unknown007]

Thank you both for your replies. I gues now I got a new set of sway bar kit on my hand that I can't use.

You can always use it or sell it.Junk yards around your area maybe have some Rear stabilizer bars.Buy one and add it on.

[Q45tech]

Don't waste time with the tiny soft 15.9mm bar from "t" cars as it is less than 10% as stiff as the rear springs ~~ < 12 lbs per inch.

the 15.9mm will only reduce the max rear +- 3.0" of sway to +- 2.75" whereas the 20mm from active will reduce sway to +- 2.25".

The actives are tough to find in junkyars as they represented < 10% of the 90-94 sold in US.

But always lookunder the rear as many bars were sold and added by knowledgable.

[Q45dude]

Thank you all. I'll start my search for it.

[paranoidjack]

The standard Q [without a rear sway bar] is extremely biased forward in roll stiftness after the first 1" of body roll [any turning which exceeds 0.25G out of 0.75G limit]. A 29mm bar is stiffer than the front springs after the coupling bushings are compressed ~~= to 1" of body roll.The Q is a neutral steer vehicle until the 0.25G is exceeded then the understeer starts to increase.

The front 2 endlink sway bushing per side set the ramp up rate towards understeer.

Tech, does this mean that worn links would account for much heavier understeer over .25g, or at least "far more commonly induced" understeer?

[Q45tech]

No it is the opposite. Worn, lose, or sloppy FRONT end link bushings disconnect the front bar FURTHER DELAYING the action, Decreasing the build up of understeer frpm neutral effect of proper springs.

Now the same worn bushings on the rear delay the partial reduction in understeer [created by front bar] towards a more neutral steering.

On a Q the endlinks are attached to the middle of lower arms so the bars move only 1/4 of the body amount. A 1" body roll applies a 1/4" to the bushing which must compress before the bar sees the force.

With 4 bushings per side on the rear hopefully easy to see how 1/16" per bushing can dissapate 1" of body roll without the rear bar ever SEEING any force to restrict. Even the next 1" of body roll is not fully trying to bend the bar.

So it is difficult to just add up a bars stiffness and say it is fully functional with any bushings. Now front has only 2 bushings per endlink so the effective ramp up rate is twice as effective [assuming same wear and sloppiness].

Nylon, urethane, bushings have much less give under compression so the bar resistance occure much faster under much less body roll.Using these can feel like you have doubled or tripled the bars stiffness, but small bumps are instantly coupled to suspension adding impact harshness and the potential to bend or break something.

[maxnix]

Tech, does this mean that worn links would account for much heavier understeer over .25g, or at least "far more commonly induced" understeer?

Dont forget on the FGY33 the front suspension in a MacPherson strut and the anti-sway bar links connect just below the base of the strut spring seat.

Much different design from the G50 multilink front suspension.

Rear suspension is very similar, but slightly differently dimensioned.

[Panther in a Q45a]

I have the rear bar from a 94 cheap if you want it. send me email