[smokey]

The Oem steering bracket keeps braking (3Times) any idea of the cause.

sierra 1989 new suspension and damper ,used as dailey driver.

Smokey

[stockman]

I read some where that they do sfa. Can you feel the differance with it off?

[alien]

just ditch it... my damper died so i took it off temporarily, then realised the steering felt lighter (better) and noticed no other difference when driving, even offroad the bump steer is the same.

Save yourself the cash of fixing it IMO.

[smokey]

woobles like death when removed is this a sign of other problems.

[JrZook]

smokey wrote:

woobles like death when removed is this a sign of other problems.

Yes!

[smokey]

any idea what i should look at

[alien]

wheel bearings, wheel balance and alignment, check your bushes on the springs, check u-bolts are tight, check driveshaft unis for play....

[lump_a_charcoal]

Are you SPOA or lifted at all?

[smokey]

Thanks for the help have replaced all suspension and bushes with quality gear,will look at front end again can see no sine of movement last time i looked but will check further..
A bump in the road triggers the wobble.

[royce]

If you havent had the steering king pins and swivel seals done anytime recently there is a good place to start, making sure the bearings are set by the manual, not just a bit of a feel and a she'll be right

make sure all teh bolts and nuts in teh suspension are tight as well

[steak_knife]

royce wrote:

If you havent had the steering king pins and swivel seals done anytime recently there is a good place to start, making sure the bearings are set by the manual, not just a bit of a feel and a she'll be right

make sure all teh bolts and nuts in teh suspension are tight as well

X20

dampener's were fitted for a reason, if your car's std ( your car is not Mr alien) then it's best to keep it there..

Check the extended & compressed length's against the distance between mounting point's to, your "new" one may of been wrongly boxed.
Also look for missing bolt's on the swivel hub seal's, as they are your steering stopper's.

[christover1]

Sometimes the drag links become " elastic " with age, big tyres, lifts, rim offsets etc.
They are quite flimsy stock.
You can see them buckle durung the death wobbles,
if you watch from the front (not easy with out help )
Obviously check all steering and front end parts, too.

[alien]

out of curiosity - whats the new suspension and how has it affected your castor?

[royce]

how do leaf springs effect castor exactly?

[Fatzook]

Not that I don't enjoy looking at Army Barbie, but how is it relevant to the newly formed discussion within a discussion about castor with relation to leaf springs?

[steak_knife]

Fatzook wrote:

Not that I don't enjoy looking at Army Barbie, but how is it relevant to the newly formed discussion within a discussion about castor with relation to leaf springs?

now i have a head ache....

[TryHard]

Dont run Damper find they hide problems ....

[steak_knife]

TryHard wrote:

Dont run Damper find they hide problems ....

like wobble's??????

[Fatzook]

steak_knife wrote:

Fatzook wrote:

Not that I don't enjoy looking at Army Barbie, but how is it relevant to the newly formed discussion within a discussion about castor with relation to leaf springs?

now i have a head ache....

Yeah I expended the little amount of brain power I had just typing that sentence

[royce]

Fatzook wrote:

Not that I don't enjoy looking at Army Barbie, but how is it relevant to the newly formed discussion within a discussion about castor with relation to leaf springs?

I was attaching that to a post in another thread and backed out cause I figured it wasnt worth the effort cause you cant tell some people, must of decided to stick here instead

[christover1]

I put an Old Man Emu damper on my Sierra
and never had a problem ever after.
Never got around to refitting it when I put power steering in.
Guess it wasn't needed, so never bothered.

[Fatzook]

royce wrote:

Fatzook wrote:

Not that I don't enjoy looking at Army Barbie, but how is it relevant to the newly formed discussion within a discussion about castor with relation to leaf springs?

I was attaching that to a post in another thread and backed out cause I figured it wasnt worth the effort cause you cant tell some people, must of decided to stick here instead

You're talking about me aren't you

[boostedbrick]

My shit liked to bump steer for the short time I didnt have a steering dampner fitted. Id prefer to keep it.. Fresh wheel bearings, king pins seals and what not made not noticable effect so i dont think there was an issue there causeing bump steer. I do run more toe in now to make it easier to drive.

Are the repairs on the bracket strong enough?

[MART]

So I wonder why they make tapered wedges to correct castor on leaf springs , ? , Cheers Paul.

[JrZook]

MART wrote:

So I wonder why they make tapered wedges to correct castor on leaf springs , ? , Cheers Paul.

Im assuming because some lifted leafs have a large arc and a closer eye-eye measurement when standing than stock, thus decreasing the shackle angle and therefore decreasing the overall castor.

Dan

[alien]

my point exactly... i was questioning if he was running something like the calmini lift etc which changes the pinion angle a fair bit, causing potential driveshaft vibes and possibly a caster issue that accentuates minor vibrations.

[royce]

how does the calmini kit alter the pinion angle?

[alien]

different shackle length / shackle reversal tips the spring on an angle and rotates the diff.

[royce]

no it doesnt, its the exact reason they have them big fangs out the front, the rear print eye is lowered from the additional shackle in there so the front is lowered the same amount plus takes into account the shackle that was once there

the only way youll change castor in a leaf spring is if the mounting pin is a long way off the centre of the leaf and you arch the crap out of it so the mount is on more of a slope, you just cant do this on a sierra its too close to central, ive even tried adding more arch into a spring on one side to adjsut from longer shackles, doesnt work you get next to no change in castor

[JrZook]

royce wrote:

no it doesnt, its the exact reason they have them big fangs out the front, the rear print eye is lowered from the additional shackle in there so the front is lowered the same amount plus takes into account the shackle that was once there

the only way youll change castor in a leaf spring is if the mounting pin is a long way off the centre of the leaf and you arch the crap out of it so the mount is on more of a slope, you just cant do this on a sierra its too close to central, ive even tried adding more arch into a spring on one side to adjsut from longer shackles, doesnt work you get next to no change in castor

If the shackle angle changes due to the arc/length of the leaf then then castor be altered as this will rotate the diff to some degree. You are correct in saying the arc in the leaf alone will do nothing castor-wise as the locating pin is near central.

smokey:

What actual suspension setup are you running and what other mods do you have on your vehicle? You got any pics of this mount breaking off?