7" LIFT DEATH WOBBLES

Post by **tozook** » Tue Jul 18, 2006 7:36 pm

i have just finshed putting a complete 7" lift in my gq it was on 31" tyre before the lift but when i put the lift in i put a set 33" tyres on it and it death wobbles at 40 k's does anyone know what wrong

Post by **Mick.** » Tue Jul 18, 2006 7:51 pm

Did you fit caster plates, drop arms or something to correct the caster with?

Cheers Mick.

Post by **chimpboy** » Tue Jul 18, 2006 8:01 pm

Mick. wrote:Did you fit caster plates, drop arms or something to correct the caster with?

Good question, maybe just more generally, what was in the kit? And is it a LWB?

Post by **Mick.** » Tue Jul 18, 2006 8:18 pm

Another thing worth mentioning.

Have you tried driving it with your 31s on? If so does it still get the vibrations happening?

I'm just asking because when I first got my lift I got my 37s at the same time. I had real bag vibrations and I naturally thought it was something to do with my lift. I later found out it wasn't the lift it was poorly balanced tyres.

I had them rebalanced by another tyre shop and they said the tyres where out to buggery.

Cheers Mick.

Post by **liftkit8** » Tue Jul 18, 2006 8:49 pm

what have you done to correct castor.? what have you done about your panhards?

Post by **4Speed** » Tue Jul 18, 2006 9:58 pm

Here's one more, dropped the cross member down under the gear box?
Some time you do sometimes you don't.

Post by **tozook** » Tue Jul 18, 2006 10:21 pm

it second hand and it come with ever thing this is what i have

Snake Racing Adjustable H/duty Panhard rods
7 inch kings coils
3rd's production rear adjustable top arms
extended brake lines
Rancho RS9000X shocks to suit
front arms with castor correction plates

it's a lwb the front tailshaft dose hit the gear box X member but i have take it out and it still does it and yes i have tryed it on the 31's and it still does it at 40 k's

Post by **chimpboy** » Tue Jul 18, 2006 10:24 pm

Have you had a wheel alignment?

Post by **blackmav** » Tue Jul 18, 2006 10:28 pm

My bet is the bushes, panards can seem Ok but are not. If it were a second hand kit it would pay to put new ones in.

Post by **tozook** » Tue Jul 18, 2006 10:38 pm

the rear panhard bar need new bushes the front was good and no i have not had a wheel alignment i only finshed putting it in today

Post by **chimpboy** » Tue Jul 18, 2006 10:47 pm

You're not driving on a corrugated dirt road are you?

Post by **tozook** » Tue Jul 18, 2006 11:01 pm

no i'm not driving on a corrugated dirt road mate

i just walked out the back and noticed it sagging in the right front would this make it wobble look that

second hand shit

Post by **chimpboy** » Tue Jul 18, 2006 11:33 pm

tozook wrote:no i'm not driving on a corrugated dirt road mate

i just walked out the back and noticed it sagging in the right front would this make it wobble look that

second hand shit

Hmm, which side? Sometiems the passenger side spring is a bit weaker to balance the weight of the driver, I'm just wondering if the springs could be swapped. A bit of a long shot and a lot of work, but maybe worth checking out at least.

However, I don't think one spring sagging would in itself cause a lot of vibration anyway.

Or, could one side be sagging because the other side's spring isn't seated properly?

Anyway. You probably do need a wheel alignment, especially for the castor, but I think that could cause wandering, pulling to one side, etc, but not really vibration.

Sorry I am rambling on without helping much.

Post by **of4x4** » Wed Jul 19, 2006 12:55 am

Universals in the rear tailshaft? If they've been in it for a while with little or no lift, they may now be binding with the extended angles they are forced to endure.

Did you swap the rear tail shaft around? Normally big lifts require the skinny end of the tailshaft to be at the gear box end to clear the chassis cross member.

Can you re-install the front tailshaft and remove the rear, lock the hubs and drive it in front wheel drive and see if this improves or removes the vibration?

Post by **turbo gu** » Wed Jul 19, 2006 7:45 am

is it under acceleration and thru the floor or is it thru the steering wheel? does it happen after you hit abump? Patrol shimmy is usually caused by worn components in the front end as in bushes,bearings etc.
If it is under acceleration it will be in the rear shaft/uni's or angle. also check that the front shaft isn't turn while you drive

Post by **JemmyBubbles** » Wed Jul 19, 2006 12:37 pm

You've lifted the thing 7" above standard and have corrected castor accordingly. All of your steering componentry would be at really really nasty angles, take a photo of it and post it up.

MY BET is on it being panhard/draglink miss-aligment issues (not to mention the nasty angle) due to the lift

Post by **4b kidd** » Wed Jul 19, 2006 4:07 pm

i had a simalar issue
replaced the bushes in my front panhard
good as new

Post by **blkmav** » Wed Jul 19, 2006 4:14 pm

7 inch lift for 33's

Post by **tozook** » Wed Jul 19, 2006 4:18 pm

the 33's where sitting out the back

Post by **Vulcanised** » Wed Jul 19, 2006 4:22 pm

mine used to shake badly at about 70kph and again at 95kph with a 4" lift, even with 5 degree castor plates, and all bushes ok. I put 6" dobinsons in it on the weekend..... doesn't shake at all now

one thing to make sure of is that the front and back wheels are in the same track. My shakes improved a little when i moved the back end over 10mm to match the front.

Post by **GUHOON** » Wed Jul 19, 2006 6:21 pm

My mate put a 7 inch kit in his GU ages ago and had the same problems , turns out the panhard on the front was the wrong one or something and was flogging around on the mount (wrong size ball joint shaft maybe)

Post by **tozook** » Wed Jul 19, 2006 6:37 pm

fix it was the steering damper was

Post by **chimpboy** » Wed Jul 19, 2006 6:43 pm

tozook wrote:fix it was the steering damper was

I need a new one of those too, what are they worth?

Post by **blackmav** » Wed Jul 19, 2006 6:46 pm

Steering dampener will only cover up problems that cause the death wobbles.

Thats why I have a HUGE one

Post by **Vulcanised** » Wed Jul 19, 2006 7:00 pm

chimpboy wrote:
tozook wrote:fix it was the steering damper was
I need a new one of those too, what are they worth?

a decent RTC will cost over 300 bux..... Tiny is sending me up a H/D damper for about $140 i think.

Post by **tozook** » Wed Jul 19, 2006 8:45 pm

i got one from bbm today it cost a $165 for the steering damper the H/D damper going for around $300 from bbm

Post by **liftkit8** » Wed Jul 19, 2006 8:49 pm

rtc dampeners suck my dogs crap.dont buy one pal. make sure you are TRUELY alligned and balanced. Remember to cut a scollop out of gbox cross member before you try and flex front. what about the rear shaft , it must be mighty close to the connecting tube under rear shaft ? youd wana check all that out before..... just some of the dramas i had with 8" theres plenty more just dont have the time right now.
MIck.

Post by **j-top paj** » Wed Jul 19, 2006 9:07 pm

blkmav wrote:7 inch lift for 33's

thats what i was thinking... i thought at least 37s or something..
imagine how small the 33s will look in the guards

Post by **GUHOON** » Wed Jul 19, 2006 9:13 pm

If your after a cheap damper (not RTC) i got one a while back about $100 for an OME one.

Post by **tozook** » Wed Jul 19, 2006 9:14 pm

it will be on 37 when i have the money

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