GU lift...how high before other changes?

Submitted: Tuesday, Jun 21, 2005 at 17:53
ThreadID: 24061 Views:1971 Replies:7 FollowUps:4
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As you can tell from previous posts I'm in the middle of the decision process on what new springs and shocks to get for my GU!

But can you tell me how high I can go before I have to fit castor kits or other things costing $$$.

I am looking at a minimal lift of around 30mm. Is there anything else I need to consider in doing this?

Cheers
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Reply By: Member - Crazie (VIC) - Tuesday, Jun 21, 2005 at 18:04

Tuesday, Jun 21, 2005 at 18:04
Andrew
You can do 2inches (50mm) with out having to change anything. Above that you may need to do offset castor bushes, above 3 to about 4 inches you may need to extend diff and brake lines and extended shocks.
cheers

Crazie
AnswerID: 116755

Reply By: Member - Chris M (QLD) - Tuesday, Jun 21, 2005 at 21:11

Tuesday, Jun 21, 2005 at 21:11
Ran a 3 inch dobinson setup with no castor correction. Drove like a dream. Did extend brake lines and diff breathers. Brake lines did not need to be done, but I knew I'd jack it up further sooner rather than later...which I did. I installed the kit at 800k's on the clock. A 200,000k truck may need castor correction with all the extra wear.

3 inch is a great lift on the GU's. 31's look great, they sit well and still handle relatively well. The 4 inch extra heavy duty lovells kit with EFS shocks on the GU were perfect. I also ran extended sway bar linkages, 5.5 degree castor correction plates and adjustable panhard rods. I payed under a grand for mine but that was from my mate who owns a fourby shop.

I can recommend the lovells/EFS combination as I ran it in a GQ as well for 100,000.

Cheers,

Chris.
AnswerID: 116799

Follow Up By: Truckster (Vic) - Tuesday, Jun 21, 2005 at 21:35

Tuesday, Jun 21, 2005 at 21:35
31s would look like a 1970 rollerskate - all body and no wheels!

You can fit Q78 swampers with a 2-3inch lift on a GU, they are 36's....
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Follow Up By: Member - Chris M (QLD) - Tuesday, Jun 21, 2005 at 21:45

Tuesday, Jun 21, 2005 at 21:45
31's looked good on the 3 inch, not the 4 inch...even the 285/75/16's were too small. Got an acquaintance who runs Q78's on a shorty GQ, the wheel arches meet in the middle and they still scrub.
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FollowupID: 372276

Follow Up By: Truckster (Vic) - Tuesday, Jun 21, 2005 at 21:53

Tuesday, Jun 21, 2005 at 21:53
GQs are odd.. my 33s rubbed with 6inch sus/2inch body lift... both BFG and MTR's.. Could do the bumpstops, but its only the inner guards.

the Simex's dont rub as bad, but are 35's... mates 37s MTR's were interesting fit
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FollowupID: 372278

Reply By: Member - TonyG (Qld) - Wednesday, Jun 22, 2005 at 08:15

Wednesday, Jun 22, 2005 at 08:15
Hi Andrew,

I have a 04 model GU, and installed 2 inch lift using OME shocks, and was advised by the installer to also install casters.

I got the casters installed and would highly recommend them. We have even tyre wear, and a good feel of the steering.

Hope this helps

Thanks

Tonyg
AnswerID: 116842

Reply By: Member - Karl - Wednesday, Jun 22, 2005 at 15:41

Wednesday, Jun 22, 2005 at 15:41
I had a 40mm lift on my 80 series and had to get the Castor kit (as well as a camber kit) fitted; however, it was possible that it was due to the age of the vehicle - a 91 model.

My personnel thoughts though if you are going to alter the vehicle from it's original design ie the lift kit then you should really consider the castor kit and get it done all at the same time. Rather than later on and costing more money.
AnswerID: 116907

Reply By: Member - Pezza (QLD) - Wednesday, Jun 22, 2005 at 19:07

Wednesday, Jun 22, 2005 at 19:07
Hi Andrew,

Have a look at my rig details, in my case the castor correction kit ( bushes only ) was needed, tried running without it and didn't feel real good. Had a series 2000 setup in my LWB GQ, IMHO the setup I have now is far better. Keep in mind the way you see it in the rig pic the whole lot weighs 3t plus, and I stuck in 2x30mm spacers in the rear the night before we left to have it sit as seen here.
If your sticking to under 2 inches you shouldn't need any of the extra stuff except maybe panard rods. Note the "should" & "maybe" as most patrols are finicky to suspension changes at the best of times.

Avagoodn
Pezza
AnswerID: 116939

Follow Up By: Member - Pezza (QLD) - Wednesday, Jun 22, 2005 at 19:34

Wednesday, Jun 22, 2005 at 19:34
Just found your previous post Andrew,( I should've read it first ) and with the lift you're looking at you definately won't need any other mods, just bung it in and happy travelling.

Avagoodn
Pezza
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FollowupID: 372445

Reply By: Brendon Soo - Thursday, Jun 23, 2005 at 08:42

Thursday, Jun 23, 2005 at 08:42
Hi,

50mm would result in very little additional requirement to modify/replace your panhard rods, steering drag link, castor angles and swaybar linkages. Pretty much anythng beyond 50mm will require more mods to get it right.

Regards,

Brendon Soo
AnswerID: 117000

Reply By: BamBam - Thursday, Jun 23, 2005 at 16:46

Thursday, Jun 23, 2005 at 16:46
Anyone knows what happens if you go over 50mm and don't touch the other bits - castors etc?
AnswerID: 117085

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