100TD IFS Suspension Lift

Submitted: Monday, Mar 15, 2004 at 23:06
ThreadID: 11272 Views:1770 Replies:6 FollowUps:5
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I have just fitted OME suspension to my Landcruiser and raised the front torsion bars by 35mm. I would like to hear from other IFS Landcruiser owners who have also raised the front to see how their tyres are wearing. There seemed to be no problem with adjusting the toe-in but I am concerned about the camber.

Cheers,
Topend.
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Reply By: Member - Andrew & Jen (Melb) - Tuesday, Mar 16, 2004 at 07:42

Tuesday, Mar 16, 2004 at 07:42
Had my torsion bar adjusted to raise the vehicle. Not sure how much it went up but I guess it was about 35mm and have had not tyre wear problems since which is about 40000k's.
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Follow Up By: Topend - Tuesday, Mar 16, 2004 at 19:41

Tuesday, Mar 16, 2004 at 19:41
Thanks Andrew & Jen,

Topend
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Reply By: Member Eric - Tuesday, Mar 16, 2004 at 08:13

Tuesday, Mar 16, 2004 at 08:13
can go up to 50 MM
AnswerID: 50496

Follow Up By: Steve J - Tuesday, Mar 16, 2004 at 21:12

Tuesday, Mar 16, 2004 at 21:12
Eric,
I should be picking up my 100 series (V8) this week end have been thinking of what is really required to go up the 2" and do it properly with out blowing the bank?

Thanks Steven
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Reply By: Member Eric - Tuesday, Mar 16, 2004 at 21:19

Tuesday, Mar 16, 2004 at 21:19
we wound up a freinds ifs to 50 mm an fitted longer travel shocks no problem . If you want budget price foam cell shocks , you cant go past iron man in Westal Rd Vic. If you need Springs for the rear let me know
AnswerID: 50592

Follow Up By: Steve J - Tuesday, Mar 16, 2004 at 21:24

Tuesday, Mar 16, 2004 at 21:24
ERIC,
Thanks for that, but being from Wollongong NSW it might be a bit far. I'll have to check out some of the local 4X4 stores, just not sure what was needed and brands to chec out etc...
NEW TO THE GAME
Thanks Steven
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Reply By: Member - Russell S - Tuesday, Mar 16, 2004 at 21:22

Tuesday, Mar 16, 2004 at 21:22
David Brown (from Brown Davis) and I were discussing this issue, and he advised some caution when doing this type of 'lift'. What you do by pre-loading the torsion bar is certainly lift the vehicle, but you limit (or eliminate) any available downward travel - so when you hit a hole, your wheel instantly comes off the ground. His advice was to only adjust the torsion bar so that you get it back into the middle of the movement range after fitting bar, winch etc to the front. Several companies have larger/stronger replacement torsion bars available to assist with load carrying. Options are certainly limited, whatever you do - that's why I'm going the GXL 1HZ live axle route with an aftermarket turbo.
AnswerID: 50593

Follow Up By: Steve J - Tuesday, Mar 16, 2004 at 21:32

Tuesday, Mar 16, 2004 at 21:32
Russell,
I looked at this option aftrer friends where talking about it but I was buying new through work and was worried about warranty issues.
Steven
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Follow Up By: Topend - Tuesday, Mar 16, 2004 at 23:55

Tuesday, Mar 16, 2004 at 23:55
For Landcruisers ARB recommend 60 to 70mm of droop as a minimum to prevent the shockies topping out. After raising mine 35mm, I still have 80 to 90mm.

To check this measure from the bottom of the rim up to the guard while the vehicle's weight is on the wheels. Then jack up the front till the wheels are hanging and do the same. The difference between the two measurements is the droop.

Topend
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FollowupID: 312407

Reply By: John - Thursday, Mar 18, 2004 at 21:35

Thursday, Mar 18, 2004 at 21:35
Guys you want to be a little carefull about doing a lift to the front of IFS 100 series.
Last Tuesday night we had a technical report delivered by the Technical officer of the Toyota Landcrusier club here in Melbourne.

I hope I got this explanation right and I will endeavour to get a copy of the report for you.

Aparentley the problem lies with too much front lift appling excessive down force on the torsion bar which in turn applies excessive force on the knuckle that joins the wish bone to the body and has caused a failure of this knuckle.

You should check again with ARB as they consulted Toyota about this and now will only lift to the maximum recomended by Toyota which I believe is 30mm.
The vehicle in question had a lift I believe of 70 or 90mm it was reset to 30mm after the repair.

They recomend that you undertake very carefull professional examination of the components involved and also stated that the stress cracking is very very difficult to detect by eye.

As I said I might not have all the technical aspects 100 percent correct but it would be worth your while to ask around and find out some more details.

Believe me a lot of Toyota club members who have 100 series trucks at the meeting were very concerned about what they were told and as soon as the meeting finished rushed the tech officer and the report for more detail.

Regards
John
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Reply By: Michael_FNQ - Friday, Mar 19, 2004 at 22:28

Friday, Mar 19, 2004 at 22:28
I have seen the photos of this failure, I think the failure relates more to the weakness of the IFS design than the height at which torsion bars have been set. However you definately need to maintain 70mm of droop else the front shocks will be damaged. Looking to beef up my IFS. I believe the damaged vehicle had done alot of desert work which subjects the front end to alot of travel thru complete compression and extension which is very stressful. Mine has done alot of hard corrugated road work with a wound up front end, OME LTR shocks and is not showing any signs of failure
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