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Isuzu Trooper Owners Club UK™ Isuzu Trooper, Rodeo, Bighorn, Mu & VehiCROSS Owners Club
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Twister Moderator
Joined: 21 Jul 2005 Posts: 2340 Location: Stockport
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Posted: Mon Sep 25, 2006 16:30 Post subject: |
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Sorry guys, been rather busy, Lee, I'll phone you later tonite, coz I figure I would make more sense of it on the phone. We will get to the bottom of this, but it sounds to me like the Calmini arms are the source of the problem. _________________
"Tongue-tied and Twisted; just an Earth-bound misfit, I..." - PF
LTM # 000002 |
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Posted: Mon Sep 25, 2006 16:30 Post subject: Google Ads keep this community free to join! |
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Chris B Lifetime member
Joined: 17 Oct 2005 Posts: 3537 Location: Chorley, Lancashire
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Posted: Mon Sep 25, 2006 17:25 Post subject: |
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There he is... MrT is back _________________ Isuzu Rodeo Denver Max LE | 265/65R18 BF Goodrich AT LTM No.60
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VXer *
Joined: 15 Sep 2006 Posts: 29 Location: Bisley
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Posted: Tue Sep 26, 2006 8:38 Post subject: |
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Mr T
If you looked back through the thread You'll see that I have the same problem with my VX so I'd be pleased if you post anything you've managed to sort out with Lee. BTW I don't have Calmini Arms, I've done the Ball Joint flip and fitted the 1/4" shim in there as well but even with 10mm of camber shims there still out at the top.
Any help would be greatly appreciated
Col |
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Webby *****
Joined: 08 Feb 2005 Posts: 536 Location: Suffolk
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Posted: Tue Sep 26, 2006 9:46 Post subject: |
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Seen in one of the mags that Superpro make camber correction bushes. Would they be any help? Don't know if they make any to fit the trooper though.
Might be worth the question to your prefered supplier. I know OEC 4x4 can supply them, i have found them to be very helpful in the past. _________________ Isuzu Trooper SWB 3.0DT Commercial |
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Twister Moderator
Joined: 21 Jul 2005 Posts: 2340 Location: Stockport
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Posted: Tue Sep 26, 2006 18:04 Post subject: |
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No they don't make them for the Trooper. _________________
"Tongue-tied and Twisted; just an Earth-bound misfit, I..." - PF
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Twister Moderator
Joined: 21 Jul 2005 Posts: 2340 Location: Stockport
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Posted: Tue Sep 26, 2006 18:43 Post subject: |
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Ok, before we go into individual details, lets cover the basics.
Just so we're all singing from the same hymn book;
Looking at the front wheels from the front of the vehicle -
( / \ ) = negative camber ( tops of wheels in, bottoms out ), good for racing cars, not good for 4x4s as it causes oversteer and therefore increases roll over risk.
( \ / ) = positive camber ( tops of wheels out, bottoms in ) A small bit of positive camber is acceptable on a 4x4, but too much will cause severe understeer, and will feather the tyres at an alarming rate.
In standard form the Top wishbone is shorter than the bottom wishbone, but the suspension is set at the factory to a height where the wheel sits as near as damn it vertical ( i.e zero camber) at static ride height. As the suspension travels downwards ( i.e droop) the shorter top arm scribes a smaller radius than the longer bottom arm, effectively pulling the top of the wheel further in than the bottom. ( negative camber ). In standard factory form this is just noticable.
However, once you start to crank up the torsion bars you move away from the zero camber position as the standard, and at 2 inches of lift the negative camber ( / \ ) becomes noticable. The Calmini top arms are longer than stock to compensate for this. The ball joint flip effectively pushes the top arm back up towards the horizontal, pushing the top of the wheel back out again. However, if you did a ball joint flip with the Calmini arms fitted you would be in effect compensating twice, which would induce positive camber ( \ / ).
Likewise if you performed a ball joint flip without cranking the torsion bars that would also induce positive camber.
The one thing that must be said for the ball joint flip is that once performed the top and bottom arms move differently in relation to each other, and so at the extremes of suspension travel the cambers are markedly different, but considering this doesn't happen when on the road it doesn't really matter.
The other thing to note is that my workings are based on a 98+ Trooper, which has longer wishbones to start with. It will vary from model to model at which point the camber changes become noticable. I know my old 1990 2.8TD showed too much negative camber at 1.5 inches of lift, but a ball joint flip gave it too much positive camber, so by lifting it even further after the ball joint flip, to about 2.5 inches, the camber at static was reset to virtually zero. There is a certain ammount of trial and error involved, and I feel we may be getting a little too complicated, after all it should be a fairly straightforward process .
Now, lets get these motors sorted between us _________________
"Tongue-tied and Twisted; just an Earth-bound misfit, I..." - PF
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siweb *******
Joined: 18 Apr 2004 Posts: 1590
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Posted: Tue Sep 26, 2006 18:49 Post subject: |
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mine look like this on the 2.8 mr t / \ . 1" lift and flip. have i *beep* up _________________
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markymoan *******
Joined: 25 Jun 2005 Posts: 16267 Location: Naughty Step
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Posted: Tue Sep 26, 2006 18:52 Post subject: |
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mr Twister wrote: |
I know my old 1990 2.8TD showed too much negative camber at 1.5 inches of lift, but a ball joint flip gave it too much positive camber, so by lifting it even further after the ball joint flip, to about 2.5 inches, the camber at static was reset to virtually zero. |
OOOOOOO now you are talking _________________ |
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Twister Moderator
Joined: 21 Jul 2005 Posts: 2340 Location: Stockport
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Posted: Tue Sep 26, 2006 19:01 Post subject: |
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Si, have you reset the tracking to parallel, coz if not that will accentuate it. _________________
"Tongue-tied and Twisted; just an Earth-bound misfit, I..." - PF
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siweb *******
Joined: 18 Apr 2004 Posts: 1590
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Posted: Tue Sep 26, 2006 19:06 Post subject: |
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ah!!! no, but does it really matter for mine tho?? |
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Twister Moderator
Joined: 21 Jul 2005 Posts: 2340 Location: Stockport
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Posted: Tue Sep 26, 2006 19:08 Post subject: |
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So........why you askin
_________________
"Tongue-tied and Twisted; just an Earth-bound misfit, I..." - PF
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siweb *******
Joined: 18 Apr 2004 Posts: 1590
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Posted: Tue Sep 26, 2006 19:11 Post subject: |
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just in case owt new popped in ya head, and it worked , but still would it help in anyway if I corrected it? |
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Twister Moderator
Joined: 21 Jul 2005 Posts: 2340 Location: Stockport
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Posted: Tue Sep 26, 2006 19:15 Post subject: |
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Like I said Si, trial and error. I know mine is very sensitive to even a 1 degree change in tracking, so yes it probably is worth a try. _________________
"Tongue-tied and Twisted; just an Earth-bound misfit, I..." - PF
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Chris B Lifetime member
Joined: 17 Oct 2005 Posts: 3537 Location: Chorley, Lancashire
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Posted: Tue Sep 26, 2006 19:35 Post subject: |
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Think I will leave mine alone for the minute _________________ Isuzu Rodeo Denver Max LE | 265/65R18 BF Goodrich AT LTM No.60
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Twister Moderator
Joined: 21 Jul 2005 Posts: 2340 Location: Stockport
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Posted: Tue Sep 26, 2006 20:04 Post subject: |
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Yours is the easy one Chris, just a carbon copy of mine . _________________
"Tongue-tied and Twisted; just an Earth-bound misfit, I..." - PF
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