FINALLY GOT RAISED LEAFS INSTALLED!

[SamMu93]

Truck booked in to get a leaf removed from each rear spring tomorrow. Will be getting spacers made: 14mm thick and 10mm thick (use which ever ones dont cause clearance issues)- 4 of each size. 43mm diameter spacers.
Just need to get the bolt size and then im set. Think its a 14mm high tensile, will add 20mm give or take to new bolt.

After I wound the drivers torsion down in the weekend it now pulls to the right... So if that was the mechanics fault for winding it too high then going for an alignment, then that was an alignment down the drain...

[geeves]

If the mechanic did all the work and that was there level of competence they should redo that alignment for free

[SamMu93]

Yeah, Im not overly impressed at that effort! Would be nice if they had said "sorry about that". Anyway I have an engineer from work making me some spacers- the only measurment I dont have is the bolt hole in the centre - looks like its 14mm maybe...
Hopefully with this leaf removed it will lower the back a little bit- which means I can lower the front, which will soften the front. The torsions at this current level have too much preload on them which gives a rock hard ride...
Someone didnt think they should get harder as you wind them up... Come take my truck for a drive!

[turnturn]

It was me that said the spring rate shouldn't change with ride height and I still believe that. What does change however is the angles at which suspension components work when you raise your vehicle and that the bump stops start coming into play during normal movement. This makes your ride harsher, but its not the torsion bars fault.

[SamMu93]

Heh yeah well I disagree with the bump stops part of your comment, they dont hit now/ havnt yet! Still hard as hell suspension.
Not sure about your other note - the angles at which suspension components work when you raise your vehicle.
Either way, when I lower the front back down a tad the ride will improve - for whatever the reason.

[isuzurob]

The spacers for you diff shouldnt work as the diff brackets the hit the steering track rod, well it has on 3 of my trucks, you need to cut the plates and reweld them (fastest and easiest way) lowering the front diff makes the front axles straight again, i did 35mm drop on truck with 3 inch lift and axles were staight, my truck im building now got 25mm and 2 1/2 lift and diff couldve been lower, lowering diff just puts cv angles closer to factory

[SamMu93]

isuzurob wrote:The spacers for you diff shouldnt work as the diff brackets the hit the steering track rod, well it has on 3 of my trucks, you need to cut the plates and reweld them (fastest and easiest way) lowering the front diff makes the front axles straight again, i did 35mm drop on truck with 3 inch lift and axles were staight, my truck im building now got 25mm and 2 1/2 lift and diff couldve been lower, lowering diff just puts cv angles closer to factory

Have you looked at this post? ---> viewtopic.php?f=20&t=2300&p=21727&hilit=spacer+diff+drop#p21727
This chap got 14mm drop without hitting the "draglink', this could be what your referring to?

Also, im getting 4 spacers made that are 14mm thick + another 4 spacers at 10mm thick. Just in case the 14mm ones dont work on my truck.

[isuzurob]

i cannot comment on doing it to a 3.1 chassis as the diff brackets and chassis are different to the 2.8 bighorns i have done, i have done 2 lwb 2.8 and 1 swb 2.8 diff drops, swb same chassis as 2.8 mu other than rear shock setup

[SamMu93]

ok well thats good to know, will find out if the mechanic is prepared to modify the brackets. Would this type of thing usually require cert ?
Also when you did yours, did you need to make new brackets or just re position your old ones?

[SamMu93]

Is this what your talking about when you say modify the brackets?