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| sierra w/t moving front diff forward? http://auszookers.com/forum/viewtopic.php?f=5&t=24506 |
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| Author: | joel [ Thu Aug 04, 2011 1:03 am ] |
| Post subject: | sierra w/t moving front diff forward? |
w/t sierra i want to move the front diff forward, say 30mm. looking it today im guessing i have to re drill the perch and the fishplates as well.? will i have to make the shock absorber mount longer so it is straight as well? cheers |
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| Author: | boostedbrick [ Thu Aug 04, 2011 1:20 am ] |
| Post subject: | Re: sierra w/t moving front diff forward? |
You can go to around 50mm before steering binds. I went 40mm the first time I did it, and the shock hit the bump mount by about 2mm(thin body gabriel). Trimming the edge should sort this out. You can get around 25mm if you drill the perch on the axle. Or you can redrill the spring, this will give you bad caster on fresh springs if you go too far. Used springs that are flatter wont be as bad. |
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| Author: | neofitou [ Thu Aug 04, 2011 1:26 am ] |
| Post subject: | Re: sierra w/t moving front diff forward? |
um.. RUF? DO IT. |
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| Author: | want33s [ Thu Aug 04, 2011 6:28 am ] |
| Post subject: | Re: sierra w/t moving front diff forward? |
22mm is THE MAX you can safely move the front diff forward without major mods. The back of the pitman arm will hit the tie rod and bend it at full compression if you go any further forward. |
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| Author: | joel [ Thu Aug 04, 2011 8:42 am ] |
| Post subject: | Re: sierra w/t moving front diff forward? |
cheers, thanks fellas. |
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| Author: | Gwagensteve [ Thu Aug 04, 2011 10:52 am ] |
| Post subject: | Re: sierra w/t moving front diff forward? |
want33s wrote: 22mm is THE MAX you can safely move the front diff forward without major mods.
The back of the pitman arm will hit the tie rod and bend it at full compression if you go any further forward. Is that with no bumpstop spacing? I'm at 30mm with 2" on the bumpstop and I'm 99% sure I have no contact. I know that full RUF (40mm) does contact, by about 5mm. Steve. |
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| Author: | want33s [ Thu Aug 04, 2011 11:06 am ] |
| Post subject: | Re: sierra w/t moving front diff forward? |
Gwagensteve wrote: want33s wrote: 22mm is THE MAX you can safely move the front diff forward without major mods. The back of the pitman arm will hit the tie rod and bend it at full compression if you go any further forward. Is that with no bumpstop spacing? I'm at 30mm with 2" on the bumpstop and I'm 99% sure I have no contact. I know that full RUF (40mm) does contact, by about 5mm. Steve. 0-20mm bumpstop extension. |
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| Author: | joel [ Thu Aug 04, 2011 11:09 am ] |
| Post subject: | Re: sierra w/t moving front diff forward? |
im running 50mm bumpstop extensions now, do i have to move them forward? |
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| Author: | SierraDan [ Thu Aug 04, 2011 11:17 am ] |
| Post subject: | Re: sierra w/t moving front diff forward? |
yep |
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| Author: | shep [ Thu Aug 04, 2011 11:43 am ] |
| Post subject: | Re: sierra w/t moving front diff forward? |
my diff is close to 50mm forward. photos are on my old swb when i was working out bumpstop spacing. every thing is the same on my lwb except for the steering dampener. tie rod and draglink rub a bit 
this is as close as the pitman gets to the drag link photo dosent show the angles well but the pitman would well and truly smash into the tie rod if allowed to. stock bumpstop also completely misses the diff and had to be spaced forward as well. 
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