tom woods driveshaft front pinion angle - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 7 Old 08-10-2015, 01:33 PM Thread Starter
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Cool tom woods driveshaft front pinion angle

i have a 4 inch rc lift on a 2 door, what should my front pinion angle be at does anyone have a 4 inch lift with after market driveshaft how much should i pitch the front? does anyone have the measurements of their threads on the uppers?
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post #2 of 7 Old 08-10-2015, 01:42 PM
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You have to balance pinion AND caster. I would start around 4.5 (+ 1.5 at the pinion. If you feel any vibes dial in more pinion.

2007 JKR | PSC Big bore box | Rock Krawler 3.5" x-factor arms l SteerSmarts YETI track bar, tie rod, no drill flipped drag link, Griffin | Synergy frame brace | 37x12.5x17 Nitto RG's | Dana front DS | Fox IFP shocks | Artec front armor kit/Currie JJ's | Teraflex rear axle bracket | EVO Rockstars | Ridged D's, A pillar mounts | VKS sliders l Trek Armor seat covers | Superchips/Sprint booster | Savvy half doors w/ Bestop uppers
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post #3 of 7 Old 08-10-2015, 02:00 PM Thread Starter
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i don't have vibe my rear is right on, but with the front i do have a shimmy dw steering could it be i pitched the front too much
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post #4 of 7 Old 08-10-2015, 02:22 PM
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Sounds like a diff problem.

2007 JKR | PSC Big bore box | Rock Krawler 3.5" x-factor arms l SteerSmarts YETI track bar, tie rod, no drill flipped drag link, Griffin | Synergy frame brace | 37x12.5x17 Nitto RG's | Dana front DS | Fox IFP shocks | Artec front armor kit/Currie JJ's | Teraflex rear axle bracket | EVO Rockstars | Ridged D's, A pillar mounts | VKS sliders l Trek Armor seat covers | Superchips/Sprint booster | Savvy half doors w/ Bestop uppers
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post #5 of 7 Old 08-10-2015, 02:35 PM
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How are you ball joints ?

2007 JKR | PSC Big bore box | Rock Krawler 3.5" x-factor arms l SteerSmarts YETI track bar, tie rod, no drill flipped drag link, Griffin | Synergy frame brace | 37x12.5x17 Nitto RG's | Dana front DS | Fox IFP shocks | Artec front armor kit/Currie JJ's | Teraflex rear axle bracket | EVO Rockstars | Ridged D's, A pillar mounts | VKS sliders l Trek Armor seat covers | Superchips/Sprint booster | Savvy half doors w/ Bestop uppers
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post #6 of 7 Old 08-10-2015, 10:49 PM
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Remove the front shaft just to take it out of the equation, then fix the shimmy/wobble. You could probably just do an internet search for Planman's writeup and follow the steps.

Once the steering is dialed in, reinstall the shaft and see how much caster you can get away with.
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post #7 of 7 Old 08-11-2015, 07:10 AM
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on 4" of lift you front pinion angle will be terrible. Like others have said it is a balance of caster and vibrations cause by the poor angle.

Some build info here:
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