Easiest way to raise pinion of '99 XJ D30?
11-20-2012, 10:42 AM
#1
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Year: 1986
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Engine: 5.3L Vortec V8
Easiest way to raise pinion of '99 XJ D30?
I have a Dana 30 high pinion, non disconnect XJ front axle. I. Need to raise the pinion angle by about 10° to get proper driveline angles. I want to maintain my proper caster angle.
My question is really about the amount of work and specialized tooling needed to accomplish this. Would it be easier to grind the welds on the pumpkin (I think there are just 4 rosette welds) and then rotate the tubes in the pumpkin, and then cut off the passenger side UCA bracket and reattach to match the drivers side bracket (which is cast on the pumpkin)? Or would it be easier to cut off the knuckles and spring/LCA brackets and reweld them at the correct angle?
My question is really about the amount of work and specialized tooling needed to accomplish this. Would it be easier to grind the welds on the pumpkin (I think there are just 4 rosette welds) and then rotate the tubes in the pumpkin, and then cut off the passenger side UCA bracket and reattach to match the drivers side bracket (which is cast on the pumpkin)? Or would it be easier to cut off the knuckles and spring/LCA brackets and reweld them at the correct angle?
11-20-2012, 11:16 AM
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Year: 1999
Model: Cherokee
Engine: 4.0L
I have a Dana 30 high pinion, non disconnect XJ front axle. I. Need to raise the pinion angle by about 10° to get proper driveline angles. I want to maintain my proper caster angle.
My question is really about the amount of work and specialized tooling needed to accomplish this. Would it be easier to grind the welds on the pumpkin (I think there are just 4 rosette welds) and then rotate the tubes in the pumpkin, and then cut off the passenger side UCA bracket and reattach to match the drivers side bracket (which is cast on the pumpkin)? Or would it be easier to cut off the knuckles and spring/LCA brackets and reweld them at the correct angle?
My question is really about the amount of work and specialized tooling needed to accomplish this. Would it be easier to grind the welds on the pumpkin (I think there are just 4 rosette welds) and then rotate the tubes in the pumpkin, and then cut off the passenger side UCA bracket and reattach to match the drivers side bracket (which is cast on the pumpkin)? Or would it be easier to cut off the knuckles and spring/LCA brackets and reweld them at the correct angle?
11-20-2012, 11:25 AM
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Year: 1989
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Control arm adjustment would change the caster.
I'm wondering, why? Also if it's that heavily modified why keep the D30 and not swap in a D44 if you're going to do that much work.
I know nothing I said answered the question but it sounds like you already know way more than myself. My curiosity is just wondering what you're up to.
I'm wondering, why? Also if it's that heavily modified why keep the D30 and not swap in a D44 if you're going to do that much work.
I know nothing I said answered the question but it sounds like you already know way more than myself. My curiosity is just wondering what you're up to.
11-20-2012, 01:04 PM
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Adjustable control arms are a given, since the UCA mounts must move with the pumpkin.
I have 3" of lift, a front drive shaft that is a couple inches shorter than most, and a front TC output that is higher than most. A crawl box would help resolve most of those problems.
I am trying to keep this cheap and easy, and fast would be nice too. It's fast looking as though I should just get a Dana 44 and do a complete build on it. But that would cost hundreds of dollars more, and take me weeks to complete.
How bad will the coil curve be with the buckets rotated forward by 10°?
I have 3" of lift, a front drive shaft that is a couple inches shorter than most, and a front TC output that is higher than most. A crawl box would help resolve most of those problems.
I am trying to keep this cheap and easy, and fast would be nice too. It's fast looking as though I should just get a Dana 44 and do a complete build on it. But that would cost hundreds of dollars more, and take me weeks to complete.
How bad will the coil curve be with the buckets rotated forward by 10°?
11-20-2012, 02:41 PM
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Year: 1986
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Originally Posted by SeriousOffroad
At 3" of lift you don't need to worry about the pinion angle.
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11-20-2012, 03:34 PM
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11-20-2012, 03:49 PM
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11-20-2012, 04:29 PM
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Year: 1986
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