StylerG
NAXJA Forum User
- Location
- Oklahoma City
HP d30, 4.56 gears, TNT truss so mounts aren't stock. Custom front shaft, RE adjustable uppers and lowers, drop brackets, 5" lift measured dirty way.
Ok so I've been fighting a drivability issue as I'm wanting to take jeep off trailer and drive to more trails-it drives like my caster is too little, but I can't figure out the cause. I've sat another jeep with the same setup next to it and pulled numbers and can't repeat my problem. Any insight would be great! Almost to the point to scrap the housing and build another.
Front diff reads 81 degrees, both sides, on flat ground. According to Go-Jeep that would put my caster at 0, which it drives like.
My pinion is at 7 degrees (or 83 however you want to slice it).
My driveshaft is at 9 degrees, and will vibe on hwy above or below this setting.
My ball joints read 4 degrees from the top.
My confusion is the correlation between my front cover readings and my pinion. I should be able to run 4.5-5.5 degrees of caster and still be within spec on my driveshaft angle, but I can't. I've tried rebuilding shaft, new bearings in tcase and running without a front shaft and what I assume to be the correct caster. Jeep drives great with caster set by Go-Jeeps method but leaves my driveshaft 6-7 degrees off of perfect which in my searching nobody is doing successfully.
So what am I not seeing? What needs to change? What route would you go to alleviate problem? I can't figure out on a d30 with 5" of lift why I can't get even closer to spec.
Also-I've thought about rotating knuckles but at this point that involves dissecting a truss, and doesn't seem to find the issue causing it.
Thanks for the help
Ok so I've been fighting a drivability issue as I'm wanting to take jeep off trailer and drive to more trails-it drives like my caster is too little, but I can't figure out the cause. I've sat another jeep with the same setup next to it and pulled numbers and can't repeat my problem. Any insight would be great! Almost to the point to scrap the housing and build another.
Front diff reads 81 degrees, both sides, on flat ground. According to Go-Jeep that would put my caster at 0, which it drives like.
My pinion is at 7 degrees (or 83 however you want to slice it).
My driveshaft is at 9 degrees, and will vibe on hwy above or below this setting.
My ball joints read 4 degrees from the top.
My confusion is the correlation between my front cover readings and my pinion. I should be able to run 4.5-5.5 degrees of caster and still be within spec on my driveshaft angle, but I can't. I've tried rebuilding shaft, new bearings in tcase and running without a front shaft and what I assume to be the correct caster. Jeep drives great with caster set by Go-Jeeps method but leaves my driveshaft 6-7 degrees off of perfect which in my searching nobody is doing successfully.
So what am I not seeing? What needs to change? What route would you go to alleviate problem? I can't figure out on a d30 with 5" of lift why I can't get even closer to spec.
Also-I've thought about rotating knuckles but at this point that involves dissecting a truss, and doesn't seem to find the issue causing it.
Thanks for the help