~4" Lift In Back = Nasty Noise In Drive Line
Apr 20, 2007 | 03:43 PM
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~4" Lift In Back = Nasty Noise In Drive Line
So I went and got me some free coils from a jeep at 4wp today. I figured I'd go ahead and try that mod of putting coils ontop of the left pack.
Well, I forget what type of jeep they came off of (CJ?) but they're the 14" tall ones, alot stiffer than TJ coils (so probably 250# coils), and they're about 5-6" in diameter.
My leafs were sittin totally on the overload spring, and from the top of the pack to the frame, there was only about 7.5-8" of space, so with these coils I was hoping to get right at 10-11" of space between the leaf and frame.
Now I had origionally planned to use the smaller TJ rear coils (12" 150#), but these were all I could find (for free). I didnt actually think I was gonna be able to get em on, but I took off the rear shackles, dissed the shocks from the rear, and was barely able to compress em in over the stoppers.
Anyhoo, I got em in, and to my surprise it sat a lot higher than I though. I measured 12.5-13" from the leafs to the frame now.
The back now sits a good 4" or so higher than the front. I think it looks pretty cool.
But... I guess now with so much lift in the back, the driveshaft (or whatever it is. I caint seen nothin noticable) is extended a bit too far. When accelerating in 2nd gear, or let off the gas while in any gear, I get a really nasty vibration and sound from somewhere in the driveline. I caint notice nothin thats plain to the eye, so I'm wonderin what yall think the issue could be.
Yeah, I defintely either plan to cut the coils down a good 2" or so, or find me some smaller TJ rear coils, but it'd definitely be nice to know what that sound is. Kinda nerve wracking...
Well, I forget what type of jeep they came off of (CJ?) but they're the 14" tall ones, alot stiffer than TJ coils (so probably 250# coils), and they're about 5-6" in diameter.
My leafs were sittin totally on the overload spring, and from the top of the pack to the frame, there was only about 7.5-8" of space, so with these coils I was hoping to get right at 10-11" of space between the leaf and frame.
Now I had origionally planned to use the smaller TJ rear coils (12" 150#), but these were all I could find (for free). I didnt actually think I was gonna be able to get em on, but I took off the rear shackles, dissed the shocks from the rear, and was barely able to compress em in over the stoppers.
Anyhoo, I got em in, and to my surprise it sat a lot higher than I though. I measured 12.5-13" from the leafs to the frame now.
The back now sits a good 4" or so higher than the front. I think it looks pretty cool.
But... I guess now with so much lift in the back, the driveshaft (or whatever it is. I caint seen nothin noticable) is extended a bit too far. When accelerating in 2nd gear, or let off the gas while in any gear, I get a really nasty vibration and sound from somewhere in the driveline. I caint notice nothin thats plain to the eye, so I'm wonderin what yall think the issue could be.
Yeah, I defintely either plan to cut the coils down a good 2" or so, or find me some smaller TJ rear coils, but it'd definitely be nice to know what that sound is. Kinda nerve wracking...
Last edited by SwampThing; Apr 20, 2007 at 03:44 PM.
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