DIY Metric Ton Leafs?

[Goose_XJ88]

Has anyone done a Junkyard upgrade with stock MJ pack and swapped overload springs from a full size truck? I did a search and spent a few hours looking but didn't come across anything. 

 

Just something that had crossed my mind to increase the payload of the MJ to the MT without having to track down MT springs or buy them new from General Spring (if they still make them) 

 

Thanks for the input and knowledge

 

[ghetdjc320]

Are you looking for lift or increased payload? There should be plenty of options that could fit. You will likely need to redrill the center pin hole as the MJ one is offset a bit. I’ve seen 2 different co figurations called “metric ton” springs. One was a 4+1 pack and another the 3+2. I suspect the 3+2 is how the factory did it but I may be wrong 

[89 MJ]

5 hours ago, ghetdjc320 said:

Are you looking for lift or increased payload? There should be plenty of options that could fit. You will likely need to redrill the center pin hole as the MJ one is offset a bit. I’ve seen 2 different co figurations called “metric ton” springs. One was a 4+1 pack and another the 3+2. I suspect the 3+2 is how the factory did it but I may be wrong 

I think it was a year thing. Early ones had the springs one way, later ones had it another way. If I recall correctly…

[jeff351]

FYI - General Spring has the metric ton leaf springs back in stock. I just ordered a pair.

[ghetdjc320]

2 hours ago, jeff351 said:

FYI - General Spring has the metric ton leaf springs back in stock. I just ordered a pair.

Can you let us know what the lift is when you install them? Assuming you’re coming from stock springs that is

[watchamakalit]

5 hours ago, ghetdjc320 said:

Can you let us know what the lift is when you install them? Assuming you’re coming from stock springs that is

I have these on the rear on mine. Can get measurements if you need. I think it was arrond 3.5-4" before settling. 4.5" re coils leveled it well. 3.5" fronts will give you factoryish rake.

[Crash]

On 12/11/2024 at 3:56 PM, jeff351 said:

FYI - General Spring has the metric ton leaf springs back in stock. I just ordered a pair.

This. I also ordered a pair . I currently have a bastard pack with a mix of 2 pair of MJ springs. 

Added some RE coils that give about 4.5 inch of lift and the speings aren't tall enough.  

Hopefully this will even it out.

[jeff351]

On 12/12/2024 at 3:34 AM, watchamakalit said:

I have these on the rear on mine. Can get measurements if you need. I think it was arrond 3.5-4" before settling. 4.5" re coils leveled it well. 3.5" fronts will give you factoryish rake.

I agree, probably 3.5-4". here's mine freshly installed and drove about 50 miles today. Factory shackles. Rides nice though. 

I have a 2" spacer and some unknown coils off the donor XJ in the front, and it sits with a slight rake.

[Eagle]

On 12/12/2024 at 3:34 AM, watchamakalit said:

I have these on the rear on mine. Can get measurements if you need. I think it was arrond 3.5-4" before settling. 4.5" re coils leveled it well. 3.5" fronts will give you factoryish rake.

 

Then those are not metric ton springs, they're lift springs. The factory metric ton springs didn't ride any higher than standard 4WD springs. I have to say that if I ordered what I thought was a set of replacement springs for my stock MJ and the new springs produced a 4-inch lift over stock ride height, I would NOT be a happy camper. But too many people have reported that the General "MT" springs result in a 3" to 4" lift. I'd rather roll my own with junkyard leaves than pay premium prices for something that doesn't do what it's supposed to do.

[watchamakalit]

9 minutes ago, Eagle said:

 

Then those are not metric ton springs, they're lift springs. The factory metric ton springs didn't ride any higher than standard 4WD springs. I have to say that if I ordered what I thought was a set of replacement springs for my stock MJ and the new springs produced a 4-inch lift over stock ride height, I would NOT be a happy camper. But too many people have reported that the General "MT" springs result in a 3" to 4" lift. I'd rather roll my own with junkyard leaves than pay premium prices for something that doesn't do what it's supposed to do.

I can't argue with that. I purchased mine wanting the lift. But if I was after metric tons with factory height I would have gone a different route. Me comments are solely related to my experience with the general springs.

[Billabob]

2 hours ago, Eagle said:

 

Then those are not metric ton springs, they're lift springs. The factory metric ton springs didn't ride any higher than standard 4WD springs. I have to say that if I ordered what I thought was a set of replacement springs for my stock MJ and the new springs produced a 4-inch lift over stock ride height, I would NOT be a happy camper. But too many people have reported that the General "MT" springs result in a 3" to 4" lift. I'd rather roll my own with junkyard leaves than pay premium prices for something that doesn't do what it's supposed to do.

This is exactly what I'm dealing with now, my comanche looks like a clown car with 3" more lift in the rear. Tossed the old ones so I guess I'm paying someone to re-arch. They should really update their description...