Mopar lift on sport s 6sp, will my tongue weight go up for trailering??

[Jt-wrx]

So trying to find out spring rates of the 2" mopar thats about to hit my nice and soft sport s 6 spd with it's 4k tow cap and 400 lb tongue weight. From searching it sounds like this mopar lift has only one part number and goes on an awful lot of max tows and rubi's...does this mean it's sprung quite a bit heavier than my wimpy sport s? Is there any specs on those springs yet?

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[eaglerugby04]

Theoretically I think you are right with the spring portion.

However

Without the max tow package you still have limitations of the engine/transmission cooling that are upgraded as part of the package. The Max Tow also comes with the upgraded axels and the 4.10 gear ration that all support the ability to tow higher.

While you will be preventing sag, you have a number of other issues that would still lock you into a lower safe tow rating.

 

[Jt-wrx]

should be a good thing in my case, i have a lightweight cargo trailer camperized build that runs a little nose heavy, pulls nice but overall will be likely no more than 3000 lbs full of gear (spec was 1800 as i bought it) so we are good on the tow rating, the extra spring rate should help with the balance i have

 

[eaglerugby04]

Check out this thread. Relevant to what you are looking to do with spring swaps.

https://www.jeepgladiatorforum.com/...tongue-weight-yikes-no-wonder-the-rake.25619/

 

[Jt-wrx]

Thank you, this thread is in part inspired by that. I could see guys being disappointed by heavier springs if they are loving the jt empty with the sports/overlands and they go up in rates with the lift. In my case the lift will be beneficial in this area, was just curious to confirm it. It's interesting how much detailed tech info is available already but a couple things still a mystery, like these spring rates and the axle differences in spline counts to know if truetrac's will work or not. New vehicle growing pains.

 

[Oscar Indy]

Tounge weight is a percentage of tow capacity. Capacity has little to do with the springs. (Payload on the other hand is mostly rear spring design)

Tow capacity is based on test that involves towing a specific weight up a specific hill blaw blaw blaw blaw your tow capacity might actually go down because you are going up in tire size.
Tow capacity in the manual is limited by torque ( changes with tire size) and clutch holding ability. The clutch from what I'm told by my buddy who's in the decision process for Wrangler and gladiator is the weak link and the reason for the drastically lower capacity of the manual.

So. With the Mopar lift you could see slightly less squat but I doubt it. The spring rate is probably very similar between the two with it being same brand. Especially since your "tounge weight" is just a percentage of tow capacity

 

[WXman]

Correct me if I'm wrong but doesn't the Sport with manual trans. have the highest payload ratings you can possibly get in a Gladiator? If so, then going with any other coil spring will decrease your load carrying.

Legal tongue weight, payload, GVWR, etc. are all things that cannot be altered. I'm simply speaking from a practical point of view. I'd keep the Sport coils and just add spacers if it were I.

 

[Jt-wrx]

ya i was just curious about squat, increase or decrease from sport s manual, from what i read i have a 439 rate spring, then theres 441 for the auto's with tow pkg then 444-5 or something for the max tow/rubicons? Something to that effect, with the lower number being the least amount of spring rate. So by reduction it would appear these mopar lifts must have a rate similar to max tow/rubicons and should reduce squat compared to what i have now...that's how i'm seeing it so far

 

[Jt-wrx]

Tounge weight is a percentage of tow capacity. Capacity has little to do with the springs. (Payload on the other hand is mostly rear spring design)

Tow capacity is based on test that involves towing a specific weight up a specific hill blaw blaw blaw blaw your tow capacity might actually go down because you are going up in tire size.
Tow capacity in the manual is limited by torque ( changes with tire size) and clutch holding ability. The clutch from what I'm told by my buddy who's in the decision process for Wrangler and gladiator is the weak link and the reason for the drastically lower capacity of the manual.

So. With the Mopar lift you could see slightly less squat but I doubt it. The spring rate is probably very similar between the two with it being same brand. Especially since your "tounge weight" is just a percentage of tow capacity

My cargo trailer has the axles a little further back for anticipation of an atv or motorbikes, and i've simply built an adjustable height queen bed frame back there, kids sleep underneath (queen bunk so to speak) so i do try to offset and get as much gear back there for travel but nice to keep sleep ready so we can sleep where we park on a longer trip and get a headstart the night before. I may put bike rack hitch off back to help get some weight out back, but as it is with all the kitchen stuff i built into the front end, it's nose heavy. I have the spare on the hitch so i will likely move to one of the cargo doors out back and get some leverage off it. The jeep won't be as forgiving as my 1500 was in this area, it had a 7200 lb tow cap. That said, this trailer will still be about 3000 lbs loaded, just nose heavy.

 

[WXman]

ya i was just curious about squat, increase or decrease from sport s manual, from what i read i have a 439 rate spring, then theres 441 for the auto's with tow pkg then 444-5 or something for the max tow/rubicons? Something to that effect, with the lower number being the least amount of spring rate. So by reduction it would appear these mopar lifts must have a rate similar to max tow/rubicons and should reduce squat compared to what i have now...that's how i'm seeing it so far

I've posted a lot of that info on forums over the last several years, but I will caution everyone who reads this that there is no confirmation that the actual spring rate increases as the part number increases. It's possible that FCA simply uses different part numbers for different coils, i.e., taller vs. shorter, linear vs. progressive, etc. There's more to a coil that just spring rate.

But I think you're on the right track by thinking about all this and considering everything before making a switch. What's the payload number on your door jamb placard? If it's anywhere near 1,500 I would personally NOT swap out the coils.

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