2020 JLUR Diesel Curb Weight

ItsNo4RE

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We need stiffer spring options, no?
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Themistocles

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We need stiffer spring options, no?
Yes I strongly believe that we do. Assuming the same length spring as a 3.6, I would think that a dual rate with a SR of 165 (minimum) up to about 200 (maximum) is where we need to be. I think RK with 175 / 175 might be about right. Though with some of the CAT scale numbers that are coming in, Clayton with their 188 front might be closer.

Very generally it should compress the same amount as a 3.6's springs do. To do that you need to increase the rate.

I suspect that for liability reasons a company could not market a spring for weights over GVWR. So, were I MC I would do the math / testing for a vehicle at 6100lbs...and produce a spring that was just a bit stiff for that weight. From what I can tell MC's current springs are designed for a vehicle of about 5400lbs.

The up side of this approach is that all the overland (non-diesel) folks would probably want that spring as well...increasing the customer pool. Also as far as I can tell this would distinguish MC from just about every other company in offering a different rate (the right way) versus just longer (the easy way).
 
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ItsNo4RE

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Yes I strongly believe that we do. Assuming the same length spring as a 3.6, I would think that a dual rate with a SR of 165 (minimum) up to about 200 (maximum) is where we need to be. I think RK with 175 / 175 might be about right. Though with some of the CAT scale numbers that are coming in, Clayton with their 188 front might be closer.

Very generally it should compress the same amount as a 3.6's springs do. To do that you need to increase the rate.

I suspect that for liability reasons a company could not market a spring for weights over GVWR. So, were I MC I would do the math / testing for a vehicle at 6100lbs...and produce a spring that was just a bit stiff for that weight. From what I can tell MC's current springs are designed for a vehicle of about 5400lbs.

The up side of this approach is that all the overland (non-diesel) folks would probably want that spring as well...increasing the customer pool. Also as far as I can tell this would distinguish MC from just about every other company in offering a different rate (the right way) versus just longer (the easy way).
I agree... a long time ago, I built an autocross vehicle out of a focus station wagon (dont laugh). There was a company that I had custom make me springs... this was in 2005 so I cant remember for the life of me who that co. Was. There are companies that can make it, they just needed the weight if the vehicle and a stock spring... in this case we would need to send a spring for a lifted jeep.
 

NCJL

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AEV has diesel specific springs. I think they make all their springs on the heavy side. I’m fortunate enough to have a JLUR 3.6 and a JLURD. The JLUR has AEV lift with many upgrades. When loaded for a trip with trailer attached I’m very close to #6,000. The trailer is right at #3,500 w/350 tongue weight. The suspension/handling is excellent. Actually feels better loaded. The power is the only complaint. Power is the reason we purchased the JLURD.
The JLURD is still stock. I will weight later today.
I think a diesel specific spring is the only way to go.
 

Jteakus

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That's a heavy girl!
I knew they were hefty but not this much. Weight is usually an indicator of strength in a vehicle so as long as it steers, brakes and accelerates well shouldn't be too much of a problem. Don't get me wrong, light is might in an off-road vehicle. I always use the "push an empty wheelbarrow up a hill now load it with 500 LBS and do the same" analogy. However, I see no way to to lighten my JL,. Fact is I'm steadily adding pounds to it.
 

Rangemaster

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Ok, I have a question. Changing the axles would this change the gvw on the jeep and would local law enforcement be able verify this if pulled over and weighed. Reason why I am asking I was pulled over and weighed and was given a ticket for being over the gvw on a pickup.
 

GtX

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Ok, I have a question. Changing the axles would this change the gvw on the jeep and would local law enforcement be able verify this if pulled over and weighed. Reason why I am asking I was pulled over and weighed and was given a ticket for being over the gvw on a pickup.
Did the cop weigh your vehicle?
 

NCJL

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AEV has diesel specific springs. I think they make all their springs on the heavy side. I’m fortunate enough to have a JLUR 3.6 and a JLURD. The JLUR has AEV lift with many upgrades. When loaded for a trip with trailer attached I’m very close to #6,000. The trailer is right at #3,500 w/350 tongue weight. The suspension/handling is excellent. Actually feels better loaded. The power is the only complaint. Power is the reason we purchased the JLURD.
The JLURD is still stock. I will weight later today.
I think a diesel specific spring is the only way to go.
CAT scale says #4,960 for the JLURD w/topped off fuel, 100% stock no passengers.
 
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Ok, I have a question. Changing the axles would this change the gvw on the jeep and would local law enforcement be able verify this if pulled over and weighed. Reason why I am asking I was pulled over and weighed and was given a ticket for being over the gvw on a pickup.

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Themistocles

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Interesting. You are 100lbs lighter than every other vehicle I have noted so far...and some of them were soft tops. So far every one has ranged 5040 - about 5100. And the FCA published curb weight is in that range as well. There is nothing I can think of in the option sheet that should make that much of a difference. Thank you...new wrinkle add.
 
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AZ-Chris

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Themistocles

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No. Factory plastic bumpers.
[/QUOTE]

That is it...I thought somebody who came in around 5040 had plastic as well. So 4960lbs for plastic...do you have the tow package?
 
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