Modification weight and acceleration issue -
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post #1 of 5 Old 12-29-2019, 04:38 PM Thread Starter
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Modification weight and acceleration issue

Hey guys! For Christmas I received a new EAG steel bumper and a pair of Smittybilt steel steps. After getting them put on and taking the Jeep for a spin, I noticed that the acceleration is rather sluggish.

Now I realize that any added weight is going to cause some performance issues, but the overall weight of the new items added is roughly 140lbs (about the weight of a smaller passenger), which seems like it should be negligible. Is the slower acceleration due to how low the weight sits and how it’s proportioned?

Just curious as to what you guys have to say. Thanks!

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post #2 of 5 Old 12-29-2019, 05:01 PM
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i had to look at your only other post to see what you are driving. If its a JL wrangler then i would say no that is not enough weight to have any huge lose of power. unless we are doing 1/4 mile times and counting 1/10s. Now if it was say some old jeep that had say 55hp like they did back in the 40s. yea every pound starts to add up fast.

If you have JL you might get more to SEE a post using the section for the year type jeep you own. Street jeep is one of deadest these is. Since Jeep and street is somewhat an oxymoron, at least in my vernacular.

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post #3 of 5 Old 12-31-2019, 11:31 AM
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Divide the rear wheel horsepower into the total weight. That will give you the power-to-weight ratio.

My YJ weighed in at about 2750 lbs. pushing roughly 255 hp...about 10.7 to 1...for comparison recall that the Pontiac GTO, Chevrolet Camaro, Ford Mustang netted about 10 to 1 in high performance street trim. After adding body armor, heavier wheels, etc. I'm roughly 11.4 to one. THAT is a noticeable change in take-off performance.

140 lbs distributed well as 222Doc noted is kind of minor, but if it's mostly up front, you won't get the 'rise' from acceleration and that can change your perception of how much it is accelerating (but it will dive more on braking).

If you do the math...and only go up a few tenths, you're not hurting.

Last edited by gutthans; 12-31-2019 at 09:36 PM.
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post #4 of 5 Old 01-13-2020, 08:54 AM
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It's hard to believe adding 65 kilograms would result in a noticeable performance difference.


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But I still wouldn't trade it for a Coupe DeVille."

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post #5 of 5 Old 01-24-2020, 12:34 AM
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Any other changes? Different tires? Larger or LT sizes?

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