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Axle wrap update - 2013 F150

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Old 03-29-2015, 04:08 PM   #1
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Default Axle wrap update - 2013 F150

I have just replaced the factory FORD rubber bump stops in the rear leaf pack with 2 sets of Energy bump stops. The 9132's are at the back of the spring pack and the 9102's are at the front. What this does is more or less couple the upper and lower halves of the spring pack. Here is what it did;


The axle wrap or shudder that I would normally feel when accelerating away from a stop now appears to be gone. I did not say cured, just gone. It may come back at a later date or it may re-occur when towing or it may re-occur when heavily loaded.


The drive shaft now enters the differential at a straight line. I find this remarkable considering that there is very little if no pressure being exerted by the new bump stops. As a matter of fact only the bump stops on the drivers side are actually touching.


The truck does ride a little rougher but not really a whole lot more. I find that it now rides more like a truck than a car. I am sure that the HD suspension is rougher but I have never tried it.


This part is tough. The truck feels more planted when accelerating away from a stop. It used to feel kind of squishy but now it feels solid.


I am not saying that this is a cure all but for 20 bucks and an hour of your time how can you not try it.
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Old Yesterday, 07:32 AM   #2
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Quote:
Originally Posted by Boulevard View Post
I have just replaced the factory FORD rubber bump stops in the rear leaf pack with 2 sets of Energy bump stops. The 9132's are at the back of the spring pack and the 9102's are at the front. What this does is more or less couple the upper and lower halves of the spring pack. Here is what it did;


The axle wrap or shudder that I would normally feel when accelerating away from a stop now appears to be gone. I did not say cured, just gone. It may come back at a later date or it may re-occur when towing or it may re-occur when heavily loaded.


The drive shaft now enters the differential at a straight line. I find this remarkable considering that there is very little if no pressure being exerted by the new bump stops. As a matter of fact only the bump stops on the drivers side are actually touching.


The truck does ride a little rougher but not really a whole lot more. I find that it now rides more like a truck than a car. I am sure that the HD suspension is rougher but I have never tried it.


This part is tough. The truck feels more planted when accelerating away from a stop. It used to feel kind of squishy but now it feels solid.


I am not saying that this is a cure all but for 20 bucks and an hour of your time how can you not try it.
Never mind I looked up the part you mentioned you are referring to the bump stop rubber bushing in the leaf pack my mistake.

Last edited by coley909; Yesterday at 07:35 AM.
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Old Yesterday, 12:21 PM   #3
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I'm confused too. You keep saying bump stop but you must be talking about something with the leaf packs? Can you provide more information or pics? If you've curbed the inherent axle wrap I'd be interested in more details please!

For the record, here are the stock F150 bump stops:
Click the image to open in full size.
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Old Yesterday, 05:56 PM   #4
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The bump stops that I am talking about go IN the spring pack between the upper and lower halves of the pack. If you look up the part number you will see what I mean. I have had these stops in for a couple of days now and there is definitely a difference.


The bump stop that you have in your picture is for the axle and stops the axle from 'bumping' into the frame....nothing to do with the suspension.
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Old Yesterday, 06:02 PM   #5
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I've never heard the term bump stop used for anything other than what xcntrk posted.
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Old Yesterday, 07:05 PM   #6
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http://www.energysuspensionparts.com...Shock-Eyes.asp


Now you have
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