rear leaf spring ??
Rear
Front
Front
what spec would you like to know ?
Rear
Front
My question on the type of springs is just one of the many suspension system questions I have ... but more on that later. What I am trying to decipher is what code these stock springs are so that if I choose to replace them (say w/X, V or others) what difference it might make in the ride and hub-to-fender distance.
As stated above, the question on the code/specs for my current springs is just a piece of information to see where I go to improve my suspension (and it needs improving). I was going to make a reply post on the thread at https://www.ford-trucks.com/forums/1...ift-kit-2.html or at https://www.ford-trucks.com/forums/1...absorbers.html where you provided a lot of information and advice. But since we are here, let me lay out what I am facing in this post (and if off topic, I am glad to move it to one of those two).
A month ago I acquired a 2005 EX Limited 4X4 6.0L Turbo Diesel with 152,000 miles. Tires are Nitto Terra Grabber LT285/65R20 (no tire rub on wheel well). Measurement from center of the hub to the top of the fender well is 25" on all four corners. I have been spending time under it trying to understand what may have been done to the suspension by prior owners (getting in and out from under it with this 70 year old body is no easy task, but I do it!). The first suspected finding is that the suspension has a 1.5 to 2" lift (see rear and front photos below). You might not say "Wow, what a Sherlock", given that the 25" hub-to-fender measurement is about 1.5" more than stock. The rear seems to have a 1.5"+ block added and in the front it looks like it was achieved by adding extra (short) leaf springs. I am guessing this is how it was done by comparing the photos I took to a Ford 2005 Excursion manual that has the suspension graphic drawings.
OK, so far so good for the background. But here comes the problem. A couple weeks ago while slowly going over a speed bump when the front end came down from the speed bump I felt a hard 'thump'. I suspected right away that it had bottomed out (duh!). After getting home I went under the front end to investigate and at first noticed that the bump stops were missing. Aha, need to replace them. But on second look I noticed that the travel distance for the suspension to hit the chassis where the bump stops had been was about 5 inches BUT that the Bilstein shock absorber next to it could only compress about 2.5" before it would bottom out. So, the obvious conclusion being that the shock absorber was bottoming and the hard thump was not caused by the missing bump stops.
So from there I went to investigate the shocks. Turns out the front shocks are Bilstein 5100 Series BE5-6245-H5 which I believe are the same as their 33-185545 (newer part number). But these are for a 4 to 6" lift, I barely have a 2" lift! No wonder they are bottoming out. So today I crawled under the EX again but this time to look at the rear shocks. While I could not find the stamped Bilstein number I did measure the travel distance for the shock to bottom out ... it was similar to the front, 2.5" in their case. So I am assuming these Bilstein are their 33-236964 (or whatever the old par number was) for a 3-5" lift. I read somewhere in this forum that a 4 to 5" is an ideal figure.
I am assuming at this point that this EX was lifted 4"+ at some point before I bought it and then was lowered prior to my purchase without changing out the shocks or whoever replaced the stock shocks when the current <2" lift was done just slapped these on not knowing what they were doing.
So in thinking about a fix my first constraint is that I do not want to lift the EX any further. That is, the 25" measure from hub center-to-fender is as high as I like. My intended use of this EX is for family transport and occasional boat towing (6,500 pounds) to the dock, a 5 mile round trip. So the easy thing to do is to change the shocks. Like to stay with Bilstein so their 4600 series 24-185462 for the front and 24-185645 seem to fit the bill. But please comment on this. The other alternative I can think of is somehow to remove the current lift, replace the springs with some that will not raise it about the same as the current lift, and replace the shocks.
Clearly the latter would be more expensive but worth considering. I am sure there may be other approaches and that is why I am here with this post. You feedback is important, so thanks in advance.
Photos follow ...
...
Rear lift. Bit out of focus but 1.5" block can be seen. Looking forward.
Rear lift. Looking aft.
Front lift, wheels on the ground showing shock absorber.
Front lift, another view. Notice missing bumper.
Front shock showing partial(6245 H5) number.
Front shock with another number (102841) - Seems like old numbering system
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I made a longer post about the suspension issues/questions and added photos last night ... just waiting for Mod approval before it shows up (I think, assuming I did it right).
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When you say "Remove the front blocks", Are the "front blocks" all four of the short leafs shown in my photo or just some of them? The only thing I will need to check whether by removing any or all will cause the tires to rub when turning. Right now they do not rub but it is close. Removing the rear aftermarket block should not be an issue with the tires. Thanks.
you will need new ubolts,
pmfsuspension.com has the good ones
if your tires do rub it will likely be against the rear inner fender liner which is easily pulled back with a zip tie. no more rub,
It will take me a month or so to get all this suspension work done, I will then post results and photos here. Thanks for the suggestions. After this project is done I will tackle the steering gear box








