KYB MonoMax look good. I will get them ordered and combine that task with my replacing glow plug harnesses project. Thanks Pirate

 

Cool deal,

I look forward to a drive report.

So, since you first posted this those front bumps have been bugging me. I know they are Dormans and sold as kExcursion replacements but they look considerably smaller then the stock ones. Do you happen to have one of your old ones ? If so could I get you to take a pic of the old one held up next to the new one for comparison ?

I see Dorman sells what looks to be a larger one that looks closer to the stock size. If this were my Ex and I was running the stock ride height that utilizes the bump stop as an intregral part Of the limited suspension travel I think a larger stop would would be in order. This would go a long ways to making the limited travel be more useful.

 

The cone shaped one is actually a f250 replacement but since it technically will bolt onto the excursion some Dorman data entry monkey listed it as an excursion part.

Since the trucks sit higher and have more suspension travel the bump stop is not engaged as frequently as it is only needed for a short duration.

On the ex the bump has a longer duration and a higher frequency of use. Therefore it has a different spring rate. You can clearly see the difference in shape and size.
More rubber = more spring.


I'd recommend you switch to the larger one.

 

Going back to your " adding some coilover springs or a coil spring bump stop"

A company called Timbren makes a rubber spring ( basically a large bump stop )
these guys are well known for their trailer and semi truck rubber springs so they are specialist at this. If you are interested in going this route I will call them and discuss the merits and application for you.

Timbren Industries Inc. Suspension Products ? Timbren Industries Inc. Suspension Enhancement Systems and Premium Trailer Suspensions

 

Thanks for all the help. My bump stop is definitely that cone shaped one you showed first. So the cylindrical one would actually be the proper or better one? Neither of my 2 4WD Excursions ever had front bump stops. They were always gone when I got them. The cylindrical one you show makes more sense to me because I can understand how that would compress as a spring would due to it's design. This cone one is just a hard chunk of rubber. It is a fail safe against metal to metal but after reading your suspension explanation, I don't see this as anything that mitigates an impact. I can't imagine there being any travel to this cone shaped one as it certainly is not any technologically advanced high tech elastomeric compound NASA thought up. It might as well be a rock, a rubber rock, but a rock none the less. I looked at the Ford catalogs online where I usually buy my parts. They would list several part numbers but no pictures and no detail on which one was the right one for my VIN identified vehicle.
Changing to the other bump stop makes a lot of sense to me. I'll order those with the shocks. Maybe my dog will like chewing on these but I don't want him to break a tooth.

 

Here is the OEM front bump for comparison. The large Dorman looks similar.
Dorman claims they are rubber so that would be similar to the OEM material but since we don't know the durometer of either the ford or the Dorman it's a bit of a guess. Hopefully they are close.


If you can find new ford ones that is what I would get. Dorman would be my second choice.

 

I was looking on different sites, including Ford, none of them say the same thing. The one diagram I found doesn't look anything like a bump stop. This is like performing brain surgery blind folded. Is there some law of the universe that man must go through hell to find a Ford part# for the correct part? Will keep hunting

PS-The dorman site lists the cone as the "Rear Bump Stop" and then lists below that
Position: Front

 

Gotsta have the Google foo


Ford Part No.: YC3Z-3020-AA

Bumper | Genuine Ford | YC3Z-3020-AA

 

Thanks man. I even had that part number but could not find a freaking picture of it. Your foo is powerful. Next paycheck will be those. Just ordered KYB monomaxes all the way around

 

Never thought a hunk of rubber would lead down such fascinating places. I emailed Ford and Tasca. They sent this back

The correct part is 2C7Z-3020-AA
Bumper | Genuine Ford | 2C7Z-3020-AA


Kind Regards,
aimee
Tasca Automotive Group

Basically its the one I have. Perhaps that was an aftermarket Pirate. I like it's concept better

 

No, the one I listed came on Excursions at least up through 01.

The "2" your part number starts with indicates to me that it is a design change. I'm not sure if all Excursions came with the one I listed and the new number is a service part number or if some Excursions came with that style stop.

Either way, get your new shocks on and take it from there I guess.

 

Just an update. I have the front KYB Monomax shocks installed. Feel much more feedback from the steering as opposed to bouncing along. Since I just did it today, I won't throw out any glowing accolades yet. After a couple of weeks I'll know how good they are. The X definitely had the originals. When no manufacturer will stamp their name on one, it might be a hint. There were a few shock "tricks" I had to learn so it took longer than I thought--about 2 1/2 hours lug nuts to lug nuts. One suggestion, which is probably common knowledge to many, when you take the shock out of the box some have pull ties to keep them compressed. These did not, though I thought they looked compressed enough. PIA of jacking up frame and letting down axle to get to right height. Have a bad shoulder and I couldn't just compress it while it was attached at the bottom. The second one I took a large screw driver and stood over it and compressed it after which I put pull ties to hold it there. Had it not been for the freaking major rusted lower mounting bolt, that one would have taken less than 30 mins just taking off the old shock and putting on the new. Perhaps my experience will save someone else some time.

BTW on my 04
Bolt head lower mount 15 mm
Nut lower mount 20 mm
Top mount nut 18 mm

 

now that you got the fronts on the rears should be a breeze.

The string trick works well, sorta surprised they didn't come that way.

Look forward to your feedback once you get a chance to put some miles on with all 4 installed.

 

Couldn't help myself-I put the rears on early the next AM

 

Ok just did an 180 mile trip. Nothing but good things to say about the shocks. Handles and feels much better. Obviously I still have that little bit of play in the steering but not much of an issue. The dual steering stabilizer has helped. It gives me a little more resistance in the steering which helps me not to move out of the dead zone so easily. It doesn't drift but I was fighting myself by moving the wheel enough to make it steer when it didn't need to do so because it was sooo easy to move. It dumped a bunch of snow here in MT today and I found the stabilizer helped snow driving to not pull the steering wheel in a different direction. Red Head is still on the list.
The Timbren suspension makes a lot of sense but at the moment I must save my pennies...rather expensive. Also time to buy a Deer Killer bumper