Some stock suspension calculations and measurements

[tobyw]

I suppose you had to pull the springs off to get the collars on and apply the preload. Probably just needs to seat the springs and settle a bit. When I put my 6100 bilsteins on they settled a good 1/2 - 3/4” after a few days. Did you just do this lift?

are the rear collars 2” tall? Did they give about 2” of lift?

Yep, had to dismantle the strut and slip the preload spacer on below the coil bucket:

I like the thought of them settling the coming days, but I struggle with how or why that would be the case given the car already has ~24k miles and should be pretty well settled out by now? With that said and to directly answer your question, yes I just put the lift on over the weekend so the install is less than 48-hours old as I'm typing this...

The rear collars that came with the SVC kit are only 1/2" tall, but I didn't install them. Instead I just re-drilled the lower mounting bracket:

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[87-Z28]

@tobyw

yeah I did mine with a cheap spring compressor. Kinda scketchy. I have mine sitting on the lowest perch (lowest preload). I am still burning through the OEM 32s. And didn’t want to apply the additional preload.

I doubt you can get them seated the same as original 24k miles did. I would give it a few days.

are you adding 37-38s?

 

[Fordified1]

The rear collars that came with the SVC kit are only 1/2" tall, but I didn't install them. Instead I just re-drilled the lower mounting bracket:

Great idea and gets it up out of harms way some too!

 

[tobyw]

@tobyw
are you adding 37-38s?

Yes, hoping to be on some 37's before the end of the month. I don't want to jump up to a 38 because I don't want to deal with the clearance issues at the back of the fenderwell... I don't mind the front body mount/crash bar chop idea, but I don't want to mess with the rear because that's where my mudflaps are mounted and I value them too much

Great idea and gets it up out of harms way some too!

Thanks! Wish I could say it was all my idea, but I unapologetically stole it from someone else

 

[Fordified1]

I was looking at the rear mounts when I installed my Eibachs thinking how dumb the placement was. There’s actually at least a couple inches up top, brilliant Ford engineers could have raised the whole assembly and got that lower mount in a safer place and not lost any travel.

 

[87-Z28]

@tobyw
Did your front springs settle a little?

 

[tobyw]

@tobyw
Did your front springs settle a little?

They did not... I took the front end apart again to verify the installation and that nothing was hung up or done wrong, and the bottom line is the SVC perch collars measure exactly 1.5" and translated to ~3" of actual lift on my specific Bronco. And for the record, I've already got an aftermarket bumper and winch installed...

The only thing I can possibly correlate this to is the spring rate of the coil itself??? I'm thinking a lighter rate coil, such as a 2.3L without the tow package, might see a different reaction to the additional preload than my 2.7L with the tow package? I don't know...

 

[Muffin Top]

Make	F Compressed	F Extended	F Travel	R Compressed	R Extended	R Travel
Sas Bilstein	17.0625​	23.3125​	6.2500​	18.6250​	26.1250​	7.5000​
ADS	18.0000​	24.6440​	6.6440​	17.7190​	27.7230​	10.0040​
King	18.5000​	24.6000​	6.1000​	18.5000​	27.0000​	8.5000​
Fox	18.7900​	24.2600​	5.4700​	19.2400​	27.2100​	7.9700​
Eibach 2.0	17.7700​	24.2000​	6.4300​			0.0000​
Icon	17.6000​	24.5300​	6.9300​	18.3600​	28.9000​	10.5400​
4WP	17.6875​	24.3125​	6.6250​	16.7500​	26.8750​	10.1250​

Do those front specs mean everyone is running Icon, ADS, 4WP, or Eibach ?

 

[Muffin Top]

 

[Sitruc_btb]

Do those front specs mean everyone is running Icon, ADS, 4WP, or Eibach ?

Those are just lengths for the different shock brands out there. Factory Squatch Bilsteins compared to aftermarket options.

 

[Muffin Top]

The guy in that video I linked above is into overlanding. That's why he advocates making front and rear travel more equal, by increasing the travel length of the front shocks, and by adding a rear swaybar that's extra-firm.


These two steps can get the front travel close to the rear travel (rear will always have more travel, even if the modifier mostly neglects the rear).

 

[Muffin Top]

binding has been observed in front CV joints at 24.6” extension, no binding at 24.3” with stock SAS running at 23.3”

Now I get it - this would seem to be the key data point

 

[nolimits]

Maybe I missed it, any reason the REAR data for the Eibach’s are missing? Sounds like we got a few people running that kit now, could we get measurements and update?

Also, has anyone saw this yet? They go over several kits before getting into some details on the Eibach’s so skip forward or be patient.

https://www.shocksurplus.com/blogs/news/ride-review-eibach-2-0-coilovers-on-the-ford-bronco

In particular what caught my attention was the issues with 37’s on the rear. Looks to be same/similar setup as @zuke. Also sounded like @mpeugeot was considering 37’s. Sounds like the Eibach kit is designed around 35’s.

Any of you running the Eibach’s experience this?

Also @Merc4x4 there was some reference to Bilstein’s harder valving that may help make it less noticeable than on the softer valving of the Eibach’s. Not a direct Icon comparison but seems others noticed it too.

 

[Fordified1]

Maybe I missed it, any reason the REAR data for the Eibach’s are missing? Sounds like we got a few people running that kit now, could we get measurements and update?

Also, has anyone saw this yet? They go over several kits before getting into some details on the Eibach’s so skip forward or be patient.

https://www.shocksurplus.com/blogs/news/ride-review-eibach-2-0-coilovers-on-the-ford-bronco

In particular what caught my attention was the issues with 37’s on the rear. Looks to be same/similar setup as @zuke. Also sounded like @mpeugeot was considering 37’s. Sounds like the Eibach kit is designed around 35’s.

Any of you running the Eibach’s experience this?

Also @Merc4x4 there was some reference to Bilstein’s harder valving that may help make it less noticeable than on the softer valving of the Eibach’s. Not a direct Icon comparison but seems others noticed it too.

Would depend on what you do with your Bronco. We just do slow technical stuff so no worries for me and they are great with35’s and should be fine with 37’s in slow stuff, but someone who does fast trails and jumps may want something with better shocks. I was a little bit upset that he didnt give them a good test on difficult technical rock crawling. They articulate very good.

 

[zuke]

Maybe I missed it, any reason the REAR data for the Eibach’s are missing? Sounds like we got a few people running that kit now, could we get measurements and update?

Also, has anyone saw this yet? They go over several kits before getting into some details on the Eibach’s so skip forward or be patient.

https://www.shocksurplus.com/blogs/news/ride-review-eibach-2-0-coilovers-on-the-ford-bronco

In particular what caught my attention was the issues with 37’s on the rear. Looks to be same/similar setup as @zuke. Also sounded like @mpeugeot was considering 37’s. Sounds like the Eibach kit is designed around 3


I've negated some of it by running much lighter rims (22lb) and somewhat lighter tires (68lb)than they are,. It's more the weight than size that matters. The tire they are running is 82lb, not sure on the weight of the rims, but I'd bet at least another 15lb there.

Maybe I missed it, any reason the REAR data for the Eibach’s are missing? Sounds like we got a few people running that kit now, could we get measurements and update?

Also, has anyone saw this yet? They go over several kits before getting into some details on the Eibach’s so skip forward or be patient.

https://www.shocksurplus.com/blogs/news/ride-review-eibach-2-0-coilovers-on-the-ford-bronco

In particular what caught my attention was the issues with 37’s on the rear. Looks to be same/similar setup as @zuke. Also sounded like @mpeugeot was considering 37’s. Sounds like the Eibach kit is designed around 35’s.

Any of you running the Eibach’s experience this?

Also @Merc4x4 there was some reference to Bilstein’s harder valving that may help make it less noticeable than on the softer valving of the Eibach’s. Not a direct Icon comparison but seems others noticed it too.

I've negated some of it by running much lighter rims (22lb) and somewhat lighter tires (68lb)than they are,. It's more the weight than size that matters. The tire they are running is 82lb, not sure on the weight of the rims, but I'd bet at least another 15lb there.

I think they've pushed the limits with heavy choices., I'm also doing rock crawling for the most part so not as likely to see some of the issues there.

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