Gang:

Just finished installing a set of Eibach progressive rate springs, cam bolts, Herb's washers, lubed the steering stops for good measure. Nice to do it all at one shot. **install tip below

However, upon lowing the vehicle and giving it a quick glance underneath, I noticed the lower A-arms are resting on the bumpstops as illustrated in the following image.



Pre-installation height from floor to top fo the fender lip was 32 3/4". After a CAREFUL 10 mile drive, the number came to 30 3/4" (possible more due to issue illustrated above). Don't worry Spike, I'll update the list with proper measurements when the bumpstop issue is resolved.

Obviously, this is in need of attention. For those of you having dropped the front of your truck, any assistance would be greatly apreciated

How much clearance should there be between the lower a-arm and the bumpstop? The truck is daily driven, drag raced about once a month, and tossed into corners where and whenever possible.

What is the recommended method of trimming the bumpstops and/or are there replacement units available?

***install tip.

It is very easy to use the jack to support the a-arm and remove the upper a-arm bolts then SLOWLY lower the jack. I used a chain as a safety precaution but the spring came out VERY easily.

Again, any tips would be greatly appreciated.

Bob

 

You need some shorter bumpstops. I've got some Roush one's new in the box I could let you have for $15. They are the same ones included in their lowering kit.

 

Umm you sure you have the right springs. THe coils look like they are touching to me.

 

I did my Eibach springs yesterday and they look just like the pics above, actually a little worse. Looks like more presure on the bump stops then the picture. This can't be good, what gives? Could there be a bad batch of eibach springs out there? I really worried.

 

The Hotckiss and Roush springs will ride on the stock bump stops too. Get some shorter bump stops, or get a hacksaw and cut a inch off the stock bumpstops.

 

I'll have to look when I get home on mine. I too installed the same springs over the weekend. Mine dropped from 32 3/8 from the ground to the lip of the fender to 30 5/8 afterwards.

Bob

 

ttt, spike? is this normal?

 

Speedin Bob, how did you install the springs, with the tighter coils at the top or bottom? I did mine with the tighter coils at the top. I wonder if this would make a difference. I'll post tomorrow if I have the same problem with the bump stops.

Bob

 

Don's Bolt, that sure doesnt leave much room for suspension travel does it? If i cut 1" off that will only leave about 1/2" of bumpstop, is that enough?

Is everyone with front springs having the same problem or issue?

 

Edward,

I'm calling Eibach's tech line this morning and will keep you in mind

QKSILVR,

The Eibachs are a progressive rate springs and have tighter coils on one end.

Chainsaw,

I installed the tighter coils at the top as well. Wouldn't think this have an affect on the ride height.

Bob

 

Keep us informed Speedin Bob.

I wonder if the Roush Bumps stops can be purchased seperately?

 

Yes, the Roush bumpstops can be purchased seperately. They are $40...

Daniel.

 

Wow, those are close. I too have the Eibachs. I installed with the tight coils on top but didn't get that much drop. Did you install the springs upside down? I believe the writing on the coils should be readable. Good srpings though. I will check when I go home for lunch.

 

Edward,

Shoot me an email so we can discuss the Roush bumpstops.

nlocgen2vp@hotmail.com

Bob

 

Well, I just got home and took a look, mine are like yours. The spring is compressed at the top and the bump stop is about a 1/4" from hitting the control arm. Time to do some shaving.
Doesn't look like there is much room for the spring do its job. This should become interesting.