• Welcome to H4O! For a reduced ad experience, please login or register with the forum.

H3 Upper Control Arms

GreatDaneHummer

Well-Known Member
Messages
994
Location
Chicago
I started a project today with the design team at work to create a new upper control arm for the H3 Hummer. One of my main targets is to provide more room for a coil over shock by KING. I wanted to see how many others on here might be interested in upgrading their upper control arms? High end ball joints etc will be used.
 

rsc

Well-Known Member
Messages
1,087
Location
Tulsa
They would be nice if offered in something smaller than the 10.1" ring gear, I don't think a Dana60 or 80 sized diff will fit up under there without a ton of major mods. At the moment a desire for a front locker, the ability to re-gear to 4.88-5.13 and a stronger setup means going solid axle. And I would like to see the option before grenading the front some day. The updated control arms are something I would like to see, but if I lose another bearing at least I can get an OEM piece that would last a good while.
 

amrg

Well-Known Member
Messages
2,317
Location
Qatar
Upgraded control arms (that offer more travel if possible) is a plus. The differential thigng is what most ppl would would like to upgrade (need for lower gearing to run bigger tires).
Eitherway, whatever is offered ppl will want (not like we have a pleyhora of aftermarket parts to select from)

Personally, mid travel IFS is what interests me. Somewhere that is 10-12" travel, lifts the truck by 2-3" and incorporates coil overs.
 

GreatDaneHummer

Well-Known Member
Messages
994
Location
Chicago
Part of this new upper control arm push I have is the want of KING coil over shocks. The typical Bilstein etc. do not provide ride adjustment. I want to create a combination that is rock solid using bulletproofsteering also.
 

atvspeed4

Well-Known Member
Messages
1,216
Location
massachusetts
We already made v1 custom upper control arms. You will find that you cannot widen or change the shape of the upper control arm like you are hoping when running stock wheels. At full droop and to lock the tire will rub hard on control arm. We had done several cad models of different shapes that will still keep correct geometry and were only able to add ~1/4" clearance . We made a set for my personal h3 after I destroyed so many upper control arms but still will not be able to clear a coilover. Also, you will need to make new upper shock mounts that still tie into upper control arm mounts because the total height of a 4" travel coilover with proper machined top and bottom will still not fit
 

derian06

Red Rockett
Messages
1,866
Location
Madison, AL
We already made v1 custom upper control arms. You will find that you cannot widen or change the shape of the upper control arm like you are hoping when running stock wheels. At full droop and to lock the tire will rub hard on control arm. We had done several cad models of different shapes that will still keep correct geometry and were only able to add ~1/4" clearance . We made a set for my personal h3 after I destroyed so many upper control arms but still will not be able to clear a coilover. Also, you will need to make new upper shock mounts that still tie into upper control arm mounts because the total height of a 4" travel coilover with proper machined top and bottom will still not fit

What could you do with a rancho lifted rig???
 

GreatDaneHummer

Well-Known Member
Messages
994
Location
Chicago
We already made v1 custom upper control arms. You will find that you cannot widen or change the shape of the upper control arm like you are hoping when running stock wheels. At full droop and to lock the tire will rub hard on control arm. We had done several cad models of different shapes that will still keep correct geometry and were only able to add ~1/4" clearance . We made a set for my personal h3 after I destroyed so many upper control arms but still will not be able to clear a coilover. Also, you will need to make new upper shock mounts that still tie into upper control arm mounts because the total height of a 4" travel coilover with proper machined top and bottom will still not fit

We where working on a tear drop design that so far can clear a king coil but not change the OEM geometry. From Solid works it shows it can be done?
 

atvspeed4

Well-Known Member
Messages
1,216
Location
massachusetts
We where working on a tear drop design that so far can clear a king coil but not change the OEM geometry. From Solid works it shows it can be done?

Tire will hit at full droop and turned to lock like I said we added 1/4" space and tire rubbed with wide 315 tires. With less than stock backspace you would be fine
 
Top