Front LCA, rearward bushing) options? Polyurethane? PSRS?
Jul 31, 2010, 08:57 AM
#1
Front LCA, rearward bushing) options? Polyurethane? PSRS?
I'm looking to see what options are out there for replacing the rearward bushing on the front lower control arms.
I know Perrin makes the PSRS and that does exactly what I want, except that it has an aluminum bushing.... and not something like a solid delrin or some other kind of polyurethane bushing. Of course the center needs to be a giant spherical bearing (pillow ball), but I'm interested in different ways to fill that void besides using aluminum.
I searched for the better part of this week with no success.
Ideally I'm looking for a bushing that is exactly the same as stock...except a more rigid poly bushing...with a build in offset to add caster.
lmk what's out there. Thank you
I know Perrin makes the PSRS and that does exactly what I want, except that it has an aluminum bushing.... and not something like a solid delrin or some other kind of polyurethane bushing. Of course the center needs to be a giant spherical bearing (pillow ball), but I'm interested in different ways to fill that void besides using aluminum.
I searched for the better part of this week with no success.
Ideally I'm looking for a bushing that is exactly the same as stock...except a more rigid poly bushing...with a build in offset to add caster.
lmk what's out there. Thank you
Aug 1, 2010, 05:52 PM
#5
Moves the wheel rearward. Rubbing the skirt more than it already does.
My camber/caster plates are almost done... So I'll be adding caster with the plates.
the LCA bushing movement will move the wheel forward 1/2" or so...and the c/c plate will move it back an 1/8" or so. Rough guestimates.
The factory lca bushing is very compliant and making it less compliant will fix my car wandering around on every rut in the road...and make the steering feel like its actually attached to the wheel!
My camber/caster plates are almost done... So I'll be adding caster with the plates.
the LCA bushing movement will move the wheel forward 1/2" or so...and the c/c plate will move it back an 1/8" or so. Rough guestimates.
The factory lca bushing is very compliant and making it less compliant will fix my car wandering around on every rut in the road...and make the steering feel like its actually attached to the wheel!
Aug 1, 2010, 08:28 PM
#6
Keep us updated.
Only thing I can come up with is some kind of aluminum clam shell with a poly chunk inside to hold the spherical bearing that could be pressed in.
I'm fitting 275/30/18s and have done similar fender mods as you have. It seems like I have enough room to get some more caster, but maybe not. I'm building caster plates right now as well.
Only thing I can come up with is some kind of aluminum clam shell with a poly chunk inside to hold the spherical bearing that could be pressed in.
I'm fitting 275/30/18s and have done similar fender mods as you have. It seems like I have enough room to get some more caster, but maybe not. I'm building caster plates right now as well.
Aug 1, 2010, 08:38 PM
#7
Test it at full lock in reverse. 
I thought about capturing the bushing with two shells as you mentioned, but the loads won't be in that axis.
I think I can simply E120HP my bushing to the spherical and to a steel tube.... waiting for my Chemical Engineering friend to get back to the university so I can bug him about it!
I thought about capturing the bushing with two shells as you mentioned, but the loads won't be in that axis.
I think I can simply E120HP my bushing to the spherical and to a steel tube.... waiting for my Chemical Engineering friend to get back to the university so I can bug him about it!
Trending Topics
Aug 1, 2010, 11:42 PM
#8
Already have and it clears. Full lock, reverse, pulling out of a driveway under heavy 3 wheel motion.
I think the clam shell with a press fit would stay together. Only issue I see is that it isn't a very large bushing so your poly section would be pretty small once you fit in the bearing and clam shell, resulting in very little compliance anyway.
I think the clam shell with a press fit would stay together. Only issue I see is that it isn't a very large bushing so your poly section would be pretty small once you fit in the bearing and clam shell, resulting in very little compliance anyway.
Aug 2, 2010, 08:24 AM
#9
Thinking back on this, my E46 had a similar LCA setup. I replaced the bushings in that car and it was just a solid chunk of poly, no bearing at all. Worked fine for 75k miles.
Is a bearing really that big of an advantage over an offset poly bushing?
Is a bearing really that big of an advantage over an offset poly bushing?
Aug 18, 2010, 03:09 AM
#10
Evolved Member
iTrader: (14)
Join Date: Sep 2007
Location: The Stream Of Carol , IL
Posts: 1,095
Likes: 0
Received 1 Like
on
1 Post
suspension techniques makes a front LCA kit for the EVO. I bought a new one off a member here. The kit replaced all four bushings on the front LCA. I Had them and installed and it works beautifully. Steering response was improved according to the butt-dyno. I did this bc I ran a curb and damaged those bushings.
)
Aug 19, 2010, 12:17 PM
#14
Evolved Member
iTrader: (17)
Join Date: Apr 2004
Location: 41° 59' N, 87° 54' W
Posts: 6,224
Likes: 0
Received 0 Likes
on
0 Posts
The ES bushing does not have a spherical bearing in it (at least not the one I got) and I did not feel comfortable using it. I went with a Perrin PSRS instead. No complaints so far. Steering feels a little bit different (hard to explain), but performance is unaffected, if not improved (hard to quantify).
l8r)
l8r)
