DIY Rear Camber Bolt/Knuckle Bushing
02-22-11, 09:19 PM
#16
A nylon or rubber bushing is never a replacement for a pressed spherical bearing. Furthermore a sleeve is a bad interface for something that moves everytime your suspension cycles. Even the stock rubber bushings are staked to hold the sleeve and to preload the rubber bushing, which is also loading in torsion as the suspension travels.
These sphericals play such a key roll in locating the rear end, I would highly advise finding a replacement that is of the same interface. Is this something else I need to address for you guys or is there another alternative?
These sphericals play such a key roll in locating the rear end, I would highly advise finding a replacement that is of the same interface. Is this something else I need to address for you guys or is there another alternative?
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RB BBK's and 2P Rotors, G-Loc pads, Radium Fuel Systems
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02-23-11, 06:47 AM
#17
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I need to do something but don't want to run into the same problems as diamondmit did. Should I just buy some used knucles? How can I know they aren't wore out?
02-23-11, 07:28 AM
#18
The only way to know of its worn is to remove the boot and look for wear on the ball surface.
Another lower tech way would be to mount an arm on it and test for play.
Another lower tech way would be to mount an arm on it and test for play.
__________________
Redefining Lexus Aftermarket Parts Since 2001
-- We are your Lexus suspension experts--
BCR - KW - PENSKE - OHLINS - HKS - GREDDY - STANCEPARTS
Links - Arms - SuperPro Poly Bushings - Solid Bearing Conversions - Motor Mounts
RB BBK's and 2P Rotors, G-Loc pads, Radium Fuel Systems
Custom Fabrication Design and Machining - Industrial 3D Printing - Laser Cutting
2018 USTCC Sportsman Class Champions - 2018 NASA ST5 National Champions
Redefining Lexus Aftermarket Parts Since 2001
-- We are your Lexus suspension experts--
BCR - KW - PENSKE - OHLINS - HKS - GREDDY - STANCEPARTS
Links - Arms - SuperPro Poly Bushings - Solid Bearing Conversions - Motor Mounts
RB BBK's and 2P Rotors, G-Loc pads, Radium Fuel Systems
Custom Fabrication Design and Machining - Industrial 3D Printing - Laser Cutting
2018 USTCC Sportsman Class Champions - 2018 NASA ST5 National Champions
02-25-11, 09:55 AM
#21
The rear suspension is over constrained as it is, so the bushings help fudge things during the cycle, but that is why they wear out in the first place.
Its not practical for an automaker to have sphericals at every location when they can get by at stock ride height without one. When lowered though, all that preload in the rubber bushings shows up with binding. I only say this to demonstrate that there is a reason for a press fit, tight tolerance bearing on the knuckle side because it experiences all the locating forces from the linkages that connect to it. So it SHOULD be ridgid in this sense, thinking of it as the center of a tripod with rubber feet on the bottom. If you replace one of the tripod connections with a slopped energy absorbing connection, it will now shake more because it has a new mode, a new component, to store and release energy.
Squish is a bad thing on its own, but worse when its introduced into a place it was not designed for. You are going to have a new resonance by adding this bushing and it will interact with the infinite number of alignment variances. Its adding a spring where there was none and a frictional surface in the sleave.
Its up to you to decide, but personally this is not something I would do.
__________________
Redefining Lexus Aftermarket Parts Since 2001
-- We are your Lexus suspension experts--
BCR - KW - PENSKE - OHLINS - HKS - GREDDY - STANCEPARTS
Links - Arms - SuperPro Poly Bushings - Solid Bearing Conversions - Motor Mounts
RB BBK's and 2P Rotors, G-Loc pads, Radium Fuel Systems
Custom Fabrication Design and Machining - Industrial 3D Printing - Laser Cutting
2018 USTCC Sportsman Class Champions - 2018 NASA ST5 National Champions
Redefining Lexus Aftermarket Parts Since 2001
-- We are your Lexus suspension experts--
BCR - KW - PENSKE - OHLINS - HKS - GREDDY - STANCEPARTS
Links - Arms - SuperPro Poly Bushings - Solid Bearing Conversions - Motor Mounts
RB BBK's and 2P Rotors, G-Loc pads, Radium Fuel Systems
Custom Fabrication Design and Machining - Industrial 3D Printing - Laser Cutting
2018 USTCC Sportsman Class Champions - 2018 NASA ST5 National Champions
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RamAirRckt (04-06-17)
02-27-11, 11:33 AM
#23
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Found this:
http://www.nengun.com/ikeya-formula/...le-pillow-bush
http://www.rhdjapan.com/ikeya-formul...s-toyota-61279
What do you guys think? No rubber seals scare me a bit.
http://www.nengun.com/ikeya-formula/...le-pillow-bush
http://www.rhdjapan.com/ikeya-formul...s-toyota-61279
What do you guys think? No rubber seals scare me a bit.
Last edited by CDriver; 02-27-11 at 12:00 PM.
09-02-11, 02:26 PM
#27
...stock bolt, so the Lexus tech may have to bore the sleeve a little - not something I wanted the dealer to have to do. This is best done on a lathe or at a minimum, on a good drill press and I don't know what they'll be using. I sure hope they don't use a hand-held drill.
Also, the bushings slide into the hole too easily - one can move them in/out by hand, whereas the original bushings appeared to be press fit into the hole (although this could be because of age/time - there wasn't any sort of flange to hold the bushing in place.)
Lastly, once installed, since the bushing slides with ease, there is nothing to stop the suspension piece from moving in/out with the bushing. We're not sure that this is a legitimate concern and will figure this out when the alignment is performed and a road test completed.
I'm really getting terrific service from Dan at Northborough Lexus - I'm really impressed with his willingness to pursue this with me. I'll have some sort of final post tomorrow when this work is expected to be completed.
Fingers crossed :-)
dd
Also, the bushings slide into the hole too easily - one can move them in/out by hand, whereas the original bushings appeared to be press fit into the hole (although this could be because of age/time - there wasn't any sort of flange to hold the bushing in place.)
Lastly, once installed, since the bushing slides with ease, there is nothing to stop the suspension piece from moving in/out with the bushing. We're not sure that this is a legitimate concern and will figure this out when the alignment is performed and a road test completed.
I'm really getting terrific service from Dan at Northborough Lexus - I'm really impressed with his willingness to pursue this with me. I'll have some sort of final post tomorrow when this work is expected to be completed.
Fingers crossed :-)
dd
so you never updated this although you been on, how did this turn out for you?
09-03-11, 12:08 PM
#30
.