MA70 OEM Suspension - Bushes, or Spherical Bearings?
- Thread starter ed_jza80
- Start date
Sweet. Can't wait to cut out all my camber bolts and put new ones in their place...
Not. :banghead:
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jnybbad;1902723 said:
don't replace as it changes the loading on your suspension arms quite significantly.
The ES kit does NOT have a replacement to the spherical bushing, I can gaurantee you that.
This is a new rear oem bushing:
And this is a new oem rear spherical bushing. Wanna make sure you're talking about the right part.
This is a new rear oem bushing:
And this is a new oem rear spherical bushing. Wanna make sure you're talking about the right part.
must be a newer kit they are offering now, just got mine in from DM. Bushing in the picture is for replacement of the bearing. (which you shouldn't use anyways)
Is it just me or does the spherical bushing kind of look like a heim joint that's all sealed up?
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adampecush;1902926 said:
Can you explain how? Looking at the arm its attached to it seems the movement is just up and down. I would they would use a bearing on this connection for rigidity.
The replacement poly one piece bushing is actually tapered in the center slightly causing a tighter fit in the center of the sleeve . I did some research on other models with IRS and seems common to replace spherical with poly with no issue.
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A few years back a member on here or SF installed a full set of bushings, eliminating the spherical joints. Shortly after, he had a fatigue failure of one of the suspension arms.
With our IRS, each of the lower arms moves through its own arc as the suspension cycles. Only one of these arms is mounted via a bushing to the hub carrier, and this arm generally dicates the up and down movement of the hub. The other two arms are for stabilization and experience movement beyond their rotational plane; as a result, these arms use a spherical bushing and a ball joint. Restricting the motion of one of these joints (spherical or ball) results in significant bending forces generated on the arms as the suspension cycles.
With our IRS, each of the lower arms moves through its own arc as the suspension cycles. Only one of these arms is mounted via a bushing to the hub carrier, and this arm generally dicates the up and down movement of the hub. The other two arms are for stabilization and experience movement beyond their rotational plane; as a result, these arms use a spherical bushing and a ball joint. Restricting the motion of one of these joints (spherical or ball) results in significant bending forces generated on the arms as the suspension cycles.
That does make sense. Ill have to look at it again tonight. I just done see the rotational forces occurring on this connection your talking about. I have built a lot of suspension systems, sand rail long travel, using heim and poly so I am familiar with forces during suspension travel.
At first glance, no measurements taken, the rear arms seem to travel in a vertical path with no caster. If this is true I can't see and rotational forces in action, only parallel forces in line with the bushing as it goes up and down.
I will take some measurements and go from there. Thanks again.
At first glance, no measurements taken, the rear arms seem to travel in a vertical path with no caster. If this is true I can't see and rotational forces in action, only parallel forces in line with the bushing as it goes up and down.
I will take some measurements and go from there. Thanks again.
Does anyone know how much the spherical bushing costs at Toyota? I got two energy bushing kits for both supras
Roughly 40 bucks each. Get them from drift motion. Aaron is a good guy. Fast shipping. Same price as Toyo.
I have two new front shock bump stops I bought and won't need. If you need then shoot me a pm. Just want to recoup my costs from Toyo on them
I have two new front shock bump stops I bought and won't need. If you need then shoot me a pm. Just want to recoup my costs from Toyo on them
K let me find out via my Toyota cause I spent $50 4xs so I got 25% off my next purchase ill check it out monday
Updated rear poly kit from Energy Suspension DEFINITELY has the extra one-piece bush included (for the rearmost lower arm that adjusts camber). However it clearly states not to fit this bush unless the spherical bush is worn - i.e: you shouldn't need it. I can take pictures of the bush if you need it for reference, as I won't be fitting it to my car.
Earlier kits didn't have this bush, since it's assumed the OEM spherical bush doesn't really wear out (though could be damaged in an accident I guess)
Did anybody find it odd with the ES kit that the steel crush tubes are about 2mm (80 thou") longer than the OEM ones for both the upper & lower arms? Must take a bit of force to fit them into the subframe as a result. I'm about to find out I guess
Earlier kits didn't have this bush, since it's assumed the OEM spherical bush doesn't really wear out (though could be damaged in an accident I guess)
Did anybody find it odd with the ES kit that the steel crush tubes are about 2mm (80 thou") longer than the OEM ones for both the upper & lower arms? Must take a bit of force to fit them into the subframe as a result. I'm about to find out I guess
I have a 160k mi. MK3, just was under the car checking the rear because I have a serious grinding/vibration over 90mph, both rear wheels have movement inward and outward at the bottoms (camber) that I attributed to the spherical bearings at the time. They will "clunk" inward and outward at least a couple of degrees, I had my thumb on the knuckle/bearing and felt the movement between them there. I will check to make sure it is the spherical bearings when I rip the rear end apart.
Will be interesting to see when you pull it apart JP, take some pics of the spherical bushing if you decide to replace them. Would be good to see with the rubber shield cut off.
I wonder what causes the wear in them? Mine have 135k miles on them and are still nice and tight. The spare ones I have from a wreck are all good too.
I wonder what causes the wear in them? Mine have 135k miles on them and are still nice and tight. The spare ones I have from a wreck are all good too.
I to replace the spherical bushings in mine they were shot I tried using the supplied poly bushings but couldn't get the fuckers in so bought some new spherical ones
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