SPL Upper Control Arms. The First

Rusty · 10-22-2013, 07:16 AM

Got my arms installed.

Had one bolt that was sticking out of the right side inner fender hitting the control arm at full upward travel. So I grounded it down.

In the last picture. Something that happen. When I removed the bolt that holds the upper ball joint in the spindle. The arm popped up by it's self. About 3". So this tells me that the bushings don't rotate, but twist. So there is no free movement of the arm.

martin82 · 10-22-2013, 01:18 PM

Quote:

Originally Posted by Rusty

Got my arms installed.

Had one bolt that was sticking out of the right side inner fender hitting the control arm at full upward travel. So I grounded it down.

In the last picture. Something that happen. When I removed the bolt that holds the upper ball joint in the spindle. The arm popped up by it's self. About 3". So this tells me that the bushings don't rotate, but twist. So there is no free movement of the arm.

Rusty, are you saying the STOCK arm is the one that binds?

Rusty · 10-22-2013, 03:16 PM

Quote:

Originally Posted by martin82

Rusty, are you saying the STOCK arm is the one that binds?

Yea.

corner3garage · 10-22-2013, 01:25 PM

Quote:

Originally Posted by Rusty

Got my arms installed.

Had one bolt that was sticking out of the right side inner fender hitting the control arm at full upward travel. So I grounded it down.

In the last picture. Something that happen. When I removed the bolt that holds the upper ball joint in the spindle. The arm popped up by it's self. About 3". So this tells me that the bushings don't rotate, but twist. So there is no free movement of the arm.

In the Last picture, it shows that you are working with the stock arm.

This happens because stock Rubber Bushings bind and dont move as freely and have much more stiction than the SPL arms.

This is because the SPL arms have Spherical Bearings and these are able to move freely.

Thanks,
Mike

Rusty · 10-22-2013, 03:19 PM

Quote:

Originally Posted by corner3garage

In the Last picture, it shows that you are working with the stock arm.

This happens because stock Rubber Bushings bind and dont move as freely and have much more stiction than the SPL arms.

This is because the SPL arms have Spherical Bearings and these are able to move freely.

Thanks,
Mike

I know I would have some binding with the stock arms. But when I removed the cross bolt, and it popped up soon as I took the bolt out. Kind of took me by surprise. LOL The SPL moves nicely.

synolimit · 10-25-2013, 09:59 AM

Quote:

Originally Posted by Rusty

I know I would have some binding with the stock arms. But when I removed the cross bolt, and it popped up soon as I took the bolt out. Kind of took me by surprise. LOL The SPL moves nicely.

Always happens. They must tighten from the factory with the suspension loaded. With it up in the air they pop out like that.

Shamu · 10-23-2013, 06:29 PM

Quote:

Originally Posted by corner3garage

In the Last picture, it shows that you are working with the stock arm.

This happens because stock Rubber Bushings bind and dont move as freely and have much more stiction than the SPL arms.

This is because the SPL arms have Spherical Bearings and these are able to move freely.

Thanks,
Mike

Yep biggest improvement we can do with 370 z suspension is to go full spherical I just completed purchase of all spherical bushing replacement of all stock bushings using al SPL parts! Upper and lower arms both front and rear including hub bushings.

mprog · 10-30-2013, 03:55 PM

Shamu, which of the spherical bearings had the biggest impact on suspension performance?

Quote:

Originally Posted by Shamu

Yep biggest improvement we can do with 370 z suspension is to go full spherical I just completed purchase of all spherical bushing replacement of all stock bushings using al SPL parts! Upper and lower arms both front and rear including hub bushings.

gomer_110 · 10-22-2013, 09:48 PM

Quote:

Originally Posted by Rusty

( Click to show/hide )

In the last picture. Something that happen. When I removed the bolt that holds the upper ball joint in the spindle. The arm popped up by it's self. About 3". So this tells me that the bushings don't rotate, but twist. So there is no free movement of the arm.

Same thing happened when I had my Doran arms installed. $hitty stock arms

.

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