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s12+8 calliper installation problems


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So with just my luck, I ran into issues with the cheaper bolt on option. Of course right?

 

Brand new 280z rotors

SS Lines

12+8 Callipers

B4DE0716-DE2C-4366-9632-4000A8D98D50_zps

00732498-9214-4CF6-AA5C-BC5A8A7A9DFC_zps

 

Take a look at this spacing issue where i should easily bolt on my calliper to my knuckles. Looks like i'd have to grind down my knuckle in order to make these calliper fit which I won't do because this was supposed to be the bolt on option. I'm sure I have some sort of wrong part but I don't know which.

1577769E-414D-4FEB-8C97-735B1C410CD8_zps

 

D64252A4-4706-45CA-A45C-3D1251BB7D0A_zps

 

8E09D75F-B889-418B-BA21-3A5934BC41D1_zps

 

 

I've searched up any s12+8 spacing issues but HybridZ keeps coming up with literally 0 results but I can see a s12+8 topic right on the first page lol. Where did I go wrong? :( Please and Thank you!

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Whatre those calipers from? Id have to dig to be positive, but if memory serves me right (and it has been known to be wrong), theres actually a couple different s12+8 calipers floating around.  In particular there was a mid-late 80s s12+8 caliper from a 4x4 that didnt work, and you needed the s12+8 from the late 70s/early 80s. 

Or maybe not.  haha. Though from the looks of it...

Edited by Sideways
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Assuming that you have 79 - 85 Toyota 4x4 pickup calipers and the correct rotors and hubs  there should be no problem with fitment.  Check the links below for more information:

 

 

 

http://atlanticz.ca/zclub/techtips/toyotabrakeupgrade/index.html

 

http://www.zhome.com/ZCMnL/tech/Calipers/toyotaCalipers.html

 

http://forums.hybridz.org/topic/88822-70-240z-vs-240z-280z-brake-calipers-and-hubs-4-piston-toyota-caliper-issue/

 

 

Note that the Toyota caliper was not designed to accept banjo brake line fittings and may leak. Use a -3AN line and a 10mm x 1.0 to -3AN  line adaptor as shown in the attached picture.

post-178-0-78968100-1416684980_thumb.jpg

Edited by Miles
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This is in regards to a vented rotor conversion, but it still applies:

 

http://forums.hybridz.org/topic/119779-issue-replacing-s12w-caliper/

 

Pretty recent too, perhaps this is going to become a common issue when parts store calipers are used? Sure junkyard calipers can be crusty, but OEM quality can be much more reliable. Rebuild kits are cheap...

Edited by LanceVance
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  • 2 weeks later...

Do not grind anything.  Figure out why it is not fitting: step by step.

 

If you have the correct rotor and calipers they just bolt on. Hundreds of these have been done.

 

Are your hubs installed correctly? Is  the  inner bearing grease seal seated?  Is the hub seated on the axle?

 

Keep searching. This issue has come up before.

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8E09D75F-B889-418B-BA21-3A5934BC41D1_zps



I do wanna share that in the last picture you posted showing top down your hub and rotor, you can see the 240z scallop rotor in the picture.

The Toyota caliper bolt on upgrade is a great upgrade, I've done it on 3 different z cars.

Edited by casper9182
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