Hi Guys, were these standard on 280z? any thoughts about the 2 piston calipers.

I have replacement calipers in the front from Oriellys but my originals which I plan to rebuild are 2 piston per caliper etc.

Stock is a single piston design. You can see that caliper in the FSM or parts manual.

It sounds like your car may have had the Toyota calipers installed. http://www.zhome.com/ZCMnL/tech/Calipers/toyotaCalipers.html

I'm not sure why they are called 4 piston in the Zhome article.

22 minutes ago, SteveJ said:

Stock is a single piston design. You can see that caliper in the FSM or parts manual.

It sounds like your car may have had the Toyota calipers installed. http://www.zhome.com/ZCMnL/tech/Calipers/toyotaCalipers.html

I'm not sure why they are called 4 piston in the Zhome article.

Just looked at mine and each caliper has 4 pistons. Thats why probably. Let me try to find any part number on them and will post.

25 minutes ago, SteveJ said:

Stock is a single piston design. You can see that caliper in the FSM or parts manual.

It sounds like your car may have had the Toyota calipers installed. http://www.zhome.com/ZCMnL/tech/Calipers/toyotaCalipers.html

I'm not sure why they are called 4 piston in the Zhome article.

Pretty sure this would be termed as a two-piston design, common to S30's. A single piston is common to most recent cars with a floating caliper design.

Pics? Definitely not factory but could probably help with what you have on the car now. Two sets of Toyota truck calipers will bolt directly on.

Here they are…sorry for the delay.

Definitely 'yota calipers. https://www.rockauto.com/en/moreinfo.php?pk=9744180&cc=1272260&pt=1704&jsn=1203

On 11/1/2022 at 12:00 PM, MH77280Z said:

 originals which I plan to rebuild 

 

25 minutes ago, MH77280Z said:

 

 

Good luck with that.  Might want to see the cylinders, if you can get them apart, before you buy the rebuild parts.  Pretty crusty.

12 minutes ago, SteveJ said:

Definitely 'yota calipers. https://www.rockauto.com/en/moreinfo.php?pk=9744180&cc=1272260&pt=1704&jsn=1203

So basically dont bother rebuilding, which would need blasting, parts and labor when these are not original and $50 a piece on Rockauto. I thought I had found unicorns

1 hour ago, MH77280Z said:

So basically dont bother rebuilding, which would need blasting, parts and labor when these are not original and $50 a piece on Rockauto. I thought I had found unicorns

No. The link Steve posted is for the S12W calipers with the 4x 43mm bores and vented rotors. Your calipers in your post #6 are the S12-8 calipers with 43/34mm bores for the non-vented solid rotor.

The S12-8 calipers are getting hard to find.

S12-8 - 1984-85 Toyota 4 Runner and 1979-84 Toyota pickup

S12W - 1985-95 Toyota 4 Runner

Edited December 14, 20223 yr by EuroDat
Typo

Think about converting back to stock.  I don't know if the conversions involve permanent changes.  I thought that they were just bolt-on pieces.

I am currently running after market calipers from Oriellys. They are 2 piston and stock bolt pattern. planning to continue using those. Will get these rebuild in that case. I think rebuild i am quoted $50 a piece which includes blasting, painting, new kit and assembly.

Edited December 14, 20223 yr by MH77280Z