[Zoe]

Hi friends,

seems I need a new brake piston for the rear disc brakes. 1983 model. I found one apparently for the MA6 with a diameter of 38mm.

Can anyone confirm that this would be correct?

The car is in a shop so I can't get to it quickly to measure myself.

Thanks for all pointers!

Zoe

 

[ToyodaSup]

Zoe,

Here are a couple of screen shots from Rock Auto for the 1983 Toyota Celica 2.8L (Supra). They often show the specs on parts however the piston diameter is not shown. The seal kit says 43 which I assume is MM but again it's not clear if that is the ID or OD of the seal. Sorry! It is interesting that the interchange for the piston is varied so that might help your parts guy. Good luck.

 

[Zoe]

Thanks! I found one of those service kits (w/o piston), maybe this is sufficient. I'll ask the guy for the diameter of the piston when he's going to dismantle it. New seals are most important and maybe the piston isn't bad after all.
Cheers,
Zoe

 

[tomitoyo]

in case it is useful to you

Kits de reparación de pinzas traseras y pistones para Toyota Celica Supra 2.8 A6 (1981-1985) | eBay

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[Zoe]

Muchas gracias!
I put it on my watch list, let's see what the shop says about the pistons.

 

[punkara]

It is not 38mm, it is 42.8mm, the "38mm" is an error in the system. Both pistons and repair kids exist in Europe, they are produced in Denmark, I belive. I rebuilt my rear caliper 2 weeks ago.

 

[Zoe]

Mille grazie!

Let's hope my little one survives the hibernation stand-still without additional brake problems, but good to know (and to buy, just in case).

Zoe

 

[punkara]

You are welcome. I think the name of the producer was Autofren, also some catalogs list the piston as "43mm". But any shop, that specializes in caliper rebuilds will either have the parts in stock, or can order them for you. I paid 40€ and they did everything in 2.5h.