4age pistons (ex groupA/rally engines)

[ae70_4age]

Hey guys,
i have some 4age 16v engines and parts from old rally cars.

I have a few pistons here, just wondering if some one can identify them?





Theyre mahle pistons,81.15mm diameter. look to be forged. 18mm pin (to suit a floating pin/rod)


Theyre mahle pistons also, 81.06mm diameter. forged aswell i think, 18mm pin same as above,
Came in a TRD piston set box, labeled group A rally pistons.

The block i got with this was a brand new ae86 3 rib block, got the box from japan it came in!
Has a good condition Toyota Group A 40mm crank, is not a TRD item.



Next motor, has a TOYOTA R DOT BLOCK. 7rib, no oil squirters. Bigport head with a mint port job, 288/9mm cams, ran on carbs etc.
Crank and rods are early bluetop, but the rods have been machined to take a 20mm press fit pin,
The pistons are toyota pistons, oversized 0.5mm. Theyre flat top and look like they mightve had a teflon coating?

Apparently running around 13:1 compression.

Has anyone got any info on these? Also any info about the group a motors would be good.

Thanks
Daniel

I think i got the layout ok.