Piston Question

[cfont60]

Finally I had to dismantle the engine of my 1981 Racing since it broke a week ago. Oil pressure light came up in the middle of a hiway and by the time I got to the side the engine died. When I dismanteled the engine I found that the Pistons are not the original ones so I measured them and I would like to know if someone can inform the distance from the center of the hole for the piston pin to the top of the piston. What I measured is 39mm.
I attach a photo of the pistons in my engine.
Thanks in advance

[djape1977]

that looks like standard fiat 84mm piston to me

[Tas131]

I have a set of pistons out of an 1800cc 124 coupe on my desk, they're 38.7mm from gudgeon centreline to the top of the piston. I've got some 131 pistons in the shed I can check on the weekend if you want!

[cfont60]

Mick, thanks a lot for your help. Finally I found the correct number and it is 39.25 from a piston manual.
Regards

[theredx19]

Most Fiat pistons are mondial pistons which should be stamped on the inside of the piston but looking at the heat in that piston I would check first if the block will take a sufficient rebore....

[cfont60]

The Engine broke. Currently all the engine is being re-done. New pistons, valves cams, block re-bored, etc. A new engine. I wlii take some pictures when we assemble it.