Factory Pistons?

[johnstra]

I pulled the head off my 1kzte (KZN130) and found a couple of problems. There's some corrosion and scoring in cylinder #2.

One thing I'm puzzling over is the pistons. My block and pistons are stamped with the number 2 (service manual discusses how block and pistons are marked 1, 2, or 3). In addition to these marks, each of my pistons has a letter stamped on it. 1-3 are stamped with 'B', but piston #4 is stamped with a 'C'.

Does anyone know what the letter code's represent?

Thanks,
-john

[johnstra]

Anybody?

[Vagrant No2]

Sorry but unable to help you . No one has replied as they possibley dont know and dont want to give incorrect advise . Hopefully someone will find or know the the info you require soon . It can take some time for the right person who knows the answer to see your posting .

[surfenstein]

it could possibly be a date code.but dont quote me on that.

[johnstra]

Could be, yeah. It's obvious that my engine has been torn down at some point in the past. The pistons have some additional punch marks somebody put on them to identify which cylinder they came from and the piston in hole #4 is the odd child with the 'C' stamp on it. That one also has a hand-written #4 on it in indelible ink (amazing that it's still there).

Anyway - if anyone else has any ideas let me know.

-john