help IDing pistons in c16se

[JaffaTB]

hi everyone, recently stripped down a c16 engine i bought as it sounded really rough and rattley and found out the pistons move all over in the bore, i have cleaned up the tops and theres no sizes on them just some random numbers, i have taken a photo to show them, anybody know what size or what they are? cheers :thumb:

http://i614.photobucket.com/albums/tt230/JaffaTB/DSC_5448_zpsf8a3b2dd.jpg

[JaffaTB]

anybody any clues?

[mowgli]

they are most likely std, as they have no markings

[Jon_nova1]

looks like a good 2-3MM gap?

[JaffaTB]

yep was knocking mad hence why I stripped it, so much for it being "bored out to 1680 with Mahle forged pistons" lol

[MK999]

It might have been worn all the way out to 1680 by the (standard) Mahle forged pistons? :p

[mowgli]

1680 is max oversize i'd think....for std pistons...

why do people think an overbore will increase power? it usually doesn't on a std piston anyway.

with the gap, i'd reckon it has been bored out & has had oversize rings put in.

only measuring will tell though, buy a set of vernier calipers.