ART pistons

are these stock pistons?...everything i have seen says
they might be....i was just wondering as there is no dicernable ridge at top of cylinder walls ...just wondering if this motor has been freshened before..

probably origional pistons or kaw pistons used for a 1st overbore to clean up.ive seen lots of motors with no ridge,depends on how often oil was changed and type of oil used.ived seen a smalblock chevy that was run with synthetic oil from day one that had close to 300,000 on it that still showed crosshatch in cylinder walls what does the bore measure out at?

i did a quickie with a pos tape measure and it looks like 70 mm...stock i suppose...

The 1100 pistons I have on a shelf are stock and say ART. Can post a pic if interested, but it would be Monday before I would be able to.
Kirk P

kpier998 wrote:

The 1100 pistons I have on a shelf are stock and say ART. Can post a pic if interested, but it would be Monday before I would be able to.
Kirk P

thats o k...i was just wonderin if stock ones had art imprinted on them...i guess they do....thanks again....

most stock type cast japanese pistons are marked with those letters it is the manufacters mark,that company manufacters for all the o.e companies. i used to know the name of theoutfit but i'm getting older and there is only so much room in my head for usless trivia. maybe some one else can help.

timebomb33 wrote:

most stock type cast japanese pistons are marked with those letters it is the manufacters mark,that company manufacters for all the o.e companies. i used to know the name of theoutfit but i'm getting older and there is only so much room in my head for usless trivia. maybe some one else can help.

theyre also oem in suzuki snowmobiles engines on arctic cats

www.art-piston.com.tw/

Art not only made OEM stock pistons, but aftermarket higher compression cast pistons. Back in the 70's they were one of the available performance options for the Z1's - compression around 10.5:1.