Does any one know what pistons these are please? They don't look like wrx pistons from the classics? could be newer? or sti?





Thanks.

 

look like standard V3-4 97/98 pistons, uk

 

Okie ty

Only reason i asked was, saw some sti v3/4 pistons for sale on ebay earyler, and they looked just like this.

And 1996 wrx 1ns had a curve in them.

 

As Andy put - Version 3~4 or UK '97/98.
Unlikely to be forged pistons in the pics as its an Open Deck Block with Composite head gaskets.

The STi Forged pistons for the Version 3~4 have a smooth underside of the crown and marked HF/1/2/3/4.
The standard cast pistons will have cross hatching under the crown.
Version 1 ~ 2 came with cast "dogbones" for the wrx and forged HF dogbones for the STi.


Version 3~4 cast (left) and STi Forged on the right.




Version 1~2 Dogbone's crawling off my bench




Mick