What pistons are these?
22 July 2009, 01:25 PM
#1
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What pistons are these?
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.
Thanks.
Last edited by Beardy; 22 July 2009 at 01:29 PM.
22 July 2009, 07:15 PM
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22 July 2009, 09:33 PM
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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
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
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