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- - What pistons in a 93 RA (https://www.scoobynet.com/general-technical-10/634423-what-pistons-in-a-93-ra.html)

T5OLF

14 September 2007 12:45 PM

What pistons in a 93 RA

Are they cast or forged????

exvaux

14 September 2007 01:49 PM

supposed to be forged,wrx were cast but dunno if that was an urban legend

T5OLF

14 September 2007 02:11 PM

Yeah I heard they were supposed to be forged but someone told me they aren't. I'm looking to turn the boost up/remap from 1.23 to 1.4ish but don't want to risk a melt down.

banny sti

14 September 2007 02:13 PM

A WRX RA will have cast pistons only the STi's came with the forged pistons.

Banny

T5OLF

14 September 2007 02:26 PM

Cheers banny :) any idea what cast pistons will stand boost wise??

banny sti

14 September 2007 02:33 PM

Best off checking with your mapper but i would not want to go beyond 1.4bar

Banny

T5OLF

14 September 2007 02:47 PM

Cheers mate :)

rossyboy

14 September 2007 03:40 PM

Andy F didn't seem to have a problem running my oe '93 WRX pistons at 1.5 bar peak, dropping to 1.4 bar.... The car hasn't complained about it yet either after 4k miles.

That includes 4 rolling road runs where it managed to top 1.55 bar at one point.

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