What turbo is this??? Calling all turbo GURUS PLEASE HELP!!!
Sup guys, came across this borg warner turbo. Had "s257" in marker wrote on outside of box. Has divided T4 flange and vband on hotside and looks to be ductile iron. Would like to know A/R and trim of it and horsepower rating. Thanks peeps. On with pix:





NEW PIX:
HOT SIDE Measurement

COLD SIDE Measurements






NEW PIX:
HOT SIDE Measurement

COLD SIDE Measurements

Last edited by ercfrmr; May 8, 2012 at 01:54 PM. Reason: added needed pix
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