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@mcmyk
Yeah so, the block is toast, also maybe one cylinder head and the turbo. We found debris including shattered sections piston rings inside the sump.
However, the Impreza we acquired to put a H6 in came with a brand new EJ207 short block - you can buy them new from Subaru and Tom has this “in stock”. So the plan will be to rebuild that brand new block with the forged rods and a new set of forged pistons.
The next step is stopping it happening again, so the wastegate housing has been reworked to stop the boost creep, and the fuel lines to the rails will be re-worked to be in parallel not in series to reduce the chance of cyl 4 getting the least fuel pressure, some more mapping and some extra ECU protection put in