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« Last post by jammin on December 29, 2018, 04:13:11 PM »
I did a complete rebuild of the 4JH3-HTE in my Stevens 47. New bearings, pistons, cylinder head, etc. The reason for the rebuild was that the engine had ingested water and sucked a valve. Like the OP, I didn't want to go with a new, electronic motor. The cylinder bores had rusty patches from the water ingestion, and I wanted to bore the cylinders out 0.010, but oversize pistons were not available, despite being listed in the parts r&r catalog. I honed the cylinders out as much as allowable, but that wasn't enough to completely remove the rust stains.
So far the engine runs fine, but I still worry about those rust patches. The engine does burn more oil than I would like, but I think that was due to a damaged housing/oil seal in the turbo. I've replaced the turbo, but haven't had a chance to run the engine enough to see if that fixed the oil consumption problem.
Good luck on your rebuild. Let me know if I can help in any way.