Snelly Posted November 9, 2023 Report Share Posted November 9, 2023 It has N856 stamped on it. I wanted to post a pic, but the forum only accepts url link now. Quote Link to comment
Stoffregen Motorsports Posted November 9, 2023 Report Share Posted November 9, 2023 Never heard of it, and only found one source of info, which gives little info at all. I suspect it's a stamping, not a cast number...? Stampings could be done at engine reman shops while casting numbers are done at the foundry. Quote Link to comment
datzenmike Posted November 9, 2023 Report Share Posted November 9, 2023 Got to be a Z series engine. Intake on right and exhaust of left??? '81 S110 200sx and A10 Z20E head is 11041-N8561 1 Quote Link to comment
Stoffregen Motorsports Posted November 10, 2023 Report Share Posted November 10, 2023 A part number might be stamped, but there still should be a casting number. Quote Link to comment
datzenmike Posted November 10, 2023 Report Share Posted November 10, 2023 The W06 is the Z20S high compression head used on the mileage option 720. Quote Link to comment
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