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after little searching, i found out that 1.9 rod lenght is 5.1945(131.94mm). i'm not 100% sure about this cause, 1.6cvh rods are the same lenght. If you are planning to fit 1.9 crankshaft to 1.6 block, you'll need lower pistons cause 1.9 deck is 0.16732(4.2499mm) higher that 1.6.