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I have been looking around for information on the 1600 and 1800 engines used in Alfa 75's. Were they the same design used in the 105 series cars? Did they use the same wide heads with big chambers and high dome pistons?
How about crankshafts - 6 bolt or 8 bolt?
Thanks
Dave
 

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Yes, they used the Nord engines too.

The number of bolts are a very interesting question, I think all 116/162 series cars had the same number of bolts, 6, only because the flywheel design doesn't really allow for anything else with that interfact to the Guibos.
 
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