Common Engine Sizes

[Danwvw]

Right, I know there was no factory production of an (1800cc Type 1) but I made one. Did the calculations and it's a little over less than 1 cc over 1800cc's and wanted to know if that is bigger than the Factory type 4 1800cc. Why? Because a lot of people are referring to their (74mm stroke X 88mm) Bore Type 1 engines as 1799cc engines (Why? Probably to distinguish them from the type 4's).
Were the type 4 1800cc factory engines 93 or 94mm bore?

https://www.bughaus.com/Tech_-_Engine_Displacement.htm
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1960 Beetle And 1679cc DP W-100 & Dual Zeniths!

[Busstom]

According to Bentley, 93mm...so 66 x 93 = 1793 (Bentley states 1795 cc).

[bugguy1967]