I believe the bore and stroke limit should be increased, there were several mass produced 4 cylinder(at minimum over 1 million) and inline 6 engines that had a 4.375"(111.1mm) stroke which cannot be reproduced in Automation at this time, most is 3.937"(100mm), there is at least one motorcycle with a 4.4"(112mm) bore also but was a difficult example to find.
Revamp coming in late september (or october) will have these limits increased.
YAY!!! Cant wait! 
The new limits for all engines will be 120/120 mm 
Oh this will be fun This is like Minecraft all over again, cant wait for each update!!!
i like to see fiat punto gt stroke there too (67.4 mm / 2.65 in)
80.5 × 67.4 mm
Yes, that bore/stroke setting won’t be a problem in the revamp.
nice