My 5th LEGO diesel engine. This one isn't my favorate by a long shot, but I do like the V-twin design. The part I hate most about it is the cam shaft, I couldn't get it right so I just stuck it to a 2 valve engine. I'm glad I planed it to be a 2 stroke engine, because a 4 stroke 2 valve wouldn't work well at all.
LDV-6 will be a the best engine, but maybe be better than LDV-4 which is my favorite so far.