TDNation
Well-known member
Was not sure if this applies to this thread, but I thought that some might find the size comparison interesting. This is a MAN (technically owned by VW...) 600 mm bore exhaust valve from a slow speed diesel engine on a Chevron tanker next to my Golf. I have other photos if interested, as some of these engines surpass 900 mm bore and a 3 meter stroke length. Cheers