What engine is it?

[HJK]

I bought this engine in a package a couple of years back. There's no label on the bag so I'm not sure whether it's a yellow big 12v or a Detroit 12V71.Does anyone know and can help? Thanks, Juergen

[Force]

Detroit Diesel 12V-71, looks like the engine from Tyrone Malone Kenworth Super Boss or a copy of it.

Edited March 17, 2021 by Force

[HJK]

Thank you, Håkan. Do you know by any chance what are the extrusions on top of the covers? Do you have a construction sheet for the engine? Thanks a lot, Juergen

[Force]

They are breathers.

[HJK]

Thanks very much, Håkan. This helps a lot, Juergen

[Force]

Don't mention it, glad I could help.