"I've since wondered how much timing was affected during reasonable compression adjustments. Probably not enough to worry about."
That's the main point of the compression adjustment--to advance/retard the timing.
I was, of course, referring to exhaust timing, if the cylinder did move as my 16 year old eyes saw it. I did know about contra-pistons, so I was surprised. Since I don't have the engine anymore, and can't recall just where it went, that's all I've got. It seemed like a silly way to do it, what with a blind bore (if I am correct), but O&R and probably others had done that about 20 years prior. I wonder if maybe newer production Taifun Tornado 2.5's might have been changed to a typical contra-piston design to reduce production cost? Other things about it I recall are that it had a full crank disc with zero counterbalancing, it vibrated a lot, and one of the ball bearings was bad. First bb engine I ever had, 61 years ago.
Ignition timing would definitely depend on compression, plus fuel mix, probably cooling ducting efficiency (if any) and I would suppose, needle valve setting. But I'm not much of a diesel fanatic.
Steve
Topic: Price of Hurricane Taifun 2.47 Diesel engine? (Read 1031 times)
