On Dec 30, 11:54 pm, "gazz" wrote:
tho trannies usually
have such badly set injection timing they knock like hell anyway.

Err, EVERY diesel engine knocks - at a rate of 4000 times a minutes.
"Knock" in a spark ignition engine (petrol, LPG), occurs when the
mixture is ignited by compression. Diesel engines are compression
ignition engines, and are *supposed* to ignite like that.