R ROVERROD New Member Jan 20, 2014 #1 I frequently see references to the 3.9 and 4.0L engine. Are they actually the same?. ie, 3.9 is nominally 4.0L
I frequently see references to the 3.9 and 4.0L engine. Are they actually the same?. ie, 3.9 is nominally 4.0L
jamesmartin Well-Known Member Jan 20, 2014 #2 ROVERROD said: I frequently see references to the 3.9 and 4.0L engine. Are they actually the same?. ie, 3.9 is nominally 4.0L Click to expand... bore diameter is the same as is 4.6 ,but later 4 litres have bigger crank journals than 3.9 and ecu controlled ignition as well as fueling were 3.9 only has the fueling
ROVERROD said: I frequently see references to the 3.9 and 4.0L engine. Are they actually the same?. ie, 3.9 is nominally 4.0L Click to expand... bore diameter is the same as is 4.6 ,but later 4 litres have bigger crank journals than 3.9 and ecu controlled ignition as well as fueling were 3.9 only has the fueling
R ROVERROD New Member Jan 22, 2014 #4 I gather from what has been posted that they are 2 separate entities. Thanks for your replies guys.
zen Well-Known Member Events Planner Jan 23, 2014 #5 4 litre is better block and crank..same slippy liner problems..
