Whats needed to convert a 3.9L to 4.0L
#11
These two engines are fundamentally identical. There is no difference in displacement, the designation was merely to indicate that one had DIS and the other had a distributor.
Camshaft/front cover and depending upon the year of the 4.0, the fuel rail may even be retained-if it's non-AEL.
It may or may not need a crankshaft space, but they are easily enough made from an old crank gear.
One note-depending upon the year of the 4.0, you may need to retain the flywheel from the original engine.
Camshaft/front cover and depending upon the year of the 4.0, the fuel rail may even be retained-if it's non-AEL.
It may or may not need a crankshaft space, but they are easily enough made from an old crank gear.
One note-depending upon the year of the 4.0, you may need to retain the flywheel from the original engine.
#12
The D&D site has tons of stuff like distributors and the drive gears and such. I like the valve covers that they have to dress up the 4.0's as well.
The swap with another member could also be a good move.
If you add your location in your profile, you may find others nearby that are RoverHeads.
The swap with another member could also be a good move.
If you add your location in your profile, you may find others nearby that are RoverHeads.
#13
The D&D site has tons of stuff like distributors and the drive gears and such. I like the valve covers that they have to dress up the 4.0's as well.
The swap with another member could also be a good move.
If you add your location in your profile, you may find others nearby that are RoverHeads.
The swap with another member could also be a good move.
If you add your location in your profile, you may find others nearby that are RoverHeads.
#14
#15
#18
#20
I converted a 4.0L to run on a four barrel carb a number of years ago. I would NEVER try to go forward with the injection system. By that I mean 14CUX to GEMS. The later conversion is way to much trouble. Use the front engine cover so you can install your distributor, get a new cam and lifters (you'll need them anyway), block off the hole in the back for the crank sensor and you're pretty much there. Drop the 14CUX intake and plenum on the 4.0L long block and you're set.