Homer

Ideally it should have been balanced without the flywheel . usually they balance the motor , then attach a balanced flywheel and front pulley, then a pressure plate  . Idea being that if any of these components need replaced later  all that is needed is to fit a new balanced item and everything is balanced . If they balance the whole plot as an assembly  changing one component later would require re-balancing the whole plot again. There is an exception  and that is if the front pulley and /or the flywheel have counter weights built into them  for balance purposes , this is known as an externally balanced ( flywheel and pulley with counter weights outside the motor ) internally balanced  means all the counter weights are on the crankshaft  and the flywheel and front pulley are  just essentially a rotor  which is balanced in it own self ............  guess Im leading up to saying  I don't know weather an Essex V6 is externally or internally balanced

Just been googling  and it would seem that the Essex motor is externally balanced  so you would need to fit the correct unmodified  flywheel. .

 I googled " Essex V6 balancing " .  some of the pix clearly show counter weight on the flywheel.

Could you fit  say a 4 efe ( 1330cc ) flywheel , if it was any lighter , I know the cranks are diff ( longer stroke )  but if the flywheel had the same bolt pattern it may be cheaper to have the flywheel re-drilled to suit a turbo  pressure plate. You could bug the guys at the local clutch shop for specs on different PP's...... maybe a diesel PP has a stronger diaphragm. I have been told not to machine weight off a standard flywheel   but then we were talkin cast iron  , and anyhow they are all machined to spec after casting/forging. If your not going to rev the nuts off it a modified stocker may do the trick . One ( of many ) good thing about jappers is that a whole bunch of stuff  from similar models will often fit. Thousand bucks is a lot of hay ..... I paid under 5 hundy for my ally ( with steel insert for the clutch ) Rover V8  flywheel  and ...............well , next time I have the box off Ill be refitting a lightened stock steel job  as its just a bit  to light  for road use ( over did it a bit with the cam too )

Don't want to appear "nit picky" or anal , not even overly nosey ,but my crystal ball don't work over xmas break and my clairvoyance don't work after a few ............Soooooooo (its a biggie ) what sort of car do you have ? , Im no novice when it comes to cars and Im fairly sure that all flywheels aint all the same . The one off my pinto motor deff doesn't fit the Rover ( hasn't even got the same bolt pattern). I do have a really light flywheel ( ally ) offa my old Poulan chain saw, not sure if it would fit tho as it only has one bolt hole ( in the middle )and almost nowhere to hang a clutch off

If your going to run LED's , probly be easier and cheaper to run a total loss system ..... that is as you say ... charging the battery with a charger when needed . If you use LED's the power used would be  little and a small  gel battery would last ages. Why not see if the A50 stator ( and possibly flywheel ) , or even just the lighting coil  fit the RM motor ....stranger things have happened

Cool bike . These old bikes sure can be a learning curve  and if your starting to loose heart have a look at what the pomms pay for them now ( classic bike mag ) , I reckon NZ is about 10 years behind UK classic bike prices . The kickstarter is a bummer , you'd probly find that its been a bastard to start for years ( carbs ? )  and the shaft has just fatigued . Have a good look at the sprag clutch ( or whatever one -way drive device is) behind the flywheel , probly find issues there  and this will be why the chain and sprocket have been removed.

 Hamish

I bought the equivalent set up for my Rover V8 motor  and am well happy with it , the price, and the seller .

I have an Allison  ignition  module driving a  coil I stole of the Mrs's MR2   on my Capri .................enough spark to kill a horse

I have put a t9 in my Capri , had to get the drive shaft re made at the yoke splines are diff, probly the worst part was coughing up for the new yoke , made some " adaptors " for the rear g/box mounts that the wof man was happy with , ( didn't have to get it certified )  ( pix if you want ). Speedo is so close I didn't bother adjusting it . With a 3.44 diff it does a mick hair over 2500 rpm at 100km/h in 5th  

Name .. Hamish (52 )

at Thornbury  Southland

Mk3 Capri 2l ( Rover 3.9/5 speed waiting  under the bench )

Toyo Blade

1974 Guzzi 850T

RD 400 Yam

 Ducati Paso