Depends on what type it is. For a JTS veloce Alfa recommend a 10W-60. Other models are 10W-40 but this again depends on temperatures encountered. Selenia is the preferred manufacturer. Try this link to narrow it down. http://www.shop4parts.co.uk/index.cfm?action=catalogue.list
Yes
hb 063 360 to 380 cold crank amps...
As long as they are both of the type specified for the engine it should be fine, although there will be some differences in firing time, they are so small to not be noticed.
the twin spark technology used in bikes is to give an instant power to run
are
.028
The number of spark plugs is determined by the number of cylinders not the number of camshafts.
The spark plug gap should be .040"
digital twin spark technology.
If it an opposed twin, then an RJ19LM. If it is a V-Twin, then an RC12YC. Either gapped at 0.028 - 0.030"
The Twin Spark Engines In Alfa Romeo have been in use for some years. these engines are difrfrent from each oter and it depends on what sise,, 1.6 or 2.0 or even V6 so without any information what engine you are talking about this question is not able to answear . Never heard of twinspark v6. But certainly 1.6 1.8 & 2.0 Cant tell you about timing marks but if changing cambelts etc. would not attempt without using "CAM LOCKING TOOLS." It's the only assured way if you want to do it right. Good luck.
Digital Twin Spark with Swirl Ignition...