Fitting double row timing chain

[SSbeast]

I here u can fit a double row timing chain to a VR V6, but hear u have to remove the balance shaft and completely balance the bottom end. How do u completely balance the bottom end or know if it is? Thanks.

[Slow VR]

Why bother, these engines seem to be able to do a trillion k's b4 needing a rebuild. Never heard of 1 snapping a timing chain, sure they will stretch, but just replace with single row. Not worth the hassle.

[greggy79]

you can n they fit them they aint that much trouble so i figured out the hard way

[Jxw]

only reason you'd install a double row was if you changed the cam, valve springs etc and put excessively more load on the cam.
for standard applications the single row is fine, install a roller chain and get rid of the crappy link chain.

you'd balance the bottom end the same as any engine (basic version)
match all the pistons to the same weight.
match all the conrods to the same weight.
put special weights on the crank shaft to maintain the weight of the rod/piston assemblies (i forget it but there's an equation to work that out)
then it'd be put on a special machine that spins it and the person doing it would grind bits off the counter weights (or drill and add a heavy metal if needed)

not a cheap easy thing to do and unless you were putting the engine in a racing vehicle and intended to spin it past about 6500 rpm on a regular basis and i guess you'd be blue printing the engine, not worth it imho