TOPIC:

I seem to go through about a litre(quart) of oil every 2000 Kilometer(1200 Miles), is this normal for a KZ1100 or not? It seems to run great, but if I went through that much oil in my SUV I would worry.

What kind of oil? I switched from Castrol GTX 20/50 to Rotilla and stopped burning oil. Valve guide seals will do that too.
Steve

I'm using 10W40 Royal Purple synthetic wet clutch motorcycle oil. I was thinking seals also.

I was using 1 QT every 400 miles and fouling plugs. I knew my seals were bad but I wanted to replace the valves, springs and seals all at once. I collected everything I needed as funds would allow and did it in two days. Valve train sings again but I still was burning a little oil. Switched to Rotilla and it stopped. I just put in 1/3 QT for the trip and I'm at the top line. Never had it so good.
Steve

Nobody wants to burn oil obviously, but 1200 miles to a quart is not bad on a KZ1100. Actually even if you buy a new car, 1000 miles to a quart is still considered whithin range. I'm like Steve, on my KZ1000 at 40,000 miles I was burning a quart every 400 miles and fouling plugs. In my case I just went ahead and did a valve job and first rebore and then no oil consumption. I know the 1981 and up KZ1000 and KZ1100 were always known as oil burning engines. They had some quality problems, but 1200 miles to a quart is no big deal for that bike.11

The early 1000's had steel valve guides. They were known and there was a recall finally. My neighbor was a dealer at the time. They made more money on factory jobs than tune ups.
Steve

Also depends on the temperature, my Z1r can go 4,000Km without a fill and the oil is just above the low mark. During the hot summer (around 35 degrees C temperatures) on a trip it might use that in around 3,000Kms

The frequency of high rpm riding will skew the mpq too...
Sometimes its hard to say no when she wants it.