newbie

g,day long time rider new to this site just got my self a 1986 gpz600r 58111ks goes good havent done the oil,plugs,filter yet n there is a rumble when its not in gear but goes out when its in gear what oil is good for the old girl live in brisbane looking to go for a ride

Welcome to KSRC.

Welcome. Those motors did sound like a bucket of bolts at idle. Without hearing the sound I cannot tell you if it's a normal GPz motor or if it is unhappy. But the clutch baskets in particular sounded like a dry bearing almost from new. If the clutch is pulled in it stops yeah? If so, most likely the clutch basket is the culprit. But, before ordering a new one, remove it and have a look as it may be just the normal mechanical groanings of a GPz donk. If the basket is worn, replace it as the fingers sheer off and tend to make the remaining bits very unhappy too.

G'day and welcome boner

If the clutch is pulled in it stops?

yeah when clutch is in it half sops the noise

Welcome mate......

Welcome!