I have an air leak coming from the vacuum nipples on the inlet manifold, the brass nipple is very loose and air is getting in, anybody have a home remedy for this like using brass splicers or inserting a larger brass tube and capping it off..

Here's a pic of the motor

If you still need it for a vacuum supply I would find a slightly larger diameter tube and push it in or insert a 5 or 6mm bolt.

As a home remedy I'd use some silicon sealant, put it on the pipe part but not on the end so when you stick it in nothing goes inside.

As a long term solution I'd look for some inlet manifolds. I think the FZ600 used the carbs from the FZR400 because the frame was too narrow for bigger carbs. The FZ used the XJ600 engine and I think the XJR used the XJ engine .... hope you follow that :) You'll need to do some home work on that so measure the internal dia of the carbs (32mm ?) and try to match them up.

^ Correct

Ye I'm currently trying to source some 4mm brass pipe for the inlet rubbers. They aren't in bad condition, apart from the holes for the vacuum supplies and I dont mind a bit of DIY

Is there a vacuum to the fuel tap then ?

Ye no.1 goes to the back of the pet cock

Is there another stub that has a take off point ? maybe you could use that and seal no1 permanently, you might need a new bit of vacuum pipe but it would be easier than finding new stubs

Got everything sorted, il post a pic up when she's up and running.