I have recently added a second Boinc project (Superlink@techion) I was already running WCG. When i look under the disk tab in Boinc manager it states that
i have 182.51 free disk space Used by boinc 105.87 MB
Used by other programs 35.58 GB.

Disk usage by project is WCG 104.99 mb Superlink 1.40 KB.

I am not in any way technically minded but how can Superlink run when almost all of the disk usage allocated to Boinc is taken up by WCG?
Do i have to increase the disk space used by Boinc If so how do i do this?

Apologies in advance if this is a dumb question.

You don't say what the total disk size is. Perhaps the 182.51 is in GBs?

If so, just allow BOINC to use more of it, in your preferences on the project.

Your account page -> Computing preferences -> Disk and memory usage

Or

On each computer, in: Menu -> Advanced -> Preferences -> disk and memory usage