I have removed a number of blade disk nuts from Victa 2 strokes however I have one that I just cant get undone no matter what I try.

I have soaked the nut and washer in wd40 and tried to use the breaker bar and it wont budge. I have also tried using a spanner and hitting it with the hammer and it still wont budge.

The engine is tired however I want the base as I have a number of good engines to transplant onto it!

Any ideas would be appreciated as I am very close to breaking out the angle grinder and cutting it off. Meaning I have to scrap the engine.