They will handle tall thick grass all day better than any four stroke (except maybe an expensive Honda OHV).
You were right the first time MF; better than any 4 stroke I have ever used or heard of. The Honda 4 strokes are very good but not quite the same
Only Honda I have used in anything resembling thick grass is the one I built for myself (v40 chonda on hru19d deck) - cuts grass very well, but I highly doubt it would handle super thick grass like a Victa 2st.
I did a desperately needed Buffalo lawn scalp and ended up getting a full catcher off every 6-9m and it didn't sweat. And that was the low comp version.
And if I had a dollar for every mowing contractor I've heard say how usless the SP honda's catcher is in thick or wet grass.
Back to SR's ignition, it is worth noting you don't need a genuine victa module. Something like this will suffice (actually looks identical)
https://www.ebay.co.uk/itm/UNIVERSA...SER-LAWN-MOWER-TRACTOR-SIG/123527703153?
