Preferred SU ?

[Terry McGrath]

I use a one inch side-draught pre-war SU bolted, with thin adapter, onto a ruby manifold with the restricting venturi orifice ground out.
This is on my RF saloon in place of the updraught Zenith. All-round improvement; simplicity, adjustability, starting and performance.
My theory is that Sir Herbert would have used S.U.s if they had not been owned by his arch rival.