[Spridgets] SU throttle overrun valves

[David Lieb]

Dunno bout everyone else's opinion, but I would recommend going to Joe Curto 
and buying a new pair of throttle shafts and a new pair of butterflies 
without the valves. They were only engineered to pass the period emissions 
tests, NOT to actually improve the emissions at all ;-) Joe insists that it 
only takes one good backfire to melt the solder and swallow the poppet 
valve. Is it worth the risk?
David Lieb
1972 1960 1974 1973