+- Austinsevenfriends (https://www.austinsevenfriends.co.uk/forum)
+-- Forum: Austin Seven Friends Forum (https://www.austinsevenfriends.co.uk/forum/forumdisplay.php?fid=1)
+--- Forum: Forum chat... (https://www.austinsevenfriends.co.uk/forum/forumdisplay.php?fid=14)
+--- Thread: Ruby carb jetting change running on SWB? (/showthread.php?tid=6988)
Ruby carb jetting change running on SWB? - JonE - 19-12-2021
Has anyone found that the Ruby sidedraft Zenith has benefited from different jetting when running on a smaller lighter earlier car? Would be interested to hear any experimentation.
RE: Ruby carb jetting change running on SWB? - AustinWood - 19-12-2021
Sounds unlikely.
RE: Ruby carb jetting change running on SWB? - Howard Wright - 19-12-2021
Hi Jon
My opinion (and it is just that) is that carb set up is fully dependent on engine characteristics and not on the weight of the car!
Cheers
Howard
RE: Ruby carb jetting change running on SWB? - Ivor Hawkins - 19-12-2021
Hi Jon, I ran a three bearing motor in a Chummy for years on the standard Ruby jetting and it ran perfectly, with a good plug colour and excellent fuel consumption.
If it ain’t broke...!
RE: Ruby carb jetting change running on SWB? - JonE - 19-12-2021
good. that's what I need to hear. Thanks all.
RE: Ruby carb jetting change running on SWB? - Bob Culver - 19-12-2021
Exhaust sytems affect optimum jets . For some reason unobstructed sytems seem to run more rich. Side exit possibly represent such. My RP feell from 50 to 40 mpg when a lightly baffled silencer fitted.