29-06-2022, 11:10 AM
(This post was last modified: 29-06-2022, 11:17 AM by Alex Myall.)
Ian, I didn't say we set them retarded!
When setting the ignition timing I hold the engine at full power at 3000 rpm and turn the distributor until peak torque is produced. I have found that peak power is produced a couple of degrees retarded from that setting. Many of our engines are trials engines and we test these engines down to 600rpm at full power.
When testing and setting up engines they are set to perform best for their intended use road, race or trials.
Nick, The new distributor you have fitted will (when driving) perform exactly the same as the Bosch (with fixed timing), 2deg advance from 800rpm to 2000 rpm won't make any noticeable difference from fixed timing. The advance that is under idling speed is there to stop it from kicking on start up.
When setting the ignition timing I hold the engine at full power at 3000 rpm and turn the distributor until peak torque is produced. I have found that peak power is produced a couple of degrees retarded from that setting. Many of our engines are trials engines and we test these engines down to 600rpm at full power.
When testing and setting up engines they are set to perform best for their intended use road, race or trials.
Nick, The new distributor you have fitted will (when driving) perform exactly the same as the Bosch (with fixed timing), 2deg advance from 800rpm to 2000 rpm won't make any noticeable difference from fixed timing. The advance that is under idling speed is there to stop it from kicking on start up.