Mag Timing Performance Impact

[201er]

Besides Byron, has anyone witnessed any speed impact by adjusting magneto timing? How much and on what model/engine? Fuel savings or LOP improvement?

[HopePilot]

And to add to the question, is it safer to have a 20 degree mag and let timing creep to 23 degrees or have a 25 degree mag and 23 degree timing on your engine?

[N201MKTurbo]

I don't get the question...

If you advance the timing you will get more power, at the risk of detonation. Conversely, if you retard the timing your engine will be safer with less power.

The only legal thing to do is set the timing to the data plate setting. If you want more power shove all the knobs to the firewall and burn more fuel.

You will get the best performance if both mags have their internal timing set the same and correct and the engine timing as closely synced as possible.

[N601RX]

If you read any NTSB accident investigation where engine failure is a remote possibility you will see that mag timing is one of the 1st things they check. If you have made post on internet forums bragging about playing around with different ignition timing that pretty much leaves you with zero wiggle room.

[PTK]

Besides Byron, has anyone witnessed any speed impact by adjusting magneto timing? How much and on what model/engine? Fuel savings or LOP improvement?

On the B6D the mag timing is already at 25 degrees. Why and to what would you change it?

[danb35]

On the B6D the mag timing is already at 25 degrees. Why and to what would you change it?

Byron doesn't have a -A3B6D engine any more; he has a -A3B6. Individual mags, and it comes from the factory with 20 deg. mag timing. However, changing it to 25 is apparently legal if the i's are dotted and the t's crossed.