- Mon May 03, 2021 7:10 am
#50011
Hi,
The engine is a Chev 350 running Holley TBI and MSD 8 Pin HEI, this is all working, just in the process of optimising. The information I am getting on timing curves is all based on mechanical distributors, so just want to run it past someone who knows . V0.4 board
The timing information I am getting is 12 deg initial, 32 deg total with the vacuum disconnected. For the vacuum advance it is variable, but seems to be 10 deg is about average.
So if I am getting this right the bottom left cell will be 22deg (12+10) @600rpm, 30kpa and the top left 12deg (12+0)@600rpm, 100kpa. For the next part I will be showing linear advance all the way for simplicity of description. Far right bottom cell will be 42deg (32+10) @5500rpm, 30kpa. Far right top cell will be 32deg (32+0) @5500rpm, 100kpa. A simplistic table below.
100kpa 12deg ----- 32deg
30kpa 22deg ------42deg
-------- 600rpm -----5500rpm
The base tables have nowhere near this amount of advance which is why I am concerned I am crossing things up somehow.
Cheers Col
The engine is a Chev 350 running Holley TBI and MSD 8 Pin HEI, this is all working, just in the process of optimising. The information I am getting on timing curves is all based on mechanical distributors, so just want to run it past someone who knows . V0.4 board
The timing information I am getting is 12 deg initial, 32 deg total with the vacuum disconnected. For the vacuum advance it is variable, but seems to be 10 deg is about average.
So if I am getting this right the bottom left cell will be 22deg (12+10) @600rpm, 30kpa and the top left 12deg (12+0)@600rpm, 100kpa. For the next part I will be showing linear advance all the way for simplicity of description. Far right bottom cell will be 42deg (32+10) @5500rpm, 30kpa. Far right top cell will be 32deg (32+0) @5500rpm, 100kpa. A simplistic table below.
100kpa 12deg ----- 32deg
30kpa 22deg ------42deg
-------- 600rpm -----5500rpm
The base tables have nowhere near this amount of advance which is why I am concerned I am crossing things up somehow.
Cheers Col