TR4/4A TR4 Timing, 270 Cam, Pertronics

[MikeH]

Hi All, I have a TR4 with a 270 degree cam, slighty higher compression, and a pertronics ignition. I need opinions on proper timing for this set-up, from idle to total advance. Thanks,

 

[MadMarx]

fly weight advance at 4500 rpm < 30°

idle advance ~ 8-10°

 

[MikeH]

Thanks Marx, I assume by fly weight advance you mean vacuum disconnected?

 

[MadMarx]

Yep...that`s right.

I was in search of the word "vacuum advance" sorry for that. My English sometimes fail.