Do I need vacum advance with weber twin 40's on 1.6 crossflow

[MK1 WIDOW]

Hi All, Just after some advice/clarification. I've got a totally reconditioned 1.6 crossflow, rebored etc, with a 1.6gt head, the heads been polished unsure if ported. My question is...Do i leave the vacumn advance pipe disconnected with twin 40's. I've purchased brand new twin 40's jetted for a 1.6 crossflow, was told I don't need the vacumn advance???

Any advice really appreciated

[Graham]

leave the vac advance disconnected, BUT you will need to advance the timing by several degrees

[MK1 WIDOW]

Thanks, How far do you reckon I should advance when setting up, around the 12 degree mark ? hopefully be plumbing the carbs in within a week or so.

[Graham]

12-14 seem the norm

[mexicotait]

I did this as graham said and it ran spot on

[MK1 WIDOW]

Thanks guys !