Re: Timing the 1275 ? (vac. advance with a sidedraft)

[Richard Shipman <mbelect@mindspring.com>]

I don't understand... If the vacuum advance on my '74 Midget works with
manifold vacuum, why won't manifold vacuum work with other configurations??

Richard
'74 Midget
'68 MGBGT
'58 Morris Minor


>Variable vacuum.  At the manifold it is 100% vacuum providing  100% advance
>all the time.  Just before the throttle plate it is variable.

>
>>Can anyone explain to me why my '74 Midget with SU's has a simple vacuum
>>advance fitting right on top of the intake manifold and yet so much care
>and
>>attention is being taken to locate the vacuum pick-up at a specific point
>on
>>a sidedraft weber??
>>
>>What am I missing??
>>