Not sure you need that for the distributor, so those connectors should work ok.
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I know that if you run bike carbs on say a pinto you have to leave the vac advance disconected or change the dizzy.
I know that some people use a small copper tube with 4 from the carbs into 1 then accross to the dizzy, so would this work as they are cheap, its from
micro bore plumbing £3.00.
This is how I've done it for magajolt, the large tube provides smoothing for the vac pulses.
Not sure you need that for the distributor, so those connectors should work ok.
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Pretty sure that it doesn't work for vacuum advance.
you need a proper vacuumless dizzy or megajolt, or just run it without the vacuum connected and advance the timing to suit.
I'd go with a Megajolt - I had no choice as I run a Zetec, but it is an excellent piece of kit. Being able to connect the laptop and adjust ignition settings accurately on the go is great.
im running zx6 carbs on a 1600cvh using the standard vacume advance dizzy connected with 4 hoses from the manifold with no problems
quote:
Originally posted by will121
im running zx6 carbs on a 1600cvh using the standard vacume advance dizzy connected with 4 hoses from the manifold with no problems
quote:
Originally posted by mookaloid
How do you know you have no problems? just connecting it all up will not reveal that the vac advance is not working. if you disconnect it from the vac advance and plug the pipe does it make any difference? if not then it wasn't doing anything in the first place.
It won't work because there's nothing to maintain the vacuum between pulses on each of the cylinders.
ie when one cylinder is sucking, it won't pull the vac advance because there is an open to air inlet somewhere else and it's easier for air
to flow in from one of the other inlets than to pull the vac advance forward. in other words as vacuum is created by one cylinder it is lost by one of
the others.
But don't take my word for it, try it with a vacuum gauge and see for yourself.
I'm not saying there won't be any vacuum at all because the 'inertia' of the air will provide a little - enough I believe to read
with a MAP sensor for MS but not enough to activate a vacuum advance properly.
I understand that Bogg brothers don't think it works either perhaps a call to them would clear things up?
Cheers
Mark
Im with Mookiy on this one i had all my vacuum tubes connected together and to the dizzy
Bogg brothers removed them when setting my carbs Mr Bogg set my dizzy to 34% at 3500 rpm till i could get a modified dizzy
Jacko
Vac advance is just a part throttle ecomomy device, to enable the engine to run with a weak mixture.
If your carbs aren't designed to work with it don't use it.