Re: [T3] Too much advance

[Ben Doughney <ben_d@clear.net.nz>]

<x-flowed>On 28/04/2004, at 11:53 PM, Mark Seaton wrote:

> Hi Ben, do you mean in the manifold? I never saw a vacuum port 
> directly in
> the throttle plate, but the usual port on the left side of the left 
> carb
> actually goes through a passage down to the throttle plate aperture on 
> my
> late carbs, though I do have a set of earlier carbs that have 2 
> apertures- 1
> in the throttle plate and one close to the narrowest part of the 
> venturi,
> that both join up and come out a similar port on the side of the carb.

Yes, sorry I meant to say below that throttle plate. I did hook up a 
vacuum gauge when I was fiddling around with distributors after I first 
got the car. I found that if you were going at a constant speed, the 
vacuum was reasonably high, but if you opened the throttle, going up a 
hill etc, the vacuum would back off, and I presume this is where the 
mechanical advance would take over.

Ben Doughney

'63 1200 - Ringo
'71 1600TL
'65 1500N - Val
'70 411L Variant
'70 NSU Ro80

http://members.tripod.com/~superkafer/
http://www.vwownersclub.co.nz

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