Re: [T3] Too much advance

["Mark @ Mo-Sys" <markse@mo-sys.com>]

----- Original Message -----
From: "Jim Adney" <jadney@vwtype3.org>
To: <type3@vwtype3.org>
Sent: Tuesday, April 27, 2004 4:40 AM
Subject: Re: [T3] Too much advance

> I'd say that your idle advance setting is too far advanced. You should set
the
> timing such that you can get about 30 deg of advance max out of the
mechanical
> advance ALONE. Adding in the vacuum advance can bring this up to 40, but I
> don't care for the fact that you can get this while standing still. I
wonder if
> you've got the wrong carbs (with the wrong vacuum pickoff port) for your
> distributor.

Nope- now I have the original carbs fitted with the original distributor (at
least they are the ones that came with the car and have suitable part
numbers) I have it set to 7.5 deg at idle with no vac as per instructions
and it maxes out at 30 something degress so I think its OK. It is the vac
advance whilst stationary that is worrying me. Do the vacuum cans fail by
getting too soft?

> > I disconnected the vac and ran the car on a longish run this weekend and
it
> > ran better than before. Timing is stock 7.5 deg adv at idle and
otherwise
> > the dizzy is in very good health. Any ideas?
>
> Is this the stock dist? The carbs and dist have to be matched. If they're
not,
> then differences in the vacuum advances can get you in trouble. I have the
> impression that you were actually the one who figured a lot of this out
for us.

Yep that was me and I'm still having troubles :-(

Mark


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