There was a recent discussion on the list and/or 311s.org regarding those
holes. Sorry, but I don't feel like searching the archives myself.
IIRC, they're casting bosses that are plugged with screws at the end of the
manufacturing process. I don't remember if someone had tried using them to tune
the SU's with a manometer or not. I do know that several folks have used the
smog ports on the later model 1600 heads to hook up a manometer, though that
doesn't do a 2000 owner much good. :--(
Pete
-------------- Original message ----------------------
> peter harrison <granvillecomputing@hotmail.com> wrote:
>
>
> Hi
>
> On the intake maifold there are two set screws - one on each set - i have
>been
> told that they are there for balancing/assessing the intake airflow - anyone
> aware of the reality of this statement and the appropriate tools
>
> Peter
>
> ----------------------------------------
> > From: aultgc@att.net
> > To: gtpjimgammon@yahoo.com; datsun-roadsters@autox.team.net
> > Date: Mon, 24 Mar 2008 19:23:11 -0500
> > Subject: Re: [Roadsters] Carb Setup
> >
> > Jim,
> >
> > I have always set the mixture at idle, then balanced the carbs at higher
> > speed, which is consistent with the Nissan shop manual. I believe adjusting
> > the mixture at speed (after adjusting it at idle) would screw up the idle,
> > since there's only one adjustment I'm aware of.
> >
> > Anyone else care to weigh in?
> >
> > Gary Ault
> >
> > ----- Original Message -----
> > From: "Jim Gammon"
> > To:
> > Sent: Monday, March 24, 2008 6:51 PM
> > Subject: [Roadsters] Carb Setup
> >
> >
> > > Hi
> > >
> > > I looked, but didn't find.
> > >
> > > Could someone please send a link to the procedure on setting up SU carbs
> > > on a 2000?
> > >
> > > I just can't recall how, though it has only been 30 years since the last
> > > time I did it....
> > >
> > > I have the idle setting on each carb, and an air flow meter, but I can't
> > > recall how to do the higher speed mixture setting.
> > >
> > > JimG 1969 2k
> > > ________________________________________
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