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Re: Re timing marks

To: "frogeye" <frogeye@swcp.com>,
Subject: Re: Re timing marks
From: "frogeye" <frogeye@swcp.com>
Date: Fri, 18 Jun 2004 08:14:51 -0600
OK you guys...IF the throttle stops have no purpose, as the majority seem to
believe, then WHY did the manufacturer even bother to provide an
"adjustment" device when a simple non-adjustable stop would have sufficed?
Dave
Frogeye@SWCP.com Taos Garage Annex in Albuquerque
'62 BT7 MK II,  '54 BN1,  '62 Fiat 1600S
http://www.britishcarforum.com/TaosAnnex.html
----- Original Message -----
From: "frogeye" <frogeye@swcp.com>
To: "Michael Salter" <msalter@precisionsportscar.com>; "'Scot paulson'"
<SPAULSON1@compuserve.com>; "'Dave & Marlene'" <rusd@velocitus.net>;
<healeys@autox.team.net>
Sent: Thursday, June 17, 2004 7:07 AM
Subject: Re: Re timing marks


> > Michael, et.al,
> >  I agree right up to #2. I always adjust the throttle stops at about 1
> turn
> > ON the stop.
> > This allows about < .010" clearance between the bore and the butterfly
and
> > will prevent the butterfly from sticking, distorting and wear from use.
> Then
> > the air bleeds SHOULD be used to set the final idle speed....Michael,
your
> > thoughts..
> > Dave
> >
> > Frogeye@SWCP.com Taos Garage Annex in Albuquerque
> > '62 BT7 MK II,  '54 BN1,  '62 Fiat 1600S
> > http://www.britishcarforum.com/TaosAnnex.html
> > ----- Original Message -----
> > From: "Michael Salter" <msalter@precisionsportscar.com>
> > To: "'Scot paulson'" <SPAULSON1@compuserve.com>; "'Dave & Marlene'"
> > <rusd@velocitus.net>; "'list'" <healeys@autox.team.net>
> > Sent: Wednesday, June 16, 2004 6:30 PM
> > Subject: RE: Re timing marks
> >
> >
> > > Hi Scot,
> > > The relationship between the mixture enrichment caused by pulling the
> > > choke, and the normal running mixture is not really adjustable.
> > > IMHO the important things are to ensure that the idle mixture is set
> > > correctly when the engine is at normal operating temperature and that
> > > the engine idle speed is set using the slow running valves, once that
is
> > > done most BJ8s will start from cold with about 1/2 choke unless the
> > > temperature is really low, like below freezing.
> > > On BJ8s it is very common to find that the idle speed has been
adjusted
> > > using the fast idle screws rather than the slow running valves. This
is
> > > usually necessitated by some other factor such as incorrect timing, or
> > > incorrect mixture adjustment which prevents the engine from idling
even
> > > with the slow running valves wide open.
> > > The result of using the fast idle screw to set the idle is that the
> > > throttle starts to open as soon as one starts to apply the choke and
> > > then the engine is reving way too high before the mixture enrichment
> > > begins.
> > > So here is the procedure I use, the whole carburetor adjustment
> > > procedure takes about 2 minutes.
> > >  With the ignition system set up correctly.
> > > 1. Get the engine hot and adjust the jet adjusting screws to get the
> > > fastest idle; which you can check by lifting the piston.
> > > 2. Ensure that the tips of the fast idle screws are about 1 turn off
the
> > > stop on the throttle shaft.
> > > 3. Adjust the idle using the slow running valve.
> > >
> > >
> > > Michael Salter
> > > www.precisionsportscar.com





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