[ROVERNET - UK] RE: 2000TC Ignition Timing
slatskars at comcast.net
slatskars at comcast.net
Tue Apr 15 19:02:54 BST 2008
You may be right, but in my limited experience (since 1958) I have had great success with a piece of hose when a Unisyn is not available. This was the tried and true method, before any of the later innovations. I never did like those kits with the wires sticking out of the top of the carb. I highly recommend the Unisyn, as you are measuring air flow not a physical height element, when I hold my tech sessions for our Club T-MG group, but also demonstrate the hose method. Surprisingly accurate!
Slats
-------------- Original message ----------------------
From: "Netspace" <vmitps at netspace.net.au>
> On the TC I just look at the dashpots (without the air filter...).
> You can compare them quite easily, I think it is more accurate than
> listening.
>
> PVS
>
> ----- Original Message -----
> From: <slatskars at comcast.net>
> To: <rovernet at lyris.ccdata.com>
> Sent: Tuesday, April 15, 2008 3:52 PM
> Subject: Re: [ROVERNET - UK] RE: 2000TC Ignition Timing
>
>
> > Adrian,
> >
> > The old way of carb mixture and balancing (before Unisyn's) was to raise
> > the carb piston slightly using the pin or a small screwdriver. what you
> > wanted was a slight increase in RPM followed by a drop in RPM. If it
> > immediately dropped, the mixture was too lean. If it increased and kept
> > increasing as the piston is raised, too rich. After setting the mixtures,
> > put one end of a small diameter hose in your ear with the other ablut 1/2'
> > into the throat of one carb and listen to the air flow. Compare it to the
> > other and adjust them until the air flow sounds equal. Reconnect the
> > linkage and you are good to go. It really works and did for many years. If
> > you read the manual it will tell you to tune the mixture for the best
> > speed (In American English, that is the highest RPM). that is a good place
> > to start, but you ddo want that slight increase followed by the drop off.
> >
> >
>
>
> _______________________________________________
> rovernet mailing list
> rovernet at lyris.ccdata.com
> To unsubscribe, go to this web page, look near the bottom and follow
> instructions:
> http://mailman.nipltd.com/mailman/listinfo/rovernet
> Back-up list and photos at:
> http://autos.groups.yahoo.com/group/Rover_net/
More information about the rovernet
mailing list