Bob
The fact that the coil is a 12 volt may affect starting but nothing else,
although having said that, my 2500S is similarily equippped and it has no
problem getting going. The 6 volt coils employ the ballast resistor to drop
the 12 volt input to 6 volts during normal running, the coil only receives
the full 12 volts during starting, when the ballast resistor is bypassed. If
you have a 12 volt coil AND a ballast resistor, then normal running will be
adversely affected.
My thoughts are that the carbs have not been adjusted to suit the cam
profile. You don't mention what carburettors are installed, what condition
they are in and what needles are installed in the carbs. You may also need
to look at the ignition advance as well.
David Greed
1974 Stag Man O/D
1979 2500S Man O/D
Email: Home: greed@wave.co.nz
Work: david.greed@telecom.co.nz
Webpages: http://www.wave.co.nz/pages/greed
.
----- Original Message -----
From: "Bob Kramer" <rgk@flash.net>
To: "TR List" <triumphs@autox.team.net>
Sent: Thursday, 7 December 2000 2:12 PM
Subject: 6 volt coils in Saloons
>
> Esteemed lovers of all things Triumph,
>
> I have been chasing the various ills in my 2.5 PI Saloon, not the least of
> which is a poor running condition over 3000 rpm, and a problem getting the
> thing to start in the first place. It takes an extraordinary long time to
> fire, then runs OK up to 3000 rpm. Just don't try gunning it up a steep
> hill! I was troubleshooting the ignition system and came across something
in
> the manual that I'd missed. All the various models call for a 6 volt coil
in
> conjunction with the in-wire ballast resistor. The car has a 12 volt
Lucas
> coil. What connection does this have to the running problems? FWIW, this
car
> has been modified to 2500TC specs with a 150HP PI cam.
>
> Bob Kramer
> TR4, TR4A, TR6, 2.5 Saloon
> rgk@flash.net
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