Paul: You are correct. I am getting sloppy. 1972 is a global date
when a lot of the Federal spec. British cars converted over. The MGB
did not get converted till the Sept 74 update.
I get confused, as my 73 Austin Marina was running ballasted. That's
how I ran across similar symptoms. I installed a 1973 Marina coil in my
1970 MGB. What really messed with my brain was that Bosch point sets
didn't melt down as they had a phenolic lifter block. Only the Lucas
points would have problems with closing gaps. The Bosch points would
just fry in a short time.
> -----Original Message-----
> From: Paul Hunt [mailto:firstname.lastname@example.org]
> Sent: Thursday, July 28, 2005 11:04 AM
> To: Dodd, Kelvin; email@example.com; firstname.lastname@example.org;
> Subject: Re: Strange Ignition Behaviour (was This is scary stuff)
> Should say '74 1/2-' car i.e. a rubber bumper, all of which had 6v
> all chrome bumper cars had 12v coils.
> ----- Original Message -----
> > Very common if someone is working on a pre-72 MGB and can get their
> > hands on later parts car bits. Stuff the coil from a 72- car into
> > early one and it happens every time.