Go to http://www.mgb-stuff.org.uk/curvestext.htm and look up your dizzy
by serial #. Hopefully you got one with a curve that will be OK for
your engine. BTW, I use a 25D4 #40897 in my '69 B. Still using points
and a Lucas Sport coil.
Todd Mullins wrote:
> Hi all,
> I've been slowly gathering parts for my '74 MGB reassembly. My emphasis
> is on optimizing functionality and performance, rather than a
> historically correct restoration.
> So I put it to you: Is the points-equipped 45D4 superior to the
> points-equipped 25D4? I know that electronic ignition levels the
> playing field here (and I'll probably buy a Pertronix for the 45D4), but
> I'm interested in your opinions of the intrinsic strengths and
> weaknesses of the two distributors in their original form.
> As always, thanks for all of your informed opinions!