Thanks Larry,
I had no idea that there were son many advancer types.
So I have learned two things.
Rene
"Unger, Larry G" wrote:
> Rene van Maanen wrote:
>
> > Does someone know what the number of degrees is that the
> > vacuum advancer creates for the ignition?
> >
> > It's a 25d4 advancer distributer on a 68 B.
>
> Rene,
>
> Here is info that Kelvin posted awhile back ...
>
> > MGB Dist# Vac.# Vac.Adv. Type
> >
> > 18GF 40897 54411230 5.13.10 ported
> > 65-67 41288 54411985 5.13.10
> > 67 41290 54412170 5.11.7
> > 68 41288 54411985 5.13.10
> > 69 41264 54415625
> > 70 41288 54411985 5.13.10
> >
> > 71 18GK 41339 54414868 7.13.5 manifold
> > 72 18V 41370 54423989 7.13.3
> > 73-74 41491 54425359 10.15.5
> > 75 41599 54425516 10.15.5
> >
> > Note the change in advance characteristics in 1971.
> > The later units come in at a higher vacuum and gives
> > less advance.
> >
> > 10.15.5 = Movement starts at 10 ins of Mercury
> > Movement stops at 15 ins of Mercury
> > 5 distributor degrees advance at maximum movement
> >
>
> Hope this helps ...
>
> **********************************************************
> Safety Fast! ... larry.g.unger@lmco.com
> '61 MGA 1600 MkII
--
Rene and Marion van Maanen
Netherlands Europe
SOHC/4 sohc4@dorje.com Honda CB350F ['74] member #252
Honda CB750K2 ['75]
http://members.tripod.com/renevm/cb750k2/index_restoration.html
http://members.tripod.com/renevm/cb350
MG list mgs@autox.team.net MGB GT ['68]
http://members.tripod.com/renevm/mg/index.html ring #119
|