MG B crankshaft rear seals
Posted: Thu Apr 06, 2000 8:13 am
Hello all,
I have been following this rear seal discussion with interest.
A few drops of oil, or a little puddle, on the floor may not seem like
much of a problem (except to my pride) but over time it can make
an oily mess along the chassis.
Concerning the large diameter seal issue: I would like to point out
that the MG B engine uses such a seal running on the diameter of
the flywheel flange. It must be 4" diameter and B's don't seem to
have a wear problem. I have 180,000 miles on the current rear seal!!!
I will install the "small block chevy" conversion in my XPAG
overhaul.
Cheers,
Bill Traill
Santa Clara, Calif.
I have been following this rear seal discussion with interest.
A few drops of oil, or a little puddle, on the floor may not seem like
much of a problem (except to my pride) but over time it can make
an oily mess along the chassis.
Concerning the large diameter seal issue: I would like to point out
that the MG B engine uses such a seal running on the diameter of
the flywheel flange. It must be 4" diameter and B's don't seem to
have a wear problem. I have 180,000 miles on the current rear seal!!!
I will install the "small block chevy" conversion in my XPAG
overhaul.
Cheers,
Bill Traill
Santa Clara, Calif.
> Andy,
>
> What you are saying is that no seal exists that can withstand the
> friction temperatures generated by the large diameter and therefore
> fast moving circumpherence of the flywheel boss. Probably there is not
> enough oil in the vicinity at those rpms either. My one has settled in
> to a steady rate of leak and I guess that it has just worn enough to
> reduce the friction and therefore reduce the temperature.
>
> What you are also saying is that if I just tootle along in town, the
> Viton one will probably hold out. Little chance of this.
>
> The best interim solution will probably be to replace the original
> stuff for now.
>
> Any other ideas?
>
> Viv
>
>
>
>