[s-cars] Bypass valve thoughts. . .? Random Materials thoughts

[bob.rossato at att.net]

There was a plastic engine that ran in the IMSA GTP/GTO/GTU (can't remember
which) series back in the late '80s(?) timeframe.  It was only one year and
probably only a few events.  I remember it was entered in the Lime Rock IMSA
event but I didn't hear too much about it after that.

Bob

> I remember reading some years ago a story about a motor that was made
> out of a plastic that had metal sleeves in it. Maybe it was a ceramic
> block with steel sleeves....
>
> Anybody else remember this? I think it was in popular science.
>
> Chris
> --- Trevor Frank <tfrank at symyx.com> wrote:
> >
> > I always thought that aluminum was a bad choice for a cylinder head
> > and
> > cylinder case/cylinder bores.  Because of it's high thermal
> > conductivity
> > the efficiency of the motor is very limited, it's high thermal
> > expansion
> > can play havoc also.  Cast iron or better yet ceramic's seem to be a
> > better choice.  Coating an aluminum head with ceramics as long as you
> > have a cast iron block may be a second choice, I have and I know
> > others
> > on the list have experimented with this on head's and piston's even
> > exhaust ports.  I remember years ago some company was selling a
> > nearly
> > all ceramic motor, in passing I wonder what ever happened to the move
> > to
> > more ceramic parts in motors.
> >