Martin Frankford wrote:
>
> On Wed, 2 May 2001, Eric wrote:
>
> > A simple question or two ;-)
> >
> > Is it damn inevitable that flat-top pistons and a ported/polished
> > head will lead to run-on (dieseling)?
> >
>
> High compression causes preignition. Was your head shaved or your deck
> blocked?
Nahhh, no stroking, shaving or anything. Overbored just 40 thou and big
valves. For any fellow sprinters out there... still just a standard
engine :-) High compression pistons? I think I gained some additional
compression out of the thing and, oh yeah, I keep forgetting things...
just a fast-street cam.
She doesn't run real smooth but idles OK (lumpy, of course but OK).
As I said, high octane fuel stops most of these problems - as does
learning to push in the clutch when I turn off the key which kills the
pre-ignition usually.
Oh well... I can live with it all as it just takes a bit of getting used
to.
Eric
'68MGB MkII
Adelaide, South Australia
///
/// mgs@autox.team.net mailing list
/// (If they are dupes, this trailer may also catch them.)
|