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Re: Performance drawbacks

To: mgs@autox.team.net
Subject: Re: Performance drawbacks
From: Eric <eric@erickson.on.net>
Date: Wed, 02 May 2001 23:58:17 +0000
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

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