You could also try retarding the timing a bit. Maybe only for street use,
and advancing it again on race weekends. It's easy enough to try, anyway...
on 5/2/01 4:58 PM, Eric at eric@erickson.on.net wrote:
> 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
>
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the red one with the silver bootlid.
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