Larry,
Was yor block/head skimmed? Otherwise the greater combustion chamber volume
will have lowered your compression ratio thus reducing the tendency to ping
and/or diesel
Andy
>From: "Larry Miller" <millerls@ado13.com>
>Reply-To: "Larry Miller" <millerls@ado13.com>
>To: "Toby Atwater" <tob@taltec.net>, "Sprite Mailing List"
><spridgets@autox.team.net>
>Subject: Re: speaking of fuel....
>Date: Mon, 10 May 1999 07:58:32 -0700
>
>I've run my rebuilt 948 (1098 head with hardened seats) on all grades and
>can't tell the difference. No pings or dieseling.
>
>Larry Miller
>----- Original Message -----
>From: Toby Atwater <tob@taltec.net>
>To: Sprite Mailing List <spridgets@autox.team.net>
>Sent: 09 May, 1999 8:14 PM
>Subject: speaking of fuel....
>
>
> > quick question....
> >
> > I just realized, I have no idea what these cars run on.... I bought 3
> > gallons of 97 "supreme" octane petrol, but I have no clue if that is
> > necessary. What spridegts were designed to run leaded fuel? any? all? as
>I
> > understand it... the A series engine runs about 8.5 :1 compression, what
> > octane should I run to prevent detonation?
> >
> > I could always just experiment and try 87 octane and see if it
> > pings/pinks/detonates/knocks ...
> >
> > As always, thanks for your help...
> >
> > Toby
> > Toby Atwater, Santa Barbara, CA, tob@taltec.net
> > 1969 Austin Healey Sprite, mk 4 ?? octane
> > 1971 FJ-40 Toyota Land Cruiser designed to run off sugar cane alcohol.
>(back
> > in the day)
> >
> >
>
>
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