Ferrari Mailing List: Re: Carb 308 ignition timing

[Rick Lindsay (rolindsay]

Our Friend Peter Henrys there in Melbourne also has a
308GT4 of similar age.  Perhaps you could make some
similar measurements with Peter?

rick
--- Peter Pless <ferrarilist [at] pless.com.au> wrote:

> Thanks Rick.
> 
> All the anti-pollution gear is removed. It was just
> a point of reference. So
> it doesn't seem to MIND the 12deg....and if it's not
> uncommon, then I'm
> worrying about nothing.
> 
> Peter 
> 
> -----Original Message-----
> From: Rick Lindsay [mailto:rolindsay [at] yahoo.com] 
> Sent: Monday, 9 July 2007 10:55 AM
> To: Peter Pless
> Cc: 'The FerrariList'
> Subject: Re: [Ferrari] Carb 308 ignition timing
> 
>    Peter, my MGB is timed at 10 degrees BTDC at
> 600rpm idle and can advance
> as much as 20 degrees under operating conditions.
>    In your line, "they've set it up at 12deg BTDC. I
> know usually it's 5deg
> or so, and the aussie spec pollution requirement is
> actually 1-2deg ATDC."
> is interesting.  My MG idles at 10 degrees BTDC with
> the vacuum advance
> operating so that much advance is not uncommon. 
> HOWEVER, the retarded spark
> may be a little 'greener'.  I'm guessing here but
> what other reason might
> there be for, "...and the aussie spec pollution
> requirement is actually
> 1-2deg ATDC."  If you have to pass an emissions test
> you may have to retard
> the spark to pass then reset it to operating
> condition. 
> Here in Houston we have all kinds of emissions tests
> BUT there are no tests
> for antiques - defined as 25 years and older.
>    Good luck.
> 
> rick
> 
>
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