Ferrari Mailing List: Re: 308GT4 (or any) plugs

[LarryT (l02turner]

I don't know if this is possible with your EFI, but the EFI I just installed 
in my 911 allows a laptop to plug in and make changes, see it run, etc, 
Very interesting - with a narrow band O2  I can tell if running rich or lean 
at various rpm's and KPa's - a grid of 8x8 allows many changes.  A companion 
program reads the data produced while driving and analyzes it and then 
provides a recommended VE table.  Of course, along with the VE Table 
(Volumetric Efficiency) a wide range of datapoints can be manipulated - cold 
start, warmup, decel, all at various eng temps.

I assume Bosch makes your ECU - do they ever allow computer access to the 
ECU to us lowlife non F1 team managers?

Thx -

Larry T (67 MGB, 74 911, 78 240D, 91 300D)
www.youroil.net for Oil Analysis and Weber Parts
Test Results http://members.rennlist.com/oil
PORSCHE POSTERS!  youroil.net
Weber Carb Info http://members.rennlist.com/webercarbs
.

----- Original Message ----- 
From: "Peter Pless" <ferrarilist [at] pless.com.au>
To: "Larry Turner" <l02turner [at] comcast.net>
Cc: "'The FerrariList'" <ferrari [at] ferrarilist.com>
Sent: Wednesday, August 15, 2007 9:51 PM
Subject: Re: [Ferrari] 308GT4 (or any) plugs


> The car runs great all the way through to 6000rpm. Still running it in, so
> haven't taken it further.
>
> That doesn't make it right, of course. They run great with all sorts of
> igintion and mixture settings. It's making it run at its best that I'm
> after! :)
>
> -----Original Message-----
> From: Rick Lindsay [mailto:rolindsay [at] yahoo.com]
> Sent: Wednesday, 15 August 2007 11:54 PM
> To: Peter Pless
> Cc: The FerrariList
> Subject: [Ferrari] 308GT4 (or any) plugs
>
> Indeed!  I didn't take the necessary care to ask if the car was Euro or US
> spec and I'm certainly no wizz on GT4s but I do have a carbed, Euro GTB. 
> It
> has TWO ignitions and eight carb chokes!  Yeeehaaa!  Lots of places for
> things to go wrong - and right!
>
> If one bank is different, ignition is implied.  If one cylinder is 
> different
> or two sharing a DCNF, carburation/mixture is implied.  I've even found an
> incorrect spark plug in a correct box before! Occum's razor says check the
> simple stuff first.  e.g.
> mal-adjusted carb rather than a worn cam lobe.
>
> Another important question is: How does it run?
> Strong throughout the range?  Any chance of a high rev miss?  Something 
> that
> feels like a rev-limiter?  That is a classic indication of an ignition
> running out of steam - so to speak.
> --- Doug and Terri Anderson <dnt [at] dock.net> wrote:
>
> > Rick asks "Quick question: Do all of the plugs look similar or is one
> > bank different; or one plug different?"
> >
> > GOOD point Rick - for all intents and purposes, the
> > gt4 engine is really two
> > 4 cylinder engines held together by a common crankshaft and cylinder
> > block.
> >
> > DOUG
>
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