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

[Peter Pless (ferrarilist]

It's not EFI....it's only EI....timing and spark only.

It's a carby car. 

-----Original Message-----
From: LarryT [mailto:l02turner [at] comcast.net] 
Sent: Friday, 17 August 2007 5:27 AM
To: Peter Pless
Cc: 'The FerrariList'
Subject: Re: [Ferrari] 308GT4 (or any) plugs

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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> 5:19 PM
>