[V8] Ign Question to the V8 Guru's out there
andyschlueter at 4techwork.com
Sun Apr 15 00:39:50 EDT 2007
When I advanced my cam timing and forgot to plug that in, it deff had a
lumpy idle then smoothed out soon as I connected it. Again, I am about
to tomm disconnect to feel the results. Sounded good though. Hmm...if it
retarded the ignition, that would most deff give more torque.
"What happens when we retard the timing?:
If you RETARD ignition timing down from -30 degrees to -26 degrees, you
start the combustion event later and finish it later by 4 degrees. The
rise in cylinder pressure starts and finishes 4 degrees later.
Everything is shifted to the right along the X-axis of our graph.
So with a delayed spark or "retarding", there is less time for the
expanding force of the combustion to work against the rising piston
(piston has to work less harder) and the peak cylinder pressure occurs
at a better rod to crank angle to help turn the crank and make more
power (i.e within that ideal +12-25 degree ATDC range)."
with advanced cams, chip, this might be kinda nice as long as you do use
91+ octane. Top priority Sunday!
Andrew W. Schlueter
'90 V8 MQuattro MSnS-E
'90 Jetta VR6TT Quattro
'91 200 VR6T Avant project
From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf
Sent: Saturday, April 14, 2007 7:19 PM
To: Scott Phillips; V8 at audifans.com
Subject: Re: [V8] Ign Question to the V8 Guru's out there
With this disconnected, your timing will be retarded
----- Original Message -----
From: "Scott Phillips" <Scottp at ippe.com>
To: <V8 at audifans.com>
Sent: Saturday, April 14, 2007 5:53 PM
Subject: [V8] Ign Question to the V8 Guru's out there
> Subject '90 V8 PT *Chipped*.
> Not that the chip matters here but you might wanna know..
> On the pass dist hall sender.. mine has never been connected (not
> I got the car 8 months ago.. and almost 10K Miles).. The car runs,
> great, starts fine good MPG.. the Question.. is why? Is it a backup? I
> can't connect it cause 2 of the 3 wires are broken (upon inspection)
> until I get the replacement part.. its gonna stay as is.. just wanted
> run it up the flagpole.
> Scott Phillips - Director Information Technology and Information
> International Process Plants
> 17A Marlen Drive * Hamilton, NJ 08691 * USA
> Tel: (609) 586-8004 * Fax: (609) 586-0002 *
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