Left four plugs in?
Jim
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Peter and
Trace
Sent: Thursday, 27 April 2000 21:05
To: [EMAIL PROTECTED]
Subject: Re: Ignition timing
So, your running 4 plugs OK? How did you block the holes?
Pete.
----------
> From: Jim Jones <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Subject: RE: Ignition timing
> Date: Wednesday, 26 April 2000 10:07
>
> Pete
>
> I had a similar problem when we built my Z18T when we went to install the
> Motec Unit. We went the other way and used a FJ distributor to replace
the
> 8 plug. Essentially we had Dimoff Engineering ( WA ) lengthen the shaft
to
> suit and to date has worked perfectly. My motor runs 6:1 compression and
> 25 - 32 PSI eight injectors etc. and as such the advance maps may not be
as
> appropriate.
>
> The reason for us taking this tact was that we needed to somehow retain
the
> ignition disc inside the Dist' Cap as their was no way in hell we could
have
> configured it to suit the Z18 cap.
>
> My car is on the dyno again and if you still would like the maps I can
get
> them to you.
>
> Jim
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Pete & Kath
> Liebig
> Sent: Tuesday, 25 April 2000 21:03
> To: [EMAIL PROTECTED]
> Subject: RE: Ignition timing
>
>
> Pete,
>
> I like your idea about using a PIC to make your own ign. Unfortunately I
> have pretty much gone from carbs to factory EFI, so I don't have a lot of
> experience in this area.
>
> I'm not even sure of the max advance. Sorry I'm not much use! Someone
from
> the list running programmable EFI on a Z18 should be able to help you
with
> some figures to get you started. Guys???
>
> If you get no replies on this please email me privately - I know a guy
with
> an EMS or Wolf (can't remember which) on a Z18. I may be able to get some
> figures from him, although his is starting to approach the "heavily
> modified" category now.
>
> 'later
> PL
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]] On Behalf Of Peter and
Trace
> Sent: Monday, 24 April 2000 20:02
> To: [EMAIL PROTECTED]
> Subject: Re: Ignition timing
>
> Pete,
> You say that the figures in the table are not values in Deg BTDC. What
is
> the maximum advance angle be? I have a Z18ET with a poor dizzy with no
vac
> advance and 8 spark plugs. I want to ditch this setup in favour of
'crank
> fired distributorless programmable home made ignition system' using a
PIC
> microprocessor. I think I will still have to run 8 plugs though ( I dont
> want to ).
> Any help, advice, experience in this area??
> Regards,
> Pete.
>
> ----------
> > From: Pete & Kath Liebig <[EMAIL PROTECTED]>
> > To: [EMAIL PROTECTED]
> > Subject: RE: Ignition timing
> > Date: Friday, 14 April 2000 12:43
> >
> > Pete,
> >
> > As you would already know, there is no "ideal" curve. You gotta get the
> > right curve sorted out for your particular engine, given the boost,
> > intercooling, fuel type and how close to the edge you want to take it.
> >
> > The basic starting point though, is that you can run a fair bit of
> advance
> > at low rpm - this is then progressively backed off as you approach the
> peak
> > torque figure (3650 - 4000rpm in the case of the SR20DET). After this
it
> > begins to advance again.
> >
> > Naturally more advance is run at low load and is then backed off as
load
> > increases.
> >
> > I have maps for the standard ECU and some for a "tuned" ECU. The
standard
> > ones run heaps less advance - obviously for safety reasons. The "tuned"
> maps
> > make the engine go heaps harder - but you only need a very hot day or
> > slightly dodgy fuel and the dreaded detonation rears it's ugly head.
> >
> > Interestingly, the "tuned" maps run on an engine that is using standard
> > boost. It seems there are good gains to be had by running less boost
and
> > very aggressive ignition timing. This particular engine feels very
strong
> to
> > drive, and doesn't suffer from the peakiness of an SR running standard
> > ignition timing and increased (14psi) boost (my car).
> >
> > You really need to have it setup properly on a dyno by someone who
deals
> > with turbos on a regular basis. You can setup curves on NA engines
> > reasonably well yourself, but turbos are another story...
> >
> > I'll send you some info privately - too big for list.
> >
> > 'later
> > PL
> >
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]] On Behalf Of Peter and
> Trace
> > Sent: Thursday, 13 April 2000 17:49
> > To: Ozdat
> > Subject: Ignition timing
> >
> > Hi everyone,
> > I am trying to get some information on the ideal/practical ignition
> curve
> > for a turbo engine. Any help appreciated.
> > Pete.
> >
> >
>
>
>
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