Factory they have a thearded plug that takes a allen key.
Malcolm
Peter and Trace wrote:
>
> 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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