My apologies as the drive shaft in the dist' was shortened not lengthened.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Jim Jones
Sent: Wednesday, 26 April 2000 10:08
To: [EMAIL PROTECTED]
Subject: RE: Ignition timing
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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