[Diy_efi] RB26 GTR stuff

[Hugh Keir]

Matt,

I am using an Apexi ECU.

I currently have a 1.5mm gap on iridium plugs which I will be changing
tomorrow, might try .8 and see if that clears the problem.

The poor RPM is also playing havoc with my BHP spreadsheet as the BHP is
calculated from changes in RPM which need to be accurate for fuel and
ignition tuning decisions to be made.

The engine appears to run fine, it is the logged RPM trace that is of most
concern. The erratic trace is standard with the Apexi ECU.

Hugh

----- Original Message -----
From: "Matt Porritt" <porrittm at anet.co.nz>
To: "DIY-EFI" <diy_efi at diy-efi.org>
Sent: Friday, January 03, 2003 7:28 AM
Subject: Re: [Diy_efi] RB26 GTR stuff


> I've never had any ignition probs on the RB series of engines at all.
> Run a plug gap of 0.8mm.
> What ecu are you running?
> --
> Matt Porritt
> RC Race Cars and Supplies
> ICQ #22776813
>
>
> On 3/1/03 8:14 PM Hugh Keir wrote
>
> > Mike,
> >
> > You might try posting on http://forums.skylinesdownunder.co.nz/ when
trying
> > to find a head, lots of the Australian guy's post on there. There are
some
> > heads in th UK but it is probably not the cheapest option.
> >
> > I have other links but it will take a while to dig them out.
> >
> > I am doing some work on an RB26 just now trying to get the Ignition
system
> > to work a little better. High boost runs make the RPM seen by the ECU
very
> > unreliable which at its simplest means that the ECU is not supplying the
> > correct map point for ignition and fuel. I recently fitted a B&M New
volt
> > ignition amplifier to the car set at 20 volts and also increased the
plug
> > gap as per the instructions, but the logged RPM signal is now slightly
> > worse.
> >
> > I think it is probably the spark being partially blown out an will try
> > reducing the gap to slightly below standard with the 20 volt amplifier
to
> > see what that does.
> >
> > Any thoughts? especially whether some bigger coils are available from
> > another Nissan engine that are cheaper than the Splitfire option.
>
>
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>


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