Email is strange, I just had 20 emails returned to me that I sent over a
week ago..
Anyhow, I got hold of a EMS module for $117 and is supposedly a good
replacement for the Nissan item. Then I find I am having trouble with the
ECU not sending the right signal to the module.. So the ECu is getting
looked at right now..
I shall keep you posted..
Thanks for your suggestion.......
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Derek Franklin
> Sent: Wednesday, 23 August 2000 2:25 PM
> To: [EMAIL PROTECTED]
> Subject: Re: S13 Power Transistor?
>
>
> Don't know about SR20s specifically, but any distributorless
> ignition will have
> a set of power transistors to switch the coils ( usually Field
> Effect Transistors
> ).
> Unless the FETs are in the ECU box, you won't have any spark
> since there's nothing
> operating your coil(s).
> Basically, each coil is switched by the corresponding FET, so if
> you have an
> understanding of power electronics you could actually build a module.
>
> How many wires feed into this transistor box ?
> If it's 5, then you have 1 switching wire per FET plus an earth.
> If 3, then
> it's a 'twinned' 2-coil system which fires twice per cycle, one
> extra spark
> at TDC on exhaust stroke. Either would be a doddle to build with
> the right tools,
> but if there's more wires then there's some feedback to the ECU
> as well - much
> harder to suss out.
>
> $100 worth of parts for the 5-wire, including a box and
> connectors. How much
> for a genuine item ?
>
> Hmm...that'll do for now - I guess when you spend some thousands
> on a motor
> a $200+ ignition module is pretty reasonable.
>
> DF
>
>
> >Does the S13 SR20 have the same setup as the S14 as far as having a power
> >transistor wired in before the 4 coils? Is it the same system,
> and does it
>
> >look the same... Coz I'm buggered if I can find one on my engine, and I
> >don't want to try starting the engine without it or I'll have a hell of a
> >time won't I?
>
>
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