ignition coils

spikes · Postby **spikes** » Mon May 07, 2012 1:19 pm

Uploaded with ImageShack.us

J1 – 12v Input
J2-Brown Ignition Signal
J3-Brown Ignition Output
J4-Brown/Yellow Ignition Signal
J5-Brown/Yellow Ignition Output
J6-Ground

manga_blue · Postby **manga_blue** » Mon May 07, 2012 1:27 pm

hks_kansei wrote:It says:
Suitable for single coil systems

Does this mean it won't work on an MX5?

Or even worse, an MX5 would need one fro each coil? (Costing $280)

Oops, hadn't read that bit, so double the price for a 2 coil NA/NB MX5 to $140 for the Jaycar solution.

Also just found later stuff on miataturbo which would probably work out eventually to around the same price when it arrives but would also give you the voltage boost.
http://forum.miata.net/vb/showthread.php?t=457749

noobee · Postby **noobee** » Mon May 07, 2012 2:32 pm

you would need 2,one for each pair of coils,but you would also need the hand controller to initially set it up.
http://www.jaycar.com.au/productView.as ... TID=965#11
Mick

dbr · Postby **dbr** » Tue May 08, 2012 2:56 pm

Thanks guys.
This has been very helpful.

timk · Postby **timk** » Tue May 08, 2012 3:07 pm

Want me to do a run of these dwell reduction boards? It will probably work out around $15 each for the PCB.

I'm interested in a couple for my own use anyway.

noobee · Postby **noobee** » Tue May 08, 2012 4:46 pm

yep,put me down for 1

my brother has one of these at work and a lot of apprentices to teach that he could put on the job.he keeps telling me he'll get some done,but still i've been waiting months.

http://www.youtube.com/watch?v=cSVvbiOP9E4
Mick

manga_blue · Postby **manga_blue** » Tue May 08, 2012 4:48 pm

Yes, I'll take one, sab.

hks_kansei · Postby **hks_kansei** » Tue May 08, 2012 4:57 pm

Same, I'd be up for one.

Assuming it works on a completely stock NB8A and stock ECU (obviously not stock coils)

I presume the Tacho will still work perfectly normal with COPs?
I read somewhere that the Tacho gets it's signal from the stock coils, so going COPs can make the tacho stop working?

timk · Postby **timk** » Tue May 08, 2012 5:14 pm

Tacho gets signal from the ECU (on the NB, anyway). NB8A coils don't have a tach pin like the earlier NA8 ones.

I will get the board printed from the gerber file available from miataturbo.net, so it will be sold unpopulated and as is.

bruce · Postby **bruce** » Tue May 08, 2012 5:38 pm

Everytime I look at a circuit diagram I feel stoopid.

Zcootz · Postby **Zcootz** » Wed May 09, 2012 1:33 am

Awesome Seb! I'll be in for one as well

dbr · Postby **dbr** » Thu May 10, 2012 1:23 pm

Can I have one as well please?

spikes · Postby **spikes** » Thu May 10, 2012 4:25 pm

yes please saboteur!

timk · Postby **timk** » Thu May 10, 2012 5:44 pm

I'm in the process of getting some quotes. I may end up getting them fully populated, I assume this would be preferred?

It would be as per the schematic on miataturbo.net but using a TS914 opamp in place of the LM324.