Just got my new DIY-clips in yesterday. New one on top, old one on bottom.

Attachment 184445

Excuse my dirty, cut up hands.

You can see the tongue I'm talking about that's missing from the lower pin. It's not that folded piece, cause that's completely flat on all 16 pins, and about half the length as the tongue on the other pins. These were also for a D580 coil, so they won't fit my D514a coils, I'll just have to reuse the clip bodies with the new metal pins. They're very firm on the coil's pin when pushed on.

Sweet. Thanks for trying them out Curly! +1.

I'll have to order up a set of pigtails for my coil-setup for peace of mind.

Just make sure to get the right clips, these only work for me because I have the bodies of the old clips.

So now we know the D580 LS1/LS6 coil uses a different plug, I wonder if all the others are the same? I'll be able to see if a 585 plug fits on the 510 when my stuff arrives.

Received my D585 pigtails today, now just waiting for the coils:

https://www.miataturbo.net/attachmen...ine=1423481975

So I received my used wiring harness from ebay a few days ago, and finally got a chance to wire them up.

First off, it appears GM uses sequential ignition from the factory, as all 8 signal wires have a different color.

Secondly, they use hockey tape to wrap their harness and that is incredibly frustrating.

However, they slid in very smoothly and clipped in confidently. They also fired my plugs in test mode from 800-14000 rpms. With the ebay pigtails, I could wiggle the plugs and they'd intermittently shut off. These ones didn't do this once. I'm incredibly happy.

If anyone's interested in the D580 wiring kit I purchased, let me know.

I can now confirm the D585 plug fits the D510C coil fine.

Th weird thing is I bought 4 new coils from a US supplier and they were advertised as genuine ACDelco. It looks like they have scratched the ACDelco branding off:

https://www.miataturbo.net/attachmen...ine=1423732377

Can you think of why they would do this? Seems dodgy!

Has anyone seen this before?

Cheers

I took some more pics in better light:

https://www.miataturbo.net/attachmen...ine=1423784607

https://www.miataturbo.net/attachmen...ine=1423784607

The quality of the plastics seem decent, the molding of the electrical connector is high quality and the resin on the back looks normal.

It's a bit hard to tell from the first picture alone but it definitely used to say ACDelco on there.

The second pic shows it seems to have the correct code (H6T55272ZC) to be a Mitsubishi made ACDelco unit?

It just seems so bizarre!

Cheers

I'm going to go ahead and use these coils. I've bought some "OE equivalent" BMW parts before (thermostats, control arms etc) and they look exactly like the original part but have the BMW logo ground off, it may be a similar deal.

I just did a test fit of my D510C coils on the FM bracket:

https://www.miataturbo.net/attachmen...ine=1424133740

I'll be working on the harness next.

Cheers

The original LS1 diagram posted in this thread should have been followed by a LS2 diagram - this is important since the tab is on the opposite side (ie. the pins are reversed between the LS1 and LS2).
https://www.miataturbo.net/attachmen...ine=1424172796

Here's the Wasted Spark MSM wiring diagram I whipped up last night (does not include the 1.0uF capacitors) since I'm hoping to install my D514As on the weekend:
https://www.miataturbo.net/attachmen...ine=1424171967
- hope it helps but PLEASE let me know if I've F U C K E D it up.

Looks good to me.

I can't edit the first post but I agree that the LS2 schematic should be added.

Cheers

Since I'm going all out with coils I figured I may as well give them decent power, so I went with JasonC's capacitor recommendation. They fit nicely into the nooks between the coils at the bottom of the FM bracket:

https://www.miataturbo.net/attachmen...ine=1425045711

I used two 25v 4700uF 105c capacitors.

Could you do a consolidated writeup on your coil setup, so that all the information that is relevant to it is in one single post :D :D :D

Are the capacitors really necessary?

I am running without them and don't seem to have any problems.

Seems like that mounting spot was made for the capacitors.

Suggested improvement: You've clad them in black heatshrink to pad them a bit from the zip-ties - this will make it harder to determine when they're dying (ie. you wont be able to see them blistering). Clear heatshrink!

Oh lala.

https://www.miataturbo.net/attachmen...ine=1425081920

Finally pics of the elusive Singular mount! It looks very similar to what I'm planning on putting together. Congrats!

Curly does that clear the hood?

I have mine in front of the head and the wires barely clear the hood... So I am having a hard time imagining that clearing...

If it does. Sweet!

I originally had the D585 coils and needed to mount them "curly-style" due to my 3-point strut brace being "in the way". The mountings tabs on the D585s make them taller than the D514As and they were too close for comfort in touching the hood/bonnet so I bought the D514As which will provide more clearance.

The hood/bonnet curves downwards too so there's more clearance at the rear than the front.

It should clear the hood, yes. I have three sets, one for me, one for Ed's VVT, and one for Blaen99's VVT. I'm not sure if Singular is planning on making more or not, it's a bit of a niche market for these.

They'll also fit 1.6, NA 1.8, 99-00, VVT, and MSM valve covers. Who knows about any ford/capri covers.

I'll have more clear pictures and of more valve covers soon, I'm on 12 hour shift 3 of 3 since I've gotten them, barely had time to throw them on Ed's new head before bringing it to the machine shop.