LSx coil thread
#41
Cpt. Slow
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Just got my new DIY-clips in yesterday. New one on top, old one on bottom.
![Name: A180A10A-0C90-492B-BBFA-4A635D91F2C5_zpsecrqfixm.jpg
Views: 9645
Size: 1.36 MB](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/184445d1501207867-lsx-coil-thread-a180a10a-0c90-492b-bbfa-4a635d91f2c5_zpsecrqfixm.jpg)
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.
![Name: A180A10A-0C90-492B-BBFA-4A635D91F2C5_zpsecrqfixm.jpg
Views: 9645
Size: 1.36 MB](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/184445d1501207867-lsx-coil-thread-a180a10a-0c90-492b-bbfa-4a635d91f2c5_zpsecrqfixm.jpg)
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.
#46
Cpt. Slow
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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.
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.
#47
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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/attachments/diy-turbo-discussion-14/133076-lsx-coil-thread-15885890784_6f3e00e33b_c.jpg?dateline=1423732377)
Can you think of why they would do this? Seems dodgy!
Has anyone seen this before?
Cheers
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/attachments/diy-turbo-discussion-14/133076-lsx-coil-thread-15885890784_6f3e00e33b_c.jpg?dateline=1423732377)
Can you think of why they would do this? Seems dodgy!
Has anyone seen this before?
Cheers
#48
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I took some more pics in better light:
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/133138-lsx-coil-thread-16512111141_647ab918eb_c.jpg?dateline=1423784607)
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/133139-lsx-coil-thread-16327932247_c7cc48b4e3_c.jpg?dateline=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
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/133138-lsx-coil-thread-16512111141_647ab918eb_c.jpg?dateline=1423784607)
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/133139-lsx-coil-thread-16327932247_c7cc48b4e3_c.jpg?dateline=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
#49
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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/attachments/diy-turbo-discussion-14/133404-lsx-coil-thread-16366800180_13d6429b70_c.jpg?dateline=1424133740)
I'll be working on the harness next.
Cheers
I just did a test fit of my D510C coils on the FM bracket:
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/133404-lsx-coil-thread-16366800180_13d6429b70_c.jpg?dateline=1424133740)
I'll be working on the harness next.
Cheers
#50
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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/attachments/diy-turbo-discussion-14/133438-lsx-coil-thread-ls2_coil_schematic.gif?dateline=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/attachments/diy-turbo-discussion-14/133437-lsx-coil-thread-msmwastedsparkls2wiring_zpsl5eyljkl.jpeg?dateline=1424171967)
- hope it helps but PLEASE let me know if I've F U C K E D it up.
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/133438-lsx-coil-thread-ls2_coil_schematic.gif?dateline=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/attachments/diy-turbo-discussion-14/133437-lsx-coil-thread-msmwastedsparkls2wiring_zpsl5eyljkl.jpeg?dateline=1424171967)
- hope it helps but PLEASE let me know if I've F U C K E D it up.
Last edited by Lokiel; 02-17-2015 at 06:35 AM.
#52
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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/attachments/diy-turbo-discussion-14/134284-lsx-coil-thread-16474837958_a53776d692_c.jpg?dateline=1425045711)
I used two 25v 4700uF 105c capacitors.
![](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/134284-lsx-coil-thread-16474837958_a53776d692_c.jpg?dateline=1425045711)
I used two 25v 4700uF 105c capacitors.
#59
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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.
The hood/bonnet curves downwards too so there's more clearance at the rear than the front.
#60
Cpt. Slow
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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.
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.