Ls2 Coil On Plug Mod

[etang789]

I have heard about Yaris coils, Scott @ Insight actually mentioned them at the same time as the R8 ones and they are a consideration but I'm leaning towards the R8 coils because NGK do a replacement and they have a shop at Homebush

I see more and more people using R8 Coils in RB26 . But I still have yet to see some test against each other in spark power.

[XKLABA]

I see more and more people using R8 Coils in RB26 . But I still have yet to see some test against each other in spark power.

I have seen a vid of a guy that tested the R8 coils and they made 45kv, not sure how that compares but it sounds like alot

I have googled heaps and yet to find anyone actually using them on a 26

But then I googled heaps about the LS2 truck coils and didn't find any bad posts till after I lost an engine

[omnigear]

thats not really saying anything compared to the ls1 coils that had a comprehensive test.

I have seen a vid of a guy that tested the R8 coils and they made 45kv, not sure how that compares but it sounds like alot

I have googled heaps and yet to find anyone actually using them on a 26

But then I googled heaps about the LS2 truck coils and didn't find any bad posts till after I lost an engine

[etang789]

On 4/26/2016 at 7:18 AM, XKLABA said:

I have seen a vid of a guy that tested the R8 coils and they made 45kv, not sure how that compares but it sounds like alot

I have googled heaps and yet to find anyone actually using them on a 26

But then I googled heaps about the LS2 truck coils and didn't find any bad posts till after I lost an engine

May be it is a Canadian thing quite a few members on http://forums.gtrcanada.com/ uses them, and they purchase their wiring kit from https://www.facebook.com/simonpierre.foucault

The 300ZX guys are using them too http://www.aus300zx.com/forum/showthread.php?t=332677

Edited August 25, 2016 by etang789

[GarettH]

I built my own wiring harness and a bracket so my ls6 coils fit under the oem cover. 622whp @19 and not a single issue.

[Borci88]

Heres my LS2 coils sitting in a NEO head. Simple brackets, parts of the webbing across the head had to be drilled down. Doesn't have to look amazing because the cover fit's over the top! 

Wiring Specialties in the USA do a plug in harness for LS2 coils to suit different model skylines for around $150, mad not to use one!

 

[Looney_Head]

What springs are you using when going directly onto the plug?

[JH32]

4 hours ago, Looney_Head said:

What springs are you using when going directly onto the plug?

I just pulled the springs out of the stock coils and stretched them out a bit

[omnigear]

10 hours ago, Looney_Head said:

What springs are you using when going directly onto the plug?

Mine is just raw , coil to plug.

[Borci88]

20 hours ago, JH32 said:

I just pulled the springs out of the stock coils and stretched them out a bit

^ This. Debating whether or not to get MSD boots of some sort, but gonna see how the stock boots and springs go.

[DCIEVE]

Has anyone considered r35 gtr coils, appears to be what's in the Godzilla kit...

[etang789]

found another variation of the VAG Coils done by Ignition Projects , its basically Porsche Cayenne Turbo coils . Don't know how these Cayenne Turbo Coils vs R8 Coils vs LS2 Coils in firing power. It would be nice if someone can do some extensive testing on these. Seems like the biggest advantage using the LS2 Coils is sits much lower than the VAG Coils. 

More info on the Cayenne Turbo Coil over plug setup here, http://www.speedhunters.com/2014/10/a-spark-of-efficiency-project-gtr/

 

Edited September 18, 2016 by etang789

[MrStabby]

Some Quite Interesting, but unverified, tidbits;

This ebay add says;

Nissan OEM coil : 22 KV
Split fire Coil: 24KV
LS1 Coil : 30Kv
LS2 Coil : 34Kv
LS2 TRUCK (with alloy heat sink): 42kv, twice the firing power, GUARANTEE NO MISS FIRE 32PSI (2.2 BAR) @ 1.1MM GAP

And this post on performanceforums says;

so coil energy at max safe dwell before saturation begins is:
Yaris @ 2ms/6A 78mj
Toyota @ 3ms/6A 117mj
D585 @ 8 amp dwell (UNSAFE) 256mj
D585 @ 6 amp dwell (SAFE-ISH) 144mj

[KiwiRS4T]

These coils are 40Kv (full specs inside)

http://www.aemelectronics.com/?q=products/ignition-components/high-performance-coils/high-output-igbt-inductive-smart-coil

[fikemoo]

I just got the aem smart coils for my rb. They have been well proven to stupid high power and boost. Nearest thing to cdi ignition without needing a cdi unit. And for around £50 a coil you can't complain

http://cloud.tapatalk.com/s/585aeba725647/20161028_170501.jpg?

[Borci88]

So we trialled my LS2 Truck Coils. Setup is stock coil boots and springs onto the end of the LS2 truck coils. Misfired at 17psi with a 1.1mm spark plug gap, put 0.8's in and it fixed it.

Need to spend some time looking into it, maybe needs a direct power feed, maybe needs better boots and MSD coil springs of some sort.

[MrStabby]

On 12/23/2016 at 9:45 PM, Borci88 said:

So we trialled my LS2 Truck Coils. Setup is stock coil boots and springs onto the end of the LS2 truck coils. Misfired at 17psi with a 1.1mm spark plug gap, put 0.8's in and it fixed it.

Need to spend some time looking into it, maybe needs a direct power feed, maybe needs better boots and MSD coil springs of some sort.

How did you set the dwell? Or did you leave it stock?

FWIW the coil power feed on the RB26 appears to be a dedicated, relay driven circuit. I'm hoping its ok to re-use when i do mine.

[Borci88]

On 12/26/2016 at 9:35 PM, MrStabby said:

How did you set the dwell? Or did you leave it stock?

FWIW the coil power feed on the RB26 appears to be a dedicated, relay driven circuit. I'm hoping its ok to re-use when i do mine.

Found the equation to change it into crank degrees for the PFC. I changed them all to suit 3.5ms at each RPM interval. Wasn't good enough and even 4ms was still causing a misfire coming onto boost.

[WMDC35]

12 hours ago, Borci88 said:

Found the equation to change it into crank degrees for the PFC. I changed them all to suit 3.5ms at each RPM interval. Wasn't good enough and even 4ms was still causing a misfire coming onto boost.

Have you got a good earth/ground?

[MrStabby]

9 hours ago, WMDC35 said:

Have you got a good earth/ground?

Yep, and check that you have the full ~14.5V (alternator charging) at the coils when you're hitting boost. IIRC another SAU'er had an alternator who's output was trailing off higher in the RPM band, so you'll want to log it, even if only at the ECU (cause logging at the coils probably wont be so easy).