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Wasted Spark Ingnition

BADR33

By BADR33,
in Tutorials / DIY / FAQ

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hefer81 Collaborator

hefer81

Posted
Posted

gday mate i have used the skyline ignitor pack only problem i can see at the moment is the connectors which go into the coil packs, if they wiggle loose then i could have a problem whilst driving, they are a male plug into the female coilpack i will fix it though

  • 3 weeks later...
BADR33 Collaborator

BADR33

Posted
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Posted

if you want to make sure that the termanals wont fall off use some solder.. i didnt use female conectors. i just solderd it and then put heat shrink over it.

there is a couple of otherways to do it that i just thought of.. when i do my mates one i might try them out.. but i got a new soldering iron that is way better then my old one so ill probly just solder it...

good to see a few people out there trying it.

  • 2 weeks later...
Oosh Veteran

Oosh

Posted
Posted
Or if you wanna do it even cheaper, buy my falcon au coil (including leads) $50

Buy an rb25/rb20 ignitor for $20-50

That's 100$

If you can find one that cheap you're doing better than me, Nissan want ~$1000 new, wreckers are about $200-300, and privately their $100-$200.

However, this did get me thinking, if it's wasted spark you'd only need 3 channels of the ignitor too, and since only one of mine (cyl #3) crapped out you could probably mod it up to work. If i get the inclination i might just give it a burl.

  • 2 weeks later...
WogsRus Veteran

WogsRus

Posted
Posted

Hay guys, sorry to bring up an OLD thred.

I went to have a looksee today, and the Coil Pack you need is

TRIDON TICO32 for a VN Commodore. retail $75.

I have a series two so i am going to have a look if i can get mine to work with the VT/VX Leads with ignitors inbuilt.

If not you will need a Series 1 ignitor pack and a new plug if you want to keep the old system functional.

Has anyone had any luck with running the VX.VT ignitor pack???

MANWHORE Grand Master

MANWHORE

Posted
Posted

I once had a list of nissan engines that used those ignitors. They're only expensive because they're 'skyline parts'.

I picked up a couple before for $15-20, but i've since sold them.

I can't quite remember because i've got a bad memoery, but i believe the rb30 ones are the same? Don't quote me on it though. If that is the case, every vl/r31 at your local wreckers will ahve one.

  • 2 weeks later...
AndrewD Contributor

AndrewD

Posted
Posted
I once had a list of nissan engines that used those ignitors. They're only expensive because they're 'skyline parts'.

I picked up a couple before for $15-20, but i've since sold them.

I can't quite remember because i've got a bad memoery, but i believe the rb30 ones are the same? Don't quote me on it though. If that is the case, every vl/r31 at your local wreckers will ahve one.

I couldnt actually be bothered to read the thread, but heres my 2 cents;

-Wasted spark ignition was originally for engines without sync sensors (ie engines that didnt know which of the 4 strokes they were on)

-Those engines also had batched injection for this reason. Leading to poor fuel economy

-There are no economy benefits as far as fuel is concerned, accept your your hip pocket on replacement parts

-And as far as improving efficiency by burning the unburnt fuel on the exhaust stroke, thats a crock of shit. Even with a stratefied charge engine the spark plug is the initial ignition point (prevailing preignition doesnt occur) and at the time of 2nd spark the only gas surrounding the plug is burnt (assuming spehrical flame production). Not to mention that at the time of ignition the gases are being forced out into the exhaust manifold or intake given a significant overlap and high emap.

-Which brings me to my next point, often this ignition leads to intake manifold explosion as the flame now travels back up past the intake valves.

So in conclusion, while it may present you with savings over coils etc its not the greatest of solutions for an engine, especially one with a sync sensor. Just dumb if you ask me.

MANWHORE Grand Master

MANWHORE

Posted
Posted

Interesting thought andrew.

I was under the impression that once the 'wasted spark' actually fired, there was nothing much left in the cylinder, and as such, the spark is just 'wasted'?

Therefore, if that is the case, apart from just 'wasting' the spark, there shouldn't be any adverse effects?

The main reason why this mod is done, is not for any of the benefits you mentioned above, it's due to the fact that it is very cheap, doesn't suffer any adverse effects, and it allows easy change of plugs, and it keepts the coils away from the heat.

AndrewD Contributor

AndrewD

Posted
Posted
Interesting thought andrew.

I was under the impression that once the 'wasted spark' actually fired, there was nothing much left in the cylinder, and as such, the spark is just 'wasted'?

Therefore, if that is the case, apart from just 'wasting' the spark, there shouldn't be any adverse effects?

The main reason why this mod is done, is not for any of the benefits you mentioned above, it's due to the fact that it is very cheap, doesn't suffer any adverse effects, and it allows easy change of plugs, and it keepts the coils away from the heat.

Well yeah, the cost savings would make it reasonable.

But i would hazard a guess that the nissan designed coils are substandard if they cant take the heat.

Although i consider most motorcycle engines superior to those of road car engines, the honda cbr600 coils which are directly above the spark plugs in an enclosed and exceptionally hot engine bay have never failed atleast for me. This is on a turbo application running antilag. So the engine bay is in the vacinity of 200 deg C +

But then again those engines are the closest to f1 technology as far as rpm range and specific power are concerned so its another league.

MR331307 Experienced

MR331307

Posted
Posted

i think nissan dwell timing is set around 2.5

for the AU coils you should run 3.5 to get best results.Haltech make 3 channel ignitors for around $180 and they are unreal.

i use the falcon AU coils on my car and they are around $220 brand new and produce stronger spark then the Commodore coils and last longer

hefer81 Collaborator

hefer81

Posted
Posted (edited)

I got my holden coil packs for 40 dollars from ebay and andrew i think buying msd coils for a holden are a lot cheaper then the spitfire which still make it a pain in the arse when u go to change plugs.

Edited by hefer81
Justice Apprentice

Justice

Posted
Posted

I'm using Buick coils with RB20DET ignitor on a RB25DET series 2 engine.

The engine is missing a fair bit at high revs.

Have just replaced plugs and checked timing.

I'm fairly sure this has only come up since installing the wasted spark setup.

I dont fancy going back to the coils to test as I will have to buy a new coilpack loom (I chopped mine to install the wasted spark system).

Anyone have any ideas what could be causing this?

Would moving to the VN or AU coils be worth a try?

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