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Rb26/30 Ignition Setup Help

grunter01

By grunter01,
in Engines & Forced Induction

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grunter01 Enthusiast

grunter01

Posted
Posted

Hey guys,

I have a rb26/30 with all the goodies in it, I am wanting to run 35+psi on E85 and i have been told that the ignition has to be changed to do so. Can you big hp guys recommend a setup to run as i am chasing 750rwhp through my glide. cheers

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https://www.sau.com.au/forums/topic/410235-rb2630-ignition-setup-help/
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rob82 Mentor

rob82

Posted
Posted

http://www.aemelectronics.com/high-output-igbt-inductive-smart-coil-1240

This is what I would use - best inductive ignition system I've seen.

I tend to prefer running inductive ignition system compared to cdi on almost all applications - especially on street cars.

kitto Mentor

kitto

Posted
Posted

http://www.aemelectronics.com/high-output-igbt-inductive-smart-coil-1240

This is what I would use - best inductive ignition system I've seen.

I tend to prefer running inductive ignition system compared to cdi on almost all applications - especially on street cars.

They look like awesome coils. No CDI or igniter unit required. Less to go wrong?

How have they performed for you rob?

Why do you not like CDI systems? Because of the electrical interferance and low dwell time?

rob82 Mentor

rob82

Posted
Posted (edited)

They look like awesome coils. No CDI or igniter unit required. Less to go wrong?

How have they performed for you rob?

Why do you not like CDI systems? Because of the electrical interferance and low dwell time?

I'm about to turn up the wick on a certain engine that will be in the vacinity of 2000hp with these coils - currently at 1260hp and no issues with 1.1mm at 18psi. Have seen them not misfire with 1.1mm gap at this boost with mixtures as rich as lambda 0.67.

CDI is good if you want high peak secondary current and minimal dwell time - issues I have with CDI is eletrcial interference and low spark duration coupled with extra cost. Only thing with these coils and LS2 series coils is the dwell time can be as large as 5ms at 14V for full spark energy which can be a bit much on non sequential setups with rapid accelleration rates and flat shifting. Doubt most people would run into this issue though.

Edited by rob82
The Dan Grand Master

The Dan

Posted
Posted

I'm about to turn up the wick on a certain engine that will be in the vacinity of 2000hp with these coils - currently at 1260hp and no issues with 1.1mm at 18psi. Have seen them not misfire with 1.1mm gap at this boost with mixtures as rich as lambda 0.67.

CDI is good if you want high peak secondary current and minimal dwell time - issues I have with CDI is eletrcial interference and low spark duration coupled with extra cost. Only thing with these coils and LS2 series coils is the dwell time can be as large as 5ms at 14V for full spark energy which can be a bit much on non sequential setups with rapid accelleration rates and flat shifting. Doubt most people would run into this issue though.

Isn't it easier to ignite the air/fuel on an engine that has a much larger bore like that one?

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

http://www.aemelectr...smart-coil-1240

This is what I would use - best inductive ignition system I've seen.

I tend to prefer running inductive ignition system compared to cdi on almost all applications - especially on street cars.

Certainly look like great value for money - any potential downside?
rob82 Mentor

rob82

Posted
Posted (edited)

Isn't it easier to ignite the air/fuel on an engine that has a much larger bore like that one?

Yep - generally the higher the torque the greater the cylinder pressures so the higher harder it is on the ignition system...

I haven't try these coils on an xr6t, because they wouldn't fit very well but the are probably one car that really pushes a coils ability and I know just the car to test on. If I get to test them on that car I will let you guys know how they hold up?

Also the only other downside is that they aren't cop...

Edited by rob82
HYPED6 Collaborator

HYPED6

Posted
Posted

We have run these coils on a 140mph 1jz running nos for the last 12 months.

Very good coil charge time with amp saturation. Would I run them on 50+psi probably not.

That's not to say that they wouldn't do it, I would not like to commit and say they will and then have to fit CDI any way.

I have found that inductive just seems to run nicer with back to back tests. Engines just sound that little bit happier.

The Dan Grand Master

The Dan

Posted
Posted

We have run these coils on a 140mph 1jz running nos for the last 12 months.

Very good coil charge time with amp saturation. Would I run them on 50+psi probably not.

That's not to say that they wouldn't do it, I would not like to commit and say they will and then have to fit CDI any way.

I have found that inductive just seems to run nicer with back to back tests. Engines just sound that little bit happier.

Everyone likes a happy engine don't they

HYPED6 Collaborator

HYPED6

Posted
Posted

Well at the end of the day, after cylinder pressure and temp, Egts, MBT, BSFC, gudgeon pin size, exhaust wheel temp, oil pressure and temperature all we are doing in pleasuring the engine just how it likes it.

Golden rule, give the engine what it wants. If it wants CDI it gets CDI. If it want 28 degrees of ignition timing at 30psi of boost and a 175 shot of gas then give it 28 degrees.

Its kinda like an extremely high maintenance gf. You work and work for months just to be able to take it out and show it off to your friends then it craps in your face just to keep you keen (Or on the highway at the top of 4th gear) when it doesn't get its way.

kitto Mentor

kitto

Posted
Posted

The only downfall i can see with these is they are a damn big coil. Mounting 6 of these may not be the easiest to do so.

But i do like, and these have risen to the No 1 on my most likely coil to buy for my setup.

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

I'm about to turn up the wick on a certain engine that will be in the vacinity of 2000hp with these coils - currently at 1260hp and no issues with 1.1mm at 18psi. Have seen them not misfire with 1.1mm gap at this boost with mixtures as rich as lambda 0.67.

CDI is good if you want high peak secondary current and minimal dwell time - issues I have with CDI is eletrcial interference and low spark duration coupled with extra cost. Only thing with these coils and LS2 series coils is the dwell time can be as large as 5ms at 14V for full spark energy which can be a bit much on non sequential setups with rapid accelleration rates and flat shifting. Doubt most people would run into this issue though.

So these would be worth a try on my RB30/25 aiming at 330 - 350 awkw with a rev limit of 6800 and no flat shifting or would I need to change my Link G4 with 4 ignition channels for a Link Extreme to allow sequential firing?

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