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Best Rb25 Neo Ignition Setup?

Guishnu

By Guishnu,
in Engines & Forced Induction

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Guishnu Enthusiast

Guishnu

Posted
Posted

Hi guys,

I wondered if anybody had an opinion on the best ignition setup for an RB25DET neo currently running circa 500hp but I'm about to start pushing for 650 at the wheels. At the moment I'm running standard coil packs, 8 grade plugs. It seems to be blowing out the spark in 5th gear at full boost (1.4 bar on a GT3076r)

Splitfires are an obvious choice, but what is everybody else running?

Cheers

Chris

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DVS JEZ Grand Master

DVS JEZ

Posted
Posted

Have a search on ebay.au - there were some brand new OEM nissan coils going for the same price or less than Splitfires.

I wouldnt use these ebay nissan coils. Had a customer use

Some. Was going good till we got to 18psi and one of the coils split in half.

They had nissan logo's and looked genuine but didnt last a dyno session

zebra Grand Master

zebra

Posted
Posted

grab a set of falcon coils in wasted spark

these are cheap and better then AU packs. need 3 of them

http://www.msdignition.com/Products/Coils/Stock_Replacement/8224_-_GM_Coil_Pack,_2_Tower_Style.aspx

search the part number on ebay

Both these need ignitors

best off with LS1 coils if you dont want to use splitfires etc

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Are you sure that turbo is capable of pushing that much HP at the wheels?

It's only meant to be able to push 550hp at the flywheel on paper.

This is what I'm wondering.

If he is not upgrading turbo, then Splitfires will more than handle the task for a GT3076 as they are only ever going to push 300rwkw (400rwhp) on PUMP.

Hell Splitfires will do 400rwkw (545rwhp) as many have before. Well beyond what a GT3076 will ever make.

But... To go to 485rwkw (650rwhp), you'd be putting a very sizeable turbo on there, so big you would not be even mentioning anything based on stock ignition at that level.

Guishnu Enthusiast

Guishnu

Posted
  • Author
Posted

The turbo is currently running 500hp at 1.4 bar. I'll wind this up as far as we can go then swap it out for a new GTX series Garrett or BW equivalent.

Say I was shooting for 600 rwhp, what do you recommend in terms of:

-plugs

-coil packs

-leads?

Thanks

Chris

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

500hp or 500rwhp?

There is no way a GT3076 will make 500rwhp (in Aus terms). So 600rwhp is most certainly out of the question.

600rwhp is not outside the Splitfire possibilities, the upper end of it though realistically.

Given you'll need at least a GTX35, and easily 25psi+ to get there and given that you'll need good spark.

What ECU are you using?

rob82 Mentor

rob82

Posted
Posted

As far as an inductive ignition system goes the ls2 coils are very good and cheap too - they are not obviously not coil on plug though. The other option is the ford xr6t coils which are also very good and cheap. I've run 1mm plug gap with a 2jz and 2.3bar boost with the xr6t coils.

Guishnu Enthusiast

Guishnu

Posted
  • Author
Posted

500hp or 500rwhp?

There is no way a GT3076 will make 500rwhp (in Aus terms). So 600rwhp is most certainly out of the question.

600rwhp is not outside the Splitfire possibilities, the upper end of it though realistically.

Given you'll need at least a GTX35, and easily 25psi+ to get there and given that you'll need good spark.

What ECU are you using?

The engine is (was, as it's currently on it's way out of the car) running 498.9 fwhp, mapped on a Link G4 plug and play with a 5 bar map sensor - tested on a Dyno Dynamics rig. I set the atmospherics myself and placed the IAT sensor, so i know it's right. The GT3076R won't push 500rwhp, you're right. But as i said in my previous post, i'm currently on the journey for 600rwhp and need to upgrade the ignition system anyway - so want something that's fit for purpose.

Cheers

Chris

  • 3 months later...
japmuscle Newbie

japmuscle

Posted
Posted (edited)

Hi Chris,

Can you please confirm what your definition of "fwhp". I assume you mean flywheel horsepower (bhp) and not front wheel horsepower? :D I prefer to use wheel horsepower (whp) or brake horsepower (bhp). Also you say it was measured on a Dyno Dynamics (wheel) dyno. How does the dyno calculate "fwhp" when it measures tractive effort, wheel speed and weather conditions only? Is the engine speed also measured by the dyno? Could you upload an image of your dyno printout? Pictures speak 1000 words.

Sincerely David.

Edited by japmuscle
Torques Mentor

Torques

Posted
Posted (edited)

In the UK they mostly state power at the flywheel and in HP.

This looks much bigger than RKW,

So 498.9FWHP (GOSH) might translate into a more reasonable 300 RKW (rough guestimate)

Also what do you guys mean by introducing wasted spark?

Why would using other coils change anything to the ignition pattern?

Clearly the ignition pulse for the coils remains the same ...

(just wondering)

Edited by Torques

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