45 replies to this topic

[leevx2.2]

As tittle is there another coil pack you can use on the z22se engine ?.

[oakmere]

You could use the LSJ / Saab unit if you are not using the Ion Sense with the stand alone. Not sure if slight modification is required for the std z22se cam cover?

[slindborg]

Normal 4 cylinder twin coil unit with ht leads.... Or go cop

[Bargi]

The Saab motor comes with individual coils doesn't it?

Guy on ZZ2SE site looking to fit LSJ coils here

Interestingly fitting a larger LS4 TB here

[leevx2.2]

The Saab motor comes with individual coils doesn't it?

Guy on ZZ2SE site looking to fit LSJ coils here

Interestingly fitting a larger LS4 TB here

bigger T-B :-)

cool looks good .

Does anybody have a clue how much power a standard coil pack can cope with ?

Edited by leevx2.2, 12 July 2014 - 09:22 PM.

[leevx2.2]

Normal 4 cylinder twin coil unit with ht leads.... Or go cop

cop wtf is that 

[slindborg]

Coil on plug... A coil pack can cope with almost any power. Since power has chuff all to do with spark voltage requirements, compression and boost on the other hand do...... Although most of that is sorted with plugs and gapping. Revs tends to define the limitations of a coil pack and how saturated it gets

[leevx2.2]

Coil on plug... A coil pack can cope with almost any power. Since power has chuff all to do with spark voltage requirements, compression and boost on the other hand do...... Although most of that is sorted with plugs and gapping. Revs tends to define the limitations of a coil pack and how saturated it gets

plugs and gap is what i have been thinking as well  talk to me ,smaller gap more boost ?

[techieboy]

What does the ECU guy advise and the rolling road guy?

[slindborg]

What is the actual issue? rather than going down a solution for nothing route. (Very Japanese that is )

[leevx2.2]

misfire issue i thought i had sorted it but today it has come back ,it might be the crank sensor so i will be changing that .

[leevx2.2]

What does the ECU guy advise and the rolling road guy?

didn't happen on the rolling road  so very strange .

[slindborg]

Under what conditions? And is it major, or just a little stumble.

[Bargi]

A coil pack can cope with almost any power. Since power has chuff all to do with spark voltage requirements, compression and boost on 

 

I had assumed the above, although found a blog post where a guy with a tuned Saab was having misfire problems that later coils fixed here so could possibly be related

[leevx2.2]

under full hard acceleration  not all the time  stumble i would say 

[leevx2.2]

 

A coil pack can cope with almost any power. Since power has chuff all to do with spark voltage requirements, compression and boost on 

 

I had assumed the above, although found a blog post where a guy with a tuned Saab was having misfire problems that later coils fixed here so could possibly be related

 

Mr Detective Mr B you are good lol

[oakmere]

Don't think I have ever heard of the original coil being a problem. People pushing over 400bhp with turbo conversions. Though if running the original 10 year old unit it is probably worth a swap.

[Nev]

plugs and gap is what i have been thinking as well  talk to me ,smaller gap more boost ?

Hi Lee, Here are a few points that may be relevant: 1. Consider tapping the spark plug gaps down to 0.7 or even 0.6 mm, its easily done and can be reversed if it doesn't help. As you are likely pushing close to 2 bar of boost this is deffo a worth while experiment. For reference, I've tapped mine down to 0.7mm and they were fine up to 2.1 Bar of boost. 2. Deffo buy a new coil pack, you are possibly using wasted spark ignition on your new ECU which will hammer your coils 4 times more than before. I recently swapped out my 10 year coil pack (also on a wasted spark ECU) and it helped smooth things a bit. Be prepared to swap you coil pack 4 times as often basically (and also your spark plugs for the same reason). 3. Coilpacks can get heat saturated which can cause variance in their performance, eg rolling road vs road driving. Can you take off any cover that is above them to allow air to flow better? 4. I would image (but its a guess) that a brand new OEM coilpack should easily be able to ignite your mixture. The 20,000 odd volts will jump the gap, even if you ran 3 bar of boost, it's just a matter of reducing the gap, strong battery, clear contact, good engine earthing. 5. Consider a colder running spark plug, they can get too hot which can cause various issues, in particular cracking and crumbing of the ceramic (which can fall into the cylinder and cause a terrible mess). I run the max coldness spark plug (9 I think with no problems). Best of luck, it's a shame you don't live closer, I would have been keen to come over and help out as best I could.

Edited by Nev, 13 July 2014 - 06:17 AM.

[vocky]

z22yh can be made to fit, but obviously not with a z22se ECU.

 

Are you using single electrode plugs ? Try some standard vauxhall triple electrode plugs 

 

Or you could try the Dutch software 

[leevx2.2]

plugs and gap is what i have been thinking as well  talk to me ,smaller gap more boost ?

Hi Lee, Here are a few points that may be relevant: 1. Consider tapping the spark plug gaps down to 0.7 or even 0.6 mm, its easily done and can be reversed if it doesn't help. As you are likely pushing close to 2 bar of boost this is deffo a worth while experiment. For reference, I've tapped mine down to 0.7mm and they were fine up to 2.1 Bar of boost. 2. Deffo buy a new coil pack, you are possibly using wasted spark ignition on your new ECU which will hammer your coils 4 times more than before. I recently swapped out my 10 year coil pack (also on a wasted spark ECU) and it helped smooth things a bit. Be prepared to swap you coil pack 4 times as often basically (and also your spark plugs for the same reason). 3. Coilpacks can get heat saturated which can cause variance in their performance, eg rolling road vs road driving. Can you take off any cover that is above them to allow air to flow better? 4. I would image (but its a guess) that a brand new OEM coilpack should easily be able to ignite your mixture. The 20,000 odd volts will jump the gap, even if you ran 3 bar of boost, it's just a matter of reducing the gap, strong battery, clear contact, good engine earthing. 5. Consider a colder running spark plug, they can get too hot which can cause various issues, in particular cracking and crumbing of the ceramic (which can fall into the cylinder and cause a terrible mess). I run the max coldness spark plug (9 I think with no problems). Best of luck, it's a shame you don't live closer, I would have been keen to come over and help out as best I could.

Cheers mate I have played with gap sizes and I do want to get cooler running plugs .so will do that I am running 8 at the moment . I will get a brand new coil pack or I might try the Saab single units :-)