If Iridium plugs are fitted with Bosch Coil Packs, is there any advantage to increasing the plug gap?

I was under the impression that the point in having iridium (harder wearing) plugs and better coilpacks was that you could successfully produce a bigger spark without it being "snuffed" by the higher boost pressure, and that a bigger spark resulted in better combustion ergo more/smoother power.

So when I fit them, should I go for the standard 0.7, or bigger?

 

Anyone?

 

no one?

 

Steve

I've found that bosch coils/plugs would only allow a boost increase whilst maintaining a set gap. Opening the gap any further brought back a misfire. You could probably do one or the other but not increasing gap and boost.
The later cars seem to be able to run a wider gap, I think this is due to a better ignition amp rather than the coils or plugs.

Andy

 

That's cool: Thanks for the help.
I just didn't want to be gently destroying the nice new plugs with a larger voltage than needed. As I will be increasing the boost, I'll leave them stanard.

Thanks again.

 

Andy,

"The later cars seem to be able to run a wider gap, I think this is due to a better ignition amp rather than the coils or plugs."

I suspect this phenomenon could also be related to the improved head design on the later engines.

Moray

 

Andy,

"The later cars seem to be able to run a wider gap, I think this is due to a better ignition amp rather than the coils or plugs."

I suspect this phenomenon could also be related to the improved head design on the later engines.

Moray

 

Andy,

"The later cars seem to be able to run a wider gap, I think this is due to a better ignition amp rather than the coils or plugs."

I suspect this phenomenon could also be related to the improved head design on the later engines.

Moray

 

Andy,

"The later cars seem to be able to run a wider gap, I think this is due to a better ignition amp rather than the coils or plugs."

I suspect this phenomenon could also be related to the improved head design on the later engines.

Moray

 

apologies for the 4 duplicate posts... scoobynet was being extremely non responsive and timing out a lot... it gave no indication that it had managed to post anything at all.

 

And there was me thinking "Okay you've made your point"

 

Yes you could have a point (or two) there Murray

Andy

 

Points? Oh dear, aren't we bright sparks today?

 

LOL