29 replies to this topic

[Dusky]

 

I was getting fouling with 7's when cold and not driven flat out, fitted 6's as recommended on here and its fine.. (stg 4 1380)
 
A set of NGK's is less than £10 posted on ebay, so why get anything else? 

Because there are gains to be made over ngk.
 

 
There really aren't mate.

With all respect, there are. I've posted my findings and dyno results before.
It's more than just raw power. Behaviour of the engine and drivability are a big factor too.

[hhhh]

Cross references are never exact. One manufacturer's heat range can be larger than another's and you'll often see several part numbers of one manufacturer cross to the same part number in another manufacturer's offerings. It's more complicated than it appears. I'd like to see the dyno results.

Edited by hhhh, 10 May 2017 - 04:39 PM.

[racingbob]

accuspark 3 prong are great got 7's in mine

[MIGLIACARS]

NGK for me every time, Even in the big powered race engine,,,, everytime

[warning634]

I have spoken with exon race engines, and he thinks that it may be too rich at idle, so im going to have a look at the idle/mixture jets and go from there.

I have ordered some accuspark AC7C plugs just to try, as doing some digging around I have heard good things.

Cheers

Kev

[r3k1355]

 

 

 

I was getting fouling with 7's when cold and not driven flat out, fitted 6's as recommended on here and its fine.. (stg 4 1380)
 
A set of NGK's is less than £10 posted on ebay, so why get anything else? 

Because there are gains to be made over ngk.
 

 
There really aren't mate.

With all respect, there are. I've posted my findings and dyno results before.
It's more than just raw power. Behaviour of the engine and drivability are a big factor too.

 

 

Only if you were testing some dodgy no-name plugs against a well known brand.

 

Between the well known makes there's little difference, NGK's are pretty decent.

[r3k1355]

I have spoken with exon race engines, and he thinks that it may be too rich at idle, so im going to have a look at the idle/mixture jets and go from there.

I have ordered some accuspark AC7C plugs just to try, as doing some digging around I have heard good things.

Cheers

Kev

 

Just check some grade 6 plugs in it, I'm surprised you're running grade 7 on an NA motor, I've only used grade 7 on turbo motors before, and even then only when pushing a decent amount of power.

[Dusky]

 

 

 

 

 
There really aren't mate.

With all respect, there are. I've posted my findings and dyno results before.
It's more than just raw power. Behaviour of the engine and drivability are a big factor too.
 

 
Only if you were testing some dodgy no-name plugs against a well known brand.
 
Between the well known makes there's little difference, NGK's are pretty decent.

Not really. NGK Vs brisk LGS and multisparks(true multispark plugs, not multi prong plugs).
When I get back at my parents house I can post all exact data again, should be on this forum somewhere..
However, I can say that with the LGS and multisparks cold running improved drastically, to the point where I didn't need choke anymore. Wich is especially helpful if you run a Weber with the cold start blocked like most racers do(prevents over rich mixture when you're cornering and braking).
Power outputs are roughly the same, some 2-3% differences but I don't consider that too important.
Torque curves were a tad longer and flatter on the brisks.

On blind testing 5/5 people found the multisparks the nicest to drive in a bit cammed engine.

[r3k1355]

Fair play if they give better driveability when cold thats a bonus.

 

They remind me somewhat of the bosch tri-spark jobbies.

 

 

Good types of plug to use as long as you don't need to set the gap on them!

Edited by r3k1355, 11 May 2017 - 10:50 AM.

[Sprocket]

^

 

Fair play if they give better driveability when cold thats a bonus.

 

They remind me somewhat of the bosch tri-spark jobbies.

 

 

Good types of plug to use as long as you don't need to set the gap on them!

 

The spark only ever jumps across to one of the ground electrodes, never all of them at any one time. The only reason there are three or four ground electrodes, is to increase their service life, a bit like the platinum and iridium plugs. The spark is still the same with the same gap. The only potential differences would be how the spark is presented to the combustion chamber or the overall resistance in the plug its self (not considering the plug temperature range)

Edited by Sprocket, 11 May 2017 - 11:10 PM.

[Dusky]

The brisk multisparks are indeed a bit different ^^
As far as I know they're the only plug effectively giving multiple sparks. Though I haven't been following plug advancements lately. Did see someone researching laser ignition though. Sounds promising.

https://youtu.be/D5HmtSW07bE

Edited by Dusky, 11 May 2017 - 11:41 PM.

[giannoutsos]

Hi Dusky,
Which brisk plugs are you using in what engine?
Thanks
John

[Dusky]

Hi!

For the multisparks I use brisk DR15ZC for road engines, DR14ZC for racing use in my clubby

Cheers

[giannoutsos]

Thanks Dusky

[gazza82]

Fair play if they give better driveability when cold thats a bonus.
 
They remind me somewhat of the bosch tri-spark jobbies.
 

 
Good types of plug to use as long as you don't need to set the gap on them!

You don't. They are preset and when worn, you replace them.