VZ SV6 Spark Plugs? better performance?

[RFish]

Hey guys.
Quick question, does putting better brand spark plugs in, such as platinum ones, increase the kw of your car? My mate seems to think for the price they are one of easiest way to increase the power of your car? Any thoughts on this and if so anyone know any good brands?

Thanks

[greenacc]

Its been asked before. Your mate has been struck by the placebo effect. Its all BS, the fuel either burns or it doesn't.

[Gus]

Sort of a hi-jack
but how much is the usual cost for replacement of spark plugs and surrounding servicing?

[Krisp]

im under the impression there are already iridums in there. you have to remove the intake manifold top to change the plugs on the alloy tech

[richardpalinkas]

not sure on the alloytecs, but with the ls1 i was reading in a magazine, they changed simple things like the airfilter, tested, spark plags, tested and spark leads and tested and found that each had a gain of somewhat, i think around 15kw or something just by doing it, but then again, who knows the condition of the original parts replaced

[WogBoyz]

I changed the plugs n leads on ve ssv and not differnece in power, maybe a tad smoother running

[CRUSTIN]

Changing plugs and leads will give it a more powerful spark, but the timing of the spark is much more important, run ultimate, and get it tuned, if u can afford to run ultimate 24/7.

[Luke52]

The Alloytec engines have platinum/irridium plugs in there as standard anyway...

"Crustin" and "WogBoyz" I don't quite understand how you can change the leads on a car which has coil-on-plug ignition.

[Escape-The-Fate]

The Alloytec engines have platinum/irridium plugs in there as standard anyway...

"Crustin" and "WogBoyz" I don't quite understand how you can change the leads on a car which has coil-on-plug ignition.

not sure on the irridium, last time i went to buy plugs best i could get was platinum for the alloytec..was told irridium and alloytec dont mix

[Luke52]

Yeah, wasn't sure which it was. Regardless, platinum and irridium are both considered "performance" plugs. However I am very sceptical of any actual performance difference. The only reason I'd ever buy precious metal plugs would be purely for the life of the plug, especially in an engine like the Alloytec where changing plugs isn't quite as simple as most or if they were a standard application in that model.

[Trent L]

Genuine Holden plugs are just re-badged Bosch Platinums.

Last lot I got were $7.70 @ but when you only have to change them every 120,000Kms it isn't a big price to pay.

[WogBoyz]

The Alloytec engines have platinum/irridium plugs in there as standard anyway...

"Crustin" and "WogBoyz" I don't quite understand how you can change the leads on a car which has coil-on-plug ignition.

Let me help you understand

[azazeldeath]

2 things, richard; did they run new plugs, airfilter and the likes for the base and then gain the power? If not the results are invalid.
2nd even the LS1 runs coil packs, I have heard of performance coil packs but converting the engine to run spark plugs would decrease performance and probably cost you a small fortune since it would have to be custom made

[poweredbycng]

Firstly, the Alloytec (GM HFV6) engines have coil ON plug ignition and therefore have NO leads as the coils sit right on top of each spark plug. The L76, L98, etc. V8 engines have coil NEAR plug ignition and therefore have leads connecting each coil to the appropriate plug.

The Alloytec engines are specified with Bosch platinum spark plugs as standard. These are the best spark plugs for this particular engine as they put the ignition system under the least strain as the plugs wear. In practice, iridium plugs do not last quite as long as the platinum plugs (part5icularly double or quad-platinums) under most applications, especially if you're running the engine on LPG.

[CRUSTIN]

Luke, when I said Leads, i mean as an example. Ive done a bit of work on the intake, so i knew about 'COPI' before that post.

[Luke52]

Let me help you understand

I stand corrected. I was almost certain they had coil-on-plug ignition.

Luke, when I said Leads, i mean as an example. Ive done a bit of work on the intake, so i knew about 'COPI' before that post.

Er, right.

[RiCeY]

The more expensive plugs simply have a longer life and need to be changed less often.

Any performance gains would simply be due to the original items wearing out and not operating at 100%.

[poweredbycng]

Just get the Bosch platinum plugs direct from Holden. They last the distance and are good value compared to the iridiums, plus they're the recommended plug for the engine.

[CRUSTIN]

I stand corrected. I was almost certain they had coil-on-plug ignition.



Er, right.

That's the V8 fool. Notice the 4 leads on the side, and being a V, 4 on the other side. 4 + 4 is 8.

We are talking about an alloytec 6 arnt we?

[Luke52]

That's the V8 fool. Notice the 4 leads on the side, and being a V, 4 on the other side. 4 + 4 is 8.

We are talking about an alloytec 6 arnt we?

It's a V8? NOOOO, REALLY?

Thanks for the update, Einstein. WogBoyz mentioned the V8 engine, which I thought had COPI. I was however corrected.

And yes, we WERE talking about the Alloytec motor prior to that, so I still don't understand why you mentioned changing the "leads" on one.

[CRUSTIN]

Your so slow. I give up.

[Luke52]

YOU'RE a moron.

What you said is like saying "I changed the dizzy cap on my VZ and it ran better." It's a stupid example because the car in question doesn't even have the parts you mentioned replacing!

[Coaly69]

"Like sands through the hourglass, these are the days of our lives" Hehe sorry boys couldn't help that 1. Just to sidetrack a little, are the plugs on sv8's a hassle to replace as well? Never had a miss on the vy so wanna know what I'm in for (130 thou on the sv8 atm).

[WogBoyz]

"Like sands through the hourglass, these are the days of our lives" Hehe sorry boys couldn't help that 1. Just to sidetrack a little, are the plugs on sv8's a hassle to replace as well? Never had a miss on the vy so wanna know what I'm in for (130 thou on the sv8 atm).

on my ve the back 2 plugs on either side were bitches to get out, and the front driver side one aswell, as the oil dipstick is right in the way

[Coaly69]

Humbug. Things were so much easier in the VH days. 2 hours to replace the old blue motor, now it's an hour to replace spark plugs lol. Also decent 2nd hand blue/black motors were $200, a tail shaft was $50 (Then another $50 cos the uni blew).