Jump to content
SAU Community

Recommended Posts

copper is a better conductor, but thermally breaks down quicker.

If your car is a street car, dont waste ur money on iridiums, coppers changed every 15,000Km is much better... I don't know anyone that has kept platinum/iridium plugs on a high performance car for 100,000km.

If you race on a cuircut, then iridiums are better as they can take the abuse from the high temps...

Link to comment
https://www.sau.com.au/forums/topic/82224-iridiums/#findComment-1491264
Share on other sites

i had some problems with iridiums at the start missfiring after 4000. then the problem seemed to go away when i gapped them to .6. still happened every now and then. i would go the copper ngk thats what i swapped to and since have had no probs.

Link to comment
https://www.sau.com.au/forums/topic/82224-iridiums/#findComment-1491445
Share on other sites

B/S???

Iridiums will last 100,000 km's on a stock car....

As for copper - this is from Unique Autosports Dyno web page:

"Both of these items often pay for themselves by providing better power and economy. Iridium spark plugs often make more power than copper or platinum even if they are in good condition, especially at higher than standard boost levels."

Link to comment
https://www.sau.com.au/forums/topic/82224-iridiums/#findComment-1494839
Share on other sites

This Table  shows the conductivity of several metals.

Copper is clearly a better conductor.

Iridium has better corrosion resistance, thus lasts longer.

choose the plug that best suits your needs. If you cant be f*cked changing plugs every 15K - 20K km, then get iridiums.

That table shows thermal conductivity. Not electrical conductivity. 2 different things.

That said, I dont know whether copper or iridium is the better electrical conductor.

Also, AFAIK the iridiums used in skylines are have 0.6mm tips, which only has a 60000km life, not 100000km.

Link to comment
https://www.sau.com.au/forums/topic/82224-iridiums/#findComment-1494958
Share on other sites

Cheers.

Hmm Copper a better conductor then gold?? I thought gold was a better conductor.

What's the point of gold plated ends on audio cables etc? Wank?

Pure copper is better, but I dont believe spark plugs are pure copper otherwise I think it will be too malleable, and would corrode quickly.

I think they add other metals to make it more durable, but I might be wrong...

Link to comment
https://www.sau.com.au/forums/topic/82224-iridiums/#findComment-1496364
Share on other sites

I've got iridiums left at stock gap of 1.1mm.

I got plenty of missing at 12psi. I taped up the coilpacks and it disappeared.

Came back when the weather got colder (oh and i happened to up the boost to 1bar), so i bought some splifires and problem solvered.

Link to comment
https://www.sau.com.au/forums/topic/82224-iridiums/#findComment-1505493
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Thanks everyone for the replies and suggestions. Got the seats out (hoping I could find some existing grommets but no such luck). By tapping and measuring etc. I could figure out where I could drill through if needed. But first I borrowed an inspection camera and managed to go through factory holes in the chassis rail and could see that the captive nut was holding steady which is why it could retighten. So it was indeed a stripped section of thread, so I applied downforce by levering the bolt head with a screwdriver and went slowly back and forth until it came out. Camera helped a lot cos I could monitor that the captive nut was holding tight. Now I just have one very seized main subframe nut to tackle 😅
    • BOVs do have a purpose, if you ever log pressure before and after the throttle body, you will see a spike pre throttle on lift off from a WOT condition. Enough to bend throttle blades / damage e-throttle motors or simple assist in blowing off cooler pipes. FWIW, the above on really applies to those running at least 2 bar of boost. OP shouldn't have an issue, on the other hand, here are some videos of my shit box over a decade ago with some succulent dose with the airbox on and off. That shit box is unrecognisable these days 🫠    
    • I've tried all different combinations of BOVs/ no BOV and stock bypass valves over the years, on gear changes the stock bypass valve seems to get the car back on boost quicker because in part the turbos wheel speed isn't being slowed down by reversion, although they have issues holding boost much over the stock setting. Most aftermarket BOVs you can adjust the spring, tighter will make it open later and close sooner, but in my experience it'll cause a bit of flutter at low load/rpm anyway. I've also got some input into this whole no bov causing turbo wear, never had an issue on any on my turbos HOWEVER, I got my R33 GTST with 200k kms on it, with from what I can see still has the original turbo, no lateral shaft play but has about 4-5mm of play in and out which to me seems like a worn thrust bearing from years (100-150k kms?) of turbo flutter running no bov, so maybe there is some truth to it in the long run. But that'll never stop me loving the Stutututu while I have the car.   OP just wants to know if he can run a atmo vented BOV with no major issues and the answer is YES, plenty of people do it, there's no harm in installing it and seeing how it runs before spending $$$ on an aftermarket ecu, last time I bought a Nistune it was $2400 for install and a tune , unsure of todays prices but you get me. Crazy money to spend just to fix the minor inconvenience of stalling that can be overcome by letting the revs come down to near idle before putting the clutch in or a little bit of throttle to avoid it. You're better off leaving the ecu and tune for after a bigger turbo/injectors have been installed to take full advantage of the tune and get your moneys worth.   Let OP have his Whoosh sound without trying to break his bank haha
    • I see you missed the rest of the conversation where they have benefits, but nothing to do with avoiding breaking turbos, which is what the aftermarket BOV made all the fan boys, tuners, and modders believe was the only purpose for them...
    • But they do so for the other reasons to have a compressor bypass. It's in the name.
×
×
  • Create New...