Have I exceeded my Platinum Plugs servicibility?

[superspit]

Hi Skliner's, how's it all....er, anyways....

1 year ago I had my sparkplugs changed (OEM Platinum $25.00 each).

I remember some massive debates on coppers versus plat, iridium etc...and their comparitive longevity/cheapness/replacement intervals, between the differing types.

I remember sticking with 'long life plugs' (decided platinum over copper), as I am not happy with the idea of having to remove the top section of a turbo 'line every time I wanna do the plugs. (apparantly often with coppers).

I have now done (about) over 20K with these plugs, car still seems ok, but it's hard to tell with these sorts of things over time, and you naturally getting use to something like a slight loss of power.

I do not want to start a debate, but i would like to know, in your opinions, if I've actually exceeded the life of my platinums (I run slightly higher than stock boost ie. 10-11 pissants). ...and if there is a chance that I'm not getting 'sparkling' performance could it be attributed to dying plugs (?). My Car idles beautifully, always has, but but just doesn't "get to the top" in each gear like I thought it did a year ago.

If my car was N/A, would these expensive plugs last longer? Have I exceeded the plug's servicibility?

If I get an answer tonight....guess what I might be doing tomorrow!!?

In anticipation.......

Mark Superspit. :wassup:

[Sumo]

The coppers I ran acctually burnt the electrode off 4 of the 6 plugs. Nice hard run - 11 psi everything else stock

So now i use Iridiums, and pulled them out at 10 000kms last week and they look like new.

Cheers

Sumo

[superspit]

Bump.....I guess I would like more opinions....if possible?

Thanks goes to SUMO.

[Eug]

i think a rough ball park figure is 100 000km for platinum plugs, but i guess depending

on how much work done has been done to your engine and how hard you drive the car,

i am pretty sure you'd expect to see less than that.

a mate of mine used to do a full service on his gtr every 5000km, and yes he changed all

6 sparkies and all platinum.

[blind_elk]

Yes, platinums are supposed to be good for 100k kms. My experience has converted me to the Iridiums. I believe they are cheaper than the platinums (mine cost me $18 each). I run standard (1.1mm) gap, and 10 psi boost, producing 180Awkw from a RB25DET. Now the car starts easier, and doesn't miss at all.

[superspit]

Yes, platinums are supposed to be good for 100k kms. My experience has converted me to the Iridiums. I believe they are cheaper than the platinums (mine cost me $18 each). I run standard (1.1mm) gap, and 10 psi boost, producing 180Awkw from a RB25DET. Now the car starts easier, and doesn't miss at all.

Woah!! At 1.1 mm gap my car wouldn't start!!!

I use .75-.8.. and all seems well.

I'd like to run a bigger spark though...wish I could! (mmm.....splitfires??)

I guess I know that N/A cars could expect 100k, but a daily driver turbo nana driver?

Thanx guys.

[Sumo]

I run a 1.1mm gap and have no problems whatso ever.

Cheers

Sumo

[clean_vl]

Just found out somthing you guys might be interested to know.

i was doing some work at NGK melbourne, the other week and i was shocked to see that the life of the iridiums and platinum rated at 100,000km (as we all know) but the iridiums IX is only rated for 60,000km. just somthing to take note, as most of us push ours cars on a day to day basis.

[superspit]

cool, and thanq SUMO & VL .....just with extra boost my car was missing at anything above my .8 gap size (kind people suggested this as a fix when increasing boost, and it worked..thanx SAU!!). Car could start but wouldn't transition into boost without popping.

OK guys....<>60000km or <>100000kms...this is for a N/A car? With turbo cars, what could I reliably expect from even these 'high quality' plugs? 10,15K, 25K?

Surely, no plug could do 100K in a turbo car that is driven anything above granny mode and burning expensomax petrol?

Has anyone ever heard of a good quality plug in a turbo car exceeding 50k, for example??

Please, come back?...and I thank you.

[blind_elk]

cool, and thanq SUMO & VL .....just with extra boost my car was missing at anything above my .8 gap size (kind people suggested this as a fix when increasing boost, and it worked..thanx SAU!!). Car could start but wouldn't transition into boost without popping.

OK guys....<>60000km or <>100000kms...this is for a N/A car? With turbo cars, what could I reliably expect from even these 'high quality' plugs? 10,15K, 25K?  

Surely, no plug could do 100K in a turbo car that is driven anything above granny mode and burning expensomax petrol?

Has anyone ever heard of a good quality plug in a turbo car exceeding 50k, for example??

Please, come back?...and I thank you.

NGK specify a particular plug for the turbo versions ie RB20DET, RB25DET, (which may be different to the plugs recommended for N/A versions). So if you get the recommended plug, then they should last the 60k - 100k kms.

Your local spare parts supplier should have a copy of the NGK catalogue - have a browse through that.

[Ronin 09]

Anyone used OWS iridium plugs?

[superspit]

NGK specify a particular plug for the turbo versions ie RB20DET, RB25DET, (which may be different to the plugs recommended for N/A versions). So if you get the recommended plug, then they should last the 60k - 100k kms.  

Your local spare parts supplier should have a copy of the NGK catalogue - have a browse through that.

this makes sense...thankyou. I'll inspect this catalogue!!

But I'll stick to the original OEM model plugs then, and go for another 30k ....at least!!!!

Regards everybody...you guys are sic as.

[blind_elk]

FYI, for your R33 (RB25DET, 8/93 -> 1998), the recommended NGK plug is PFR5G-11 (platinum), and BKR5EIX-11 in the Iridiums.

[WLD747]

My experience with platinums are they are overpriced but idle smooth. Also they should not be gapped otherwise you destroy a special coating. Also i have found they cause mis-fire problems on my car at standard gapping.

As soon as i changed to coppers the boost felt stronger and no misfire. I also change em every 5000k no problems.

But thats my opinion.

[knore]

got iridiums in mine, gapped myself to 0.8mm, been in there for about 12,000km now and are pretty much perfect

[Jax]

All should have a look at other post "spark plug gap dilema"