Spark plug HELP

Timnkoo · Post by **Timnkoo** » Tue Nov 15, 2005 12:52 am

Hi guys and gals,
Just wondering whether $70 is a good price for a set of 4 BKR6EIX-11 iridium plugs is good. They are NGK IRIDIUM IX plugs...aslo want to confirm that these are the ones to fit into the front of a GR.

Also need some knowledge of the choice of iridium over the normal type. How many k's should I expect etc etc.

Thanks again for all the help in advance,
Tim

khunjeng · Post by **khunjeng** » Tue Nov 15, 2005 7:45 am

the plugs I would be more concerned with are the ones at the back as they are hard to get to...I would do at least every 25k but actually I normally do it every 10-15k cos I can

but I think its a bit excessive

Also make sure you have decent leads (not sure about the GR) but as the GPX has ignition coils on the front 3 cyl. with 3 leads to the rear..I had some made for about $100 which are really decent..although some go to the extreem with leads...some decent racing ones will do the trick.

Correct me if I'm wrong.

ahew · Post by **ahew** » Tue Nov 15, 2005 8:49 am

25k?

i thought the point of getting the iridiums was because they last longer so you don't have to change them as often. like 100k at least.... i remember seeing a post somewhere on here about this.

Post by **Bennoz** » Tue Nov 15, 2005 9:01 am

Yeah 100k for the rest of the Japs - us good old aussies & our sh*t quality fuel... leads to all manner of deposits left on the plugs.

ahew · Post by **ahew** » Tue Nov 15, 2005 9:20 am

ahh... i see... grasshopper now understands.

Timnkoo · Post by **Timnkoo** » Tue Nov 15, 2005 11:44 am

So do you guys think that is a good price or not?
Tim

ahew · Post by **ahew** » Tue Nov 15, 2005 11:56 am

hey timnkoo, have a look at the group buy forum and compare the prices. if it's a little more expensive than that you'd still have a pretty good deal

http://www.ftoaustralia.com/modules.php ... pic&t=5347

khunjeng · Post by **khunjeng** » Tue Nov 15, 2005 8:04 pm

I bought 6 PFR7M (Platium) for $108 (18 ea) 1 week ago...if that gives you any idea. I can get BKR7EKC-N (stds) for $12ea.

Post by **Bennoz** » Tue Nov 15, 2005 8:38 pm

Timnkoo PMed me for info - I thought my reply would be worthwhile posted up for everyone. Note we are talking GR's here - but good general Spark plug info:

Hey mate,

The actual sizes are identical. The reason that Mitsubishi state 2 different types is beacause of the difficulty in getting at the back ones to change them.
The only difference is that the other type specified are heavier duty & last longer. Now that Iridium & Platinum plugs have become available, you can have a plug that lasts upto 100,000kms. I recommend using Irdidium plugs all round - keep in mind that these new types of plug were not in existance when the FTO motor was designed - another reason the manufacturers recommendation is for a heavier duty normal type plug.

You can tell an NGK Iridium plug by the 'IX' being in the part number.

To me the difference between an Iridium & platinum is irrelevant as I change my plugs every 20,000kms regardless. I use BKR6EIX-11 all round. Great performance & fuel economy & they never foul up. Its worth spending the extra money on things like spark plugs - a full set for me is $110

Here's a comparison chart for you:

Nickel Alloy - Service life 20,000 - 40,000 kms
Benefits - Standard style of spark Plug.

Nickel Alloy (V-Groove) - Service life 20,000 - 40,000 kms
Benefits - Service life Improved ignitability due to sparking at periphery of the electrode

Platinum 0.8 mm dia. - Service life 100,000kms
Benefits - Long service life and even better ignitability due to a small diameter centre electrode

Iridium 0.8 mm dia. - Service life 160,000 kms
Benefits - Extremely long service life. Same level of ignitability 0.8 mm dia. Platinum

Iridium IX 0.6 mm dia. - Service life 60,000 kms
Benefits - Long service life. Same as 0.8 mm dia. of Platinum and extremely good ignitability characteristics. (Better than 0.8 mm dia. platinum or 0.8 mm dia. iridium)

khunjeng · Post by **khunjeng** » Tue Nov 15, 2005 10:53 pm

ta dood...I wanted to buy the IX ones but they only had the Platnium ones in stock....nice info...