Outer Limits 4x4 Board

while I a swapping motors have decided to replace everything I can now, timing belt, water pump, plugs, leads etc .. soo

Do I bite the proverbial bullet and get the iridium jobbers at $18 each .. or go platinum (have not priced them yet) ?
usual run is at least 40ks .. and mostly on LPG

Go the best you can buy. I use Platinum, mainly because my car runs on gas and it has backfired a few times. Further, I dropped the plug gap down from the recommended 1.0 to 1.1 mm to 0.9 mm. This was based on the NGK recommendation, and also the fact that as the plugs get older, the gap does increase -they had opened up to about 1.6 mm on the last set when it backfired. At least if I start with a smaller gap, it will opefully go a lot longer before it backfires again. I think that the performance is slightly down on what it should be - maybe because the gap is a bit small?

Also, the plugs are not exactly easy to get out, so do it once and do it well.

g'day
Hope your swap goes as easy as mine
I have run Nipondenso (VK16 from memory-don't trust that though!) in mine around Aust in the old Pajero motor, replaced them and the last 3000 on the Magna motor running almost always on gas, pulling hard and have no problems at all with them. I could have swapped them from the old motor but for around $100 and knowing how much of a pain it would be to change them later decided to do them while the engine was out.
Platinum, iradium or yttrium, these days you will only get good brands and all good plugs.
good luck
Tom
PS: I have got some shots of the mod I had to do for the cam sensor but can't post the pic links as I don't have 10 postings up yet.

well have ordered the plugs .. found em on ebay for NGK iridiums for $40 US dollars a set of 6 plus $18 air freight ..

I also got my plugs from USA - similar price and 1 week delivery. It is too late now, but you should try to get a set of plugs 1 grade colder than the recommended if you are runing on gas. From memory, this meant a higher number eg PFR6J instead of PFR5J or whatever. Do the research yourself. I approached NGK and Champion in Aust and Champion faxed me a list of recommended plugs for all vehicles running on gas. NGK didn't have any platinum plugs colder than the ones recommended for the petrol 3.5L engine, so I had to use them - hence I set them to 0.9 mm gap to allow for the gap to open up during service. Hopefully I will not see them again for 100000km (they have done 10000 km now and so far no problems)

Looks like the NGK's will go in the magna .. Father in law just arrived with water pump, timing belt and platinum plugs .. (has an auto parts business)