New Zealand Datsun Club

What are the best plugs and leads to use on a L18 engine. Last time I bought some plugs for the L18 the guy selling them said you can't get anything real flash for them so just sold me a real cheap set, is this true or was he feeding me rubbish.
Is it any use spending big bucks on leads also

Cheers
Craig

definitly big leads and by flash plugs did he mean platinum plugs if so i cant see why not using them i have also always believed goin with hotter plugs when gettin heaps off fuel

Is it standard or worked?

If it's standard there is no real point in getting "flash" plugs, buy a decent set of leads and standard plugs and you'll be fine.

DJZ wrote:Is it standard or worked?

If it's standard there is no real point in getting "flash" plugs, buy a decent set of leads and standard plugs and you'll be fine.

Platinum, Iridium ect is a load of shitinum, Why you would replace a set of copper electrode plugs for these other metals defeats me, coppers the most conductive metal known to man isnt it? (besides silver but good luck finding a set of silver electrode plugs >< )

Copper is conductive, but also very soft. The other plugs are designed to last a lot longer, for cars that are not designed to be worked on. L Series, easy to work on, no need for expensive plugs. Just watch the heat range, too cold can foul and too hot can cause pre-detonation reducing the life of your motor. I've seen the wrong plugs destroy an engine. Spark plugs tell you a lot about your engine, a good set of NGK plugs and you can't go wrong!

DAT620 wrote:

DJZ wrote:Is it standard or worked?

If it's standard there is no real point in getting "flash" plugs, buy a decent set of leads and standard plugs and you'll be fine.

Platinum, Iridium ect is a load of shitinum, Why you would replace a set of copper electrode plugs for these other metals defeats me, coppers the most conductive metal known to man isnt it? (besides silver but good luck finding a set of silver electrode plugs >< )

Again, it depends on the motor. If you are running high compression or a turbo, I would use Iridium plugs. Conductivity isn't everything when it comes to a spark plug. If they made a fine point copper plug you could measure it's life in seconds I'd say.

It's not overly worked just a bit of head work, angry cam block shaved with flat top pistons etc. I'm sure the old bre cars didn't run fancy iridium plugs back in the day and they still went like the ducks nuts haha

Just last night I was reading a book by David Vizard about modifying the *cough* ford pinto engine *cough*. He's no mug by any stretch of the imagination. In this book he was saying that a whisker more power could be made by running plugs which were a tiny bit cooler. Certainly conventional wisdom dictates that turbo, supercharged, or nitrous motors often prefer at least one range cooler plug. What are your AFR's like Craig? If you're running rich, and don't often get to thrash your motor cooler plugs may lead to fouling. Are your carbs weber's or dellorto's? dellortos tend to atomise the fuel droplets slightly better, so I would sugggest that if using those cooler plugs would be more viable also.

Bartman wrote:Just last night I was reading a book by David Vizard about modifying the *cough* ford pinto engine *cough*. He's no mug by any stretch of the imagination. In this book he was saying that a whisker more power could be made by running plugs which were a tiny bit cooler. Certainly conventional wisdom dictates that turbo, supercharged, or nitrous motors often prefer at least one range cooler plug. What are your AFR's like Craig? If you're running rich, and don't often get to thrash your motor cooler plugs may lead to fouling. Are your carbs weber's or dellorto's? dellortos tend to atomise the fuel droplets slightly better, so I would sugggest that if using those cooler plugs would be more viable also.

Bart get with the 20th century, Lead fouling??? Haven't experienced that in nearly 20 years, (Thankfully). Are you letting some secrets out Bart!

May lead to fouling (As in the datsun takes the lead in a race)
And FWIW, I've experienced brand new plugs that after being drowned with fuel a couple of times were dead. they were so clean you could eat off them, but they couldn't sustain spark under load.
Another friend of mine had the same thing. Modern fuels are shite.