Spark Plugs

[gene]

I have just purchased a 1998, 4.5 liter Patrol and would like to know which Spark Plugs are recommended by the Forum.

[threedogs]

This info should be in the archives have a search and see what you come up with.
The intro apparently isnt compulsary but its appreciated being polite and all before asking questions

[mjr350]

NGK BPR5E-11

In my opinion don't bother with iridium or platnum plugs. They're only out there for engines that are hard to change plugs on or risk breaking expensive leads. My VY LS1 needs 100,000km iridium plugs only because changing standard plugs every 15,000km will most certainly lead to broken leads and the rear drivers side plugs are a nightmare to change. A spark is a spark.

[gene]

Thanks threedogs. Gene

[4bye4]

NGK BPR5E-11

In my opinion don't bother with iridium or platnum plugs. They're only out there for engines that are hard to change plugs on or risk breaking expensive leads. My VY LS1 needs 100,000km iridium plugs only because changing standard plugs every 15,000km will most certainly lead to broken leads and the rear drivers side plugs are a nightmare to change. A spark is a spark.

What he said times 2 NGK BPR5E-11

[jff45]

The '11' indicates that they are gapped to 1.1mm

[mjr350]

The '11' indicates that they are gapped to 1.1mm

That also doesn't mean you should rely on the factory setting. Always double check with a gauge. Ive pulled a plug out of the box once to find that it was almost closed up.

[jff45]

That also doesn't mean you should rely on the factory setting. Always double check with a gauge. Ive pulled a plug out of the box once to find that it was almost closed up.

And I've seen cases (yes, more than once) where even professional mechanics have hit the side of the plug hole and closed the gap..

Forgot to mention, I gap mine to 0.8..

[mjr350]

Is your reduced gap due to forced induction?

[jff45]

Is your reduced gap due to forced induction?

Impending forced induction..