spark plug?

[MA70-3.0GT]

I'd never heard of plug indexing until this thread, suppose it's not a bad idea on assymetrical chambers but like knuckles said, not much use on a Supra or similar pent-roof designs.

Just as a side note on torquing spark plugs. I've never torqued a washer type spark plug, simply going with the advice on the box (tapered plugs are a different matter & correct torque can make the difference between getting old plugs out or them snapping).

Generally when re-using an old washer type plug I don't even follow the advice & simply tighten by hand & then nip up with one of the old bendy "T" bar plug wrenches, never had one come loose or leak yet & never had to worry about snapping them come removal time.

I don't know what Toyota's torque reccomendation is, but I'd wager it's way more than is really needed to do the job... Unlike their head torques