spark plug?

MA70-3.0GT · 12-06-2009, 02:53 PM

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

12-06-2009, 02:53 PM	#5
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	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 __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!!