NGK Iridiums. On the box it says do not adjust gap. From what I can remember the FSM says a 1989 22re should have the plugs gapped to .30-.32 and the NGK's I have are gapped at .34 (3 of them) and .35 (for the last one).

Am I actually not supposed to gap these? Will a little larger gap cause any issues? Is there a "magical" gap for the 22re that gives better detonation in the cylinder?

Thank you for the help.

 

I put those same plugs in without gapping them and they have been trouble-free for 30k so far.

The gap should be a function of voltage since the charge has to jump through that much air. So it would make sense to set it back to the correct gap since system voltage is the same. If you're not afraid of breaking them go ahead and set the gap, but I don't think the discrepancy will make much difference.

 

I always set mine at 38thousanths

 

The fact that not all of them are gapped the same and NONE of them are gapped correctly for the vehicle application!!!!!!!

 

the nkg plugs i put in a few weeks ago said on the package to set gap to engine specs.
and I did around 35-38 thousandth.

motor seemed to perk up a little after was probably more the affect of having new plugs more so then the right gap the ones i took out that had been put in by the p/o where at the out of the package gap still. and pretty blackened. and dirty. ill see how mine are in a few weeks,

 

Rustbucket is correct, the reason it says not to gap them is because they are easy to break. However as long as you don't touch the center electrode you should be fine. Look here: http://sparkplugs.com/faqmain.asp for information on proper gapping technique.

 

Thanks!

 

This is old! But I'm new! Toyota mdt Tech gave a definitive answer here (https://www.yotatech.com/forums/f16/...ions-22re-970/) , but for the rest of us...

You should at least check when taking them out of the box.. 99% of the time they will be correct BUT if the ground gets bent in the package which can and does happen, then it might be something you will be chasing your tail trying to fix. (example, after a front and top end rebuild this winter with new plugs, wires, rotors... had some hesitation and strange running after setting timing correctly.. Checked spark plugs which I had NOT gapped out of the box. Guess what, it was at .029 and the rest at .032) Takes a few minutes max. NGK BP5REY-.032, DENSO W16EXRU-.035 is what you need/ should be using.
NO, you don't need platinum or iridium plugs, Copper works great for your engine, especially with stock ignition systems.
2 cents