Denso Iridium spark plug gapping
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Denso Iridium spark plug gapping
Ok everyone i jsut bought a set of Denso Iridium spark plugs they are pregapped at .044. I read that the 350z spark plug gap is .043 is this true. I just want to make sure I gap my plugs correctly.
Thanks Glen
Thanks Glen
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http://densoiridium.com/installationguide.php
Here you go!
The proper spark plug(iridiums especially) gap measuring tool is feeler guages
Do not use this!
Here you go!
The proper spark plug(iridiums especially) gap measuring tool is feeler guages
Do not use this!
Last edited by screener; 04-16-2006 at 03:23 PM.
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The largest NGK plug distributor in the country prints "DO NOT GAP IRIDIUM PLUGS" on all of their invoices. We have had iridium tips fall off on supras becasue they were gapped.
Last edited by dynamic6er; 04-18-2006 at 05:21 AM.
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Originally Posted by dynamic6er
The largest NGK plug distributor in the country prints "DO NOT GAP IRIDIUM PLUGS" We have had iridium tips fall off on supras becasue they were gapped.
Some of you will not agree with my post and your opinion is just as important as mine,but we are talking about Denso Iridiums in this thread.If you can show me something from Denso stating not to gap their iridium spark plugs please post it.Other than that its false info your passing on to lots of people.
Eric
Last edited by screener; 04-17-2006 at 04:24 PM.
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good response
that being said, leave them alone
I've gapped Denso iridums a million times...I have never ever ever ever had a tip break. If I were a distributor, I would tell people not to gap either...who wants to deal with calls from yahoos who fancied themselves "tooners" and starting playing with things. On the other hand, try running that gap on a big boost car and see what happens.
YES they can be gapped....for this instance, the preset gap is more than fine - just double check them before they go in to ensure gap is within .01 of each other
that being said, leave them alone
I've gapped Denso iridums a million times...I have never ever ever ever had a tip break. If I were a distributor, I would tell people not to gap either...who wants to deal with calls from yahoos who fancied themselves "tooners" and starting playing with things. On the other hand, try running that gap on a big boost car and see what happens.
YES they can be gapped....for this instance, the preset gap is more than fine - just double check them before they go in to ensure gap is within .01 of each other
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The iridium electrode is so brittle that even lightly touching it can break it or weaken it. So--with a feeler gauge you can't really get an accurate gap without doing damage. Trust me--I broke 3 electrodes a year ago and one of the ones that didn't break actually broke off in use. This year, they went in as is and the engine is running better than ever.
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Originally Posted by Zmego1985
I wont break it just testing the gap with a feeler gauge will I?
The values of iridium look great it's the hardness value that makes it easy to snap if not carefull.One simple drag from a feeler guage could cause a vibration that snaps or cracks the fine iridium electrode.Just make sure they are within .01 of each other and install those suckers.Your still N/A correct,if so do not mess with the gaps if you do not have to like Z1 Performance recommended.
Last edited by screener; 04-17-2006 at 08:29 PM.
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Here is a tip. When I changed mine out I had one 1 that was off. I checked the gap prior to install, put little piece of paper towel in the socket then it will hold the plug in place so you dont bump it against anything , because if you hit it on something when you install your gap will be off. It worked like a charm. paper towel has many uses.
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Gapping
Always check plug gap, regap if needed. Always use proper techniques for type of plug being installed. A quality spark plug socket comes with a rubber tube inside to grip metal end of plug...many remove it for whatever reason resulting in damaged plug when reinstalling. Leave te tube where it is. ...plug wont fall off...simple.
#20
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Always check plug gap, regap if needed. Always use proper techniques for type of plug being installed. A quality spark plug socket comes with a rubber tube inside to grip metal end of plug...many remove it for whatever reason resulting in damaged plug when reinstalling. Leave te tube where it is. ...plug wont fall off...simple.