Iridium plugs?
Iridium plugs? I have TR55 Iridium plugs in the car right now, I will be spraying a 100 dry shot on the dyno this Sat - will the plugs I have be fine, or do I really need to try and put TR6s in? TIA
I would go with the TR6 Iridium equivlents. They idle better then the TR6 and last longer, just cooler then you TR55. I would NOT run the TR55 unless others have done this with success. Iridium won't be the problem , just the heat range.
If you are asking about Iridium plugs with nitrous my experiencewith them has been bad using nitrous. I used the NGK TR6IX and decided after misfiring and a cracked insulator to go back to plain old NGK TR6 plugs. I have had very good luck this way.
Originally Posted by Macon
If you are asking about Iridium plugs with nitrous my experiencewith them has been bad using nitrous. I used the NGK TR6IX and decided after misfiring and a cracked insulator to go back to plain old NGK TR6 plugs. I have had very good luck this way.
Originally Posted by Airwolf
That's odd. I have been using Denso for over 6 months and my friend (02 Pewter LS1) has been using the NGK iridium for even longer without trouble. I wonder what made yours have issues? Looking at the two plugs they seem very similar with the iridium having the much better tip as far as life is concerned. Even my idle was better with the iridium over the TR6 regular. Anyone have any ideas on the reason for the failure?
Originally Posted by Airwolf
That's odd. I have been using Denso for over 6 months and my friend (02 Pewter LS1) has been using the NGK iridium for even longer without trouble. I wonder what made yours have issues? Looking at the two plugs they seem very similar with the iridium having the much better tip as far as life is concerned. Even my idle was better with the iridium over the TR6 regular. Anyone have any ideas on the reason for the failure?
Mike
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One of the problems with forums like these is that the answers you get are going to be inconclusive. You should try iridium plugs, knuder valves whatever...if they work for you great. If not go back to what works for you or try something different.
Good luck.
---Macon
Good luck.
---Macon
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Originally Posted by The Sad
Well, I sprayed it today with the iridium. For future reference for someone else, I didn't have any problems.
Brad8266 is correct.
I agree with the heat range being more important then the type of plug.
Why take the risk of using the wrong heat range and doing damage to the engine when under $20 for TR6's is very cheap insurance. Don't be fooled by doing something once that it will always work. I did plenty of research before moving to Iridium, but going to a cooler heat range was always the most important point.
I agree with the heat range being more important then the type of plug.
Why take the risk of using the wrong heat range and doing damage to the engine when under $20 for TR6's is very cheap insurance. Don't be fooled by doing something once that it will always work. I did plenty of research before moving to Iridium, but going to a cooler heat range was always the most important point.
