TR6 plugs Vs stock C6 ZO6 plugs questions please.
01-17-2019, 05:06 PM
#21
Racer
Thread Starter
Finally! someone else who knows about ignition. I've grown tired of explaining copper plugs are junk and there is no reason to switch from a good iridium. Iridium are superior in every way and the stock DENSO units are high quality stuff. If a colder heat range is needed go to a LS7/LS9/LSA plug. I've worked the last 10 years in plug development and application work for GM small blocks, OEM parts are the way to go.
To the OP, there should be no reason why switching back to stock plugs would make the car run poorly. Unless air gap is wayyyyy out of check.
To the OP, there should be no reason why switching back to stock plugs would make the car run poorly. Unless air gap is wayyyyy out of check.
01-17-2019, 05:13 PM
#22
Race Director
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I set my TR6s at .035"
01-17-2019, 05:27 PM
#23
Le Mans Master
Unless you're on the ragged edge, anything between .030 and .045 will work just fine. Seems like every plug I've checked on an LS motor has been between .035 and .040. That includes stock a/c delco and NGK stuff.
01-17-2019, 06:04 PM
#24
Racer
Thread Starter
Just checked the 41-104s. set at .036. I set the new TR6s at .035.
This is turning into a real mystery. I really am at a loss, as to why this happened. And believe me I am as puzzled, as anyone at this point. Come on guys. There are some real intelligent people on here. What was going on????????????
01-17-2019, 07:39 PM
#25
Le Mans Master
Just checked the 41-104s. set at .036. I set the new TR6s at .035.
This is turning into a real mystery. I really am at a loss, as to why this happened. And believe me I am as puzzled, as anyone at this point. Come on guys. There are some real intelligent people on here. What was going on????????????
This is turning into a real mystery. I really am at a loss, as to why this happened. And believe me I am as puzzled, as anyone at this point. Come on guys. There are some real intelligent people on here. What was going on????????????
01-18-2019, 04:38 PM
#26
Drifting
Just checked the 41-104s. set at .036. I set the new TR6s at .035.
This is turning into a real mystery. I really am at a loss, as to why this happened. And believe me I am as puzzled, as anyone at this point. Come on guys. There are some real intelligent people on here. What was going on????????????
This is turning into a real mystery. I really am at a loss, as to why this happened. And believe me I am as puzzled, as anyone at this point. Come on guys. There are some real intelligent people on here. What was going on????????????
It's possible there something structurally wrong with one of the plugs or maybe they are fouled and it's not easily seen. Could have been dropped, void in the ceramic, production issue, etc.
Measure resistance between the center electrode and top terminal/t-post, should be in the 2-10kohm range or at least all similar values. If you have access to a high voltage megohmeter, insulation resistance can be measured between the terminal/t-post and threaded housing. Should be infinite.
If there is an ceramic void issue you'll never know without a SEM analysis so you'll just have to buy new ones. Good luck.