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NGK TR55 vs TR6's ?

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Old Nov 15, 2009 | 09:47 AM
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Default NGK TR55 vs TR6's ?
Anyone have any input as to why the colder TR6's should benefit over stock replacement TR55's. I'm running stock heads & cam, ls6 intake, 85mm BBK TB, Jet hot long tubes, LS1 edit, MSD coils & wires, 3000 Vigilante, shift kit, 3.73 gears and suspension stuff. Runs 12.30's at 110.00. Developed knock sensor code and misfire ( don't wash your ls1 engines with water guys ) so had to pull the manifold, front KS rusty and corroded !
Long story, but looking for the misfire, my tuner put TR6's in it and I wanna go back to the hotter plugs..............Any thoughts?

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Old Nov 15, 2009 | 10:27 AM
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If your tuner knows the MSD coils well he could have optimized the dwell tables for the TR6s. Unlikely but possible.
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Old Nov 15, 2009 | 10:38 AM
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Originally Posted by KCFormula
If your tuner knows the MSD coils well he could have optimized the dwell tables for the TR6s. Unlikely but possible.
Good thought, but I didn't have the MSD's on when I did the edit, one of the stock coils took a dump after the tune and I replaced them all with the MSD's.
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Old Nov 15, 2009 | 10:40 AM
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colder plug will foul quicker
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Old Nov 15, 2009 | 10:50 AM
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^^ I agree

tr-55=NA
tr-6=spray

generally speaking of course
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Old Nov 15, 2009 | 03:21 PM
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Originally Posted by 01ssreda4
^^ I agree

tr-55=NA
tr-6=spray

generally speaking of course
Thank you All !
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Old Nov 15, 2009 | 10:58 PM
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Originally Posted by 01ssreda4
^^ I agree

tr-55=NA
tr-6=spray

generally speaking of course
Does this hold true w/ mild H/C setups as well? The car in question will have its 806's ported soon on top of a 219/230 607/.604 117 lsa cam.
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Old Nov 16, 2009 | 01:17 AM
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Originally Posted by LT1T/A
Does this hold true w/ mild H/C setups as well? The car in question will have its 806's ported soon on top of a 219/230 607/.604 117 lsa cam.
A very loose rule of thumb is for ever 100hp you add over stock you should go 1 heat range colder with the plug. Thats a very loose rule and can differ with every application.
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Old Nov 16, 2009 | 09:36 PM
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maybe it already was impiled but why did you/he install the tr6s?
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Old Nov 17, 2009 | 09:40 AM
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Originally Posted by 01ssreda4
^^ I agree

tr-55=NA
tr-6=spray

generally speaking of course
I agree, that's the general rule. I've heard of going to the TR55IX which are the irridiums but not the TR6's.
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Old Nov 17, 2009 | 07:00 PM
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Originally Posted by MJs1FastSS
maybe it already was impiled but why did you/he install the tr6s?
My tuner installed them when he did the LS1 edit, I don't know why, I've replaced them with TR55GP's
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Old Nov 17, 2009 | 07:38 PM
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Originally Posted by alank1953
My tuner installed them when he did the LS1 edit, I don't know why, I've replaced them with TR55GP's
What's the difference beween the regular TR55's and the GP's?
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Old Nov 17, 2009 | 07:57 PM
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Originally Posted by Skidog5150
What's the difference beween the regular TR55's and the GP's?
GP's are Platinum, for only a buck more than the regular 55's
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Old Nov 17, 2009 | 09:54 PM
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Originally Posted by alank1953
GP's are Platinum, for only a buck more than the regular 55's
Gotch ya. Thanks..
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