Originally Posted by os4car (Post 1576780197)

guys i am changing my spark plug.

i have a c6 ls2 with a aa kit and methanol putting out 600rwhp.

the car is also a daily driver.

please recommend the best plugs for my application.

i was going to go with then (ngk br7efs)

thank you for the advice

Originally Posted by eboggs_jkvl (Post 1576780418)

Not to start a thread war or anything but before you lock in on the TR6, you might search the forum for threads on voltage/Alternator issues with the TR6. I had the TR6 initially and after reading the threads on the problems people were having, I changed to the ZR1 stock plug.

For example... http://forums.corvetteforum.com/c6-f...age+alternator

Just saying....

Elmer

Originally Posted by Skunkworks (Post 1574938054)

I'm not sure I'd buy into above link...

Ok some basics "Ohm's Law", as resistance (measured in ohms) goes down, current (amps) go up, if voltage from coil stays the same. I = V/R, I is current (amps), V is Voltage (volts), R is resistance (ohms).

Why is this important, with FI we run a diminished/reduced gap on plugs... as gap is reduced so is resistance thus an increase in current... In the summer I think most C6 charging systems are on ragged edge (cooling fan running 90+% duty cycle, ac clutch ON, interior fan blowing...), then add in some copper and semiconductor losses (both go up with temperature) so seeing low voltage at idle is common especially with heat soaked engine bay.

I'd start by checking all grounds, because on my previous C5 I had issues on new car (not modded yet) and dealership couldn't find fault... well I found it and it was main lug under battery, but not before dealership replaced both battery and alternator. Excessive noise (back EMF) is usually a bad ground on cars.

Not sure what's going on with your plugs, but what gap are you running or is the gap closing? A higher current alternator will have better idle characteristics, how much additional load have you added?

That's my .02, but suspect root cause is not plug type.

:cheers:
Mike

Originally Posted by TRINIC5 (Post 1576780524)

Then you should tell him to read this properly because I have ben using TR6 since 2000 in my boosted application and never had an issue, both cars use the same spark plugs and I don't think I ever saw a problem as spinmonster had seen, but this statement make more sense.....Read this

Originally Posted by eboggs_jkvl (Post 1576780629)

Yep, read all of that, more than once actually. Your 2000, what engine? I had a twin turboed 98 camaro, it is still in this world, runs TR6 plugs and it's great. It has 730 RWHP on a LS6 engine. Not a whisper of a problem. TR6s work perfect in the setup.

I just went through a battery issue and have seen first hand how sensitive my 2007 electrical system is to the slightest voltage fluctuation.

He can read the thread and make his own decision.:cheers:

Elmer

Originally Posted by eboggs_jkvl (Post 1576780418)

Not to start a thread war or anything but before you lock in on the TR6, you might search the forum for threads on voltage/Alternator issues with the TR6. I had the TR6 initially and after reading the threads on the problems people were having, I changed to the ZR1 stock plug.

For example... http://forums.corvetteforum.com/c6-f...age+alternator

Just saying....

Elmer

Originally Posted by 95vettski (Post 1576781242)

I would suggest the BRE7EF plug at over 700rwhp. For your combo the TR6 is the plug of choice.:thumbs:

Originally Posted by eboggs_jkvl (Post 1576780232)

I'd use the plug for the LS9. That's what I'm running.

.040 AC 41-104


Elmer

Originally Posted by LT1GMC (Post 1576794102)

Is that plug just a bit colder than the stock plug? I am sure the TR6 is a great plug, but I would like the longevity of the iridium stock plug, in a colder version for the supercharger.

Originally Posted by Beatitt (Post 1576788572)

TR6-ers, gap at .035, change every 10K.

Originally Posted by Rock'n Blue 08 (Post 1576781399)

I have used tons of TR-6's! I think the issues are other causes. Use the Tr-6's Just saying!