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Old 02-13-2011, 10:29 AM   #1
os4car
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Default best spark plug for FI c6 ls2 ????

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
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Old 02-13-2011, 10:31 AM   #2
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Quote:
Originally Posted by os4car View Post
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
NGK TR6's are what you need, I don't think there are anything else recomended.
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Old 02-13-2011, 10:32 AM   #3
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I'd use the plug for the LS9. That's what I'm running.

.040 AC 41-104


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Old 02-13-2011, 10:42 AM   #4
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Tr6
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Old 02-13-2011, 10:54 AM   #5
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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
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Old 02-13-2011, 11:02 AM   #6
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Quote:
Originally Posted by eboggs_jkvl View Post
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
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

Quote:
Originally Posted by Skunkworks View Post
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.


Mike
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Old 02-13-2011, 11:13 AM   #7
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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

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.

Elmer
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Old 02-13-2011, 11:18 AM   #8
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Quote:
Originally Posted by eboggs_jkvl View Post
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.

Elmer
I have a few cars, my 1997 F1R bosted use TR6'S and my 2008 F1A boosted use TR6's never had an issue, my friend twin turbo C6 with over 1000rwhp uses TR6's and as Frans96ss who build and out put an 8sec supercharged 2008 C6 Z06 and knows his work very well said the same, if you call Cartek they will say the same.
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Old 02-13-2011, 12:23 PM   #9
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I would suggest the BRE7EF plug at over 700rwhp. For your combo the TR6 is the plug of choice.
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Old 02-13-2011, 12:41 PM   #10
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Quote:
Originally Posted by eboggs_jkvl View Post
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
I have used tons of TR-6's! I think the issues are other causes. Use the Tr-6's Just saying!
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Old 02-13-2011, 01:47 PM   #11
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Quote:
Originally Posted by 95vettski View Post
I would suggest the BRE7EF plug at over 700rwhp. For your combo the TR6 is the plug of choice.
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Old 02-14-2011, 10:15 AM   #12
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TR6-ers, gap at .035, change every 10K.
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Old 02-14-2011, 08:52 PM   #13
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Quote:
Originally Posted by eboggs_jkvl View Post
I'd use the plug for the LS9. That's what I'm running.

.040 AC 41-104


Elmer
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.
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Old 02-14-2011, 11:09 PM   #14
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Quote:
Originally Posted by LT1GMC View Post
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.

It's a colder plug used in the LS9.

Elmer
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Old 02-16-2011, 02:27 PM   #15
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Quote:
Originally Posted by Beatitt View Post
TR6-ers, gap at .035, change every 10K.
They come factory set at .039. Which is where they work the best. if you add some MSD wires. Which allow you to run a wider plug gap than thje stock wires. I'd say more like 20K on the change also.
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Old 02-16-2011, 03:24 PM   #16
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You choose sparkplugs based an hp ratings. However since you are making 600rwhp a TR6 will be ok. Much more power than that you should go 1 step colder , and also go to a non-projected tip.

Chris
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Old 08-23-2011, 12:59 AM   #17
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Has anyone tried E3 spark plugs? The .53 is supposed to be comaparible to the TR6.

http://www.e3sparkplugs.com/
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Old 08-23-2011, 09:42 AM   #18
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Quote:
Originally Posted by Rock'n Blue 08 View Post
I have used tons of TR-6's! I think the issues are other causes. Use the Tr-6's Just saying!
That's what's in my 07 FI. No issues after 3k miles of use. I agree that the charging system is strained or inadequate at times when it's 95 degrees and your stuck in traffic with the cooling fans running 90% and the AC at max.

I have an A6 so I typically have to go into neutral and bring up the idle to 800-900 rpm from 650 rpm to keep the battery from draining below 12 vdc until we're finally moving again. Other than that situation, the charging system performs perfectly.
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Old 08-23-2011, 10:38 PM   #19
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Ls2 pro charged running tr6's..
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Old 08-24-2011, 12:19 PM   #20
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Almost everything that leaves here runs a TR6. I don't buy into the charging issues being caused by the plug. We have never come across that and we've built a lot of cars. They also need to be changed every 10k miles in a FI set up.
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Old 08-24-2011, 12:19 PM
 
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