Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
Bigwormgraphix
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons


Reply
 
Thread Tools
Old 11-27-2020, 06:51 AM   #1
Camaro227
 
Camaro227's Avatar
 
Drives: Toyota Puris
Join Date: Oct 2020
Location: Alaska
Posts: 35
TR5 vs TR6 Plugs

Hi all,

Should I go with the NGK TR5 Or the TR6?

Stock L99

Thanks
Camaro227 is offline   Reply With Quote
Old 11-27-2020, 07:07 AM   #2
CamaroCracka

 
CamaroCracka's Avatar
 
Drives: 2010 Turbo LS3
Join Date: Dec 2009
Location: Palm Bay, FL
Posts: 1,805
TR5
If you had forced induction or a big cam, TR6
__________________
On3 kit with downpipe cutout, CTR 76/75, CompCam 239/251 620/632 122+4, and meth. 712whp@5790 717tq@4450 w/15psi boost. Z28 suspension.
CamaroCracka is offline   Reply With Quote
Old 11-27-2020, 09:26 AM   #3
sixty9fordkiller
Donkey Dick Cam Camaro
 
sixty9fordkiller's Avatar
 
Drives: 2010 2SS/RS LS3 M6
Join Date: Oct 2009
Location: Los Angeles, CA
Posts: 1,981
TR5. You will lose power on a stock car if you go with TR6

Sent from my SM-G975U using Tapatalk
__________________

Bone Stock
sixty9fordkiller is offline   Reply With Quote
Old 11-27-2020, 09:27 AM   #4
Camaro227
 
Camaro227's Avatar
 
Drives: Toyota Puris
Join Date: Oct 2020
Location: Alaska
Posts: 35
Thank you all for the information! ��
Camaro227 is offline   Reply With Quote
Old 11-27-2020, 01:39 PM   #5
InFiD3ViL


 
InFiD3ViL's Avatar
 
Drives: 2010 CGM 2SS/RS LS3 Swapped A6
Join Date: Sep 2016
Location: Spring Hill, FL
Posts: 4,097
With NGK, the lower the plug number, the hotter the plug. Higher the number, the colder.

Per NGK: An unaltered engine will run within the optimum operating range straight from the manufacturer, but if you make modifications such as adding a turbo or supercharger, increasing compression, timing changes, use of alternate fuels, or sustained use of nitrous oxide, these can alter the plug tip temperature, necessitating a colder plug

The OEM Delco plugs on our v8 cars are generally considered to be in the '5' heat range, when compared to NGK. But per NGK themselves, 'The heat range numbering system used by spark plug manufacturers is not universal.'

NGK also says 'A good rule of thumb is, one heat range colder for every 75–100hp added' - of course this isn't a concrete rule, just a rule of thumb as they explain. Datalogs would need to be examined and compared to truly determine if changing to a colder/warmer plug is beneficial and when it's most efficient/safe. But for me, my previous tuner DynoSteve recommended I move to a colder plug, the NGK TR6IX specifically, after I went with headers, catless, CAI, throttle body, and his tune. After I went with a cam, had my heads milled, and a more targeted tune for those mods, my current tuner said I would be perfectly fine to stay with the TR6IX's.

So based on the fact that you are stock and also running the stock tune, you may run into plug fouling issues if unnecessarily running a colder plug, since the plugs likely won't be able to get hot enough with the current stock timing and fueling settings to self clean. This may also lead to inefficient/partial combustion.

Sorry to make this so long, but it figure it is best to also try to explain the 'whys' rather than just tell someone what is best.

NGK has a decent short explanation on their website at this link, which is where this info comes from: https://www.ngk.com/what-is-a-spark-plugs-heat-range-2
__________________
2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP long tube headers (W/Catless Off-road Pipes), FlowMaster Outlaw axle back/X-Pipe, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), Firestone Firehawk Indy 500s - Tuned by Ryan @ GPI via HP Tuners
InFiD3ViL is offline   Reply With Quote
Old 11-28-2020, 09:33 AM   #6
1JEWLDSSRS


 
1JEWLDSSRS's Avatar
 
Drives: 2011 SS-RS
Join Date: May 2011
Location: FLORIDA
Posts: 4,675
Quote:
Originally Posted by InFiD3ViL View Post
With NGK, the lower the plug number, the hotter the plug. Higher the number, the colder.

Per NGK: An unaltered engine will run within the optimum operating range straight from the manufacturer, but if you make modifications such as adding a turbo or supercharger, increasing compression, timing changes, use of alternate fuels, or sustained use of nitrous oxide, these can alter the plug tip temperature, necessitating a colder plug

The OEM Delco plugs on our v8 cars are generally considered to be in the '5' heat range, when compared to NGK. But per NGK themselves, 'The heat range numbering system used by spark plug manufacturers is not universal.'

NGK also says 'A good rule of thumb is, one heat range colder for every 75–100hp added' - of course this isn't a concrete rule, just a rule of thumb as they explain. Datalogs would need to be examined and compared to truly determine if changing to a colder/warmer plug is beneficial and when it's most efficient/safe. But for me, my previous tuner DynoSteve recommended I move to a colder plug, the NGK TR6IX specifically, after I went with headers, catless, CAI, throttle body, and his tune. After I went with a cam, had my heads milled, and a more targeted tune for those mods, my current tuner said I would be perfectly fine to stay with the TR6IX's.

So based on the fact that you are stock and also running the stock tune, you may run into plug fouling issues if unnecessarily running a colder plug, since the plugs likely won't be able to get hot enough with the current stock timing and fueling settings to self clean. This may also lead to inefficient/partial combustion.

Sorry to make this so long, but it figure it is best to also try to explain the 'whys' rather than just tell someone what is best.

NGK has a decent short explanation on their website at this link, which is where this info comes from: https://www.ngk.com/what-is-a-spark-plugs-heat-range-2
Bro I gotta tell ya, you always seem to have some of the MOST awesome info out there for the Camaro community!! And I as well of the others, thank you for your info and desire to share and help. Thanks...
__________________
TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWTQ/475RWHP.LOTS MORE.
1JEWLDSSRS is offline   Reply With Quote
Old 11-28-2020, 09:51 AM   #7
Chris49066SS

 
Chris49066SS's Avatar
 
Drives: 2010 SS L99
Join Date: Sep 2018
Location: TN
Posts: 1,507
Quote:
Originally Posted by 1JEWLDSSRS View Post
Bro I gotta tell ya, you always seem to have some of the MOST awesome info out there for the Camaro community!! And I as well of the others, thank you for your info and desire to share and help. Thanks...
Agreed. He is always super helpful
__________________
11.079 @ 122.99mph
The 11.079 pass: https://youtu.be/pz27Zq54t_E
Build thread - www.camaro5.com/forums/showthread.php?t=555371
Chris49066SS is offline   Reply With Quote
Old 11-28-2020, 04:59 PM   #8
InFiD3ViL


 
InFiD3ViL's Avatar
 
Drives: 2010 CGM 2SS/RS LS3 Swapped A6
Join Date: Sep 2016
Location: Spring Hill, FL
Posts: 4,097
Hey thanks fellers. I don't pretend to know everything and am always learning from the smart guys here, but I do like to share what I do know or at the least to try and help someone find an answer.

We gotta do what we can to keep this site alive, and the only way to do it is to keep people feeling that it has value.
__________________
2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP long tube headers (W/Catless Off-road Pipes), FlowMaster Outlaw axle back/X-Pipe, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), Firestone Firehawk Indy 500s - Tuned by Ryan @ GPI via HP Tuners
InFiD3ViL is offline   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 04:06 AM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.