NA-T Sparkplug info...

Reply Subscribe

Thread Tools

Search this Thread

Apr 12, 2007 | 11:37 AM

GSoup

Thread Starter

Lexus Fanatic

Joined: Sep 2005

Posts: 5,095

Likes: 9

From: The Rotten Apple

NA-T Sparkplug info...

This is for tthose that are FI. Just curious to know, what plugs everyone else are running with and at what gap?

I'm running NGK 6097

oops i forgot their gapped at 26

Last edited by GSoup; Apr 12, 2007 at 06:59 PM.

Apr 12, 2007 | 02:09 PM

Kharizma

Lexus Champion

iTrader: (6)

Joined: Sep 2004

Posts: 1,942

Likes: 0

From: Colorado

i'm going to put NGK Iridium IX's in mine next week when i get tuned and everything. not sure about the gap though.

Apr 12, 2007 | 06:31 PM

BurgandyGS

Pole Position

Joined: Mar 2005

Posts: 213

Likes: 0

From: FL

NGK R5671A-8 V-Power Racing 22 gap

Apr 12, 2007 | 07:18 PM

GSoup

Thread Starter

Lexus Fanatic

Joined: Sep 2005

Posts: 5,095

Likes: 9

From: The Rotten Apple

Quote:

Originally Posted by BurgandyGS

NGK R5671A-8 V-Power Racing 22 gap

How are those? Those are 4554, those are 2 steps colder right?

Apr 12, 2007 | 09:16 PM

JeffTsai

Lexus Fanatic

iTrader: (1)

Joined: Aug 2005

Posts: 5,392

Likes: 44

From: DFW area TX

I just put in some NGK 3330 plugs. Works ok so far.

Apr 13, 2007 | 08:46 AM

JPI Racing

Lexus Champion

Joined: Jun 2003

Posts: 2,079

Likes: 2

From: Texas

NGK 3330 with the 7 heat range. Work very well with the boosted car and they are cheap $1.29 per plug.
JPI

Apr 14, 2007 | 06:34 PM

BurgandyGS

Pole Position

Joined: Mar 2005

Posts: 213

Likes: 0

From: FL

Quote:

Originally Posted by GSoup

How are those? Those are 4554, those are 2 steps colder right?

They are number 8. Very cold plugs. They suck on mornings when it's in the 50's. They are only like 2 dollars a plug but I have to change them a lot. I want some iridiums. Do you know of a good one? I'm running like 20lbs.

Trending Topics

2027 S Class or 7 Series?

44

1k
General Car Conversation - 2026 Part 1

2.3k

62.8k
Tesla Full Self Driving Thread

920

30.5k
The most important car of the last 75 years - documentary video by Jason...

26

654
A new facelift??

26

980

Apr 14, 2007 | 07:52 PM

JeffTsai

Lexus Fanatic

iTrader: (1)

Joined: Aug 2005

Posts: 5,392

Likes: 44

From: DFW area TX

Quote:

Originally Posted by JPI

NGK 3330 with the 7 heat range. Work very well with the boosted car and they are cheap $1.29 per plug.
JPI

Those are the exact plugs I'm using. My friend tells me that those plugs should be changed every 10k miles. It's a pain in the ***, but at least the plugs are cheap lol.

Apr 14, 2007 | 08:54 PM

GSoup

Thread Starter

Lexus Fanatic

Joined: Sep 2005

Posts: 5,095

Likes: 9

From: The Rotten Apple

Quote:

Originally Posted by BurgandyGS

I figured i would share this with everyone... some good info here.
http://www.mkivsupra.net/vbb/showthread.php?t=41927

Hope this helps

Quote:

Plug selection
Note - This selection list does not take Nitrous into account. If you have Nitrous go one grade colder than this table advises at your boost/performance level.

Normally Aspirated
NGK - Standard - BKR5ES-11 (2382) - gap 1.1mm
NGK - V-Power - BKR5EYA-11 (2526) - gap 1.1mm
NGK - G-Power Platinum - BKR5EGP (7090) - gap 1.1mm
NGK -Laser Platinum - BKR5EP-11 ( 3440) -gap 1.1mm
NGK -OE Laser Iridium - IFR5T11 (4996) - gap 1.1mm
NGK - Iridium IX - BKR5EIX-11 (5464) - gap 1.1mm
Denso Platinum - PK16R11 - gap 1.1mm

Stock TT
NGK - BCPR6EP-11 - gap to 1.1mm PLATINUM
NGK - BKR6E (2756) - gap 1.1mm
NGK Iridium - BKR6EIX-11 (3764) leave gap alone
Denso Platinum - PK20R11 - gap 1.1mm
Denso Iridium - IK20 - leave gap alone

TT @ upto 1bar
NGK - BCPR7ES (3330) - gap 0.9mm
NGK - BKR7E (6097) - gap 0.9mm
NGK - Iridium - BKR6EIX or BKR7EIX - leave gap alone
Denso Platinum - PK20R11 - gap 0.8mm
Denso Iridium - IK22 - leave gap alone

TT/hybrids @ upto 1.3bar
NGK - BCPR7ES (3330) - gap 0.7mm
NGK - BKR7E (6097) - gap 0.7mm
NGK - BKR8E - gap to 0.7mm
NGK - BCPR8ES (3330) - gap 0.7mm
NGK Iridium - BKR7EIX - leave gap alone
NGK Iridium - BKR8EIX - leave gap alone
Denso Platinum - PK20R8 - gap 0.7mm
Denso Iridium - IK22 - leave gap alone
Denso Iridium - IK24 - leave gap alone

Single Turbo/Big Twins @ upto 1.3bar
NGK - BCPR7ES (3330) - gap 0.7mm
NGK - BKR7E (6097) - gap 0.7mm
NGK - BKR8E - gap to 0.7mm
NGK Iridium - BKR8EIX - leave gap alone
Denso Iridium - IK24 - leave gap alone

Single Turbo/Big Twins @ upto 1.8bar
NGK - BCPR8ES - gap 0.6-0.7mm
NGK - BKR8E - gap 0.6-0.7mm
NGK Iridium - BKR8EIX - leave gap alone
Denso Iridium - IK27 - leave gap alone

Single Turbo/Big Twins @ 2+bar
NGK - BCPR8ES - gap 0.6mm ??? UNTESTED
NGK - BKR8E - gap 0.6mm ??? UNTESTED
NGK Iridium - BKR8EIX or BKR9EIX? - leave gap alone ??? UNTESTED
Denso Iridium - IK27 to IK31 - leave gap alone ??? UNTESTED

Information sources
Denso
NGK
Sparkplugs.co.uk
Personal experience
Previous discussions on this and other BBS's.

-Alex

__________________

Last edited by GSoup; Apr 14, 2007 at 09:08 PM.

Feb 16, 2009 | 10:27 AM

#10

jcat_350

Lexus Champion

Joined: May 2008

Posts: 3,347

Likes: 6

From: RI

so if i'm going to be NA-T soon, running 8psi for a little while then running up to about 14psi, im guessing i should use the bkr7e iridiums? or is that too much?