What spark plugs should I use for my SR20-DET?

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bagnasco
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What spark plugs should I use for my SR20-DET?

Postby bagnasco » Sat Jul 05, 2008 10:04 am

I want to upgrade my sparkplugs. I've been looking at Bosch Platinum +2. But I started talking to friends and they told me to buy the NGK Iridium IX.

What does everyone else think? Bosch Platinums? NGK Iridiums? Or something else?


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kentuckyslider
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Re: What spark plugs should I use for my SR20-DET? (bagnasco)

Postby kentuckyslider » Sat Jul 05, 2008 12:04 pm

BKR7EIX NGk's if you are making less than 300whp, BKR8's if you are making 300-400whp and 15-20psi of boost, BKR9's if you are running over 20psi and more than 400whp. I run 8 heat range year round and have no problem.

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Postby S14toRPS13 » Sat Jul 05, 2008 3:38 pm

Go with NGK. I believe most people do. I'm running about 18 psi on mine right now and I'm using BKR8's also.

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Re: What spark plugs should I use for my SR20-DET? (bagnasco)

Postby vocationalzero » Sat Jul 05, 2008 8:18 pm

Bosch plugs really only work well in german cars. Well,l atleast work the best from what I've seen.

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Re: What spark plugs should I use for my SR20-DET? (vocationalzero)

Postby Kalypso » Sun Jul 06, 2008 2:52 am

ngk iridium

( though race teams use copper plugs all day )

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PyR0NiAk
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Re: What spark plugs should I use for my SR20-DET? (kentuckyslider)

Postby PyR0NiAk » Sat Mar 28, 2009 7:14 am

kentuckyslider wrote:BKR7EIX NGk's if you are making less than 300whp, BKR8's if you are making 300-400whp and 15-20psi of boost, BKR9's if you are running over 20psi and more than 400whp. I run 8 heat range year round and have no problem.
240SXMOTORING.COM wrote:NGK Iridium IX Plug BKR8EIX *set of 4* - high HP applications

Set of 4,

2 steps colder spark plugs for SR20DET, KA24DE, CA18, all RB motors.

These are not recommended for daily use.

Use for High Horsepower cars that either run lots of boost or lots of timing!!!!

Helps lower combustion Temps.
So you're saying that if it's over 300hp then you should use 8s but 240sxmotoring.com states that they shouldn't be used for daily use.

*sorry for bumping an old thread...

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PyR0NiAk
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Re: What spark plugs should I use for my SR20-DET? (PyR0NiAk)

Postby PyR0NiAk » Sat Mar 28, 2009 7:17 pm

this question is bugging me... someone please answer???

S14toRPS13
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Re: What spark plugs should I use for my SR20-DET? (PyR0NiAk)

Postby S14toRPS13 » Sat Mar 28, 2009 7:36 pm

PyR0NiAk wrote:
So you're saying that if it's over 300hp then you should use 8s but 240sxmotoring.com states that they shouldn't be used for daily use.

*sorry for bumping an old thread...
It's fine. I normally just warm my car up for about 5 minutes before I drive if it's been driving for a long time. You can't just jump in and drive off like what a lot of people do in the mornings.

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Koshin
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Re: What spark plugs should I use for my SR20-DET? (S14toRPS13)

Postby Koshin » Sat Mar 28, 2009 9:42 pm

dont use any spark plugs

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PyR0NiAk
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Re: What spark plugs should I use for my SR20-DET? (91SilviaKs)

Postby PyR0NiAk » Sun Mar 29, 2009 1:42 am

91SilviaKs wrote:dont use any spark plugs
AWESOME IDEA!!! I'll do it!!

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tunermt
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Re: What spark plugs should I use for my SR20-DET?

Postby tunermt » Wed Jul 20, 2022 2:01 am

Stumbled on this old thread while searching for SR20det Iridium plugs and thought i'd share a little guide for other SR20det owners in need of upgraded plugs/coils or anyone dealing with spark blow out. https://ffrides.com/sr20det-ngk-iridium-spark-plugs/

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tunermt
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Re: What spark plugs should I use for my SR20-DET?

Postby tunermt » Mon Jul 25, 2022 4:51 am

I personally run the bkr7eix-11 in my s14 Sr20det on e85 and 19psi. (R35 coils)

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tunermt
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Re: What spark plugs should I use for my SR20-DET?

Postby tunermt » Wed Sep 28, 2022 7:42 pm

OEM heat range:
Iridium core BKR6eix spark plugs
Copper core BKR6e spark plugs

1 step colder (common for modified SR20det 350-450hp range)
Iridium core BKR7eix
Copper core BKR7e

Expanding on my last post:
"I run BKR7eix in my personal SR20det (16G turbo, 19psi on E85)" The iridium core plugs work great and last 3-4 times as long as the copper core plugs. (i've also ran BKR6E, BKR7E and BKR8E) but prefer the iridium core as the copper cores just don't last long before they suffer from spark blowout. Nothing worse than not being able to run full boost because you're blowing out spark!!!
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