Which spark plug to use?

[supraman72]

Which spark plug does anyone recomend for our 7mgte's Pushing about 15psi boost that is. I have heard NGK are very good but which NGK plugs in specific?

 

[Kevin]

any . more $ more better. LOL
just make sure they are gapped to spec

 

[hvyman]

^not true. not all kinds of spark plugs are good for boosted motors. iirc coppers and iridium's are the only ones good for them.

i use ngk coppers which are about 2 bux a plug.

 

[supraman72]

^not true. not all kinds of spark plugs are good for boosted motors. iirc coppers and iridium's are the only ones good for them.

i use ngk coppers which are about 2 bux a plug.

Ok thanks thats what i was looking for, NGK coppers

 

[supraman72]

any . more $ more better. LOL
just make sure they are gapped to spec

do you know what spec should be for our engines?

 

[supraman72]

And what heat range should the coppers be rated for?

 

[Kevin]

i was joking about the more $ part.

im running ngk coppers but i dont remember the gap spec off the top of my head

honestly this stuff has been covered.

have you googled "ngk coppers heat range"?

did u look at the online tsrm?

 

[gaboonviper85]

any . more $ more better. LOL
just make sure they are gapped to spec

i was joking about the more $ part.

im running ngk coppers but i dont remember the gap spec off the top of my head

honestly this stuff has been covered.

have you googled "ngk coppers heat range"?

did u look at the online tsrm?

you really need to stop talking!

Stock heat range is #6

 

[supraman72]

i was joking about the more $ part.

im running ngk coppers but i dont remember the gap spec off the top of my head

honestly this stuff has been covered.

have you googled "ngk coppers heat range"?

did u look at the online tsrm?

no im new on the forum so to speak, what is the online tsrm?

 

[wardog]

The TSRM stands for T= Toyota S= Supra R= Repair M= Manual :beer:

I dont mean to be a dick but just to let you know the SEARCH buttom will solve most of your problems. Do your sear then ask question.By the way welcome to supramania.

 

[gaboonviper85]

no im new on the forum so to speak, what is the online tsrm?

Book mark this link homebread.....it will become your bible and you will learn it.

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/default.aspx

 

[dragracer]

S= SERVICE in TSRM :nono:

 

[wardog]

I personally like the whole S= Supra :icon_bigg

 

[SUPRASTEVE]

Isn't it like 0.034? i

 

[7M-KDL]

Isn't it like 0.034? i

.031 - .038 i believe

 

[hvyman]

Yes S= supra in TSRM

Fixed.

 

[isnms]

Here's some plug numbers:

NGK Sparkplugs

• OEM NGK Platinum plugs 5275, BCPR6EP-N-8, .032 JIS
• NGK Traditional spark plug 2330 BCPR6ES .032
• NGK Traditional spark plug 6282 BCPR7ES .032 COLDER
• NGK Iridium spark plug 5689 BCPR6EIX .032
• NGK Iridium spark plug 5690 BCPR7EIX .032 COLDER​

Denso Spark Plugs

• OEM Denso Platinum plugs 3113, PQ20R-P8, .032" JIS
• Denso Traditional spark plug 3007, Q20PR-U .032"
• Denso Traditional spark plug 3010, Q22PR-U .032" COLDER
• Denso Iridium spark plug 5302 IQ20 .032"
• Denso Iridium spark plug 5313 IQ22 .032" COLDER​

Denso numbers courtesy of Zumtizzle

 

[grimreaper]

• NGK Traditional spark plug 6282 BCPR7ES .032 COLDER
I run this at .028-.029, I change them once a year when i do an oil change.

 

[gottadiesel]

So curious why are you running them at a closer gap, would not the larger gap create a greater spark? yet the closer would be less resistance... just curious as to your thoughts behind it. I am going to be running the same plugs, will be installing as soon as I get my MSD wires in later this week

 

[dbsupra90]

you want to run as large of a spark gap as possible without blowing out spark.

i always run coppers. platinum isn't as good of a conductor, but last a hell of a lot longer. which is why most oem plugs are platinum.

only plugs i've had any real issue with are bosch. i prefer the ngk plugs since they perform well and readily available.