Miata Turbo Forum - Boost cars, acquire cats.

Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
-   General Miata Chat (https://www.miataturbo.net/general-miata-chat-9/)
-   -   2 step colder spark plugs ?? (https://www.miataturbo.net/general-miata-chat-9/2-step-colder-spark-plugs-8049/)

PaKMaN 03-09-2007 05:13 PM

2 step colder spark plugs ??
 
I'm going to be ordering NGK 2 step colder copper plugs and wires and am wondering what the part # for this is? I know you just change the last 2 numbers ... but what is our part number for the stock ones?

Ben 03-09-2007 05:43 PM

Why?

Joe Perez 03-09-2007 05:57 PM

BKR6E is stock. Or close enough, anyway.

BKR7E is a common turbo plug.

There is no BKR8E. You're into race plugs at that point.

PaKMaN 03-09-2007 06:47 PM


Originally Posted by Joe Perez (Post 90874)
BKR6E is stock. Or close enough, anyway.

BKR7E is a common turbo plug.

There is no BKR8E. You're into race plugs at that point.

Sounds good. Thanks

PaKMaN 03-09-2007 06:49 PM

I'm looking for race plugs basically.

Joe Perez 03-09-2007 07:13 PM

Unless you're actually circle-track racing the car, there is such a thing as too cold a plug. And as an FYI, proper NGK "race" plugs are about $30 each.

A little searching did turn up one cross-reference that has the right dimensions- the IFR8H-11 (stock #5068). It's an irridium "street" plug, 14mm x 19mm, 5/8" hex, gasket seat, resistor, etc. They're listed at a mere $12 each.

Let us know how they work out. I'm curious about this one myself.

y8s 03-09-2007 07:35 PM

hows that one compare to the IK22 / IK20?

PaKMaN 03-09-2007 07:43 PM


Originally Posted by Joe Perez (Post 90891)
Unless you're actually circle-track racing the car, there is such a thing as too cold a plug. And as an FYI, proper NGK "race" plugs are about $30 each.

A little searching did turn up one cross-reference that has the right dimensions- the IFR8H-11 (stock #5068). It's an irridium "street" plug, 14mm x 19mm, 5/8" hex, gasket seat, resistor, etc. They're listed at a mere $12 each.

Let us know how they work out. I'm curious about this one myself.

Looks to be a honda?

Braineack 03-09-2007 09:36 PM


Originally Posted by Joe Perez (Post 90874)
BKR6E is stock. Or close enough, anyway.

BKR7E is a common turbo plug.

There is no BKR8E. You're into race plugs at that point.


BKR5E is stock on the 1.8s, so two steps would be the BKR7Es.

becareful, too cold and they'll fowl up right away, since they won't be able to burn off the carbon.

RusMan 03-09-2007 09:53 PM

I don't remember which ones but I'm pretty sure I have the 7's, Iridium ones in my car. Has been running fine for 10k+ boosted miles

Joe Perez 03-10-2007 12:59 AM


Originally Posted by PaKMaN (Post 90908)
Looks to be a honda?

Spark plugs are spark plugs. No such thing as "Honda plugs" vs "Mazda plugs" per se.

There's a only few basic combinations of thread diameter, thread length, hex size, seat type, etc. So any one particular plug is gonna fit dozens of different vehicles.

It's like saying I run "Honda wheels". No, I run 15x7 wheels with a 4 bolt 100mm pattern and +41 offset. That they happen to also fit just about every vehicle Honda has ever made (as well as a bunch of Toyotas, Nissans, etc) isn't terribly important.


Originally Posted by Braineack (Post 90926)
BKR5E is stock on the 1.8s, so two steps would be the BKR7Es.

My bad, I forgot we started allowing their kind on this board. (just kidding, everyone) :bigtu:

Actually, isn't the 5E also standard on auto 1.6s? Not sure I understand that one fully...

I think as an experiment I may buy one of the IFR8s and stick it in my engine for a while- see how it compares to the BKR7Es after a few hundred miles. Some side-by-side photos may help illustrate this for folks.

PaKMaN 03-10-2007 03:40 PM


Originally Posted by Joe Perez (Post 90967)
Spark plugs are spark plugs. No such thing as "Honda plugs" vs "Mazda plugs" per se.

There's a only few basic combinations of thread diameter, thread length, hex size, seat type, etc. So any one particular plug is gonna fit dozens of different vehicles.

It's like saying I run "Honda wheels". No, I run 15x7 wheels with a 4 bolt 100mm pattern and +41 offset. That they happen to also fit just about every vehicle Honda has ever made (as well as a bunch of Toyotas, Nissans, etc) isn't terribly important.

I just looking that part # on ebay it appears they are used in hondas as well, thats why I was asking to make sure I was looking at the right one. But you're right.. plugs are plugs :bigtu: Thanks again.

Splitime 03-10-2007 04:08 PM

For some reason I also thought the 5 range was stock for our cars.

I had planned on running BKR7Es.

Joe Perez 03-11-2007 11:48 AM


Originally Posted by Splitime (Post 91081)
For some reason I also thought the 5 range was stock for our cars.

BKR6E-11 is standard for 1.6, but Braineack is right- the 5 is spec'd for 1.8s. And I was wrong about the 1.6 Autos- they got the same heat range but the FSM lists a Nippondenso plug for them as opposed to NGK. Damn odd.


All times are GMT -4. The time now is 12:55 AM.


© 2024 MH Sub I, LLC dba Internet Brands