What Plugs to Run???

[DKK Ted]

What is the spark plugs of choice?? 14mm long reach, was running Denso W16ES-U, looking for HOT plugs.

Ted

[Jason Foster]

I'm running NGK D7EA and D6EA is hotter which I've run before.   D8EA is commonly used as well and is a cooler plug.

[JS]

Ditto, though they are 12mm. NGK B6ES perhaps?

[dirk zeyen]

Ngk BP 6 ES

ES= 14mm long reach

6= Hotter than 5 ( 5 is the original heat)

P= The cone is more inside the chamber

[javabug]

Ngk BP 6 ES

ES= 14mm long reach

6= Hotter than 5 ( 5 is the original heat)

P= The cone is more inside the chamber

6 is colder. P=projected nose. I run BP7ES and just switched to non-projected B7ES.

[Jason Foster]

cool info guys. 

[peejke]

denso IWF 16 iridium plugs, best ones for me

[Fasteddie63]

B5ES Is What I Ran In My Street Eliminators,Never Fouled A Plug And Lasted A Long Time

[dyno don]

Hi Ted,  In my days of tuning(when short shorts,LSD, and the Beatles were popular and running L82Y/L88 Champion spark plugs and 10:1 and 12:1 compression was cool on the street) I went to, and used projected nose tip plugs at 9:1/9:5 in my small engines and had found in fact throttle response was  much crisper and drivability was much more giving/fyi  I always had the best tune with champions ( would always deburr the threads and use anti seize compond or some Marvel Mystery oil  /found that wd40 or similar would crystalize) but ngk were my second with a wider heat range chart but seemed a bit shy of a good tune for me personally). you probably already know this  but higher the cylinder temps are requires a colder plug and visa versa. For every full point of compression equals a colder value plug value. This is a frontier that MANY dont have a clue or know ANYTHING about either and it can make a huge difference in overall performance or  make a cylinder head dead in the water in terms of reaching its full potential as well as damage the head. Im not sure if any of this was of any help to you but you build some nice stuff and your (new look) engine compartment looks BITCHIN'....    Dyno Don      bababa...ah you know the rest...LOL

[glenn]

Ngk BP 6 ES

ES= 14mm long reach

6= Hotter than 5 ( 5 is the original heat)

P= The cone is more inside the chamber

BPC6ES which are a 5/8" hex vs the 13/16" of the BP6ES

[DKK Ted]

Yup! Some good info here! Thanks Jason and Dyno and the rest, on my other motor I was using the D7EA, those heads are 12mm long reach, my motor now in the car are 14mm long reach, I've used the Bosh, and Denso 14mm, and they seem easy to foul. I have re-jetted the carbs, but now need to change the plugs. Thinking of using the B7ES plugs, (cause nobody has the B6ES or the B5ES plugs). I'm thinking the heat range on the "D" series and the "B" series are the same, just different threads and length, right? And Dyno, asked about Champion plugs 14mm with long reach with no luck, so far. On a different note, I do have a new set of e3's, but are 12mm long reach, will try them when the other motor goes back in. Anyway, any other plugs out there that you guy's use that work??

Ted

[nicolas]

i like the NGK BP6ES's and have had good results with my street engines. i run 9 CR. no failing, but i did go for a compufire module in my 009 just to make sure i have a clean spark. but i went with the module mostly because of the points bouncing.

[Jim Ratto]

I've been running NGK Iridium in my car and the cars I've tuned for last 2 yr or so. They cost more but last so much longer and the carbs become VERY forgiving to set up.

[DKK Ted]

Hey Jim, on the NGK, the lower the # the hotter they are, right?

Ted

[glenn]

Hey Jim, on the NGK, the lower the # the hotter they are, right?

Ted

Correct the lower numbers are hotter heat range.