Spark Plugs!

[blkcorvair]

Come to think of it I never seen a thread here on what type of spark plugs everyone is using... Since I just fouled and tossed my set I was wondering what type and brand everyone is using?????

 

[ecurie_ecosse]

I'm using Champion RN9YC @ .030" on my 1500.

Stuart.

 

[Morris]

I am curious about this too, as my plugs seem like they may be a bit too cold. They sure collect lots of crap.

 

[racingenglishcars]

Hotter plugs for generally lower speed driving, colder for generally higher speed driving, like a race car on the track. This is due to running a richer mixture at lower speeds (including acceleration) which burns colder, and a leaner mixture at higher engine speeds which burns hotter.
Generally start with N9Y or equivelant.

 

[jcatnite]

Bosch 4016 gapped to 0.025" in my 1500. They seem to do pretty well.
JC

 

[aeronca65t]

I've been running Autolite plug #54 which is similar to a Champion N11Y. They don't seem to get too hot and are cheap and easy to get (Autozone, etc.)

I change them about every other event. With the Pertronix and a big American car coil, I am running about 0.035" gap with pretty rich mix (and no fouling).

 

[zimmy]

i could possibly use a hotter plug in my 1275....suggestions?

 

[Glen_B]

NGK BP6ES for street, 7ES is "colder" for hot road use.

Glen

 

[Pythias]

i'm with glen NGK BP6ES in a 1098. i'm running a Crane electronic ignition, so i've opened up the gap to .030. been considering going even wider.

 

[spritenut]

NGK BP6ES in the stock Sprites, BP8EV in the go fast Sprite

 

[Hap Waldrop]

I'm a big supporter of NGK myself, been using them for almost 25 years, at the race track you'll see guys almost exclusively use NGK plugs, The higher the number the colder the plug with NGK. We've used as cold as #10s in the full prep race engines, we use #8s in the SCCA limited prep engines, and I think that is a good choice for you car on the race track, yu can get away with the projected tip as well until you get way up there in compression ratio, so I would suggest Scott a BP8ES, you can spend more money on the EV plugs, but they never showed us even 1 horsepower on the dyno, save your money and buy the ESs

 

[blkcorvair]

I always was a big NGK guy. Now all the usual sources sell them anymore. Think thats where Im headed.

 

[Morris]

Hap,

Can you recommend a plug for a mild street car?

 

[Hap Waldrop]

Hap,

Can you recommend a plug for a mild street car?

Morris I would recommend NGK BP6ES.

 

[Morris]

I'll go get 'em!