AR134 Plugs?????
 

Hey folks, buddy of mine showed me a plug that he has been running for a while now and seesm to like ,.Its an Autolite AR 134 Racing plug. Anyone know anything about these. I cant really find anything other than what he has told me, that they are supposed to be a better plug for higher octane gas.

Thanks
Brad

Well, if they're anything like Champion racing plugs (and I'm sure they are), then they're just fine-center electrode, projected-tip plugs, with the possibility of having a trimmed ground electrode. Hope all of that made sense. In basic terms, the center wire is thinner, the nose of the plug is thrust into the cylinder a little farther, and the ground electrode might be cut back a little bit. Unless you're going for mega-horsepower, I'd steer clear of racing plugs. There's a lot more power to be had in places other than spark plugs. They're not the miracle that SplitFire would have you believe. Just run the stock plugs or one heat range colder, and mess with the gap a couple thousandths at a time. Or just bypass all that and buy an MSD box like I did. That thing'll light off just about anything in its path now! :eek:

Anybody else throwing away the "extra hour of sleep?" :rolleyes:

Racing plugs were only meant to last a few races. In a street car you might get a couple of months of peak performance and then they'll degrade sharply. With my MSD box the plugs would still fire at .060 but I get my best runs at .050. So in other words, I agree with Capri306

I have:

1.) Not a street car.
2.) Do have an MSD 6AL.
3.) Need new plugs and wires.

Any help otherwise is appreciated.

Bradley