Exactly how do you chop a plug?

[jmoore]

Iv'e read about it, but I don't get it. Someone help the newbie. What's the process?

[fixitrod]

The idea is to look at the very bottom of the porcelin inside the plug. Here's BenBB's page for jetting and plug chops.

 

http://www.dfn.com/benkaren/jetfaq.html

 

If you scroll down to #33 he has pics.

[jmoore]

Thanks much!

[SANDSTAR]

The simple way is to stick a small flat blade screwdriver down inside the spark plug until it is at the bottom between the porcelean and the metal. Gently pull back on the screwdriver until the porcelean(sp) cracks. It will crack vertically and come out in two pieces, of which you can examine up close for jetting purposes.

 

This is much faster than hacking the threads. Takes about 2 seconds, and you don't even need to let the plug cool down. I was skeptical until I tried it.

[crazyfzr1]

Great info!

 

We should have a technical sticky with all that carb and plug shop info...again BansheeHQ rocks!