Quote:
Originally Posted by deggers
Thanks Rosco for all the info!
I'm not very knowledgeable on the different spark plugs that you mentioned.
I know that Champion used to use the letter R on the beginning of a part number to designate a resistor plug. I've never actually tried measuring the resistance from the electrode to the top of the plug, so I'm not even sure what a resistor plug would measure. I should grab a meter.
Aaron, a far as watching the videos, they are mjpg. I also could not get any of the videos to play in the browser. What did work was an older version of winamp and the old windows media player 6.4xxx. (mplayer2.exe on xp machines). You will most likely also need a proper video codec. A good place for these is free-codecs.com. I can't tell you exactly which codec it is using, because my machine has had so many different ones installed. I'm sorry I can't recommend a single codec, and I don't want you to install the all-in-one packs because they install a lot of stuff. They do have a mjpeg codec, which would probably be a good place to start. Sorry for the long post on codecs.
I'm going to go measure some plugs!
Duane
I checked a few plugs and they were all resistor plugs, ranging from 2k ohms to 33k ohms. I am pretty sure that the Firestorms are not resistor plugs.
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It's much easier just to download the vids in their original format, which is Windows Media Player, failing that, they do open in the posted format, it just takes a while for each to get going due to the servers used by the host site. Wait a minute or so, they do open.
For the amount of time you're going to take testing the the ohm rates, you can just as fast whip up a replica plug yourself, I think mine took me about 10-15 minutes per plug.
Just use a pair of pliers and bend the "J" strap a few times until it snaps off, then grind down any burrs left behind. Find something suitable to use as the semisphere and cut that down and attach it. I used craft wire as the grounds/earths, which I later learned was Robert Krupa's method too.
Make sure the outside diameter of the semisphere is not too close to the base of the plug or it will just keep shorting through there. This is why I opted to use the longer electrode Champion plug. It was too hard to trim down the semisphere.
There was no "R" on the Champion, it was a V12YX.
The grounds will leak big time if not attached securely to the plug base, so I suggest using a simple hose clamp to attach them. If you don't bother attaching them, the light show is pretty impressive. That light show really says it all with regard to what's happening when adding more earth to the spark.
Prior to fitting the grounds, just bend them around the "neck" of the plug, this will give you a nice even diameter, insert them into the hose clamp that's loosely attached to the base, measure a rough gap betwen the semisphere and the grounds, then tighten the clamp.
Your done. Have fun.