Rate your plug
#11
02-20-2013, 10:59 PM
Not really. Multi-ground plugs do serve a specific purpose and that's to provide more than one useful spark gap. That way if one is more fouled or eroded than the other you still get a good spark. They also wear slower than regular plugs.
Multi-grounds, like Golden Lodge, were very big before rare earth metal tips became popular because of their longevity. A friend of mine used to own Alpha Romeos. One in particular, and Alpha-Sud Ti, used those quad electrode Golden Lodge plugs. He tried regular plugs in it, good ones at that, and they lasted under a thousand Ks. When he checked why the car was running like crap, besides it being a Friday and due for it's weekly tune-up the side electrodes were all but GONE. These days you'd just use platinum or Iridium plugs, but this was before they were available. That Sud also had an 80KV coil output. Vicious little thing it was.
Multi-grounds, like Golden Lodge, were very big before rare earth metal tips became popular because of their longevity. A friend of mine used to own Alpha Romeos. One in particular, and Alpha-Sud Ti, used those quad electrode Golden Lodge plugs. He tried regular plugs in it, good ones at that, and they lasted under a thousand Ks. When he checked why the car was running like crap, besides it being a Friday and due for it's weekly tune-up the side electrodes were all but GONE. These days you'd just use platinum or Iridium plugs, but this was before they were available. That Sud also had an 80KV coil output. Vicious little thing it was.
#12
02-20-2013, 11:02 PM
Join Date: Jan 2013
Location: Central West NSW, Australia
Posts: 143
I think I still have mine ... somewhere.
I remember seeing a plug that had a circular side electrode. The idea being that a regular one slightly shrouded the spark and this new design, which was also a fixed gap, would last longer and give more reliable ignition since the spark was completely exposed to the fuel/air mix. I don't know if they're still around or people thought they were too gimmicky.
I remember seeing a plug that had a circular side electrode. The idea being that a regular one slightly shrouded the spark and this new design, which was also a fixed gap, would last longer and give more reliable ignition since the spark was completely exposed to the fuel/air mix. I don't know if they're still around or people thought they were too gimmicky.
#13
02-20-2013, 11:23 PM
I think I still have mine ... somewhere.
I remember seeing a plug that had a circular side electrode. The idea being that a regular one slightly shrouded the spark and this new design, which was also a fixed gap, would last longer and give more reliable ignition since the spark was completely exposed to the fuel/air mix. I don't know if they're still around or people thought they were too gimmicky.
I remember seeing a plug that had a circular side electrode. The idea being that a regular one slightly shrouded the spark and this new design, which was also a fixed gap, would last longer and give more reliable ignition since the spark was completely exposed to the fuel/air mix. I don't know if they're still around or people thought they were too gimmicky.
#14
02-20-2013, 11:27 PM
Join Date: Jan 2013
Location: Central West NSW, Australia
Posts: 143
That's the kind of thing I mean, but the ring electrode sat slightly above the surface with gaps underneath it. When it fired it looked kind of like a little blow torch as the design shot a jet of flame straight down from the plug.
and yeah, magneto ignition hurts like a bytch! You never forget your first bite from those.
and yeah, magneto ignition hurts like a bytch! You never forget your first bite from those.
#15
02-21-2013, 01:05 AM
Join Date: Jan 2008
Location: SW Ontario, Canada
Posts: 869
Truer words have never been spoken. With modern fuel, and 4 stroke singles, reading plugs is essentially a waste of time. If your plug has that nice tan look, you're WAY rich. 2 strokes may be the same, but I don't have experience with them. My bike still has the original plug at 14,000 km.
#16
02-21-2013, 03:49 AM
I just changed my stock plug for the 1st time at 6k miles not cause it ran bad I just thought it time. Put the same plug (new) back in. The old one was gapped wide and a little rich (tan) looking but I already know I'm a little rich.
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