Thread: Trying new plugs - Brisk

If the LGS plugs you have are like the ones I bought from you, then it is a surface gap design. One of the advantages of that design is supposedly easier firing of the plug.

With regards to fuel economy, do you have any certified truck scales along your route? If so, that is going to be among the most accurate way to test fuel economy. In fact I believe there is an ASTM standardized test for measuring fuel economy that way. While the D.I.C is decently accurate if you drive all highway or all city but through any combination in there and it begins to show sizable errors. So if at all possible, using truck scales would be the most accurate way as that removes any inaccuracies in tank fill, temperature and so on.

Acceleration will be a tough one for sure and its sole purpose would be to serve as a cumulative representation of the plug. In other words it would be a big picture view of plug performance not measuring anything specific.

Materials would just be a general thing so that we can distinguish the construction of plugs of similar configuration.

Even with the current limiting factor of the ignition module, I do not think that it will be an issue. As voltage goes up, current comes down. So it is unlikely that will come into play, and if it does then we will have one heck of an ignition system on our hands. Though I would like to know what current level it is limited at. And I agree that impedance may be a better number to note since we have the coils in play, but to accurately calculate that, we will need to know the resistance of the plugs wires, etc.

Im wondering Lee, if to get this off the ground, if it would not be better to build a test stand? Sort of like a litmus test. If the plug shows favorable results with the test stand then install them and proceed with real world testing?

I wonder if we could power a ignition module and connect a coil pack up and a plug wire and plug and be good to go. All we would need to do then is just provide the interrupt that the vanes on the harmonic balancer does to the cps to fire the ignition.

If nothing else, we could develop our test procedures that way, no?

Originally Posted by SyntheticShield

If the LGS plugs you have are like the ones I bought from you, then it is a surface gap design. One of the advantages of that design is supposedly easier firing of the plug.

With regards to fuel economy, do you have any certified truck scales along your route? If so, that is going to be among the most accurate way to test fuel economy. In fact I believe there is an ASTM standardized test for measuring fuel economy that way. While the D.I.C is decently accurate if you drive all highway or all city but through any combination in there and it begins to show sizable errors. So if at all possible, using truck scales would be the most accurate way as that removes any inaccuracies in tank fill, temperature and so on.

Acceleration will be a tough one for sure and its sole purpose would be to serve as a cumulative representation of the plug. In other words it would be a big picture view of plug performance not measuring anything specific.

Materials would just be a general thing so that we can distinguish the construction of plugs of similar configuration.

Even with the current limiting factor of the ignition module, I do not think that it will be an issue. As voltage goes up, current comes down. So it is unlikely that will come into play, and if it does then we will have one heck of an ignition system on our hands. Though I would like to know what current level it is limited at. And I agree that impedance may be a better number to note since we have the coils in play, but to accurately calculate that, we will need to know the resistance of the plugs wires, etc.

Im wondering Lee, if to get this off the ground, if it would not be better to build a test stand? Sort of like a litmus test. If the plug shows favorable results with the test stand then install them and proceed with real world testing?

I wonder if we could power a ignition module and connect a coil pack up and a plug wire and plug and be good to go. All we would need to do then is just provide the interrupt that the vanes on the harmonic balancer does to the cps to fire the ignition.

If nothing else, we could develop our test procedures that way, no?

Zooomer was the one that mentioned the current limiting factor and how pointless it was to buy lowered resistance plug wires for performance benefits. So I can't really comment on that at all, I'm afraid.

I'm sorry, but I would have to go a long way to find truck scales.

I agree a test system would be ideal, however time consuming and potentially expensive for what it would be used for. Although very cool.

Yes the plugs are the same as yours only with a tighter gap for higher boost applications.

I seriously hope the person that told me about these will step in with some thoughts.