will these plugs work with my combo ?Brisk DR12S
Yes.
Until I discovered these DR10S,DR12S,and DR14S plugs,The only plug available that met all of the criteria (Gasket plug,Relatively cold,Non projected tip,Resistor,and Cut back ground strap) was the NGK BCR8ES. It's quite cold,but I often thought it would be nice if a colder version was available to try,but it was the only version they offered.
When we talk about a cold plug,we are talking about its ability to remove heat from the electrode. If we allow the electrode to become too hot,the air fuel mixture will ignite prematurely (pre ignition) and that is not good. Now the only time you need a plug that can keep the electrode cold is at WOT. You don't have a heat problem while cruising around on the street. If you cruise around the streets with a cold plug,you will notice that the idle will become erratic with some stumbling at a stop light. The reason for this is because the electrode becomes so cold that it doesn't burn enough deposits off of itself so the ignition starts to misfire. To clean the deposits you simply run to the next stoplight at WOT which creates enough heat to clean the electrode and you will notice a very smooth idle when you get to the next light. I've experienced this with the BCR8ES plugs,so I know that it is relatively cold.
Copper is a good conductor of electricity,but the silver used in the brisk's electrode is better,meaning less resistance. Because it has less resistance,it will produce a colder spark because the secondary voltage put out by the coil will be less because of the lower resistance.
Copper is a good conductor of heat,but silver is better so it has a greater ability to take heat away from the electrode.
The brisk DR12S is their equivalent to the NGK BCR8ES
When it comes to Brisk,14 is hot,12 is colder,and 10 is the coldest.