If you add all that weight and power of an LS engine into a beautifully-nimble Miata, you'll next end up tearing-apart (or replacing) the transmission and/or rear-end.
The queue gets longer for more required upgrades; like the suspension, the shocks/struts, even the brakes.
Last thing you realize will be that the uni-body is no longer al dente!
Ah, true, for those that have no clue as to what they are doing & how to do it.
But, most people I know, know what they are doing and how to do it.
Understanding Multi Ground Electrode Spark Plugs
One of the most misunderstood spark plugs in the industry is the multiple ground electrode spark plug. Initially introduced in Mazda's rotary engines in 1971... The core idea here is simple: by providing several pathways for the electrical spark, these plugs aimed to reduce the likelihood of fouling—a condition where the plug's surface gets coated with unburned fuel or oil.
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This design wasn't just about avoiding fouling, though. Manufacturers believed that by spreading the wear across multiple electrodes, the spark plug's lifespan could be significantly extended. After all, if one electrode wears out, you have others ready to step in, theoretically allowing the plug to last 2 to 3 times longer than a traditional single-electrode plug made from the same material.
As automotive technology has advanced, especially with the advent of more stringent regulatory standards for improved fuel efficiency and lower emissions have led many to favor newer technologies like Iridium spark plugs and high ignitability designs. These plugs use rare metal alloys for enhanced durability and feature fine wire center electrodes with single ground electrodes that offer superior ignitability without the downsides of their multiple-ground counterparts.
All RX-2s, RX-3s and early RX-7s benefited from multi-ground electrodes.
I've been using them since the RX-2 had them. Those things were little hot rods in a straight line. Unfortunately, the underwhelming engine cooling systems were not up to the neglect of the typical American drivers. Resulting in warped engine cases and FUBARed apex seals in short order & giving the cars a pretty bad rap for a long time.
Also, the small package made people thing "great fuel economy" not realizing that for every bit of high performance HP, you are paying in brake specific fuel consumption for each horsepower that you have on tap. This is a case of the small engine having a hell of a lot of power per liter, making it use fuel like a much larger 6 or 8 cylinder engine with around the same power.
These days I am using the E3 DIAMONDFIRE TECHNOLOGY: E3's patented Edge-to-Edge design improves upon the phenomena that caused racers to cut ordinary electrode spark plugs in order to increase the number of sharp edges and improve the spark discharge.
Or the Pulstar: The science underlying our technology is sometimes called pulse power: energy accumulated over time is released quickly producing a very high power event, i.e., a pulse. Our patented technology applies this concept by embedding in Pulstar spark plugs a capacitor to store ignition coil energy prior to discharge, and to drive an ultra-high current channel across the gap when released. That powerful current creates an electromagnetic field that expands through the combustion chamber and ionizes the fuel air mixture, allowing the flame kernel to grow much more rapidly than in a conventional spark plug ignition event. The result is the most precise, powerful, consistent and complete burn possible.
On the chassis dyno and in the real world, my two cars (neither is stock [2024 Subaru 2.5 Liter CrossTrek & 2004 Chevy Silverado 5.3 Liter]) do best with these. As to how long they will last: I don't know yet, they get looked at every 4th oil change (based on 5000 mile oil changes).
See this test of: E3, Pulstar, Autolite Racing, NGK Iridium, and NGK Copper spark plugs tested for fuel efficiency performance and visually observed for burn characteristics (yes, visually through a clear cylinder head):
www.sikky.com
No decent photos yet though as it only came yesterday.
www.nytimes.com
