Q Tip and Aussie Hard,
We just completed a batch of PAMCO's and sent a bunch to MikesXS, so if you need the kits from MikesXS, just wait a couple of days for them to restock.
Aussie hard,
You can benefit from the higher output coils even on a stock engine. Here is a little chart of some test runs that I did last year on my stock '81/H. The runs were each a 70 mile round trip retuning to the same gas pump to fill up and calculate the mileage. The temperature was in the mid 70's (always in South Carolina!) the route was mostly clear highway, the speed was 55 MPH. These results show an improvement in gas mileage as the coils and plugs are changed. In the last two runs, the main jets were changed to 135's because the efficiency of the engine was so much better that the engine was burning more of the fuel to the point that it was similar to running lean. In any event, it is a standard recommendation to go with 135 mains in the BS34's as they are EPA lean from the factory.
You'll notice that the mileage continued to increase even though the mains were larger.
Generally speaking, better gas mileage equates to more power, all things being equal.
The higher output coils produce better efficiency from the engine for three reasons, all of which create a larger initial kernel of flame in the combustion chamber that then ignites the rest of the mixture in the cylinder. Kinda like using a larger, hotter match to light the camp fire:
1. Higher voltage means higher current in the spark which means a hotter spark.
2. Higher voltage allows a wider spark plug gap which exposes more of the mixture to the spark.
3. Higher voltage means it takes longer for the voltage to decay to the point where the spark is no longer sustainable. This also exposes more of the mixture to the spark over time.
All of this is important because the mixture is not a uniform bunch of molecules as it enters the combustion chamber. It is a mixture of some air molecule, some fuel molecules and some ideal combinations of air and fuel, so the more mixture that is exposed to the spark, the more molecules are that burn. It is one of the causes of a rough idle because the total number of molecules of air and fuel that actually burn is different with each stroke, so the more that are ignited in the first place, the more that burn so this results in a smoother idle as well.
Other side benefits to a higher voltage coil include the fact that the voltage is higher when the battery is low and the higher voltage will burn through fouling better.
Getting back to the stock situation, sales of the PAMCO have been very good this year, about double the sales of last year, so that caught me a little bit by surprise. I am increasing production and hope to keep MikesXS stocked in future, and I thank everyone for their patience.
Buy away!!!! lol
