There are double china coils, I have a pair

@@thomaslindroos1667I know they make the coils , i said they do not make the early style cases for the two piece coiled saws.

Everything else you said makes sense except for high compression reduces heat. That sounds like a stretch. If you increase the compression usually you make more hp. More hp usually makes more heat. Might make less waste heat per hp with higher compression but you still will be making more heat.

​@@kraftzion If you burn the same amount of air-fuel mixture with higher compression compared to burning it with lower compression, you cannot generate more horsepower and more heat at the same time. That would be generating energy. It's not a perpetual motion machine. Here, you can only transform it. The transformation involves reducing heat and increasing the work done by the crankshaft. And that is what higher compression does.

Okay, so let's take fuel out of the equation. Absolutely any substance that we know of on planet Earth will rise in temperature as pressure increases. When a guy building a hot rod adds a bigger radiator... why does he do that? Because his high compression motor requires more cooling. Because the hotter you make an engine, the more heat it generates. Simply adding compression will indeed make any engine run hotter, regardless of the amount of fuel you are burning. Compression adds heat. Not sure where you heard that it gets cooler... but that is 100% backwards. This is why with very high compression engines, higher octane fuel is required. Because the heat that is generated through compression will cause pre-detination. Diesel engines work on this principle. They run such a high compression, that no spark is needed and the only way to shut down the engine is by cutting off the fuel supply. I repeat... compression generates heat. The more compression, the more heat. It's physics. There is no way around it.

@@novicelumberjack OKay. "Absolutely any substance that we know of on planet Earth will rise in temperature as pressure increases" - I agree. "When a guy building a hot rod adds a bigger radiator... why does he do that?" - Because he expects to be burning more air and fuel, and yes, he will need a bigger radiator. "Because his high compression motor requires more cooling." - I disagree. "Because the hotter you make an engine, the more heat it generates." - Of course, if it consumes more fuel or if the efficiency of the engine decreases. "Simply adding compression will indeed make any engine run hotter, regardless of the amount of fuel you are burning." - I disagree. "This is why with very high compression engines, higher octane fuel is required." - In the case of naturally aspirated engines, it holds true that a higher compression ratio equals higher combustion efficiency, which means less waste heat and more power at the crankshaft. However, fuel has its limits and conditions under which it burns evenly from the spark of the plug. "Because the heat that is generated through compression will cause pre-detonation." - I agree. "They run such a high compression, that no spark is needed and the only way to shut down the engine is by cutting off the fuel supply." - I agree. "I repeat... compression generates heat. The more compression, the more heat." - If we are talking only about the compression phase, I agree. If we consider the heat generated during both compression and expansion, then I disagree.

@ladislavgazdik7595 First off, I'd like to say that I am having a small amount of fun here. I am enjoying this discussion. You clearly are not an idiot who quickly turns to insults, but truly believe in your ideas. And I want to know why. However, you have yet to convince me at all, and I'd like you to keep trying.

He's trying to avoid scammers