Vacuum Secondary Conversion
Newcomb,
A lot of builders here, myself included, use tips off the hughes engine's website, which they gleaned from many decades of building engines. I am no engineer, but If you say that this information is no longer true or relevant, can you cite where you got the information, or is it your personal experience?
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Since I have been proving it wrong for decades I can say it’s wrong.
All they are doing is repeating the same nonsense that’s been getting repeated for decades.
I’m certainly not advocating for iron heads. I’m saying you can’t just say I have aluminum heads so I can run a full point of compression with them.
I went back and watched the Engine Masters test again last night. When you heat load a head like they did, you will get run on and such.
Making a long pull like they did and then shutting the engine down like they did should never ever happen in the real world.
When was the last time you pulled a long grade, didn’t downshift and one you got to the top you pulled over and shut it down?
I can name more things like that they did but why bother? I have been arguing this same thing since 1980.
Remember that long ago? I do. Every magazine, every speed shop counterman and virtually EVERY engine builder in my area was tapped out at 8.5:1 or maybe if you begged you might get 9:1 out of them.
Those engines were pigs. They ran huge exhaust temperatures. There wasn’t a damn thing good about them.
And yet the argument still goes on.
Even Dulcich said you can’t transfer heat fast enough that heat transfer wouldn’t matter. And he was correct, except when you brutally load an engine to death.
