I wasn't talking about squeezing the hose, I was talking about turning the valve halfway I'm sneaky sneaky.

 

You're right, but smoother burn also equals less power. It's really all meaningless amounts, but if you can get away drag racing on 87 octane, why not? Especially if you know you're technically making more power while doing it. Extra buzz for you.

 

That's a given. More violent a combustion without knock will of course net more go power. Correct me if I'm wrong, but the actual enthalpy (internal energy produced plus actual pressure x volume) of 87, 89, and 93 are pretty much the same, meaning the energy created by each of them doesn't vary much from one to the next. But the amount composition of the hydrocarbons used in gas, like Frank said, varies which changes the smoothness of the burn. Heptane has an octane rating of 0 and is real explosive burning, where as isooctane has an octane rating of 100 and is smooth burning, I guess all because of the molecule constuction/layout. That's what gas octane stems from, so 100+ octane gas is actualy off the charts.

It's funny...I've gone back and read all the previous posts in this thread and it went from laymans terms for joe blow, to me screwing it all to hell. Sorry.

And oh yeah, carbs suck balls.

 

so you are telling me that to get more water out of a water spicket(sp) I should only open it half way? so then if I only turn it a quarter of the way then I would get even more coming out, wow if I just barely crack it open imagine the flow!! not quite buying the logic.

 

Thank you!

 

yeah the true BTU rating of 87,89 and 93 are the same. if i remember right. its just the resistance to knock that changes.

oh and carbs don't suck balls... really the wet flow intake runs cooler and makes more power at one rpm than can be made with a dry flow port FI system... its just the A/F over a given usable rpm band thats hard to get right with carbs...

pro stock cars are tuned to the point of being faster with a carb at a given track on a given day that the carb was tuned for.

 

Just kidding, just kidding. Carbs aren't all that bad. Although, if you were to run a carb for intake cooling properties, you could always go TBI. And welcome to the '80's, hahaha.

Alright, alright.....back to studying I go!

 

Learn to read. That's the exact opposite of what I wrote. I was saying that the hose remains the same diameter at half spicket and full spicket, but at full spicket, more water is forced through due to pressure with no change in hose diameter.

 

F you, carbs are awesome! Remember that next time you have to replace a high dollar injector, get weird problems due to a sensor going bad, or have to replace a computer all together. Aside from my wife's car, nothing I own is fuel injected, and I love it.

 

True, but then you realize that some EFI'd commuter cars are so efficient that they can run safely at AFR's sometimes as extreme as 20:1, and you think to yourself, "Damn.....where did my carb put all that extra gas???"

I'm just pickin' Frank, carbs are cool.....on old British cars.