supercharged 7.3

[pro99line]

Originally Posted by mschn99

one intersting thing to think about....although i dont know if this in any way will end up being the case......is that the only way to overcome the atomization you guys are looking for with the big oil systems is to add more air....thus creating more heat with the combustion and adding to the amount of fuel can be burned.....this could....although i doubt it.....create enough heat to burn some of the unbrunt fuel on the higher chip settings that just ends up being smoke......i dont think this is going to help....but im curious to see........Marc

atomization has nothing to do with the amount of air the motor is getting. it is strictly the way it breaks the fuel into fine particles when spraying into the motor so it can burn more completely.

[mschn99]

the biggest difference proline....is the volitility of the fuel....and i honestly dont know how much affect the blower will have....but i definately dont think the blower will have near the effect that you can produce on a gas motor...but im curious to see.......

[mschn99]

Originally Posted by pro99line

atomization has nothing to do with the amount of air the motor is getting. it is strictly the way it breaks the fuel into fine particles when spraying into the motor so it can burn more completely.

right....but i was saying the only way to burn bigger molicules is with more heat.....and since the compression of the air actually ignites the fuel in a diesel....i had the potential theory that more air could light the bigger molocules of fuel more efficiently........

[pro99line]

Originally Posted by mschn99

right....but i was saying the only way to burn bigger molicules is with more heat.....and since the compression of the air actually ignites the fuel in a diesel....i had the potential theory that more air could light the bigger molocules of fuel more efficiently........

That is why I said someone correct me if I was wrong. I have only had experience with gas motors all my life so the new idea of the compression igniting the fuel is new to me. I forgot that the diesel basically runs off of heat. The more compression the hotter and the more power. Where as gas is somewhat the same in the fact that hotter "leaner" means more power. It is just the compression and heat of the cylinder is not what is igniting the fuel on gas. I will get the full concept one day and quit comparing the two but atleast the internals are similar so I can work on that part if ever needed. I just feel he might can a little power but I would like to see dyno results and know how it runs for everyday driving even though I do nt see any problems with that but who knows you may get an eradic idling problem. Please keep correcting me when needed. It keeps me on my toes and actually this forom has brought back much knowledge of gas motors. BTW that 400 will be beast compared to that 350. My buddies stock block 400 with only a set of keith black pistons putting out 13:1, double hump heads, and holley 750 in a chevelle run a 6.40 in the 1/8th. I have outrun many of 350's with the Nissan but 400's have been another story. Good luck and would love to see your face when you step off into that 400.

[mschn99]

Originally Posted by pro99line

That is why I said someone correct me if I was wrong. I have only had experience with gas motors all my life so the new idea of the compression igniting the fuel is new to me. I forgot that the diesel basically runs off of heat. The more compression the hotter and the more power. Where as gas is somewhat the same in the fact that hotter "leaner" means more power. It is just the compression and heat of the cylinder is not what is igniting the fuel on gas. I will get the full concept one day and quit comparing the two but atleast the internals are similar so I can work on that part if ever needed. I just feel he might can a little power but I would like to see dyno results and know how it runs for everyday driving even though I do nt see any problems with that but who knows you may get an eradic idling problem. Please keep correcting me when needed. It keeps me on my toes and actually this forom has brought back much knowledge of gas motors. BTW that 400 will be beast compared to that 350. My buddies stock block 400 with only a set of keith black pistons putting out 13:1, double hump heads, and holley 750 in a chevelle run a 6.40 in the 1/8th. I have outrun many of 350's with the Nissan but 400's have been another story. Good luck and would love to see your face when you step off into that 400.

yea.....shes gonna be an interesting but fun project.......got a lot of thinkin to do on her thought......

[Klutch]

The better atomization from big oil does not need to be overcome by air or anything. It is going to help the combustion process with no help form more air. Big oil alone does not add anymore fuel than what was going into the cylinders before. The unburnt fuel in big hp chips is poorly atomized fuel, not fuel that doesn't have enough air. Big Oil supplies the proper oil pressure, thus atomizing the fuel properly, which sprays it into the proper location in the cylinder and none of this requires anymore air than before, unless you add more fuel.
As far as the leaner the better for gas engines, that is correct, but for a diesel the more fuel you burn the more power you are going to make. As long as you burn the fuel, which requires a big amount of compressed air, or drugs. A diesel is compressing it's fuel so it explodes where a gas engine ignites it's fuel. So like I said more fuel+more air= more power.

[mschn99]

Originally Posted by Klutch

The better atomization from big oil does not need to be overcome by air or anything. It is going to help the combustion process with no help form more air. Big oil alone does not add anymore fuel than what was going into the cylinders before. The unburnt fuel in big hp chips is poorly atomized fuel, not fuel that doesn't have enough air. Big Oil supplies the proper oil pressure, thus atomizing the fuel properly, which sprays it into the proper location in the cylinder and none of this requires anymore air than before, unless you add more fuel.
As far as the leaner the better for gas engines, that is correct, but for a diesel the more fuel you burn the more power you are going to make. As long as you burn the fuel, which requires a big amount of compressed air, or drugs. A diesel is compressing it's fuel so it explodes where a gas engine ignites it's fuel. So like I said more fuel+more air= more power.

i understand all this...my point was just that a hotter oven may burn the fuel that a normal oven wouldnt....i know it is not a perfect or optimal set up....it was just a theory that i said in my post that even i doubted....just came into my head and thought i would bring it up......Marc

[drmiller100]

Originally Posted by pro99line

atomization has nothing to do with the amount of air the motor is getting. it is strictly the way it breaks the fuel into fine particles when spraying into the motor so it can burn more completely.

that is it EXACTlY.

big dropletts of fuel take a LOT longer to burn the a bunch of little teeny droplets of fuel.

it takes fuel and air and compression to ignite. big droplets of fuel have fuel adn compression, but not a lot of air.

adding more air in with the bigger droplets of fuel wont' do anything.

regarding the blower, as a start, if you are going to use a blower for a 5.0 stang, start with a 3 times smaller diameter pully on the blower then teh 5.0 had.
on the 5.0, you are spinning it at like 6,000 rpm on a 5.0 engine. on the smoker, you are 7.3 (50 percent larger engine), but only spinning it at half the speed.

somewhere to start.

would be a LOT easier and cheaper to just throw another turbo on a powerstroke. pulleys are a PITA to get all working.

[overl0rd]

pro99line- I was referring to the parasitic load that the supercharger creates when it's not making boost. Less fuel and more air in a diesel just equals less power, more fuel means more power, to an extent.

Marc- If it did create the extra heat to completely burn all the fuel the end result would be more power. P.S. If you need small block parts, I might be able to help.

Also something to ponder, since the 7.3 doesn't rev near as high a gas motor, I don't think a supercharger, especially a centrifugal type, would be very effective at all. You'd have to run a tiny pulley on the blower just to get it to boost soon enough and it would almost have to be cogged to avoid slippage.

[mschn99]

Originally Posted by overl0rd

pro99line- I was referring to the parasitic load that the supercharger creates when it's not making boost. Less fuel and more air in a diesel just equals less power, more fuel means more power, to an extent.

Marc- If it did create the extra heat to completely burn all the fuel the end result would be more power. P.S. If you need small block parts, I might be able to help.

Also something to ponder, since the 7.3 doesn't rev near as high a gas motor, I don't think a supercharger, especially a centrifugal type, would be very effective at all. You'd have to run a tiny pulley on the blower just to get it to boost soon enough and it would almost have to be cogged to avoid slippage.

thats kind of what i was thinking......

and hey...on those parts...i might look you up...my old man has 4 or 5 blocks i can chose from.....and i have not decided how radical i want to go from there....especially with the cooling system required to run a stock 400....i decided against the blower and im just going to go with motor mods(i was gonna blow a 350, then decided on a 400....but thought the blower might still be a good idea....and now im thinkin just the 400 with some work)....i cant make up my mind