How much hp is a stock lightning supercharger need to make 8psi

at 5000 rpms...

15 hp?
20 hp?

Im just asking what is that supercharger need in hp to make 8psi

a lightning setup...

 

Lightnings came from the factory with 8psi and advertised 380hp at the crank.

HD came with 6psi and 340hp I believe. Most guys running 14psi are making about 430hp and over 500ftlbs of torque at the rear wheels with a good tune.

With a stock block 5.4 NA you probably ought to stay at or below 12psi and you need a good custom tune. Pistons and crank are different in these motors, also L/HD have a little less compression.

 

I think hes trying to find out how much HP it takes away from the motor to drive the blower.
Probable at least 15 or 20 HP.Maybe more,,,depending on how fast your spinning it.!

Phil

 

But it makes a lot more! So why would you care

 

Long story short...

get a lightning supercharger and strap a 20 or 30hp electric motor to it...

20-30 hp motor use around 150-200 amps full load...

a built alternator should power all my needs...


And make it were the higher the rpms... the higher the voltage so it still
spins the supercharger like the motor would if it was useing belts...

Just no belts...

Should get good power and mpg with this type of setup i think...

Just idea's in my head

 

why not grab a procharger or a vortech head unit? the centrufigal superchargers are more efficient and if you've got an electric motor pushing it you'll make instant power right off idle.

and the air to air innercooler will be easier to plumb in VS the lightning set up.


how are you going to control the speed of the electric motor at idle?

 

20 - 30 hp electric motor????? You guys are killing me.

 

Forget the superchargers and go get 2-10 bottles of nitrous wet or dry. This way you only use it when you need it.


If you decide to put on e-charger then go ahead and add the throttle body spacer...

Haha

 

I think hes trying to reinvent the wheel!!!

Phil

 

Running the blower powerd by an electric motor doesn't equal free horsepower.

Whatever it takes to drive the blower will be equaled by the power to drive the alternator plus about 10% for efficiency losses.

There ain't no such thing as a free lunch!

 

The alt makes power allready

and this can be done...

I dont know if im going to do it...

but think of a boost controller that will let u make
what ever boost u want at what ever rpm...

and a alt allready puts out 110 amp in the higher rpms Where u
would need it...Needs to be rebuilt to about 250-300 amps...

AND IM not talking about some pos thing on ebay im talkin about a real
electric motor..

In my eyes this is a great idea... just might cost alot if i cant think of a way to make this simple...

Boost at all rpms... it would be sick...

 

To control the boost

I would need boost gauge that puts out a voltage reading and tie
that into a voltage controler

Or i could just run a 2ed alt that ups voltage as the rpms go up...

There is alot of things that could be done and thats the last thing
im worryed about...

besides if i go with a voltage contoler because it might cost
alot for a premade one... but maybe not...

a 20-30 hp motor will not need alot of voltage depending on who
makes the motor...

but i can get custom motor made that runs off of 14.4 volts max for max power.. then a controler would be cheap...

i havent looked to much but there is alot of things i could do


I found a 80hp motor at 6000 rpms at 126 volts dc pulling 450 amps at full load

if they have motors like that im sure im good in the department..

ever drive a powered golf cart... the motors have good reaction time...

 

bad idea, honestly too much work, wouldnt work like you think.

 

HI!... I rwmwmber ready years ago on some site where they tested blower loss at certain H.P levels. The one that stuck in my head was on a LIGHTNING they tested. At 600RWH.P the blower required 125 flywheel H.P to turn.

The top fuel dragsters require something like 900 H.P to spin there superchargers.

 

It's a bad idea...period. There's no such thing as free power. Where do you think the alternator is going to get its power from to generate 300 amps? Thin air? It's going to pull it right off the crankshaft. And since there are inherent efficiency losses you will actually wind up taking more power off the crankshaft to drive the alternator to power an electric motor to turn the blower than just running the belt to the blower directly. Hooking up an electric motor that is even close to being capable of spinning a supercharger is just asking to fry your electrical system.


Here's something you can try. Hook up a set of good electric fans to your radiator and watch what happens to you engine's idle speed when both fans kick on at the same time. It's going to drop a few hundred rpms before the ECU compensates. That's only 80 amps too. At 14.4V an electric motor would need to draw almost 4,000 Amps to make 80hp. 4,000 Amps....you plan on running a 3" diameter copper cable to this motor? Any plans on EMF shielding to keep from frying your truck ECU and every sensitive electrical appliance within 1000 feet or so?