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I know this is not vette related but for those who were interested in how Max operated his supercharger in the movie "MAD MAX 2" This is it. Hope this does'nt disappoint anybody.

dman535

Kewl article!

Toyota MR2's had an electromagnetic clutch on their superchargers, pretty cool liitle cars.

markdtn

I remember reading a question about this in Car Craft about the time the movie came out. At that time they said there was no electromagnetic clutch that would stand up to that kind of horsepower. Dont know how much the MR2s pull, but I'm guessing 40-50? I think a Frigidaire A-6 A/C compressor is supposed to use 15 HP. I think a stout Roots blower might pull 250+ horsepower to drive it.


[Modified by markdtn, 9:10 AM 11/25/2003]

comp

i don' t remember it making boost, but the build artical was a few yrs.ago
a gear head IS a gear head doesn't mater the car, i've wanted something
right drive for ever..... mayby my 76 p/u any ideas???

SteveG75

Find the other "Mad Max" thread about his type of car. There are some good links to info on it.

Basically, the supercharger was a gutted shell for looks only, it contained a carb inside.

Twin_Turbo

Look at the bottom pic, you''ll see the carb on a conventional manifold there, the blower is just a gutted case

norvalwilhelm

markdtn a normal blower on a street car that is only putting out about 10 horse takes very little power to run the blower. My belt is so loose you can almost slide a finger between the pulley and belt. I don't know how much horse it is taking but if the belt doesn't jump teeth even at that loose a setting it can't be taking alot of horse power.
Sure a fuel dragster running 30 pounds of boost at 8000 rpm takes at least that much but not a normal car.
Double click to enlarge

MN-Brent

Wouldn't it be impossible to run a engine with a 6-71 type blower set-up and not have it turning? You would have no air/feul mixture entering the heads intake ports.

If the Toyota is electro-magnetic clutch, then it must only be a sort of dry boost system with port fuel injection and can flow air in non-boost mode as well.


MAD MAX-nothing like fast cars, motorcycles, and killing people. :jester

Brent...


[Modified by MN-Brent, 11:35 AM 11/25/2003]

markdtn

Why would you want a big blower to only make 10 horsepower? I had read those figures somewhere, and I am definately capable of being wrong. I thought I had read that to make 500 horsepower at the crank that it took 250 to drive it. I have a friend with a 94 LT1 Camaro and centrifugal blower that makes 476 rear wheel horsepower with 10 lbs of boost, but I don't think a 6-71 is as efficient as one of those. Perhaps some with 6-71 blowers will start a new thread and enlighten me. Sorry, Mark

norvalwilhelm

Sorry markdtn I thought you were talking about taking 250 horse to drive the blower. I was saying they are not that inefficient. They are about 80% efficient and go down as the boost comes up.
I run 12 pounds of boost with a loose belt and it doesn't jump teeth so it doesn't soak up that much horsepower.
The advantage of a blower is instant boost regardless or rpm. A supercharger builds boost with rpm and blower puts out almost full boost from idle on up. The torque is unreal . By 1500 rpm I can have full boost. I also found the blower easy to install.
If I had to do it again I would still go with my 8-71 blower over a supercharger and definitely over the turbo's. To me the turbo's while the most efficient require alot of work, fuel injection and retain alot of under hood temperature.
I have run my 8-71 for 3 or 4 years now and have not had any problems.