So would it help me to fab some pipes to bypass the roots? or is this totally hopeless

 

I duno about totally hopeless, I mean yeah it's pretty damn cool that you did it. I mean you must have done a lot of fab for the belt drives alone.

But realistically speaking I just don't see how one can benefit the other, if anything they counteract each other.

another thing I didn't mention before was that once the vortech spools up, and compresses the air into the motor, it's then hitting a huge bottleneck that is the roots blower. The roots style blowers are not huge in volume and will only push boost to certain levels, in this case it is 100% pulley derived. If the pulley only allows the SC to boost at say 7 psi, you can compress the air all you want before but that roots blower will only want to spin to create 7 psi. If you push more air into it than what it's trying to push out, you're going to hit a bottleneck. Also, once you do that, you need to remember that the roots blower is connected inside to the outside pulley, and the screws inside will only spin as fast as the engine will allow it to (since it's driven by the belts completely). Anything that is forced into it will want to make it spin faster, which is physically impossible since it has obvious resistance IE the pulley system. You're going to put soooo much stress onto that blower for no reason, if anything I think this system is simply a cool way to completely destroy that Stillen SC.

Also, if you bypass the boost going to the stillen SC you then counteract the entire purpose of having the vortech. If you bypass the boost the stillen makes, then you completely negate its reason for being on that engine.

Again, cool YES. But just an expensive and cool way of destroying things.

I haven't even begun to mention the entire fuel timing issues you're creating with this twin SC setup.....

And in the end what types of numbers or figures are you looking to create? even if tuned, built, and actually working somehow correctly, I don't see how you can get beyond say 375HP becuase of the inneficiency of that stillen blower ... Besides, if you want torque down low and high end power, you can go with a good ball bearing twin turbo setup for quick spooling and decent top end. Lighten the flywheel / clutch / pulley , and you're engine will spin up even that much quicker allowing you to boost faster etc... that's just the way to go IMO

 

wooowww... i'm learning alot here! lol

its cool that u started da engine though but i guess theres no point of having 2 superchargers huh....

 

lolololol sounds like your going "weoooowwww wheeeoowww" behind the camera

 

If you could get the Vortech to deposit it's air under the stillen, this could work. Basically, right now you have the superchargers in series, and you want them in parallel. Each SC would need it's own air intake, and you would need to work out the electronics of combining the two MAF sensor readings. Then the Roots would help you at really low end and the they would both help you at the top.

It sounds good in theory. If I had the SC's, a fab shop, and the time I would try it.

 

I like how all the haters vacated soon as i poseted a video...surprised they ant postin comments bout how it looks. cuz they cant say its goin to blow or not run. So just y piping the pipe that feeds the stillen and route it to connect below the stillen and add a valve to reguale flow. Also purchase a 2nd map to monitor and control that 2nd "throlle body" is your suggestion?

 

I would just fabricate a riser for the stillen with ports for the air from the vortech to enter. then let each breathe independently. Youre going to need someone good at control theory to add the signals of the maf.

btw maf is mass air flow which uses the amount of air mass coming in the intake to calculate how much fuel to send.
map is manifold air pressure which uses the pressure of the air inside the intake to calculate the amount of fuel to send. That's my understanding anyway

different things, im not even sure which one our car has. I think maf

 

yea my bad i def. ment to put maf instead of map but yea thats correct and are you sure it would need 2 because i would think as long as the reading was taken befor the y in the pipe it would give a proper signal and dam i hope i can just tap into the current manifold without a riser cuz that means id have to find someone that even does that kinda work. i dount a could plasma cut a riser very well...haha

 

BINGO. This is the only real solution, think Toyota Supra. Now most people end up undoing all of the marvalous engineering that went into the sequential turbo system when they want to up the power. For this case to one-off something similar would take either alot of time or alot of money. But if it can be pulled off it would be awesome, not necessarily practical, but still awesome.

 

New member and Mechanical engineer here. While this isn't necessarily the most simple and efficient way to make power, there is no reason it shouldn't work, and work in the way built now. At this point I see engine management as the only real roadblock.

Many people have been bringing up the fact the the stillen is only good to 7 psi or so, which is true, when its cold side is operating at atmospheric pressure. The full statement here is actually that the stillen is only good to make a pressure DIFFERENTIAL of 7 psi at atmospheric. It is creating an additional 7psi pressure, on top of the 14.6 that exist at sea level. As with any compressor, be it a turbo, a roots or a centrifugal supercharger, the pressure they create is always relative to the pressure on the intake side. You'll notice the effect of this on a supercharged car driving at high altitude, they make less pressure at the manifold because there is less at the intake.

So what would happen in practice is that the vortech will pressurize the middle intake tube to some nominal pressure, say 7 psi max. Once it reaches the stillen, it will be further pressurized by some amount. The evidence of this operation can be seen in virtually any twincharged car(turbo into roots blower) For examples look into hillclimb cars or the lancia delta group b rally car.

Are there better ways to make power, yes. Will this be easy to get accurate air measurements, no. Will the car make more boost than with one supercharger, yes in fact probably more than an unbuilt engine can handle safely.

 

Lol! Everytime I get to this thread I think of this pic...
Still, good luck. I'm waiting to see a video of the car running.

 

page 11, last post

 

The forums are here to promote new ideas, and share ideas and information.
Is there a reason why you all are discouraging him so much...?

 

haters


i want to see how this setup works. I thought about it for a blink then realized the cost isn't worth trying it. I would just turbo the car and have more potential and a simpler setup when i need the extra power.

 

I'm not discouraging him, I'm just stating my thought. If you read my previous posts, you can see that I try to explain in technical terms the advantages and disadvantages. I hope this car comes along, it would be great to see. The OP will be very popular for being an innovator and for being unique, but to tell you the truth, having 2 superchargers, at least these 2, it will not help much. It will gain more low end power than having just 1 s/c.

Who is hating here? I don't need to hate. I told the OP numerous times that I want to see his car come thru. I'm in the same boat as you, if it was up to me, i'll go turbo and spend my money building the engine and fine tuning the car.

If you don't like the motivation poster, don't worry. I did not posted to discourage him, but to give my .02. I have posted the goods and the bads I've seen with this setup.

OP, I saw the vid you posted, I'm waiting to see one of the car once completed and running.