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850 T10 Kompressor

John V said:
Exactly. Turbos going up pipes cone-ing out one way and cone-ing down the other..
Anything in a desparete attempt at attention..

A plumbing version of this:

http://i.huffpost.com/gen/647933/thumbs/s-03929_PO_ESCHER_07-large640.jpg?4[/
But probably more like this:
[IMG]http://wondersinthedark.files.wordpress.com/2012/04/stooges-1.jpg]

And end up like this:
[IMG]http://cdn.static.ovimg.com/episode/304514.jpg][/QUOTE]

Everyone once in a while JohnV posts a gem.
Click to expand...
 
Here's a couple of pictures of my quad turbo setup... if you have questions, give me a call. :-P

1834823366274712911.jpg


1531776652143388987.jpg


OK, OK, it's not mine. Please don't call.

http://www.worldcarfans.com/1131011...-v8-volvo-960-looks-frighteningly/lowphotos#2
 
Dammit said:
If 5 is good, surely 10 is better?

You could make the intake pipework out of Mc Donalds straws.
Click to expand...

Mine goes to 11.

claymore said:
Ok what about 3 cylinders feeding a 15g and the other two feeding a 12t? I'm not trolling, I just want ideas, of alternatives to something like a garrett gtx,
Click to expand...

Bad idea. Way more work and hassle for no gain.

claymore said:
Click to expand...

So there's a supercharger under that intake log?
Or is I just twin-inter cooled?
 
grnmachine02 said:
I would disagree. I assume this is op's car.

<iframe width="420" height="315" src="//www.youtube.com/embed/Ko43CwZy06w" frameborder="0" allowfullscreen></iframe>
Click to expand...

Cool, but nothing you couldn't do with just a good turbo, a good tune, and supporting mods.

So I stand by my statement. It's interesting, and out of the box thinking, but what does it provide that hasn't been done before?
 
atrokz said:
Cool, but nothing you couldn't do with just a good turbo, a good tune, and supporting mods.

So I stand by my statement.
Click to expand...
Agreed, but then it would be like every other tuned 850, which is a bit difficult for attracting sponsorship, and cost wise my car has cost less than ?2000 to buy and build. my friend has paid nearly that amount for just a turbo and still has less power (at the moment)
 
claymore said:
Agreed, but then it would be like every other tuned 850, which is a bit difficult for attracting sponsorship, and cost wise my car has cost less than ?2000 pounds to buy and build. my friend has paid nearly that amount for just a turbo and still has less power (at the moment)
Click to expand...

That's a good explanation.

By rear engine, what do you mean? You have a motor out back too?

Every thought of electric drive for rears? use a two stroke to power up some capacitors. Would be the loudest thing on the planet..... haha.
 
atrokz said:
That's a good explanation.

By rear engine, what do you mean? You have a motor out back too?

Every thought of electric drive for rears? use a two stroke to power up some capacitors. Would be the loudest thing on the planet..... haha.
Click to expand...

The car has just been taken off the road to have another engine put in the back ready for next year, trying to get an unstressed 800bhp awd setup
 
Consider electric? Would be hybrid, then you could get sponsors that maybe wouldn't have considered it otherwise.

Talk to simey binker on here. He worked for an electric car company as an engineer, and knows a thing or two about electric drives.

Of course, this is just an idea. You may be set on another T5 or something, but electric torque driving the rears would be something to behold.
 
I wouldn't know where to start with electric power, but I might just go and have a Google session :)
 
atrokz said:
Consider electric? Would be hybrid, then you could get sponsors that maybe wouldn't have considered it otherwise.

Talk to simey binker on here. He worked for an electric car company as an engineer, and knows a thing or two about electric drives.

Of course, this is just an idea. You may be set on another T5 or something, but electric torque driving the rears would be something to behold.
Click to expand...

claymore said:
I wouldn't know where to start with electric power, but I might just go and have a Google session :)
Click to expand...

<iframe width="853" height="480" src="//www.youtube.com/embed/SVkJjt_Peg0" frameborder="0" allowfullscreen></iframe>
 
That's why I'm going to use 2 engines with around 400bhp each, (I already have map the front engine to kill the torque)
 
Duder said:
..
As an actual, functional system it will suck. As others have mentioned each turbo would only be getting 1/5th of the available exhaust energy, once every two engine revolutions, which causes several problems. Not to mention you've got a whole lot of added weight and efficiency losses by mutliplying turbo x5. A really good modern turbo is only about 55% efficient as an overall machine...that is, you get 55% of the energy you put into it back out again as usable work. 5 small turbos are not 5 times as efficient as one large turbo, not even close. You'll have more energy losses through the turbines, bearing systems, and compressors and the engine will therefore be working much harder to produce the same power output as it would with one properly sized turbo.

Let's say you wanted to make 500 bhp (at the flywheel) from your 2.3L 5-cyl, nice round number right? That's 100hp per cylinder or 217 hp/L. You'd need something like 32 psi manifold pressure, or about 3.3 pressure ratio on a compressor map, to do so at sea level, with the system optimized and working really well. This is treating the turbo match as five individual 0.46L single-cylinder engines. The corrected mass flow rate through each compressor would end up being about 8 lb/min at 6000rpm on this engine.

Look at the compressor maps of small turbos available for sale and you'll see that none of them will be anywhere near optimal running at 8 lb/min and 3.3 PR. Taking the Garrett GT1241 as an example, it's peak efficiency is available at 8 lb/min but only up to about 2.7 pressure ratio. At 3.3 PR you'd be overspeeding the crap out of this little guy (like 300,000 rpm vs. 220,000 rpm speed limit). Overspeeding not only puts a tremendous strain on the turbo mechanically but makes it a really poor air compressor. Compressor efficiency will be terrible, intake air temps will be very high, and as a result the turbine will be working much harder, creating more backpressure and killing flow through the head (VE). As most people who have played around with turbos know, "turning up the boost" will only net you more power up to a point of diminishing returns with a particular turbo.

Taking that GT1241 down to a reasonable pressure ratio like 2.7:1 means that you'd be making about 24 psi intake manifold pressure. With a properly sized single turbo, that's about 430hp at the flywheel, and the compressor would be flowing about 36 lb/min. There are plenty of small-ish turbos that could do this all day long, without the need for the added complexity & weight of four more turbos, wastegates, charge plumbing, etc. The other advantage of a small single turbo would be that you could turn up the wick to 32 psi / 3.3 PR and make 500 flywheel hp, no problema. A GT3071R for example would be perfect for 500hp on this 2.3L.

It's true that a single small turbo will have less rotational intertia and need much less exhaust energy to spool up than a large one, and if you had a 460cc single (dirt bike for example) I'd say sure, go ahead and use a GT12 or equivalent and make something like 85hp. But multiplying that system by 5 just doesn't make much sense when the net effects will just be:

-lower peak hp potential
-increased backpressure
-increased charge air temps
-increased fuel consumption
-added weight
-5x the amount of crap to fail

vs. a properly sized single turbo system at the same power level.
Click to expand...
what i was about to say.

but do it for the giggles
 
With all that money spent, might as well do a custom V8 B8444s with twins if you want to stay Volvo. Or an LSX single turbo, or huge blower. Both can make 800 without the headache, and would cost less. You're looking at 15k just for all the custom mounting and reinforcement alone. Then the headache starts of keeping both engines in tandem and synchronized. Why you have a map to kill torque is beyond me. I love torque. Makes me sh!t my pants.
 
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