Drivetrain M7 DFIC
Originally Posted by Cooper_Si
Interesting idea regarding the vortech chargers, im originally from VW world and seen them fitted to Corrados and the like. I also owned a VW Polo G40 with a G-Lader supercharger, same as a G60 but slightly smaller. The only problem was that they need refurbishing every 50,000 miles. Quite costly. But the sound was gorrrrrgeous. BUT anyway i cant see where the space is in a MINI engine bay to fit one of these centrifugal chargers :(
Bear in mind those 2 big air horns for the IC would go. All the current induction plumbing would have to go and you could probably use a smaller IC than OEM.
Believe me if someone can plumb a turbo into the current setup, as has been done, making a Vortech or whatever fit wouldn't be any harder.
The only reason it hasn't been done is money.
Originally Posted by Will @ M7 Tuning
Now, tell me how many intercoolers have 0 pressure loss across the core? Is mass flow really constant? I think you'll agree that the answer is most likely no. So, in your calculation of thermal efficiency, you do not take into account the possibility that pressure may drop across the core. So take the condition where there is a 100% thermal transference to the ambient air as it flows through the core. Now, with a pressure drop it certainly possible to have, say, another 2% decrease in temperature. So now when you measure the air coming out of the intercooler, you would have a 102% thermal efficiency, because you didn't include pressure as a component of the calculation.
Now you're hypothesizing that due to a pressure loss inside the intercooler, the intake charge expands and its temperature decreases, making the intake charge cooler than ambient.
My question to you is: If you have an intercooler that is SO efficient that it can transfer heat at will, and if the nature of intercoolers is to pull the intake temp towards ambient, why wouldnt the cooler intake temp actually cool the ambient air passing over the intercooler? Does your intercooler somehow only transfer heat in one direction?
Originally Posted by macncheese
So if you've got a 100% efficient air to air intercooler that would mean that you could transfer heat between to fluids easily and almost instantaneously. The temperature of those two fluids would want to reach thermal equilibrium (that means the same temperature). The temperature that they equalize at is usually somewhere inbetween the two temperatures, depending on the mass of the two fluids BUT because the air passing over the intercooler is for the most part infinite compared to the air in the intake charge, we can approximate that the air would reach ambient temperature, thus making the intercooler 100% efficient. I dont think any of the above is in question but i spelled it out for the sake of those who arent geeks.
Now you're hypothesizing that due to a pressure loss inside the intercooler, the intake charge expands and its temperature decreases, making the intake charge cooler than ambient.
My question to you is: If you have an intercooler that is SO efficient that it can transfer heat at will, and if the nature of intercoolers is to pull the intake temp towards ambient, why wouldnt the cooler intake temp actually cool the ambient air passing over the intercooler? Does your intercooler somehow only transfer heat in one direction?
Now you're hypothesizing that due to a pressure loss inside the intercooler, the intake charge expands and its temperature decreases, making the intake charge cooler than ambient.
My question to you is: If you have an intercooler that is SO efficient that it can transfer heat at will, and if the nature of intercoolers is to pull the intake temp towards ambient, why wouldnt the cooler intake temp actually cool the ambient air passing over the intercooler? Does your intercooler somehow only transfer heat in one direction?
Twiddling thumbs
waiting for the answer
Originally Posted by etalj
my head hurts



. Cheers on this fine 23 hour day of ours, everyone!
First, I'm not hypothesizing that a pressure loss will result in a drop in temperature. It will happen without a doubt. Go play with a can of compressed air and write up a report on your findings. Second, I never said anything about a pressure loss inside the intercooler except where inside involves the end caps. In most cases the drop in both will occur as the air exits the intercooler proper. It does not need to be instantaneous in heat transfer, as long as the air is as cool as possible by the end of the operational area of the intercooler, i.e. where the fins end. It's obvious that there will be a gradient established. If you hadn't already figured it out, that's why a bigger one typically works better. Your assumption that it needs be instantaneous is, well, a stupid one. At least you know what thermal equilibrium is. Mostly.
And since you are being SO nice about it, I'll be nice and answer your question. An intercooler is built to maximize the surface are of contact between the charge air and the ambient air. The end caps and intake horns are, not surpisingly, not. So where you would likely achieve the drop in pressure and temperature occurs outside of the intercooler's operating area where heat transfer will be least efficient.
If you'd stop to think about it for a minute, you'd make some connections here. I know you are historically fond of the "I'm smarter than you" game, and I know you are a pretty intelligent fellow, so at this point I can only assume you are arguing for arguments sake. As I've said, if you can have an intercooler that is 100% efficient at cooling the air passing through it, it will be ambient temperature on exit. If you have a pressure drop, and it should be fairly obvious that it is unlikely that the pressure drop will occur in the unchanging internal volume of the active area, than it will occur as the air enters into the end and horn on it's way to the manifold. After you leave the operational turbolator laden area, you have a much smaller surface area to draw temperature away from either the charge volume or the ambient air. Not to mention the fact that not a large volume, typically, of ambient air will pass over the horns, so the rate of heat transfer in either direction is slowed by design.
So to answer your questions directly. By design, no. That's why you use a dirverter. And of course it does, from hotter to cooler.
Next?
And since you are being SO nice about it, I'll be nice and answer your question. An intercooler is built to maximize the surface are of contact between the charge air and the ambient air. The end caps and intake horns are, not surpisingly, not. So where you would likely achieve the drop in pressure and temperature occurs outside of the intercooler's operating area where heat transfer will be least efficient.
If you'd stop to think about it for a minute, you'd make some connections here. I know you are historically fond of the "I'm smarter than you" game, and I know you are a pretty intelligent fellow, so at this point I can only assume you are arguing for arguments sake. As I've said, if you can have an intercooler that is 100% efficient at cooling the air passing through it, it will be ambient temperature on exit. If you have a pressure drop, and it should be fairly obvious that it is unlikely that the pressure drop will occur in the unchanging internal volume of the active area, than it will occur as the air enters into the end and horn on it's way to the manifold. After you leave the operational turbolator laden area, you have a much smaller surface area to draw temperature away from either the charge volume or the ambient air. Not to mention the fact that not a large volume, typically, of ambient air will pass over the horns, so the rate of heat transfer in either direction is slowed by design.
So to answer your questions directly. By design, no. That's why you use a dirverter. And of course it does, from hotter to cooler.
Next?
Originally Posted by macncheese
So if you've got a 100% efficient air to air intercooler that would mean that you could transfer heat between to fluids easily and almost instantaneously. The temperature of those two fluids would want to reach thermal equilibrium (that means the same temperature). The temperature that they equalize at is usually somewhere inbetween the two temperatures, depending on the mass of the two fluids BUT because the air passing over the intercooler is for the most part infinite compared to the air in the intake charge, we can approximate that the air would reach ambient temperature, thus making the intercooler 100% efficient. I dont think any of the above is in question but i spelled it out for the sake of those who arent geeks.
Now you're hypothesizing that due to a pressure loss inside the intercooler, the intake charge expands and its temperature decreases, making the intake charge cooler than ambient.
My question to you is: If you have an intercooler that is SO efficient that it can transfer heat at will, and if the nature of intercoolers is to pull the intake temp towards ambient, why wouldnt the cooler intake temp actually cool the ambient air passing over the intercooler? Does your intercooler somehow only transfer heat in one direction?
Now you're hypothesizing that due to a pressure loss inside the intercooler, the intake charge expands and its temperature decreases, making the intake charge cooler than ambient.
My question to you is: If you have an intercooler that is SO efficient that it can transfer heat at will, and if the nature of intercoolers is to pull the intake temp towards ambient, why wouldnt the cooler intake temp actually cool the ambient air passing over the intercooler? Does your intercooler somehow only transfer heat in one direction?
Originally Posted by SpiderX
enough of the BS..... when will we see numbers.....
I got a PM from a friend that said that he felt the M7 would only be better at speed... that the Alta due to its sheer size will perform better at lower speeds..... what do you all think of this?
I got a PM from a friend that said that he felt the M7 would only be better at speed... that the Alta due to its sheer size will perform better at lower speeds..... what do you all think of this?
If you guys want more useless information...I'm more than happy to oblige...
-I wiped my wheels today
-hit three spring bugs while driving
-used 15 kleenex to wipe snot off my 2 year old nose
-drove 115 mile going nowhere in my Mini
-I'm down to one mark on the gas tank
-I think my right sinus is infected and my right ear is ringing because of that
-I went to the bathroom...
-I wiped my wheels today
-hit three spring bugs while driving
-used 15 kleenex to wipe snot off my 2 year old nose
-drove 115 mile going nowhere in my Mini
-I'm down to one mark on the gas tank
-I think my right sinus is infected and my right ear is ringing because of that
-I went to the bathroom...
Originally Posted by MSFITOY
If you guys want more useless information...I'm more than happy to oblige...
-I wiped my wheels today
-hit three spring bugs while driving
-used 15 kleenex to wipe snot off my 2 year old nose
-drove 115 mile going nowhere in my Mini
-I'm down to one mark on the gas tank
-I think my right sinus is infected and my right ear is ringing because of that
-I went to the bathroom...
-I wiped my wheels today
-hit three spring bugs while driving
-used 15 kleenex to wipe snot off my 2 year old nose
-drove 115 mile going nowhere in my Mini
-I'm down to one mark on the gas tank
-I think my right sinus is infected and my right ear is ringing because of that
-I went to the bathroom...
Steve
To continue further off topic....
I was taking care of Alison (just turned 16 months) yesterday. When she doesn't think it's time to change her diaper, she fights it like you wouldn't believe. Needless to say, yesterday I was wiping baby poo off of her feet, fingers and every other part that could get into the mess. Yuck!
Matt
That BS.... Baby Sh*t!
Matt
That BS.... Baby Sh*t!
Originally Posted by Dr Obnxs
I was taking care of Alison (just turned 16 months) yesterday. When she doesn't think it's time to change her diaper, she fights it like you wouldn't believe. Needless to say, yesterday I was wiping baby poo off of her feet, fingers and every other part that could get into the mess. Yuck!
Matt
That BS.... Baby Sh*t!
Matt
That BS.... Baby Sh*t!






want a sample?