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Originally Posted by SpeedOfLife
(Post 10478464)
What kind of high speed are you talking, mach 4? :rofl: For a land speed record trial it might matter a little. How little I'm not sure, but how many high speed road races and drags are held below freezing temps? That's rhetorical, I am actually interested in knowing how much difference it would make at 250mph wind speed between 100*F and 50*F, to throw some numbers out there.
Power required for an RX-7 to maintain the following speeds (just basic aerodynamics - ignores other factors like tire traction, drivetrain loss, vehicle weight, road grade, etc.): 250mph @ 50F = 648.7hp 250mph @ 100F = 590.7hp 100mph @ 50F = 41.5hp 100mph @ 100F = 37.8hp 50mph @ 50F = 5.2hp 50mph @ 100F = 4.7hp As you can see, the air density (temperature and pressure) doesn't make much difference at street speeds, but it starts to have more effect once you are on the Formula One track. Speed is obviously the real killer here, as each time you 2x your speed it takes 8x more hp.
Originally Posted by P_Lav
(Post 10483494)
This is incorrect, turbochargers are centrifugal compressors driven by a turbine that spins from hot expanding exhaust gases flowing through the blades, thus, alot of heat is conducted through the turbocharger assembly into the intake of air as the turbo compresses it.
http://www.firepistons.com/
Originally Posted by KKMpunkrock2011
(Post 10479799)
ha ha, that's epic!.
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Originally Posted by Evil Aviator
(Post 10484125)
Assuming I didn't screw up any calculations with my highly-advanced Windows calculator, lol ...
Power required for an RX-7 to maintain the following speeds (just basic aerodynamics - ignores other factors like tire traction, drivetrain loss, vehicle weight, road grade, etc.): 250mph @ 50F = 648.7hp 250mph @ 100F = 590.7hp 100mph @ 50F = 41.5hp 100mph @ 100F = 37.8hp 50mph @ 50F = 5.2hp 50mph @ 100F = 4.7hp As you can see, the air density (temperature and pressure) doesn't make much difference at street speeds, but it starts to have more effect once you are on the Formula One track. Speed is obviously the real killer here, as each time you 2x your speed it takes 8x more hp. While the turbine does contribute a bit to the heat, it is actually the compressor that heats the air the most during boost. When air is compressed, its temperature rises. For example, at 15psi boost a typical turbocharger compressor will add about 150-200F to the intake air temperature. You can really see this temperature rise effect if you go to this link on fire pistons. The compression of a fire piston heats the air up to about 500-800F in order to start a fire... no hot exhaust-driven turbine needed. ;) http://www.firepistons.com/ +1 :lol: |
and unless rotary rocket 88 steered me wrong he told me that the s5 upper intake mani with the second and primary rails and bolt on with little modification, actually 10 plus people where on that thread and all verified the hp gains with dyno maps, i already have somone on here thats going to sell me everything i need to do the swap. idk bout you but RR88 is very respectable....
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Originally Posted by 7dust
(Post 10479765)
Fuck an NA Intercooler! :D This is a TRUE Cold Air Intake for an NA. Car is a half bridgeport - four port engine.
Window AC Unit running on a gasoline generator mounted in the hatch. The chilled air is piped directly into the intake via PVC piping. http://i9.photobucket.com/albums/a70...09-UG-1114.jpg http://i9.photobucket.com/albums/a70...s/IMG_0600.jpg http://i9.photobucket.com/albums/a70...09-UG-1097.jpg http://i9.photobucket.com/albums/a70...s/IMG_0592.jpg Oh yeah - we did get around to dyno-ing the setup. You actually LOSE 10 HP due to the restriction of the PVC. The laughing, pointing, giggling, and general ass-clown-ery is WAY worth the HP loss tho. :D http://i9.photobucket.com/albums/a70...s/IMG_0692.jpg |
Just think if you could introduce ice cold AC through the turbo system though
..Boosted COLD air!.. |
god, i made a thread with that idea like 10 years ago... still would work but i wonder if it's worth the weight of having an auxiliary A/C system to power it. lol
issue with their system is the sheer length and complexity of it, far too much restrictions for the air to be pulled freely through. like say a standard TMIC but the intercooler is a 2 way evap core/intercooler. course most people just use a cold water box for drag racing purposes. |
1 Attachment(s)
:lol: Attachment 753556
for this to work properly, you must have an exhaust like this lada http://stupidlookingcars.freecarblog.../03/lada-4.jpg |
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