| 900 HP street car ... - Click HERE for Original Thread |
| mwdguy |
not everyones cup of tea here but damn ...
clicky |
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| 2003specv |
| Mmmmm!!!!! Sexy, that gave me chills.:thumbup: |
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| LeadSled |
Sweet jesus :eek: I love it when he gets squirrely in like 3rd gear and all you hear is "ohhhh!"
There's no better sound than turbo'd V8's either :drool: How many cubes is pushing those 57's with? That is just bad ass but the thing needs more tire, if that's possible lol. |
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| mwdguy |
quote:
Originally posted by LeadSled
Sweet jesus :eek: I love it when he gets squirrely in like 3rd gear and all you hear is "ohhhh!"
There's no better sound than turbo'd V8's either :drool: How many cubes is pushing those 57's with? That is just bad ass but the thing needs more tire, if that's possible lol.
4.6l SOHC (281 ci) |
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| beatshack |
!!
haha.. too bad he can't get the 900whp to the ground :( |
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| mwdguy |
quote:
Originally posted by beatshack
!!
haha.. too bad he can't get the 900whp to the ground :(
:rolleyes: |
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| SketchifisT |
| that is sweet and most time not my cup of tea but love it ... supercharger whine for the win tho :( only thing i wish it had |
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| mwdguy |
quote:
Originally posted by SketchifisT
that is sweet and most time not my cup of tea but love it ... supercharger whine for the win tho :( only thing i wish it had
i would rather hear twins spool like that, and I had a blown stang. |
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| LeadSled |
Turbo V8 over SC any day for me too.
Stock displacement? I'm thinking he's running 25-30 psi then?
You got rid of the Cobra Snugs? I hadn't noticed the Cummins Ram thing by your ride before. |
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| mwdguy |
quote:
Originally posted by LeadSled
Turbo V8 or SC any day for me too.
Stock displacement? I'm thinking he's running 25-30 psi then?
You got rid of the Cobra Snugs? I hadn't noticed the Cummins Ram thing by your ride before.
Im not snugs lol |
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| LeadSled |
| :smack: Whoops, I meant you, but you had a SC'd Mach1 or Boss didn't you? The red one I remember seing pics of. |
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| mwdguy |
quote:
Originally posted by LeadSled
:smack: Whoops, I meant you, but you had a SC'd Mach1 or Boss didn't you? The red one I remember seing pics of.
nope ... was a mineral grey 01 GT vert.
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| icydude |
quote:
Originally posted by LeadSled
Turbo V8 over SC any day for me too.
Stock displacement? I'm thinking he's running 25-30 psi then?
You got rid of the Cobra Snugs? I hadn't noticed the Cummins Ram thing by your ride before.
what boost he is running is completly pointless to guess....
he could be runing 50 psi and flow 250 cfm
or
he could be running 4 psi and flow 250 cfm
more boost doesnt = more power.
14 psi on a t28 sr20 turbo
vs
14 psi on a GT42R
Way different |
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| LeadSled |
| Well never mind then lol. Nice looking stang though, I bet that sucker hauled... Which SC system did you have, and did you ever take it down the 1320? |
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| LeadSled |
quote:
Originally posted by icydude
what boost he is running is completly pointless to guess....
he could be runing 50 psi and flow 250 cfm
or
he could be running 4 psi and flow 250 cfm
more boost doesnt = more power.
14 psi on a t28 sr20 turbo
vs
14 psi on a GT42R
Way different
He's running twin 57's... And if you know the rwhp you're making and the displacement of the engine, then you can figure out the PR and CFM. |
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| icydude |
twin 57 what?
a/r's at all for the cold side? |
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| LeadSled |
A/R's aren't going to make a noticeable difference in peak power unless you are choking off on the top end.
If I have a 4.6L and I want to make 900rwhp and I know I'm going intercooled, there's a basic window of boost it'll take to make that power. CFM is a function of the boost and the displacement. |
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| Markgase2000 |
quote:
Originally posted by mwdguy
i would rather hear twins spool like that, and I had a blown stang.
Haha I remember your SC Convertible , I almost took it for a rip but I had no time :(
Oh and I think for the fact that the guy has some time tryin to keep it straight and the way it suprises him...... Well I think the power is still new to him so it takes some getting used to for one. When he does get used to it YEEEEHAAAAW! |
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| edmCRX |
damn that thing is sweet.
as much as I like to knock domestics, that is definately something I would add to my arsenal if I had the coin.
nothing like those lopey v8's with a little FI ;). |
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| BlueTurboEGG |
quote:
Originally posted by LeadSled
Turbo V8 over SC any day for me too.
Go here: video.google.com
Then type in "skyline topsecret v35" it's a 15 minute vid, but it's worth the watch, pay no attention to the R34, that's not what we're here to see, wait for the V35 (a G35 Coupe' on our shores) it's white and doesn't show up until 3minutes in.
'Nuff said :thumbup: Not arguing, just solidifying your point :) |
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| icydude |
quote:
Originally posted by LeadSled
A/R's aren't going to make a noticeable difference in peak power unless you are choking off on the top end.
If I have a 4.6L and I want to make 900rwhp and I know I'm going intercooled, there's a basic window of boost it'll take to make that power. CFM is a function of the boost and the displacement.
no cfm is a fuction of flow and displacement.
boost once again is different on every turbo there is. |
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| LeadSled |
CFM IS FLOW..... Cubic feet per minute is a rate of flow.
W/E, I'll leave it at that.
quote:
Originally posted by BlueTurboEGG
Go here: video.google.com
Then type in "skyline topsecret v35" it's a 15 minute vid, but it's worth the watch, pay no attention to the R34, that's not what we're here to see, wait for the V35 (a G35 Coupe' on our shores) it's white and doesn't show up until 3minutes in.
'Nuff said :thumbup: Not arguing, just solidifying your point :)
Thanks for the vid, that was crazy... 340km/h :eek: Sounded awesome too. |
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| icydude |
technical time
(Displacement x RPM x VE x PR) / 5660 = CFM
so i will use a rb26 for an example
(2.6L x 8000RPM x 90%VE x 2.0PR) /5660 = 661.48 CFM or 46.35 lb/min |
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| LeadSled |
Technical time is what engineers live for.... Like I said CFM is a function of boost and displacement (the "displacement" and "PR" in the formula). In engineering terms it's called a volumetric flow rate. On a given engine, it's impossible to have a high PR without having a high CFM because they are functions of one another!
I know what you are trying to say, but it doesn't really matter in this case. If they've done their job choosing a turbo(turbos) that's matched for their application, the turbo's efficiency will be somewhere between 75-80%. and it plays a minor role in peak power numbers.
I've already gone through this headache on my current project. I'm slowly scraping together parts for a built EFI'd 440 that will be fed by a large-midframe like the GT42-82T or a large frame like the PT91.5 ... if I had the time/money it'd already be done ;)
If you don't want to have to do the turbo sizing calculations by hand, these guys have a decent program worked out (Turbocalc):
http://www.turbofast.com.au/freesoftware.html |
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| icydude |
| they have turbos with a 80% effiency.....damn |
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| BlueTurboEGG |
quote:
Originally posted by LeadSled
Thanks for the vid, that was crazy... 340km/h :eek: Sounded awesome too.
Welcome, it's my fav as well. My friends sister is in Japan currently... I'm trying to get her to get me Top Secrets DVD :) |
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| tokes |
Keep in mind this car was dyno'ed in New Mexico at 6000+ FEET, SAE corrected. It's not unheard of to see a SAE correction factor of 1.25 when you're dyno'ing up there, so in this video the car is "only" making about 700 RWHP at that elevation.
The motor is actually a 300 cubic inch stroker, and the turbos are T3/TO4E 57-trim's with stage 3 turbine wheels in .63 A/R externally wastegated housings. |
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| 95EagleAWD |
| For a boosted car, elevation makes very little difference in the power you put out. They're not just sucking air in at a vacuum rate, but compressing it and pulling in more, so air density has very little to do with their power. My car would probably run the same here at Bud Park as it would at Race City (temps and all others considered), and the difference of elevation there is over 1000 feet. |
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| icydude |
Highest Point The highest point in New Mexico is Wheeler Peak at 13,161 feet above sea level.
Lowest Point The lowest point in New Mexico is 2,842 feet above sea level at the Red Bluff Reservoir.
Mean Elevation The Mean Elevation of the state of New Mexico is 5,700 feet above sea level.
considering bud park is 2200 and NM lowest is 2800 yeah damn. |
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| Markgase2000 |
quote:
Originally posted by icydude
Highest Point The highest point in New Mexico is Wheeler Peak at 13,161 feet above sea level.
Lowest Point The lowest point in New Mexico is 2,842 feet above sea level at the Red Bluff Reservoir.
Mean Elevation The Mean Elevation of the state of New Mexico is 5,700 feet above sea level.
considering bud park is 2200 and NM lowest is 2800 yeah damn.
Hey smarty , since you know so much,,,,,,,,, whats the lowwest land elevation in the world? Below sea level.
Oh and damnit! Why does CHUCK NORRIS kick ass so much? |
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| tokes |
quote:
Originally posted by 95EagleAWD
For a boosted car, elevation makes very little difference in the power you put out. They're not just sucking air in at a vacuum rate, but compressing it and pulling in more, so air density has very little to do with their power. My car would probably run the same here at Bud Park as it would at Race City (temps and all others considered), and the difference of elevation there is over 1000 feet.
The car was dyno'ed in New Mexico, at an elevation of 6000+ feet. The Dynojet software sees this elevation, and uses an algorithm to "correct" that number to what it would be back down at sea level. It's not uncommon in New Mexico to see a correction factor of 1.25, so that means the SAE dyno readout that it spits out for you is the actual horsepower made multiplied by 1.25. I'm more or less agreeing with what you said, that the difference in horsepower over large elevation changes is going to be greatly exagerated on a turbocharged/supercharged car with the SAE or STD correction factors. |
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| icydude |
quote:
Originally posted by Markgase2000
Hey smarty , since you know so much,,,,,,,,, whats the lowwest land elevation in the world? Below sea level.
Oh and damnit! Why does CHUCK NORRIS kick ass so much?
that would be the shoreline of the Dead Sea Mark.....you learn that only in gr 4 haha;) |
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