top speed 112 on a turbo?????
07-06-04, 03:17 AM
#76
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Some shitty pics I just took of the dyno's from last year.
Now if I can figure out how to send this video over to you.
Now if I can figure out how to send this video over to you.
07-06-04, 03:18 AM
#77
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Originally posted by boostin13b
But it sounds like nobody wants to see any proof, they just want to say "Theretically it shouldn't be able to happen".
But it sounds like nobody wants to see any proof, they just want to say "Theretically it shouldn't be able to happen".
07-06-04, 03:20 AM
#78
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Originally posted by fusion-turbo
Stock turbo hitting 19psi boost spike.... not blowing the engine or damaging the turbo... stock turbo, NO WAY you're making that much boost and having your engine live to tell about it, much less doing it MULTIPLE times.
Bottom line: FC rx7's were not made for such speeds. The vehicle drivetrain is not balanced enough. Ive read that you need some serious upgrading to acheive your 200mph speed without ratling apart your tranny, driveshaft and diff. You know that regardless of rpm that your output shaft and drivshaft are spinning incredibly faster than your rpm as you progress into 5th gear... it escapes me how you could acheive those speeds, and frankly scares me that you would attempt this without and upgraded driveline.
Oh yea... did i mention impossible? period
Stock turbo hitting 19psi boost spike.... not blowing the engine or damaging the turbo... stock turbo, NO WAY you're making that much boost and having your engine live to tell about it, much less doing it MULTIPLE times.
Bottom line: FC rx7's were not made for such speeds. The vehicle drivetrain is not balanced enough. Ive read that you need some serious upgrading to acheive your 200mph speed without ratling apart your tranny, driveshaft and diff. You know that regardless of rpm that your output shaft and drivshaft are spinning incredibly faster than your rpm as you progress into 5th gear... it escapes me how you could acheive those speeds, and frankly scares me that you would attempt this without and upgraded driveline.
Oh yea... did i mention impossible? period
07-06-04, 03:23 AM
#79
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Originally posted by NZConvertible
It's not "theoretical" if it's long-proven. Do you have any explanation as to how you're able to break the laws of physics?
It's not "theoretical" if it's long-proven. Do you have any explanation as to how you're able to break the laws of physics?
07-06-04, 03:30 AM
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And you think you're the first one, in all of your infinite wisdom, although there are thousands of other FC fanatics out there trying to acheive the same goal. The laws of pysics just DONT lie, there are people out there that use high tech computers, exact weight balancing and performace mods to get their cars to be as fast as PYSICALLY POSSIBLE. You think by throwing on a few aftermarket diddly-doos that your car will now hit 200mph... with only 249HP? Come on, if you were going to lie at least say you had 500...
And 22psi on a stock turbo... wow. The mazda guys did not design the turbo to hold near that much boost, and i think they did it for a reason. If you want more boost you go aftermarket, ive heard the highest possible boost SAFELY on a stock turbo is 15psi max... im not calling you a lyer because you hit 22psi, that is very acheivable. But running it that way for a year and not hurting anything.... i just dont believe it.
And 22psi on a stock turbo... wow. The mazda guys did not design the turbo to hold near that much boost, and i think they did it for a reason. If you want more boost you go aftermarket, ive heard the highest possible boost SAFELY on a stock turbo is 15psi max... im not calling you a lyer because you hit 22psi, that is very acheivable. But running it that way for a year and not hurting anything.... i just dont believe it.
07-06-04, 03:40 AM
#81
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Originally posted by fusion-turbo
And you think you're the first one, in all of your infinite wisdom, although there are thousands of other FC fanatics out there trying to acheive the same goal. The laws of pysics just DONT lie, there are people out there that use high tech computers, exact weight balancing and performace mods to get their cars to be as fast as PYSICALLY POSSIBLE. You think by throwing on a few aftermarket diddly-doos that your car will now hit 200mph... with only 249HP? Come on, if you were going to lie at least say you had 500...
And 22psi on a stock turbo... wow. The mazda guys did not design the turbo to hold near that much boost, and i think they did it for a reason. If you want more boost you go aftermarket, ive heard the highest possible boost SAFELY on a stock turbo is 15psi max... im not calling you a lyer because you hit 22psi, that is very acheivable. But running it that way for a year and not hurting anything.... i just dont believe it.
And you think you're the first one, in all of your infinite wisdom, although there are thousands of other FC fanatics out there trying to acheive the same goal. The laws of pysics just DONT lie, there are people out there that use high tech computers, exact weight balancing and performace mods to get their cars to be as fast as PYSICALLY POSSIBLE. You think by throwing on a few aftermarket diddly-doos that your car will now hit 200mph... with only 249HP? Come on, if you were going to lie at least say you had 500...
And 22psi on a stock turbo... wow. The mazda guys did not design the turbo to hold near that much boost, and i think they did it for a reason. If you want more boost you go aftermarket, ive heard the highest possible boost SAFELY on a stock turbo is 15psi max... im not calling you a lyer because you hit 22psi, that is very acheivable. But running it that way for a year and not hurting anything.... i just dont believe it.
As for the 22 PSI thing, I know they weren't meant to be run like that. They start blowing hot air after 12 or 13 PSI and then with the stock IC it's almost useless. But that wasn't the point, I did it to see just how long I could do it. In the end I ended up with a cracked apex seal after 25K of driving it like that. Now you have to understand, I wasn't driving around boosting 22 pounds everywhere I went and in every gear. That was like a couple times a month just racing people and having fun. It was my daily beater and another experimental car. I know whenever I get a T2, I can just pull the wastegate and call it good as long as I have a fuel pump, You can do it with the stock one, I just wouldn't recommend it.
And yes I know I should go with an aftermarket turbo, but again, it doesn't look like you read the whole topic. I have a 60-1 or a T58 ready to be thrown on once I'm done messing around with this and getting as fast as I can get with the stock turbo.
07-06-04, 03:53 AM
#82
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came back.........i had to.....now i'm off to bed again....send me the vid....still doesn't fit together how a RELATIVELY stock TII hit 180+ mph......it doesn't fit.....for ***** and giggles....take a pic of your engine bay....and please focus in on the turbo.......and just to be a dick about it can you use a 1/2 full glass of water with a lemon wedge and a straw going through the lemon.....please.
Last edited by Madrx7racer; 07-06-04 at 03:56 AM.
07-06-04, 03:53 AM
#83
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Originally posted by boostin13b
That speed was around 7300-7500 RPM...
That speed was around 7300-7500 RPM...
Maybe you don't know how to put the laws of physics into play.
But if you don't believe me, have a read of this page. Note the important bit about the relationship between power and speed.
07-06-04, 03:57 AM
#84
Rotary Enthusiast
Originally posted by NZConvertible
I missed this earlier. 7500rpm in 5th with stock gearing and tires is only 170mph, and with your slightly shorter tires it'll actually be a bit less than that. If that truely is your top speed then power-wise you're still a fair way off 180mph.
I missed this earlier. 7500rpm in 5th with stock gearing and tires is only 170mph, and with your slightly shorter tires it'll actually be a bit less than that. If that truely is your top speed then power-wise you're still a fair way off 180mph.
07-06-04, 03:57 AM
#85
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Originally posted by NZConvertible
I missed this earlier. 7500rpm in 5th with stock gearing and tires is only 170mph, and with your slightly shorter tires it'll actually be a bit less than that. If that truely is your top speed then power-wise you're still a fair way off 180mph.
Oh I assure you I do. But if you don't believe me, have a read of this page. Note the important bit about the relationship between power and speed.
I missed this earlier. 7500rpm in 5th with stock gearing and tires is only 170mph, and with your slightly shorter tires it'll actually be a bit less than that. If that truely is your top speed then power-wise you're still a fair way off 180mph.
Oh I assure you I do.
But if you don't believe me, have a read of this page. Note the important bit about the relationship between power and speed.
07-06-04, 03:59 AM
#86
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i used the calculator on the link i posted earlier and got 185mph running his tires with the .719 5th gear, 4.1 rear at 7500rpm. i also mentioned that no one would believe he got to 7500rpm in 5th gear. and as for stock turbo, i'm just amazed.
07-06-04, 03:59 AM
#87
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Originally posted by Madrx7racer
came back.........i had to.....now i'm off to bed again....send me the vid....still doesn't fit together how a RELATIVELY stock TII hit 180+ mph......it doesn't fit.....for ***** and giggles....take a pic of your engine bay....and please focus in on the turbo.......and just to be a dick about it can you use a 1/2 full glass of water with a lemon wedge and a straw going through the lemon.....please.
came back.........i had to.....now i'm off to bed again....send me the vid....still doesn't fit together how a RELATIVELY stock TII hit 180+ mph......it doesn't fit.....for ***** and giggles....take a pic of your engine bay....and please focus in on the turbo.......and just to be a dick about it can you use a 1/2 full glass of water with a lemon wedge and a straw going through the lemon.....please.
07-06-04, 04:00 AM
#88
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Originally posted by boostin13b
That's funny, someone already did this calculation earlier and came up with around 188 to 185 MPH. Which is what my speedo was near, and also what the dyno said.
That's funny, someone already did this calculation earlier and came up with around 188 to 185 MPH. Which is what my speedo was near, and also what the dyno said.
07-06-04, 04:00 AM
#89
Rotary Enthusiast
Help me figure out how to post this video up so everyone can stop bitching. And the car pulls great in 5th. I already offered to take someone on a ride to prove if anyone knows someone in denver, and if they do, they probably already know me or of me.
07-06-04, 04:01 AM
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Originally posted by boostin13b
Will do tomorrow. It's really messy right now because I have everything rigged to run right now until I get the FD mani polished and on to clean everything up. The video was too big to upload through mail, any other idea's?
Will do tomorrow. It's really messy right now because I have everything rigged to run right now until I get the FD mani polished and on to clean everything up. The video was too big to upload through mail, any other idea's?
07-06-04, 04:03 AM
#91
Rotary Enthusiast
Originally posted by Madrx7racer
I still don't think the dyno speeds are not accurate either.....like it was said earlier: therre are other factors to take into consideration.......wind resistance and the tires/rims you are running......it might have matched your speedo but in real life applications(outside the dyno) its accuracy will decrease. as I said earlier tires alone throw the speedo off.
I still don't think the dyno speeds are not accurate either.....like it was said earlier: therre are other factors to take into consideration.......wind resistance and the tires/rims you are running......it might have matched your speedo but in real life applications(outside the dyno) its accuracy will decrease. as I said earlier tires alone throw the speedo off.
07-06-04, 05:01 AM
#92
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Originally posted by Madrx7racer
I still have a hard time with this because the stock car has a hard time pulling in 5th gear.....
I still have a hard time with this because the stock car has a hard time pulling in 5th gear.....
Originally posted by boostin13b
That's funny, someone already did this calculation earlier and came up with around 188 to 185 MPH. Which is what my speedo was near, and also what the dyno said.
That's funny, someone already did this calculation earlier and came up with around 188 to 185 MPH. Which is what my speedo was near, and also what the dyno said.
Stock S4 5th gear ratio: 0.762: 1 (not 0.719:1, that's S5)
Stock diff ratio: 4.1:1
Stock tire rolling radius: 300mm or 0.3m (i.e measured from ground up to center)
7500rpm / 0.762 = 9843rpm driveshaft speed
9843 / 4.1 = 2401rpm wheel speed
2401rpm x 2? / 60 = 251.4rad/s
251.4 x 0.3 = 75.42m/s
75.4m/s x 3.6 = 271.5km/h
271.5 / 1.61 = 168.7mph
Call it 170mph...
If you redo the calc with a 0.719:1 5th gear ratio you do get 179mph, but that's not what we've got.
Last edited by NZConvertible; 07-06-04 at 05:12 AM.
07-06-04, 07:48 AM
#94
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Originally posted by NZConvertible
249rwhp is not exactly stock...
Check the maths for yourself then:
Stock S4 5th gear ratio: 0.762: 1 (not 0.719:1, that's S5)
Stock diff ratio: 4.1:1
Stock tire rolling radius: 300mm or 0.3m (i.e measured from ground up to center)
7500rpm / 0.762 = 9843rpm driveshaft speed
9843 / 4.1 = 2401rpm wheel speed
2401rpm x 2? / 60 = 251.4rad/s
251.4 x 0.3 = 75.42m/s
75.4m/s x 3.6 = 271.5km/h
271.5 / 1.61 = 168.7mph
Call it 170mph...
If you redo the calc with a 0.719:1 5th gear ratio you do get 179mph, but that's not what we've got.
249rwhp is not exactly stock...
Check the maths for yourself then:
Stock S4 5th gear ratio: 0.762: 1 (not 0.719:1, that's S5)
Stock diff ratio: 4.1:1
Stock tire rolling radius: 300mm or 0.3m (i.e measured from ground up to center)
7500rpm / 0.762 = 9843rpm driveshaft speed
9843 / 4.1 = 2401rpm wheel speed
2401rpm x 2? / 60 = 251.4rad/s
251.4 x 0.3 = 75.42m/s
75.4m/s x 3.6 = 271.5km/h
271.5 / 1.61 = 168.7mph
Call it 170mph...
If you redo the calc with a 0.719:1 5th gear ratio you do get 179mph, but that's not what we've got.
I'll measure the tire dimensions in a little while.
07-06-04, 08:36 AM
#95
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why doesnt anyone help him get this vid up, id love to see it, id also love to see you guys quit arguing, i also belive that 249 rwhp really isnt very much stock at all... why do you keep saying its a stock car, maybe stock turbo, but thats probablly about it... so give him a chance, get some ***** and help him with the vid
07-06-04, 11:50 AM
#98
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Originally posted by boostin13b
No there is no govenor on American models. I've been up to this point a few times. I'm shooting for 200 next. Just got the new intercooler in and once I get my new tires on I'll be out there ready to try again.
Don't give me **** about the tac, I dropped it in neutral before taking the pic, this was on back down.
No there is no govenor on American models. I've been up to this point a few times. I'm shooting for 200 next. Just got the new intercooler in and once I get my new tires on I'll be out there ready to try again.
Don't give me **** about the tac, I dropped it in neutral before taking the pic, this was on back down.
07-06-04, 11:54 AM
#99
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Originally posted by Scott 89t2
needle pointing straight down = it's broken....
I bet you $10 you broke it when you put your cool indiglow gauges on......
guess what, I can brake my speedo. rev my engine to 3000 in N and take a pic too.
there is only a very few number of cars that can hit 200... and your stock turbo FC sure as hell isn't one of them.
needle pointing straight down = it's broken....
I bet you $10 you broke it when you put your cool indiglow gauges on......
guess what, I can brake my speedo. rev my engine to 3000 in N and take a pic too.
there is only a very few number of cars that can hit 200... and your stock turbo FC sure as hell isn't one of them.
07-06-04, 12:46 PM
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[QUOTE]Originally posted by Wicked_razor
why doesnt anyone help him get this vid up, id love to see it, id also love to see you guys quit arguing, i also belive that 249 rwhp really isnt very much stock at all... why do you keep saying its a stock car, maybe stock turbo, but thats probablly about it... so give him a chance, get some ***** and help him with the vid [/QUOTE
249 aint poop! yes, that will be a quick little car, but this guy is claiming a 185mph run on, in this case, a "stock" car. no, its not literally stock, but compared to actually high-mph cars, its "practically" stock. its like saying "there are no girls in this town!" its not literal, dont quite know if it counts as a figure of speech, just a way to say it. sort of an exageration i suppose.
and yea, NZ, he mentioned earlier it was a turbo2, then later gave the year of the transmission (90).
why doesnt anyone help him get this vid up, id love to see it, id also love to see you guys quit arguing, i also belive that 249 rwhp really isnt very much stock at all... why do you keep saying its a stock car, maybe stock turbo, but thats probablly about it... so give him a chance, get some ***** and help him with the vid [/QUOTE
249 aint poop! yes, that will be a quick little car, but this guy is claiming a 185mph run on, in this case, a "stock" car. no, its not literally stock, but compared to actually high-mph cars, its "practically" stock. its like saying "there are no girls in this town!" its not literal, dont quite know if it counts as a figure of speech, just a way to say it. sort of an exageration i suppose.
and yea, NZ, he mentioned earlier it was a turbo2, then later gave the year of the transmission (90).