g35 coupe gtr front bumper
#31
06-28-2013, 07:21 AM
I don’t doubt your ability to detect any improvements in your g’s performance.
However, humans are prone to bias, and that is exactly what I think we have a case of here.
Speaking strictly for drag force:
Even if the GTR bumper was able to reduce the coefficient of drag in any significant way (which, by the way, is highly unlikely), the increased frontal projection area of the GTR bumper essentially neglects this improvement in cd. And major improvements in cd are dwarfed by the frontal projection areas as values for cd are always very small. so, it is far more likely that if anything, the drag force would be greater with the GTR bumper versus the stock bumper.
Granted, this is fluid mechanics that have been greatly, greatly simplified.
Any improvements you have felt, which you clearly truly believe have been as a result of only an aftermarket bumper, are largely imagined.
However, humans are prone to bias, and that is exactly what I think we have a case of here.
Speaking strictly for drag force:
Even if the GTR bumper was able to reduce the coefficient of drag in any significant way (which, by the way, is highly unlikely), the increased frontal projection area of the GTR bumper essentially neglects this improvement in cd. And major improvements in cd are dwarfed by the frontal projection areas as values for cd are always very small. so, it is far more likely that if anything, the drag force would be greater with the GTR bumper versus the stock bumper.
Granted, this is fluid mechanics that have been greatly, greatly simplified.
Any improvements you have felt, which you clearly truly believe have been as a result of only an aftermarket bumper, are largely imagined.
So glad you went there.
All I read from you is repost from internet blogs, followed by an inexperienced opinion just as mine.
lowering a car 1 inch decreases the drag Cd by .01 That is a huge deal
snagged from a post aready on here...
2.10 - A smooth brick
0.90 - A typical bicycle plus cyclist
0.70 - A Formula 1 car
0.70 - Caterham Seven
0.60 - A typical truck
0.57 - Hummer H2, 2003
0.51 - Citron 2CV
0.42 - Lamborghini Countach, 1974
0.39 - Dodge Durango, 2004
0.38 - Volkswagen Beetle
0.38 - Mazda Miata, 1989
0.372 - Ferrari F50, 1996
0.36 - Citron DS, 1955
0.36 - Ferrari Testarossa, 1986
0.36 - Opel GT, 1969
0.36 - Citron CX, 1974
0.34 - Ford Sierra, 1982
0.34 - Ferrari F40, 1987
0.34 - Chevrolet Caprice, 1996
0.338 - Chevrolet Camaro, 1995
0.33 - Dodge Charger, 2006
0.33 - Audi A3, 2006
0.33 - Subaru Impreza WRX STi, 2004
0.32 - Toyota Celica, 2005
0.31 - Citron GSA, 1980
0.30 - Saab 92, 1947
0.30 - Audi 100, 1983
0.30 - Porsche 996, 1997
0.30 - Infiniti G37 Coupe
0.29 - Honda CRX HF 1988
0.29 - Subaru XT, 1985
0.29 - BMW 8 Series, 1989
0.29 - Porsche Boxster, 2005
0.29 - Chevrolet Corvette, 2005
0.29 - Honda Accord Hybrid, 2005
0.29 - Lotus Elite, 1958
0.28 - Toyota Camry and sister model Lexus ES, 2005
0.28 - Porsche 997, 2004
0.28 - Saab 9-3, 2003
0.27 - Rupler's Tropfenauto, 1921
0.27 - Infiniti G35 Coupe with "aero package", 2003
0.27 - Nissan GT-R 2009
0.27 - Mercedes-Benz W203 C-Class Sedan, 2001 - 2007
0.26 - Toyota Prius, 2004
0.26 - Infiniti G35 SEDAB, 2002 with "aero package"
0.25 - Honda Insight, 1999
0.212 - Tatra T77, 1938
0.195 - General Motors EV1, 1996
0.19 - Mercedes-Benz "Bionic Car" Concept, 2005
0.137 - Ford Probe V prototype, 1985
0.15 - Volkswagen ARVW
0.06 - The boxfish
0.04 - A drop of water
0.001 this dudes brain in a wind tunnel...flat!
I forget where i found the formula, but basically lowering your car 1 inch, drops the G35s Cd to 0.26. so the 4 inch drop difference of the GTR vs stock is significant. Now Im not going to go on record and say that it went to 0.22. Its all about the required HP to move the car. If you have spent a significant amount of time in your car, you will recognize that our 4th and 5th gears seem just as strong if not stronger than lower gears. The G35 claimed (back in 2004 when I got mine) that it had the same lift under the car at zero as it did doing 60mph. (something like that, hell 10 years ago)
back to the point. Most of you do run you cars at speeds over 120mph, this is fine. The G35 starts to really breath and the aerodynamics of the car (plus gearing, weight, bla bla) really start to shine.
Example GT500, super heavy, more power V8....but its a brick. I swear, in fourth gear its like they all high the breaks..its hard to move the car against the air.
The undertray of the G35 is really something to pay attention to....stock its wind testing to produce very little air under the car, maintain traction and stability at speed.
If by some way you can reduce that, decrease Cd....you can feel it.
FYI the spoiler on your car does very little under 100mph. The spoiler also decreases Cd by 0.005 to 0.01
So reread my post and think of speeds 120mph and above. My buddy has a C5 vette eith about the same HP, we run constantly agains one another. I literally left him at speed with the GTR front bumper. I increase HP and still beat him, but the pull was not as pronounced as it was with the GTR front bumper.
I also added side skirts and the CS Rear when I added the GTR front bumper. So the complet KIT vs Stock is a better comparison initially.
But overall... I have had the kit on and multiple bumpers on the car, I have real experience to back up my claims, not you "I think, it seems, I doubt bs"
I love you all, you make me do things bigger and better.
Hate - inspires creativty and innovation.
This is entertaining. I dont post things I dont believe is true. I gave my opinion, take it or leave it.
Still waiting on you attempt to do something different for the VQ community.
Like get the CF driveshaft
Push a Vortech over 550
Rock a GTR bumper and make it work
create custom vortech SC parts
widen a set of wheels
dude do something different by stop being a naa sayer. Start with that.
Such strong opinions from a COMPLETLY stock ride, 1st time car! REALLY!....SMH.
Last edited by G ZILLA; 07-02-2013 at 03:24 PM.
#32
06-28-2013, 07:24 AM
I don’t doubt your ability to detect any improvements in your g’s performance.
However, humans are prone to bias, and that is exactly what I think we have a case of here.
Speaking strictly for drag force:
Even if the GTR bumper was able to reduce the coefficient of drag in any significant way (which, by the way, is highly unlikely), the increased frontal projection area of the GTR bumper essentially neglects this improvement in cd. And major improvements in cd are dwarfed by the frontal projection areas as values for cd are always very small. so, it is far more likely that if anything, the drag force would be greater with the GTR bumper versus the stock bumper.
Granted, this is fluid mechanics that have been greatly, greatly simplified.
Any improvements you have felt, which you clearly truly believe have been as a result of only an aftermarket bumper, are largely imagined.
However, humans are prone to bias, and that is exactly what I think we have a case of here.
Speaking strictly for drag force:
Even if the GTR bumper was able to reduce the coefficient of drag in any significant way (which, by the way, is highly unlikely), the increased frontal projection area of the GTR bumper essentially neglects this improvement in cd. And major improvements in cd are dwarfed by the frontal projection areas as values for cd are always very small. so, it is far more likely that if anything, the drag force would be greater with the GTR bumper versus the stock bumper.
Granted, this is fluid mechanics that have been greatly, greatly simplified.
Any improvements you have felt, which you clearly truly believe have been as a result of only an aftermarket bumper, are largely imagined.
I cant believe I even responded to this kid!
lol
internet genius!
Funny this dude will probably meet me soon.
Hello All!
I live in Virginia Beach.
This is my first car (I learned how to drive using my parents car).
I love my G35, and don't really have all that much intention to do too much work on it at the moment. I don't have much experience working on cars, so I don't know what I will do first.
Anyways, I'm excited to join the community!
I live in Virginia Beach.
This is my first car (I learned how to drive using my parents car).
I love my G35, and don't really have all that much intention to do too much work on it at the moment. I don't have much experience working on cars, so I don't know what I will do first.
Anyways, I'm excited to join the community!
ALL: read this article
http://www.rapid-racer.com/aerodynamics.php
One thing all of you need to know about me. Is that when you read my words, think of me as laughing, i dont claim to be an internet thug, however I wont back down from a fight, if that makes sense. To each his/her own.
I owned/own the fuggly GTR bumper... nuff said.
current reference: 0.33 Cd
Last edited by G ZILLA; 06-29-2013 at 06:26 AM.
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#33
06-28-2013, 08:09 AM
#34
06-28-2013, 10:05 AM
Registered User
Ah, I see your point.
Dropping the car, adding side skirts and a rear diffuser among other things will improve your cars performance at high speeds.
I was under the impression that we were talking about the improvements made by ONLY ADDING AN AFTERMARKET BUMPER. Perhaps I was influenced by this statement:
I said:
I did not say that you did not make any improvements on your G's performance. To the contrary, from the images you have posted of your G, I have little doubt of the improvements that you have made to your G. I am just hesitant to take you at your word for all the performance improvements you have attributed solely to installing the GTR Bumper.
Dropping the car, adding side skirts and a rear diffuser among other things will improve your cars performance at high speeds.
I was under the impression that we were talking about the improvements made by ONLY ADDING AN AFTERMARKET BUMPER. Perhaps I was influenced by this statement:
I did not say that you did not make any improvements on your G's performance. To the contrary, from the images you have posted of your G, I have little doubt of the improvements that you have made to your G. I am just hesitant to take you at your word for all the performance improvements you have attributed solely to installing the GTR Bumper.
Last edited by BlackBeachG35; 06-28-2013 at 10:36 AM.
#35
06-28-2013, 10:18 AM
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#36
06-29-2013, 06:20 AM
#38
06-29-2013, 06:36 AM
Ah, I see your point.
Dropping the car, adding side skirts and a rear diffuser among other things will improve your cars performance at high speeds.
I was under the impression that we were talking about the improvements made by ONLY ADDING AN AFTERMARKET BUMPER. Perhaps I was influenced by this statement:
I said:
I did not say that you did not make any improvements on your G's performance. To the contrary, from the images you have posted of your G, I have little doubt of the improvements that you have made to your G. I am just hesitant to take you at your word for all the performance improvements you have attributed solely to installing the GTR Bumper.
Dropping the car, adding side skirts and a rear diffuser among other things will improve your cars performance at high speeds.
I was under the impression that we were talking about the improvements made by ONLY ADDING AN AFTERMARKET BUMPER. Perhaps I was influenced by this statement:
I said:
I did not say that you did not make any improvements on your G's performance. To the contrary, from the images you have posted of your G, I have little doubt of the improvements that you have made to your G. I am just hesitant to take you at your word for all the performance improvements you have attributed solely to installing the GTR Bumper.
You stood your ground and made me correct things, for that I respect. Just so many opinionated people on here that has brought zero to improving this platform.
SC vs turbo... SCs don't make power, was said for years!
Coils are a must.
Volk is the rim if choice. I went Work t1s, in Jan of 2009!!
I try to be different before looks, always have. Now I'm all about performance. About to strip, cage, the G for the track soon (next year) I'm sure I can drop 250lbs.
90-140 these car amazing. Especially when boosted.
Autocross your car and track it as much as you can, it's a great platform to drive. VIR for full track days when there $500 of play cash laying around.
#41
06-29-2013, 06:56 AM
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#42
06-29-2013, 03:14 PM
Registered User
I wasn't clear as I could of I guess, but walk down to me is more mid to top speed.
You stood your ground and made me correct things, for that I respect. Just so many opinionated people on here that has brought zero to improving this platform.
SC vs turbo... SCs don't make power, was said for years!
Coils are a must.
Volk is the rim if choice. I went Work t1s, in Jan of 2009!!
I try to be different before looks, always have. Now I'm all about performance. About to strip, cage, the G for the track soon (next year) I'm sure I can drop 250lbs.
90-140 these car amazing. Especially when boosted.
Autocross your car and track it as much as you can, it's a great platform to drive. VIR for full track days when there $500 of play cash laying around.
You stood your ground and made me correct things, for that I respect. Just so many opinionated people on here that has brought zero to improving this platform.
SC vs turbo... SCs don't make power, was said for years!
Coils are a must.
Volk is the rim if choice. I went Work t1s, in Jan of 2009!!
I try to be different before looks, always have. Now I'm all about performance. About to strip, cage, the G for the track soon (next year) I'm sure I can drop 250lbs.
90-140 these car amazing. Especially when boosted.
Autocross your car and track it as much as you can, it's a great platform to drive. VIR for full track days when there $500 of play cash laying around.
#43
06-29-2013, 03:37 PM
Registered User
/thread
Just for arguments sake, G-zilla, you are one of MAYBE 2 cars that pull off that bumper the very best in can be pulled off. i.e. It will NEVER look better than YOU made it look...if that makes sense. I don't like the GTR bumper BECAUSE it is a blatant copy of a car that the G35 is not. Personally, I prefer stock body lines...gailla lip is as far as I'm going to go with exterior mods. I'm just not into body kits in general anymore. I used to be but just grew out of it I suppose. I'm not knocking your car. But what I'm saying is, as far as aftermarket bumpers go, the GTR is DEAD LAST in my book. No hate. Just opinion.
and my car will be LS powered soon and very soon. The VQ will be my backup motor. I'm not building my car for speed or even performance. It's more of a cruiser I can drift in occasionally. But, I like N/A and I like V8s. Sooooooo
#44
06-29-2013, 03:40 PM
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#45
06-29-2013, 03:56 PM
Thats great except that turbos are better than superchargers, and regardless of whether you want form or function coilovers are the only way to go if you really are serious. but hey have fun at the track with your springs. I'm sure everyone will applaud you for being different.