Top Speed...I know it's dangerous, but....
#1
Top Speed...I know it's dangerous, but....
...I gotta know. I got on the highway yestrday in the afternoon when traffic died down and gunned it. I have a 97 se auto with a K&N cone, Apex exhaust and a RT 2.5" cat. When the car was new, it hit 130mph no problem with no Mods! But AFTER the mods, it hit 120mph and was struggling to go over that!!! What's up with that?! Could it be the mileage (currently has 65K)? Let me know what you guys think...
#5
Re: Top Speed...I know it's dangerous, but....
I take it you've recently completed the 60K maintenance and replaced the spark plugs, among other things. The only other culprit it could be is Feul filter. Often neglected, not too much appreciated.
DW
DW
Originally posted by Str8ridin
...I gotta know. I got on the highway yestrday in the afternoon when traffic died down and gunned it. I have a 97 se auto with a K&N cone, Apex exhaust and a RT 2.5" cat. When the car was new, it hit 130mph no problem with no Mods! But AFTER the mods, it hit 120mph and was struggling to go over that!!! What's up with that?! Could it be the mileage (currently has 65K)? Let me know what you guys think...
...I gotta know. I got on the highway yestrday in the afternoon when traffic died down and gunned it. I have a 97 se auto with a K&N cone, Apex exhaust and a RT 2.5" cat. When the car was new, it hit 130mph no problem with no Mods! But AFTER the mods, it hit 120mph and was struggling to go over that!!! What's up with that?! Could it be the mileage (currently has 65K)? Let me know what you guys think...
#6
Re: Re: Top Speed...I know it's dangerous, but....
Originally posted by dwapenyi
I take it you've recently completed the 60K maintenance and replaced the spark plugs, among other things. The only other culprit it could be is Feul filter. Often neglected, not too much appreciated.
DW
I take it you've recently completed the 60K maintenance and replaced the spark plugs, among other things. The only other culprit it could be is Feul filter. Often neglected, not too much appreciated.
DW
#7
Re: Re: Re: Top Speed...I know it's dangerous, but....
Originally posted by Str8ridin
Yup, the 60K service was done, hopefully all of it (it's amazing how much we trust our mechanics!). Ok, how much do you think the rims would play apart? I have 18X8's on 235/40's? I'll change out the fuel filter and see what happens....maybe wash my car to lower the drag coefficient!
Yup, the 60K service was done, hopefully all of it (it's amazing how much we trust our mechanics!). Ok, how much do you think the rims would play apart? I have 18X8's on 235/40's? I'll change out the fuel filter and see what happens....maybe wash my car to lower the drag coefficient!
Rims do make a difference. Heavier rims sap horsepower. You may not feel it during normal driving, but I'm sure it makes a difference in high speed driving. 125 or 135...it's still FAST...
#9
Re: Re: Re: Top Speed...I know it's dangerous, but....
Originally posted by rOaD bEaSt
I hit 157 mile with out NOS and I hit 162.5 with NOS ..
Wish all the best
I hit 157 mile with out NOS and I hit 162.5 with NOS ..
Wish all the best
#11
Here are some pics..
I hit 143 last Fall but the pic I took only shows 139. Of course that is what the speedo says so it may be way off..
Go here and click on the images:
http://www.munsey.net/maxima/
Go here and click on the images:
http://www.munsey.net/maxima/
#12
Heavy wheels
Originally posted by Eric L.
Rims do make a difference. Heavier rims sap horsepower. You may not feel it during normal driving, but I'm sure it makes a difference in high speed driving. 125 or 135...it's still FAST...
Rims do make a difference. Heavier rims sap horsepower. You may not feel it during normal driving, but I'm sure it makes a difference in high speed driving. 125 or 135...it's still FAST...
#13
Guest
Posts: n/a
Re: Heavy wheels
I have had my Maxima up to 143 on the autobahn. This speed was recorded on my GPS, versus the speedometer. Most speedometers tend to get inaccurate at high speeds. I think that mine was reading slightly higher, but it's hard to estimate since the speedo stops at 140 and I don't feel like looking at the speedometer driving that fast anyway!!! I don't believe I could have gotten too much more speed out of the car, although I still had several hundred RPM before redline (according to my passenger).
#14
Re: Re: Heavy wheels
Originally posted by Autobahn Max
... feel like looking at the speedometer driving that fast anyway!!! I don't believe I could have gotten too much more speed out of the car, although I still had several hundred RPM before redline (according to my passenger).
... feel like looking at the speedometer driving that fast anyway!!! I don't believe I could have gotten too much more speed out of the car, although I still had several hundred RPM before redline (according to my passenger).
#15
Re: Re: Re: Re: Re: Top Speed...I know it's dangerous, but....
Originally posted by rOaD bEaSt
I will show after few days my gauge with NOS and with out NOS ..
I will show you how I hit the gauge fast ..
I wanna tell you all really you don't know what you own ..
Do you know something that the camaro can't get me in the top speed I mean LS-1 camaro ..
Maybe you are gonna say that I'm lying and I will have to prove it again as I did
I will show after few days my gauge with NOS and with out NOS ..
I will show you how I hit the gauge fast ..
I wanna tell you all really you don't know what you own ..
Do you know something that the camaro can't get me in the top speed I mean LS-1 camaro ..
Maybe you are gonna say that I'm lying and I will have to prove it again as I did
#16
Re: Heavy wheels
Originally posted by Daniel B. Martin
I respectfully disagree. Heavy wheels will affect acceleration but not top speed.
I respectfully disagree. Heavy wheels will affect acceleration but not top speed.
#17
Re: Re: Heavy wheels
Originally posted by NZ Max
Yes, they are harder to spin up and slow down. Try this to see what I mean. Have a friend sit on an office chair with one of those gas lift things. Get him to sit with his arms folded and spin him. Simple. Now get him to hold his arms out and try to spin him. A bit harder?
Yes, they are harder to spin up and slow down. Try this to see what I mean. Have a friend sit on an office chair with one of those gas lift things. Get him to sit with his arms folded and spin him. Simple. Now get him to hold his arms out and try to spin him. A bit harder?
#18
Re: Top Speed...I know it's dangerous, but....
Originally posted by Str8ridin
...I gotta know. I got on the highway yestrday in the afternoon when traffic died down and gunned it. I have a 97 se auto with a K&N cone, Apex exhaust and a RT 2.5" cat. When the car was new, it hit 130mph no problem with no Mods! But AFTER the mods, it hit 120mph and was struggling to go over that!!! What's up with that?! Could it be the mileage (currently has 65K)? Let me know what you guys think...
...I gotta know. I got on the highway yestrday in the afternoon when traffic died down and gunned it. I have a 97 se auto with a K&N cone, Apex exhaust and a RT 2.5" cat. When the car was new, it hit 130mph no problem with no Mods! But AFTER the mods, it hit 120mph and was struggling to go over that!!! What's up with that?! Could it be the mileage (currently has 65K)? Let me know what you guys think...
#19
Maybe a good answer?
However, if the wheel/tire package's diameter is greater than stock, the speedometer might be off, but you can reach a higher top speed than that of an overall smaller wheel/tire package. The only trade off for the larger set-up is acceleration is slower.
#21
Originally posted by medicsonic
I guarantee its the cone intake thats killing the top speed. My top speed with stock airbox: 138, with cone filter : 131.
I guarantee its the cone intake thats killing the top speed. My top speed with stock airbox: 138, with cone filter : 131.
#22
Re: Re: Re: Heavy wheels
Originally posted by medicsonic
Bigger rims take smaller profile tires, hence the radius hasn't changed.
Bigger rims take smaller profile tires, hence the radius hasn't changed.
hense, when you want to drag race, you want smaller diameter rims=easier to accelerate
#24
Originally posted by medicsonic
AS Daniel B. Martin stated, the acceleration will change, the top speed shouldn't.
AS Daniel B. Martin stated, the acceleration will change, the top speed shouldn't.
#29
Hey maximaracer28
the reason his car looks different to yours is probably cause the Maximas in NZ and Australia have a slightly different appearance to those in the states. (I live in australia and have an australian maxima) It does look more like the I30 you guys have over there.
#30
Re: Re: Re: Heavy wheels
Originally posted by medicsonic
Bigger rims take smaller profile tires, hence the radius hasn't changed.
Bigger rims take smaller profile tires, hence the radius hasn't changed.
Physics Lesson in one post.
#31
Re: hey nz max
Originally posted by maximaracer28
why does your purple max look so odd? its like an i-30 mixed with a maxima, body kti and wheels and then the outcome is your car..ive heard of cefiro before but never realy knew what it stood for..
why does your purple max look so odd? its like an i-30 mixed with a maxima, body kti and wheels and then the outcome is your car..ive heard of cefiro before but never realy knew what it stood for..
Cefiro, (Japanese Maxima) = US I30 = New Zealand Maxima = Australian Maxima.
Cefiro is what the Japenese call their maximas. They also had the best motors some of them. VQ25DD or VQ30DD
yes you are probably wondering what the DD stands for. D = doch like on standard vq's. The other D stands for direct injection into the combustion chamber. A Vq25dd has 210hp stock Vs a vq25de which is 160
I don't know what the vq30dd produces but i gues 240hp? These were very few and far between.
#32
Re: Re: Re: Top Speed...I know it's dangerous, but....
Originally posted by rOaD bEaSt
I hit 157 mile with out NOS and I hit 162.5 with NOS ..
Wish all the best
I hit 157 mile with out NOS and I hit 162.5 with NOS ..
Wish all the best
#33
I don't know what the vq30dd produces but i gues 240hp?
#34
Originally posted by Nealoc187
I'm guessing 220hp, since thats what RoadBeast has stock. Im assuming he gets his extra power the same way the NZ maximas do, with the DD instead of DE.
I'm guessing 220hp, since thats what RoadBeast has stock. Im assuming he gets his extra power the same way the NZ maximas do, with the DD instead of DE.
#35
Re: Top Speed...I know it's dangerous, but....
Originally posted by rOaD bEaSt
I will show after few days my gauge with NOS and with out NOS ..
I will show you how I hit the gauge fast ..
I wanna tell you all really you don't know what you own ..
Do you know something that the camaro can't get me in the top speed I mean LS-1 camaro ..
Maybe you are gonna say that I'm lying and I will have to prove it again as I did
I will show after few days my gauge with NOS and with out NOS ..
I will show you how I hit the gauge fast ..
I wanna tell you all really you don't know what you own ..
Do you know something that the camaro can't get me in the top speed I mean LS-1 camaro ..
Maybe you are gonna say that I'm lying and I will have to prove it again as I did
How do you illustrate speeds in excess of 150mph accurately using the stock guages on a 1999 Nissan Maxima? I ask this not to discount the possibility of your claimed #'s - I just think that aside from a GPS or radar/laser reading, speeds in excess of 100 mph are difficult to measure accurately using a non-calibrated speedometer. fwiw. . .
Btw, on a deserted highway at 3AM, I was able to get my bone-stock 1995 Maxima SE 5-speed up to just over an "indicated" 140mph at one point and it was still pulling with room to redline. I ran out of straight road & had to back off - felt pretty confident I could have added another 10mph with a long enough runout. What an engine! This thing stomps! I can only imagine the latest gen. engine is a stump-puller!
Anyway, good luck in your quest for verifiable #'s! (The only ones that matter)
#37
Originally posted by medicsonic
I guarantee its the cone intake thats killing the top speed. My top speed with stock airbox: 138, with cone filter : 131.
I guarantee its the cone intake thats killing the top speed. My top speed with stock airbox: 138, with cone filter : 131.
i was going to post this.. good thing i read the post first
#38
anyway.. you guys shouldn't be driving that fast.. its against the law and you have no moral respect for other people on the road.. you should all have your license taken away and sent straight to jail.. anyone who does over 70 mph is a fvcking moron...
yes morons!!!!!!!!!!!
yes morons!!!!!!!!!!!
#39
Re: Re: Re: Re: Heavy wheels
Originally posted by NZ Max
I see what you mean but Im talking about where the weight is positioned relative to the axis of rotation. If the weight is further out, it moves more distance per revolution compared with weight thats closer to the centre. This weight therefore requires more force acting on it to move it weather it be acceleration or deceleration.
Physics Lesson in one post.
I see what you mean but Im talking about where the weight is positioned relative to the axis of rotation. If the weight is further out, it moves more distance per revolution compared with weight thats closer to the centre. This weight therefore requires more force acting on it to move it weather it be acceleration or deceleration.
Physics Lesson in one post.
#40
POP Charger decreases top speed??
What's this?? How can that be? I assume when you guys mention cone intake you're talking about the POP charger. With all the dynos we've seen you would think that the POP charger would make the top speed better. Can someone explain this?
I have a CAI and before I got my Y pipe, I would feel a lull from 120 to 140 mph. I would still get there, but not as quickly as when i was stock. I guess because when I was stock, the torque was very linear. Now, the CAI torque curve does not feel as linear. The torque is bigger than stock, but not as linear.
Now that I have the Y pipe, The rush is steady right up to 140. It seems that the lull was also affected by exhaust restriction, resulting in a somewhat flatter torque curve.
DW
I have a CAI and before I got my Y pipe, I would feel a lull from 120 to 140 mph. I would still get there, but not as quickly as when i was stock. I guess because when I was stock, the torque was very linear. Now, the CAI torque curve does not feel as linear. The torque is bigger than stock, but not as linear.
Now that I have the Y pipe, The rush is steady right up to 140. It seems that the lull was also affected by exhaust restriction, resulting in a somewhat flatter torque curve.
DW