Question for street racers.

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rootaxs

Platinum Member
Oct 22, 2000
2,487
0
71
Originally posted by: SlowSS
Originally posted by: Skoorb
My max makes 310 at the wheels stock. Nissan 4EVA.
The stock Maxima puts down 255 HP (Approx. 217 FWHP), so what have you done to gain additional 55 HP?

Actually, it puts down less than that. There's a big case going now where it seems Nissan may have overrated the HP #'s on the Maxima while underrating the TQ at the same time.

 

SlowSS

Golden Member
Nov 28, 2002
1,573
1
0
Originally posted by: rootaxs
Originally posted by: SlowSS
Originally posted by: Skoorb
My max makes 310 at the wheels stock. Nissan 4EVA.
The stock Maxima puts down 255 HP (Approx. 217 FWHP), so what have you done to gain additional 55 HP?

Actually, it puts down less than that. There's a big case going now where it seems Nissan may have overrated the HP #'s on the Maxima while underrating the TQ at the same time.


Really? I didn't realize that there was a litigation going on for false advertisement of HP#.

So, Skoorb's claim of 310 HP is even more intriguing.

 

Mill

Lifer
Oct 10, 1999
28,558
3
81
Originally posted by: SlowSS
Originally posted by: rootaxs
Originally posted by: SlowSS
Originally posted by: Skoorb
My max makes 310 at the wheels stock. Nissan 4EVA.
The stock Maxima puts down 255 HP (Approx. 217 FWHP), so what have you done to gain additional 55 HP?

Actually, it puts down less than that. There's a big case going now where it seems Nissan may have overrated the HP #'s on the Maxima while underrating the TQ at the same time.


Really? I didn't realize that there was a litigation going on for false advertisement of HP#.

So, Skoorb's claim of 310 HP is even more intriguing.

He is kidding. NOS=! Nitrous Oxide no matter how you want to say it. NOS does not have nearly the market share that Kimberly Clark(maker of kleenex) has thus the idea that is due to NOS having a monopoly is wrong. F&F is the reason the uninformed call Nitrous Oxide NOS.
 

Nocturnal

Lifer
Jan 8, 2002
18,927
0
76
The thing is he was running a LS/VTEC combination. First thing, a LS motor comes from a regular Acura Integra LS (model). He "Frankensteined" the engine by putting a VTEC head onto the LS block. There is a lot of work needed for this type of swap, and if you don't know what the hell you're doing it'll just shut off like that. I think he didn't know EVERYTHING he needed to know about this swap. I don't think MTV actually went out and studied to see how much stuff those kids knew. They just went to a place where they "heard" about street racing going on and decided to interview them.

On the other hand, if you KNOW what you're doing, your car won't shut off like that all the time.

But then again, if you look at the drag racers, some of their cars stop working all the time as well.
 

DDDavey

Member
Oct 20, 2000
195
0
0
Glad to get some of those rumors dispelled! A "50 shot" won't "blow up"your engine, jeez!

And NOS is NOT nitrous, it's just a kit. DOn't forget a bout NX, ZEX, Edelbrock, Compucar, etc. :D

As for the comment about turbo's on the correct motor, good point. You don't want to stick a turbocharger on an engine running 13:1 compression :D That's generally a No-no! hehe

 

Sketcher

Platinum Member
Aug 15, 2001
2,237
0
0
Originally posted by: Desslok
Originally posted by: LAUST
The numbers game is what we people with REAL power refer to is "Bench Racing" Dyno's are WORTHLESS for bragging to us, Dyno's should be used for TUNING ONLY. Take my motor for instance, it's crank output is 570lbs of torque, now put that in a 3200lb car... "Smoookin'" Now put it in my 5300lb truck.. no big deal it runs a high 14 at 5800FT. The only Horse Power/Torque numbers that matter as far as someone's car are done with 1/4 mile E.T. and MPH calculations. Example My truck = 5300lbs - E.T. = 14.9 MPH = 89 - Altitude = 5800 291HP @ the Wheels @ 5800FT <---- that is a REAL LIFE off the paper number. People who talk numbers are just that.. Talkers. The ET method The formula is: hp = weight / (ET / 5.825)3 The Trap-speed method The formula is: hp = weight * (speed / 234)3

I agree with you 100 percent LAUST. DYNO can and do lie.
Not so much that "Dyno's Lie" but that Dyno #'s do not represent actual performance. Dyno readings are accurate for the purpose they are designed.

 

Evadman

Administrator Emeritus<br>Elite Member
Feb 18, 2001
30,990
5
81
Originally posted by: Yield
Originally posted by: Dead Parrot Sketch
The cold temp of NOS has some benefit, but that's not the main reason for the power increase. It's the extra oxygen combining with more fuel that makes a bigger bang, that's what makes the power.

that's also what can damage a stock engines guts.. which is what i was saying earlier.. i personally won't use nitrous.. i'd rather go the extra mile and slap a turbo on my car. as long as i'm not boosting too high, it should be perfectly reliable.

No, for the most part what hurts is running LEAN. The NOS has nothing to combine with, so it gets REAL HOT and kills things. More fuel = better with NOS. That is why kits comw ith a fuel booster of some sort. better more fuel than less.

I really want to try NOS on a diesel. Just because a diesel can not be run too lean. That sounds like fun. Hmm... New project!
 

WinkOsmosis

Banned
Sep 18, 2002
13,990
1
0
Originally posted by: Brutuskend
My car is quick (for a air cooled VW) and it starts EVERY TIME.

No N.O., no turbo, no E.F.I. But I built the whole thing with the best parts I could get, took my time and it shows.

I wish I knew what your car was.
 

Evadman

Administrator Emeritus<br>Elite Member
Feb 18, 2001
30,990
5
81
Originally posted by: Jellomancer
Originally posted by: Brutuskend
My car is quick (for a air cooled VW) and it starts EVERY TIME.

No N.O., no turbo, no E.F.I. But I built the whole thing with the best parts I could get, took my time and it shows.

I wish I knew what your car was.

Air cooled VW probably = bug or bus. Roger has a VW bus with a Corvair engine. That man has way too much time on his hands. He removed the casting flash from every fin! :Q

 

thedarkwolf

Diamond Member
Oct 13, 1999
9,030
123
106
Originally posted by: Evadman
Originally posted by: Yield
Originally posted by: Dead Parrot Sketch

I really want to try NOS on a diesel. Just because a diesel can not be run too lean. That sounds like fun. Hmm... New project!

They just did that on the show Trucks on TNN. I can't remember everything but it also had propane injection and a bunch of computer tweaks. In the before dyno run it was putting down around 250hp and in the after it put down around 450hp. It was pretty cool.
 

Evadman

Administrator Emeritus<br>Elite Member
Feb 18, 2001
30,990
5
81
They just did that on the show Trucks on TNN. I can't remember everything but it also had propane injection and a bunch of computer tweaks. In the before dyno run it was putting down around 250hp and in the after it put down around 450hp. It was pretty cool.


I haven't watched TV in a while. I will have to find that one then. Thanks! I do not know as much about diesel's as I should :(
 

LS20

Banned
Jan 22, 2002
5,858
0
0
Originally posted by: LAUST
The numbers game is what we people with REAL power refer to is "Bench Racing" Dyno's are WORTHLESS for bragging to us, Dyno's should be used for TUNING ONLY.

Take my motor for instance, it's crank output is 570lbs of torque, now put that in a 3200lb car... "Smoookin'" Now put it in my 5300lb truck.. no big deal it runs a high 14 at 5800FT.

The only Horse Power/Torque numbers that matter as far as someone's car are done with 1/4 mile E.T. and MPH calculations. Example

My truck = 5300lbs - E.T. = 14.9 MPH = 89 - Altitude = 5800 291HP @ the Wheels @ 5800FT <---- that is a REAL LIFE off the paper number. People who talk numbers are just that.. Talkers.

The ET method

The formula is: hp = weight / (ET / 5.825)3

The Trap-speed method

The formula is: hp = weight * (speed / 234)3

and, amazingly enough, those numbers do not work out at all. not even for your car. 5300*(89/234)*3 = 6000+ Horsepower on yoru truck?
 

bolido2000

Diamond Member
Dec 3, 2001
3,720
1
0
Originally posted by: rootaxs
Originally posted by: SlowSS
Originally posted by: Skoorb
My max makes 310 at the wheels stock. Nissan 4EVA.
The stock Maxima puts down 255 HP (Approx. 217 FWHP), so what have you done to gain additional 55 HP?

Actually, it puts down less than that. There's a big case going now where it seems Nissan may have overrated the HP #'s on the Maxima while underrating the TQ at the same time.

Yeah...I think the Maxima is making 205FWHP. Amazingly the BMW 330 makes 195RWHP. That's why the 330 is fast althout the peak crank HP rating is relatively low. FWD is supposed to be more efficient, but BMW proves the opposite in this case.
 

rootaxs

Platinum Member
Oct 22, 2000
2,487
0
71
Originally posted by: bolido2000

Yeah...I think the Maxima is making 205FWHP. Amazingly the BMW 330 makes 195RWHP. That's why the 330 is fast althout the peak crank HP rating is relatively low. FWD is supposed to be more efficient, but BMW proves the opposite in this case.

Two things, BMW's are known to be underrated and their gearing is exceptionally well thought of. As far as the Maxima goes, i like how the 2k2/3's and the 3rd gen Altima has underrrated TQ #'s. Looking at the dyno graph shows it doesn't have a torque curve at all... at best i'd call it a torque plateau from 2k-6.1k rpm :D

 

LAUST

Diamond Member
Sep 13, 2000
8,957
1
81
Originally posted by: LS20
Originally posted by: LAUST
The numbers game is what we people with REAL power refer to is "Bench Racing" Dyno's are WORTHLESS for bragging to us, Dyno's should be used for TUNING ONLY.

Take my motor for instance, it's crank output is 570lbs of torque, now put that in a 3200lb car... "Smoookin'" Now put it in my 5300lb truck.. no big deal it runs a high 14 at 5800FT.

The only Horse Power/Torque numbers that matter as far as someone's car are done with 1/4 mile E.T. and MPH calculations. Example

My truck = 5300lbs - E.T. = 14.9 MPH = 89 - Altitude = 5800 291HP @ the Wheels @ 5800FT <---- that is a REAL LIFE off the paper number. People who talk numbers are just that.. Talkers.

The ET method

The formula is: hp = weight / (ET / 5.825)3

The Trap-speed method

The formula is: hp = weight * (speed / 234)3

and, amazingly enough, those numbers do not work out at all. not even for your car. 5300*(89/234)*3 = 6000+ Horsepower on yoru truck?
Not 3 multiplied, 3 cubed