NOS question...

[Eli]

Originally posted by: Jeff7181
Geeze... kids and their "NOS"...

First of all... it's not "NOS"... Nitrus Oxide is N2O... NOS is a brand name, like Vice Grips...

Second... nitrus oxide is an oxidizer... it's 2 parts nitrogen, 1 part oxygen... in other words, 33% oxygen. By itself it is not flammable in any way. However, what does a fire need to burn? Oxygen. Our atmosphere is about 18% oxygen... so there's almost twice as much Oxygen in N2O as there is in the normal air. If you know anything about internal combustion engines, the more oxygen you have, the more fuel you can burn, and the more power you can make. THAT is why nitrus oxide increases power. Just adding N2O on your car won't do much except burn holes in your pistons because adding oxygen will lean out the mixture and a lean mixture burns hotter... hot enough to melt you aluminum pistons... you have to add more fuel as well to keep an optimum air/fuel ratio.

As far as the RPM go... 40,000 RPM with an internal combustion engine is impossible. It just can't happen with today's materials and the laws of physics. The rotating mass (crankshaft, connecting rods, and pistons) cannot be made light enough and strong enough to withstand the forces created by spinning it at 40,000 RPM. The forces on a connecting rod at 8,000 RPM is tremendous... which is why there are few piston engines that are capable of turning that fast.

On a side note... nitrus oxide is not the same stuff at the dentist office... automotive nitrus oxide is not approved for "human consumption" and has many impurities in it that will kill you if you inhale enough of it... so don't get any ideas you druggies

Err... You must have missed my post.

Like I said, there are plenty of Internal Combustion Engines that will turn 40,000RPM. You are correct, however, in that it would be really hard to get an automobile sized engine to turn that fast. Especially a 4-stroke, there's just no way the valves would be able to keep up.

Hell, the 4-stroke Honda GXH50 on my scooter will spin at 8000RPM all day... It's maximum governed speed is 7800RPM.. I've had it up to 8530RPM with the govenor removed.

Normal, chainsaw sized 2-stroke engines will happily turn 20,000RPM...

Definately not out of the realm of possibility.

Just for fun, here is an R/C engine that is rated at 1.95HP @ 40,000RPM.

 

[MercenaryForHire]

Originally posted by: Skoorb

Originally posted by: Jeff7181

Originally posted by: Skoorb

Originally posted by: Jeff7181

Originally posted by: Skoorb
Your friend is a crack head. Even with the 350 shot I've got in the maxima it never peaks above like 15k when I'm dragging.

Stop spewing BS... I bet your Maxima barely hits half that.

Dewd I've got an aftermarket tachometer installed on the hood (too big to fit on the dash) and it hits 15.1k at the my shift points!

Merc has seen the car at the track. It's a 10 second car all running stock internals too.

I bet you do

Well I did. It's gonna be running the 1/4 in 5.5 seconds soon and it's street legal on stock tires with stock tranny and it looks stock. It's the fastest car in the world. It pulls 5 G on the skidpad and I can do the slalom at about 145 mph.

Yeah you're fast, but you ain't got the looks!

M4H's ricebox
Another front shot
My wing pwnz j00!
peep the dope decals
rollin on 18"s mofo!

- M4H

 

[Jeff7181]

I wish there was an emoticon to roll my eyes... oh... there is...

 

[Jeff7181]

It's maximum governed speed is 78000RPM

That's pretty high, LMAO

 

[MercenaryForHire]

Originally posted by: Jeff7181
I wish there was an emoticon to roll my eyes... oh... there is...

wtf d00d didn't you like the pics?

that body kit is l33t in pic 2 eh?

- M4H

 

[desertdweller]

Originally posted by: trez2k3
Yea thats what i thought... I've heard of people blowing heads and stuff at like 9k so 40k couldn't be too good for the engine but what exactly does NOS do? Is it just a richer fuel mixture that increases HP?

The reason people blow the heads off thier engines is because they
don't have the system tuned correctly, or there has been a malfunction
somewhere in the system. The system has to be set up so as to push
more fuel into the chambers when the nitrous is there, otherwise,
the resulting instant lean condition is what causes the engine to come apart.

If your fuel system can't keep up with your nitrous system, your motor
go boom.

Lean makes for a hotter burn, and more power, but too lean will destroy
your engine.


DD

 

[StageLeft]

Actually I lied my car is all stock in looks but i'm gonna do this to the front grill. That is HELLA sweet.

Very professional job on that one too.

 

[Jeff7181]

Originally posted by: MercenaryForHire

Originally posted by: Jeff7181
I wish there was an emoticon to roll my eyes... oh... there is...

wtf d00d didn't you like the pics?

that body kit is l33t in pic 2 eh?

- M4H

dat's a phat ryde yo... but where's da pimp system... need to get some bumps up in he-ah!

 

[Jeff7181]

Originally posted by: desertdweller

Originally posted by: trez2k3
Yea thats what i thought... I've heard of people blowing heads and stuff at like 9k so 40k couldn't be too good for the engine but what exactly does NOS do? Is it just a richer fuel mixture that increases HP?

The reason people blow the heads off thier engines is because they
don't have the system tuned correctly, or there has been a malfunction
somewhere in the system. The system has to be set up so as to push
more fuel into the chambers when the nitrous is there, otherwise,
the resulting instant lean condition is what causes the engine to come apart.

If your fuel system can't keep up with your nitrous system, your motor
go boom.

Lean makes for a hotter burn, and more power, but too lean will destroy
your engine.


DD

Most of the time what causes a head to come off is either weak head bolts, improperly installed heads, or over revving the engine which causes the rod to stretch, and the piston hits the cylinder head... happens quite frequently on top fuel cars as they cross the finish line.

*EDIT* Hotter does not equal more power... the stoichiometric air/fuel ratio is 14.7:1... that's the most efficient, most complete burn... however, the most power is made closer to 12:1

 

[MercenaryForHire]

Originally posted by: Jeff7181

Originally posted by: MercenaryForHire

Originally posted by: Jeff7181
I wish there was an emoticon to roll my eyes... oh... there is...

wtf d00d didn't you like the pics?

that body kit is l33t in pic 2 eh?

- M4H

dat's a phat ryde yo... but where's da pimp system... need to get some bumps up in he-ah!

This makes all the noise I need!
More under the hood

- M4H

 

[Eli]

Originally posted by: Jeff7181

It's maximum governed speed is 78000RPM

That's pretty high, LMAO

Uh? What's your problem?

It's high for a 50cc 4-stroke small engine.

Address the rest of my post.

Yeah, that's right.. Can I get a PWNED picture, please?

 

[Jeff7181]

Originally posted by: Eli

Originally posted by: Jeff7181

It's maximum governed speed is 78000RPM

That's pretty high, LMAO

Uh? What's your problem?

It's high for a 50cc 4-stroke small engine.

Address the rest of my post.

Yeah, that's right.. Can I get a PWNED picture, please?

78,000 ?!?!?!?!?!

As for the rest of your post... put those engines in a car. A REAL car... not some piece of crap R/C car.

 

[StageLeft]

Hmm i think he meant 7800 rpm ;0

 

[Eli]

Originally posted by: Skoorb
Hmm i think he meant 7800 rpm ;0

Oh, I didn't even notice the typo.. My bad.
C'mon tho, It's obvious what I meant considering I said it will spin 8000RPM all day, and I've had 'er up to 8530. Sorry, didn't mean to jump all over you.

I thought you were going to be one of those people like Trinitron that just says the high RPM numbers are a gimmick, a'la the 9000RPM redline of the S2000.

Originally posted by: Jeff7181

Originally posted by: Eli

Originally posted by: Jeff7181

It's maximum governed speed is 78000RPM

That's pretty high, LMAO

Uh? What's your problem?

It's high for a 50cc 4-stroke small engine.

Address the rest of my post.

Yeah, that's right.. Can I get a PWNED picture, please?

78,000 ?!?!?!?!?!

As for the rest of your post... put those engines in a car. A REAL car... not some piece of crap R/C car.

It doesen't matter, I was just refuting what you said. They are indeed Internal Combustion Engines, and they do indeed turn 40,000RPM. Just because they aren't large doesen't mean it isn't real.

 

[Soybomb]

As for the rest of your post... put those engines in a car. A REAL car... not some piece of crap R/C car.

Why would he put a rc car engine in a real car?

Skoob I clicked on "I am canadian" and got a 404, Canada Not Found.

 

[StageLeft]

Originally posted by: Soybomb

As for the rest of your post... put those engines in a car. A REAL car... not some piece of crap R/C car.

Why would he put a rc car engine in a real car?

Skoob I clicked on "I am canadian" and got a 404, Canada Not Found.

Oops I'll fix thanks!

 

[Jeff7181]

See, the thing is, I'm into cars... I've built a few race engines myself, and helped build about 20 more at college... we had 2 engine dyno's there, so I know exactly what to expect from an engine... I know what's likely and what's unlikely. In general people don't understand physics, let alone, how physics applies to something like an engine. You'd be amazed how many "experienced" engine builders brought engines to the college to have them dyno'd... and estimated the HP about 10-20% on the high side. Now with this Fast and Furious crap, you got kids who know even less about this stuff than these engine builders, and they see this stuff on TV... they see what's his name supposedly throw a rod in the middle of a drag race, but keep on going and almost win... it's absolutely insane.

 

[Demon-Xanth]

GM actually made a car that redlines at 13,500 RPM.

Edit: and I mean production, not just concept.

 

[OS]

Originally posted by: bigshot
i know a guy who had NOS in his integra...got pulled over and got a $5000 fine for having it installed. I guess you have the bottle installed in the car but the hose or pipe (dont no not familar with NOS) cant be connected to the engine. He cant even get insurance right now. btw this is ontario and its a new law to condone street racing.

huh, so what's the story if you have nitrous installed but the bottle isn't open?

 

[MercenaryForHire]

Originally posted by: Skoorb

Originally posted by: Soybomb

As for the rest of your post... put those engines in a car. A REAL car... not some piece of crap R/C car.

Why would he put a rc car engine in a real car?

Skoob I clicked on "I am canadian" and got a 404, Canada Not Found.

Oops I'll fix thanks!

:beer: present and accounted for. Toss one my way, would ya?

- M4H

 

[StageLeft]

they see what's his name supposedly throw a rod in the middle of a drag race, but keep on going and almost win...

Dogg, the max comes with redundant rods. Takes like 1/4 second for the old one to get exchanged with the new if a rod is thrown.

 

[Demon-Xanth]

Ever see an RX7 throw a rod?

 

[OS]

Originally posted by: Demon-Xanth
Ever see an RX7 throw a rod?

Rotary motors don't have rods?

 

[Jeff7181]

Originally posted by: Demon-Xanth
Ever see an RX7 throw a rod?

lol

 

[Jeff7181]

Originally posted by: OS

Originally posted by: Demon-Xanth
Ever see an RX7 throw a rod?

Rotary motors don't have rods?

lol again