Nitro on a 3.0 cis

[tommy5305]

Is it safe to put nitro on my car {100 shot}?

[ZAMIRZ]

In a word, no. It has been done, but is generally frowned upon in this community. I don't think you'll find much useful information, but try doing a search on nitrous or nitrous oxide.

[blue82coupe]

If your building a 911 for the strip , go for it. If your looking for everyday usable horsepower, its useless. As you know" nitrous" can only be used at wide open throttle, which limits its use to short" Banzai "runs. In short, don't do it. The $500.00 or so it would cost to install it, is better spent on countless other upgrades or repairs on a911. Merry Christmas, Dan.

[Lukesportsman]

NITROmethane does burn cooler than gasoline, but it would require much larger injectors since it burns at like 2:1 instead of 14:1

Nitrous oxide works on just about any engine, but due to the engines qualities it is frowned on here. Some guys have been experimenting with it on their turbos though. Stay rich and make sure it doesn't predetonate. Remember these are much more expensive than a SBC.

[asphaltgambler]

Nitromethane is a very weird-acting, unstable, volatile, unpredictable 'fuel'. The only liquid medium that it will mix well with is alcohol. If mixed with any other fuel it will fall out of suspension at rest. Although it is basically liquid dynamite, it has to be under pressure to explode. The way it burns in an engine is closest in properties to diesel fuel. The more volume you add and can keep the plugs lit the more power it will make.

If you poured pure nitro on the ground and stuck a lit match to it, the flame would just be extinguished . However, if you hit the pool of nitro with a broad-faced hammer chances are it would explode!

The best fuel additive you can use is the 'Gauranteed-to-pass-Emmisions' stuff in a can that you'd buy at the local auto parts store. It has a chemical that oxygenates the burn process almost completely. It works! The process is similar to what nitrous-oxide accomplishes.

By the way, I like nitrous-oxide for street or race. The problem is most people always go with too large a HP kit. The smaller the displacement and closer to stock configuration ; the greater the actual HP increase will be. On something like the Porsche engines an adjustable kit that starts with 50 HP 'pills' would be a safe starting place. A 10lb bottle would last quite a number of full-throttle 1-5 gear changes. or the occasional blast.

[tommy5305]

To begin,MERRY X-MAS to all.Thanks for the advice on this subject.I only ask beacuse I am tired of getting beat by my friends GRAND NATIONALS,FORD LIGHTNINGS and stock MUSTANGS! I hope with the help you guys this will stop..

[beepbeep]

As mentioned above Nitromethane and NOx (often incorrectly referenced as NOS, which is just a trademark) are two different things.

NOx carries it's own oxygen, and you need more fuel. Nitromethane is a liquid and has ridiculously low stochiometric ratio.

Judging from your question, I think it going to be very unsafe for you to test any of those. Just buy a pony car and do the red light thing.

[sammyg2]

If all you are concerned with is beating mustangs and grand nationals and pick-em-ups in a straight line, you need to sell the Porsche and buy something else. That isn't what porsches are designed for or meant to be used for.
Motorized bowling is not what the good doctor Porsche had in mind.

Take some driving lessons and then invite those "other" vehicles to the local road race track, that is where the Porsche shines.

[tommy5305]

beepbeep,allready have a 94 cobra,WORKED,I am concentrating on my dream of 15 years. ONE BAD 911.

[gustav]

I assume from your motor description you also have an SC and have not swapped that 3.0 into an older long nose.

While I don't partake in stoplight racing (the fun starts at 60mph+ in the curves for me : -) I can understand the urge for more power. My plan is to dump a '95 993 motor into my SC and upgrade all of the other components at the same time. Then when I'm done with all that, likely I'll throw a TPC intercooled supecharger on it (380hp).

I also have a mustang, however just a GT (99). My feeling is, with my car being a bit lightened, the two cars are on par for accel. However my SC beats the mustang in the curves hands down. When I'm done with my swap, I suspect I could 0wn at stoplight tag, but I still won't partake. :>

[tommy5305]

GUSTAV dont partake in light to light racing, but want a fast car.here is a pic of a mustang that looks like mine

[juan ruiz]

tommy5305

ONE BAD 911

You too can have one, is simple........... Look Outside the Narrow Minded Porsche world and the road is endless, stay in the narrow minded world and you too can have One More Slow 911.

[911nut]

"Porsches aren't built for that".
You guys sound like a bunch of snooty wine and cheese types. Maybe you should sell your P cars and buy Ferraris because your starting to sound like Ferrari owners.
Tommy, you can use nitrous on any engine safely as long as you don't go crazy. Should you lose control of yourself and gernade your engine then when you rebuild the engine you can hot-rod it in a way that would impress the high-minded posters on this thread, should it matter to you.

[H20911]

I thought they were just slow due to lack of power.....Juan are you saying that they are slow because they are eating cheese and drinking wine?
wow maybe they have to put the cheese down and take a sip in between shifts.......no wonder.

If anyone gets upset I am just having some fun.

Hit it with the spray just don't get too carried away.

here is mine not hooked up.

[RANDY P]

Biggest reason I can think of is that it's tough to control AFR with CIS, which is critical if you want it to live.

The lack of a proven kit (READ: developed on someone elses dime) is a deterrent as well. Not that it can't be done but you try it first. Considering on what it costs to replace the motor if you lean out I'd shy away as well....

Drivetrain isn't really ready for drag racing as well. Before someone blurts out "Look at Juan!" keep in mind that what I mean by that is that it's not really cost effective - sure I could run 11's in mine but I'm not gonna dump 6x of what it would cost to build a Chevy.- and neither would all of you (except Juan) It just doesn't make sense. It's not a wine and cheese thing you see.

Out of the box drag racing a CIS powered 911 is like wearing tennis shoes with a suit..

Merry Christmas all..

rjp

[Mike Feinstein]

Originally posted by juan ruiz
You too can have one, is simple........... Look Outside the Narrow Minded Porsche world and the road is endless, stay in the narrow minded world and you too can have One More Slow 911.

Of course...having 5 or 6 sponsors with open wallets could certainly help one escape the Narrow Minded Porsche world. No offense Juan, but a regular working guy with a stock SC would have a hard time following in your (albeit impressive) footsteps.

If you can afford to blow up your motor, have at it (and keep us posted). But, if you need it to get to work on Monday, think twice.

[tommy5305]

I like the bashing and name calling, keep it coming! Only joking, its X-MAS. save it for tomorrow

JUAN, much props on your dedication.

[Scuba]

Originally posted by sammyg2 It takes a great deal of skill to get around a track faster than other cars in the same class with similar setups, it's also safer in that you won't kill a pedestrian at a cross walk on a race track.
It is also more responsible to realize that if you have to race, you should do it on a track and not on the street.

...and it takes a hell of a lot more honor, courage, and commitment to drive one of these 10,000 miles from home....especially today.

http://www.navy.mil/view_single.asp?id=19163

Merry Christmas.

[Frostie]

I have a fogger kit on my 1978 3.0 with Webbers IDS carbs, foggers have been installed in the intake manifold I’ve decided to run the 15hp/cyclider jets (90hp) I installed a independent male in the fuel tank to feed the nitrous fuel pump, there is a pressure switch to only allow nitrous with fuel pressure above 5PSI. RPM, chip to control nitrous between 3000-6000rpm with a rev limiter on my crane came MSD at 6500 (I may change these numbers). Crane came ignition retard apon nitrous firing and of course a limit switches to only allow nitrous at full throttle. I was going to get a bottle warmer with a pressure monitor as well. If your going to run nitrous do your home work and don’t cheap out.

I really don’t get you guys that have such a hard on for turbos but think nitrous is so evil? WTF

[sellingporsche]

This subjest seems to be a touchy one with both sides of spectrum. I will say this though....

I have always been of the impression that Porsche's (911's specifically speaking) were more of an upper-class car, something in dads garage you admired but did not touch. The car that got driven to the track (not a drag strip), and hit the canyons on the off weekends from the track.

A 911 to me represents a car that by far out-classes the use of a bottle for power.... Isnt it ironic that when you send your 911 in for a good service job you usually spend $500 to $750, yet a $500 bottle fed nightmare car blow your motor to hell and back??

If you have a hard on to juice (NOS) up a Porsche, buy a 924, 944 or a 928, there are several of them out there screaming "blow me up" and you'll find it easier on the wallet.

SammyG2, you have to remember when responding to posts like this you typically have to make an attempt to think the way the author was thinking when they wrote the post. In this case those who are "pro-NOS" most likely have spent the money in their motor to handle a shot of the funny gas, this guy seems to want to strap on a bottle and go....

Have at it, I say....blow that thing up and send us pics....I for one would love to see you nuke it...another example of what not to do when you own a 911....

P.S. Business in the front, Party in the back....The Mullet motto...lol (NOT that a sport such a diginified haircut as such)