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Old 08-27-2006, 04:05 AM   #1
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Default anybody got nos?

This is way down the road,maybe next summer, but since it is not a good idea to supercharge my presupercharged engine. It'* a wiring and logistical nightmare to swap to a series 2 or 3. Could I go for instant bolt on power with some nos and does that entail boreing out the cylinders and enlarging the exhaust ports and such? I want to get this old girl on the strip one day.
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Old 08-27-2006, 08:27 AM   #2
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Default Re: anybody got nos?

Quote:
Originally Posted by spidey3479
Could I go for instant bolt on power with some nos and does that entail boreing out the cylinders and enlarging the exhaust ports and such?
Yes and No. Yes, you can run Nitrous Oxide. No, you don't need to modify the engine to do it. NOS is liquid air and can be used on any engine within reason. It'* easy to do on FI cars due to the plenum style manifold and the ready supply of high pressure fuel from the injector rail (Just tap into the schraeder valve)

I don't think anyone makes a plate system for the 3800. A fogger type setup would be the simplest solution (unless you wanted to modify the manifold to put spray bars inside the manifold behind the TB). Holley'* p/n 05175NOS is the closest match, being a dry port system. There'* also the NOSzles, but I have zero experience with them.

If you want to play on the cheap, drop me a PM. I have a set of solenoids and filters. You would need to get the bottle, supply line (local Aerquip supplier) , spray bars (home-made from -3 fittings and brass tubing) , and standard jets.

Cautions and Warnings:

1.) don't go overboard. Anything that adds a significant HP hit to the motor can cause damage to it. Hitting the motor with a 35 to 50hp shot of nitrous prolly will not hurt it if it is timed right.

2.) get extra fuel jets if you go with a conventional wet manifold system. I did a CompuCar system and while it worked, the stock jets were very rich...car would pull for a few seconds then stumble over the excess fuel...in other words, it needed a fair amount of tuning to get the car to pull the entire quarter on the bottle.
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Old 08-27-2006, 10:40 AM   #3
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any form of Nitrous is like cheating im my book.....id rather have the power all the time, NOT on the flick of a switch
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Old 08-27-2006, 11:11 AM   #4
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Quote:
Originally Posted by 1993 SLE
any form of Nitrous is like cheating im my book.....id rather have the power all the time, NOT on the flick of a switch
Suit yourself, I personally don't consider it cheating because it can be just as hard to use effectively as any other HP adder. Nitrous Oxide is a compromise solution. Initial expense is less than a higher displacement N/A motor or a forced induction engine. Long term expense is higher if you use it a lot (Spidey: A 10lb bottle of nitrous lasts about 10 passes on a 5.7L motor doing a 90hp shot...on a 3800 I'd guesstimate 15 passes before the bottle pressure drops off. Everything revolves around how big the jets are.)

For a weekend drag racer on a budget, it'* a viable system. I don't hold with trying to sneak the system in past the tech inspecters. If you are gonna run a bottle, be straight up about it.
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Old 08-27-2006, 11:20 AM   #5
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I personally feel the same about Nitrous. It'* the worst and most dangerous form of power adder you can choose, and any ricer can do it to any car. It'* become a foul 'ricer thing' over time.

Doing a swap to a S2 can be done for under $1000 if you choose your parts carefully, and that'* a setup that will last.

Before doing ANY type of work to your engine, you should carefully consider your very old and tired transmission that wasn't rated for that much power.

Swap or Turbo. Forget the juice.
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Old 08-27-2006, 11:45 AM   #6
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I guess I'll be the third dissenting opinion of NOS.

Real power,not bottled, is where it'* at in my book
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Old 08-27-2006, 12:32 PM   #7
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Welp, I guess I'm one of those "foul ricers" then....strange, I never considered myself one. I guess I gotta run out and put a huge wing on the '87 Camaro along with a big red "R" badge to announce my newly found ricer status to the world. You fellows are confusing stereotype with substance.

The "ricers" are running NOS due to a very limited set of options. You can't shovel big displacement motors in very small packages. Liquid displacement is about all that is available. Just because you have an attitude issue with them is no reason to paint the whole topic in black. About the only thing "foul" is the sulphur smell of nitrous itself (unless you can get medical grade.) It has been successfully used on aircraft and auto engines for half a century, no reason to stop now over a style issue. The advantage sides are pretty strong. You don't have to buy high octane gas on a regular basis, the systems are far cheaper than any engine swap, and the ability to increase power output of any motor is pretty flexable (way beyond the limits of forced induction.)

You can screw up a motor with NOS, a blower, turbocharger(*), nitro, even just plain old neglect if you are dumb enough. It'* all in how you use the grey matter between your ears.
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Old 08-27-2006, 12:35 PM   #8
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Nitrous is actually quite safe when tuned properly.
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Old 08-27-2006, 03:29 PM   #9
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Quote:
Originally Posted by clm2112
Welp, I guess I'm one of those "foul ricers" then....strange, I never considered myself one. I guess I gotta run out and put a huge wing on the '87 Camaro along with a big red "R" badge to announce my newly found ricer status to the world. You fellows are confusing stereotype with substance.

The "ricers" are running NOS due to a very limited set of options. You can't shovel big displacement motors in very small packages. Liquid displacement is about all that is available. Just because you have an attitude issue with them is no reason to paint the whole topic in black. About the only thing "foul" is the sulphur smell of nitrous itself (unless you can get medical grade.) It has been successfully used on aircraft and auto engines for half a century, no reason to stop now over a style issue. The advantage sides are pretty strong. You don't have to buy high octane gas on a regular basis, the systems are far cheaper than any engine swap, and the ability to increase power output of any motor is pretty flexable (way beyond the limits of forced induction.)

You can screw up a motor with NOS, a blower, turbocharger(*), nitro, even just plain old neglect if you are dumb enough. It'* all in how you use the grey matter between your ears.
Amen to that!

I won't be using the stuff anytime soon, but power is power regardless of how you make it. Heck, I can complain that the only reason the L67 cars are fast is forced induction, and that it'* cheating unless you run naturally aspirated. You could even draw a parallel between pump gas and race gas; unless you run race gas all the time, you're cheating because you're using a fuel that allows you to add timing and make more power. Nitrous has the same effect; it just doesn't go in your gas tank, and it'* dispensed in a different form.

MOST IMPORTANTLY... Spidey didn't start this thread to ask if you guys thought nitrous was ethical or frowned-upon. He just wanted to know if it could be done, and how tough it would be to do it. Let'* not forget that our opinions aren't always required, or even asked for.
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Old 08-27-2006, 03:49 PM   #10
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Quote:
Originally Posted by Sol
Nitrous is actually quite safe when tuned properly.
Exactly. Personally, I don't like nitrous. The idea of being able to run out of the power just isn't appealing to me, and it is pretty easy to screw things up pretty quick with it. On a drag car its a little different story though. However, making power is making power no matter how you look at it. However, I do think if you have nitrous you should fess up and tell people. I'd rather make my power with boost, cam(*), exhaust, etc..., but nitrous is also a very effective way of doing it. Especially when you have already done a lot of stuff to increase power with your setup but still want to go faster. I have been considering throwing a little shot on my Trans Am once I put the engine back together. A cammed 305 with heads, headers, 4.56 gears, and a 75 shot should run pretty damn well.

FWIW, there is a guy running 12.3'* in his L67 GP around here, and we are going to be putting some spray to it sometime next week. 12.3'* are nice, but with some spray the car should easily duck into the 11'*, and with tuning and a few other things I think the car could see 11.5'* pretty easily. Its also a non-intercooled L67 with stock heads and exhaust manifolds (no headers). (its actually got the same exact mods as my GT, but with an L67 block, PEM'*, and a 3" downpipe, but with stock gears still and a 3.0" pulley) 11'* with that setup would be very impressive IMO. Right now the car hangs with cammed LS1'* with heads, headers, gears, etc... With spray it should be walking on them with no issues.
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