Bolt On Turbo Or Nos Kit?

[senilykSkylines]

Hey,

I have an R33 GTS25 (1994) and I am trying to draw the best plan to get more power, even though it still has a little grunt :-). I am too attached to my car so buying a gtst is not an option. My current mods are some extractors, pod filter and a conversion to manual with an RB30 box. I have been encouraged to get a bolt on turbo but I have since been reading about NOS. The car won't be used for racing and power will not be used all the time which would suit NOS I would imagine...a bit of punch here or there would be awesome fun!

Is there anyone here who has used NOS with an N/A Skyline? If so what bits would I need to upgrade to hold a 50-75hp shot or even a 100hp? How much can it take?

They say 6psi from a turbo is approximately 60hp, would then 75-100hp of NOS be too much for the N/A?

I figured that 2mins or so of NOS at WOT is a long time so I am not worried about the limitations there. I actually wondered if it would be cheaper on fuel than a turbo because a turbo is running most of the time and NOS isn't.

There aren't many NOS cars around that I know of, so NOSing it is a little different

So is NOS a bad idea or is the turbo the way to go?

Also, I am from NZ. Does anyone know what the laws are regarding NOS in NZ? Is it legal?

NE Kiwis here?

Oh and one last thing, how dangerous is it in a crash to have a pressurised 10pound bottle of NOS sitting in your car?...boom?

cheers guys.

[lachlanw]

you watch too many movies .

1 nitrous DOES NOT BURN . it is an oxide and it only increases power by letting you burn more fuel

2 its illegal in NZ .

you should de+t it . using standard parts and a full dyno tune

[SRX720]

you should buy a gtst, it will be cheaper

running NOS (or nitrous oxide as it is correctly called) is a touchy subject, but you should watch the documentary "the fast and the furious" for more information.

[senilykSkylines]

I have been reading the hains performance manual so I am no ignorant dummy...just learning.

Thanks anyway guys. Maybe I will de+t it.

cheers.

[senilykSkylines]

"you watch too many movies .

1 nitrous DOES NOT BURN . it is an oxide and it only increases power by letting you burn more fuel "

Ya, though more power=more pressure.

[zebra]

n2o is a waste of time in anything but a drag car.

and unless you spend a few thousand on a good ECU and tuning than you will get the shits about having to run around with the ign timing retarded by 5-10 degs just so you can run the Gas once a month.

[astrotristan]

man as said above dont go nos

furthermore dont go to a workshop saying you want nos, 2 of the big ones, and that you need it by tonight.

because if you want it, it is possible, however at what price? you'll no doubt be taken for a ride!!

cheap and simple answer? go gtst

expensive and complex answer? turbo it

[PM-R33]

Read this thread as I'm not going to retype what I said

http://www.skylinesaustralia.com/forums/No...ts-t312376.html

1. If you are serious about nitrous, speak to people that have experience with it as most people on here have no clue other than what Fast and Furious showed.

2. Yes it is dangerous to have a high pressure bottle (roughly 1000psi) in your car. No nitrous doesn't "burn" but yes a nitrous bottle can explode when exposed to high heat causing the pressure inside the bottle to skyrocket in a small amount of time.

For your situation even though, even though I know you said you don't want to sell it, is to just buy a GTST.

Edited April 15, 2010 by PM-R33

[mad082]

other things to take into consideration before ruling out the GTSt option.

1: they have bigger brakes as standard

2: they have a LSD standard

3: they have a stronger gearbox

4: they have a turbo all ready there just waiting for mods to be added

5: not sure about over in NZ, but here they are starting to go for as much, if not more than their turbo versions, meaning you could sell your car and get yourself a turbo version and then spend the money you were going to spend on doing up your non turbo (and maybe a touch more) and end up with something putting out around 250kw.

only downside to going turbo is that you will use more fuel, but how much more is soley determined by your right foot. if you drive it hard it will drink fuel like anything, but if you drive it sensible it won't be too bad. the same goes for a NA, but a turbo will drink it even more, especially once you wind the boost up.

[lammy426]

Hey,

I have an R33 GTS25 (1994) and I am trying to draw the best plan to get more power, even though it still has a little grunt :-). I am too attached to my car so buying a gtst is not an option. My current mods are some extractors, pod filter and a conversion to manual with an RB30 box. I have been encouraged to get a bolt on turbo but I have since been reading about NOS. The car won't be used for racing and power will not be used all the time which would suit NOS I would imagine...a bit of punch here or there would be awesome fun!

Is there anyone here who has used NOS with an N/A Skyline? If so what bits would I need to upgrade to hold a 50-75hp shot or even a 100hp? How much can it take?

They say 6psi from a turbo is approximately 60hp, would then 75-100hp of NOS be too much for the N/A?

I figured that 2mins or so of NOS at WOT is a long time so I am not worried about the limitations there. I actually wondered if it would be cheaper on fuel than a turbo because a turbo is running most of the time and NOS isn't.

There aren't many NOS cars around that I know of, so NOSing it is a little different

So is NOS a bad idea or is the turbo the way to go?this man is from nz and has an rb25de+t in his silvia http://www.bebo.com/Profile.jsp?MemberId=6066119530

Also, I am from NZ. Does anyone know what the laws are regarding NOS in NZ? Is it legal?

NE Kiwis here?

Oh and one last thing, how dangerous is it in a crash to have a pressurised 10pound bottle of NOS sitting in your car?...boom?

cheers guys.

http://www.bebo.com/Profile.jsp?MemberId=6066119530 take a look rb25de+t Edited April 15, 2010 by lammy426

[senilykSkylines]

http://www.bebo.com/Profile.jsp?MemberId=6066119530 take a look rb25de+t

Thanks mate.

I did not realise that a lot could still be done to it. Unless I am blind, it looks like that guy is hammering out that power on the original high compression pistons...impressive.

+t is the better option for me. gtst's are still quite expencive compare to N/A's. http://www.trademe.co.nz/Browse/CategoryAt...owsing=1&14=&

I also want to work on it myself and fiddle around with it, just buying a fast car is not as much fun, better to make it fast .

Does anyone know how much hp my RB30 box would handle? I hear they are pretty strong.

A point I don't really understand is psi boost. Some say RB25DE will only take 6-7psi comfortably which equates to 50-60 hp. Does that mean the car is limited full stop to 250hp or so?

Or can mods such as a decent intercooler etc increase power and yet not damage the engine? I understand that intercoolers cool the air going into the engine therefore making the oxygen more dense...would that mean psi/pressure is increased on top of the 6-7psi?

Hope the quesiton is understood.

cheers guys.

[dori34]

buy my turbo kit lol

[N-DAWG]

I've been running 10-12 daily without probs.. but lately I've been running 7PSI due to increased travelling and ridiculously priced BP Ultimate

To answer your question, intercoolers will have to some to degree a pressure drop. I'm using a cheap intercooler, I'm getting around 2PSI pressure drop across the intercooler (according to my mechanic).

Cooler are is more dense meaning there is more air in a smaller space. Air+fuel+Spark = Power. More air = more power. With a DE+t the FMIC isn't so much about making more power, but keeping the air as cool as possible so as to reduce Intake air temperature so that excess heat in the combustion chamber is reduced preventing engine damage and melting pistons. Use a FMIC, enclose that pod filter (cold air feed will help also), and ACL Heatshield over the exhaust manifold and turbo helps a LOT with keeping heat out of otherwise too-hot-to-touch intake pipe to the throttle body.

The key to a good DE+t set up is:

A good tune to stave of engine knock and detonation - Make sure your tuner knows what he's doing to get the best of both worlds. Advancing timing will make more power and kill the engine quickly. Retarding timing will make less power, more reliably. Retarding timing too much can retain excessive heat in the combustion chamber which can also damage the engine.

Cooling - Particularly on R34 NEO's DE+t's run hotter. An oil cooler is a must on a DE NEO! After I had my stepper motor gauges hooked up I was shocked at how high the oil temps were getting! In summer doing motorway driving 110c was not uncommon! Now with the oil cooler I've dropped it 10-20c, and now with winter coming close and the "QLD" weather getting a bit cooler.. 80-90c is what I'm getting daily.

Use a good quality oil suited for your engine set up. My mechanic recommends and uses Castrol Edge Sport 10W60 in my car. I'm looking to try a different oil though on my next service as I'm going to take it to ERD and I'll see how it goes with the royal purple.

Lastly, the car isn't going to survive on stock internals if it's flogged everywhere day in day out.. but I think that's obvious

I read a good article in Zoom Magazine on N/A+t Conversions. I'll get that uploaded.

Meanwhile check out the N/A+t Power Results Thread to have an idea of what to expect

[N-DAWG]

Zoom - High Compression Turbocharing - pg 1-2

Zoom - High Compression Turbocharging - pg 3-4

Zoom - High Compression Turbocharging - pg 5

Download the file to view it in hi-res 'read-able' format

Edited April 16, 2010 by N-DAWG

[jjskyline79]

I ran a a 206 hdi on noz was good laugh surprised a few people at the lights plus it was easy to install and not really that expensive to be honest

I was running 75 shot on progressive controllers this was around 7 years ago and yes more then a few people told me i was stupid but i did it just to prove them wrong really.

[senilykSkylines]

buy my turbo kit lol

Cheers dori34.

I would be tempted, but I am all the way over in New Zealand so the postage would not be worth it.

Thanks N-Dawg for the info, I am keen to go forward with plans for a DE+T setup.

[PM-R33]

DE+T + Nitrous

[dori34]

lol didnt see u were in NZ, check up White Tiger on youtube