nos vs turbo

[shady]

which is less damaging to your  engine  more reliable  cheaper in the long run and more performance. and how much nos can a sohc handle ? thanks

[ca18guy]

With your question it's impossible to get a real non-bias answer/opinion.

[rotaryknight]

Both can damage your motor and both can be reliable...it is misuse and not having the understanding of how things work that give both bad reputations about reliability.

For both one of the keys in keeping you car from poping is FUEL!  Both systems rely on a specific fuel ratio that is essential for them to work without damaging your motor.  

If you are on a budget N20 can be a great power upgrade.  I wouldn't push more than a 60 shot on a KA.  I know quite a few people that run N20 consitently at the strip.  If you do run a wet system make sure that you upgrade your fuel pump.

Turbo does require more money and maintenance.  Frequent oil changes are a must.  I change mine every 1500 miles.  Oil is cheap compared to a turbo rebuild.  Also you run in to costs of boost controllers, fuel controlers, gauges, and of course a bigger fuel pump.

People tend to blow on a turbo not because of the power, though that is the second reason, but becasue that out boost what their fuel sustem can handle.

On rotaries detonation is bad so upgraded my pump with a 20b cosmo pump, kept the 2 stock 550cc primariy injectors, changed my 2 850cc secondaries to 1300cc and added an additional 2 more 550cc for saftey....now that's fuel

If you build either right and don't try to be stupid and over boost or over jet then you can have reliable sources of power.

[ca18guy]

Well said rotary, might I point out that it's NITROUS not NOS &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/crazy.gif" border="0" valign="absmiddle" alt=':crazy:'>

[rotaryknight]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (ca18guy @ May 27 2002,6:30)</td></tr><tr><td id="QUOTE">Well said rotary, might I point out that it's NITROUS not NOS <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/crazy.gif" border="0" valign="absmiddle" alt=':crazy:'></td></tr></table><span id='postcolor'>
Yup..NOS is Nitrous Oxide Systems a company just like NX Nitrous Express, or Venom.

damn FnF confused everyone that NOS was N20 or Nitrous Oxide. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'>

[DSC]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (rotaryknight @ May 26 2002,8:39)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (ca18guy @ May 27 2002,6:30)</td></tr><tr><td id="QUOTE">Well said rotary, might I point out that it's NITROUS not NOS <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/crazy.gif" border="0" valign="absmiddle" alt=':crazy:'></td></tr></table><span id='postcolor'>
Yup..NOS is Nitrous Oxide Systems a company just like NX Nitrous Express, or Venom.

damn FnF confused everyone that NOS was N20 or Nitrous Oxide. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'></td></tr></table><span id='postcolor'>
Its similar to calling inline skates, roller blades...or table tennis, ping pong.

But for my opinion, the use of n20 is cheap. Its a cheap way of getting power for a few seconds...almost cheating but not.

I'd say for drag racing, get both turbo and n20 but just one or the other, turbo.

Edit: oops I knew that jeff... <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/lookaround.gif" border="0" valign="absmiddle" alt=':look:'>

[rotaryknight]

Even for drag racing unless you are really runnin a big turbo lag isn't that much of a factor. &nbsp;You're gonna rev it up before you launch anyways.. IF you are really worried about lag buy a 2-step revlimeter and bounce it.

[Jeff240sx]

Ok. &nbsp;The molecule for nitrous oxide is n2o, not no2, or it would have to be nitrogen dioxide. &nbsp;
Anyway... nitrous is a great thing. &nbsp;And as said before, fuel is the only limit. &nbsp;I mentioned in a post 2 days ago, someone slapped either a 150 or 175 shot on, and runs 11.2 second passes at the strip. &nbsp;Stock internals, and a helluva lot of fuel. &nbsp;Tell him he's cheating... cuz AFIK, the only 240sx faster is Duy's old car. &nbsp;So duy spent buko $$$ on his setup to run, and the nitrous guy only has $2500 into his setup. &nbsp;hell... I have $2500 worth of turbo stuff in my closet, and I still need more $$$ to put it on and make it work.
The downside is, IMO, choices. &nbsp;Different systems, dry vs. wet, solenoid sizes, bottle sizes, then extras, bottle heaters, bottle warmers, gauges, nitrous purge valves. &nbsp;That and a year ago, nitrous was out of the question in FL, cuz the cheapest refills were $8/ pound. &nbsp;So $80 in ten, mabey 15 passes at the strip. &nbsp;But now you can get it for $3/pound in my little town, or $2/lb in Miami. &nbsp;Much better... only a dollar a run. &nbsp;Just about as much as race gas.
For turbos, my research so far, and personal experience, is my spending will NEVER end. &nbsp;Sure, I can hook it up for only $400 more, and run 4psi-ish. &nbsp;So a $2900 4psi turbo. &nbsp;Ouch. &nbsp;Then comes the 6-7psi boundary. &nbsp;Fuel. &nbsp;$550 for some larger 550cc injectors, and another $595 for a JWT ecu. &nbsp;And a $130 fuel pump. &nbsp;Followed by a $500 boost controller, a $300 AFC, another $400 in gauges I want, then a $1000 big ass intercooler, then a LSD, then sticky rubbers, and then the 9psi barrier, internals. &nbsp;Goodbye $1300 for pistons and rods. &nbsp;And probably some headwork, valvejob, o-ringed block. &nbsp;Next thing I know... I have a $10000 engine in a $10000 car. &nbsp;
Thats the huge problem I am up against with my setup. &nbsp;And nobody will say, "4psi is enough," when you can push a button and double that with "only some fuel."
I personally think, that for a budget, nitrous is the way to go. &nbsp;It is much safer now than ever. &nbsp;Or, if you think you can get a $1200 junkyard turbo setup and live without going crazy and mortgaging your house for add-ons, then get a turbo.
-Jeff

[blink0r]

No matter what your car is, it'll always be better running a turbo with 6psi <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt=';)'>

[rotaryknight]

Jeff- nice reply. &nbsp;I agree the amount you spend on a turbo is on going. &nbsp; hell before my FD was stolen I had ordered another single turbo(HKS T04R cutback) and had to cancel that. &nbsp;

The major downside to N20 is that you run out and it's only straight line power. &nbsp;Though if that is all you care about hell why not.

[Roly]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (rotaryknight @ May 28 2002,02:55)</td></tr><tr><td id="QUOTE">The major downside to N20 is that you run out and it's only straight line power. Though if that is all you care about hell why not.</td></tr></table><span id='postcolor'>
True and false,...

True - You'll become a nitrous junky, and will be refilling the bottle all of the time... at $35-$50 a tank, it won't seem like it's worth it after a couple of months.

False - I've seen people use nitrous in SCCA racing using a progressive system that is rpm controlled and set to spray in percentages....ie. 100shot.. 20% @ 2500rpm, 40% @ 4000rpm, etc. It's a pricey system, but it's the safest way to run nitrous because it acts more like boost instead of a light switch (on or off).

[matic 240sx]

well a guy on 240sx.org is running a 100 shot (direct port, only way to go) all day on stock internals. &nbsp;nos (arf arf, what a waste of type.. who cares what you call it...) is ok, i rather a turbo but after my sr20det is in I will put a NOS kit or Zex kit on my car. &nbsp;nos is something i would rather have as a back up.. so IF your having problems pulling on someone you got a extra 50-150 hp in a bottle.

[Jeff240sx]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (rotaryknight @ May 28 2002,04:55)</td></tr><tr><td id="QUOTE">The major downside to N20 is that you run out and it's only straight line power. Though if that is all you care about hell why not.</td></tr></table><span id='postcolor'>
I generally don't argue with people I like... but that said:
You have a turbo. &nbsp;I have a turbo. &nbsp;You are a turbo guy, as am I. &nbsp;So when we think n20 vs. turbo... the answer to give it turbo.... cuz thats the way we went. &nbsp;But honestly... any unbiased answer should include the pros and cons of both sides. &nbsp;
Just think about asking a 250hp NA owner n20 or turbo. &nbsp;He will say that both are a "straight line power" addition, and that both are detrimental in auto-x, due to too much instant power from nitrous, or turbo lag. &nbsp;A NA guy will fly out of a corner faster than a turbo or n2o guy. &nbsp;
So yeah. &nbsp;Turbo is better in the long run, but if you're poor, get nitrous. &nbsp;You will leap off the line faster than a turbo guy. &nbsp;And for street racing... 0-50 or 0-60, n2o will almost always win. &nbsp;And it's not $35-xx per fill... unless you have a 20lb bottle. &nbsp;It's like 20 for a 10# bottle.
-Jeff

[nrcooled]

This thread has single handedly made me feel better for my sr purchace. &nbsp;HP is not cheap anyway you look at it but for cost effectiveness the SR is the way to go like Matic said you get the turbo and later you can go w/ the n2o. &nbsp;In addition to all that the internals are good for like 400hp on the SR. &nbsp; <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/inlove.gif" border="0" valign="absmiddle" alt=':love:'>
Though my decision was based on other factors the sr for me made a lot more sense finacially.

BTW I also don't like n2o that much because I would get addicted to it and blow up my baby and have to put the KA back in <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/mad.gif" border="0" valign="absmiddle" alt=':angry:'>

[rotaryknight]

Jeff- I agree with you but this guy does seem to be on a budget and seems (assuming) that he is looking more for straight line performance. &nbsp;That being the basis of my desicion that N20 is a better set up for him.

I ended up choosing a SR for this 240sx I bought. &nbsp;Why? &nbsp;Because for me it was cheaper. &nbsp;With installation the whole front clip will still be under 3k and the fact that I have 260+K miles on the motor and tranny...ahah i got this car cheap.

NRCooled-Yea expect to start spending more money on that SR. You always tend to upgrade after acouple of monthes. &nbsp;Also if you are interested and plan to keep the stock turbo for a while HKS makes an actuator upgrade which allows the stock internal WG to control higher boost better.

The stock actuator is known to fluxuate and not hold for high boost or to simply fail. &nbsp;Its a cheap part from HKS.

Actuator Upgrade Kit - 1430-RN004

[nrcooled]

What work is involved in swaping the stock internal WG. &nbsp;I ask because it took me like 4hrs to just replace the base gasket right above the turbo. &nbsp;Pulling the exhaust manifold off, removing ic piping and unbolting the dp from the chassis all just to get the gasket off and let me tell you the bolts holding the tubo and the exhaust manifold together are not, I repeat, are not easy to get to. &nbsp;

I would definately like to get rid of the stock piece but since I have a baby due like 4 days ago my mod budget is pretty much nonexistant. &nbsp;But a short shifter is going to be my next investment and then a boost controller to go for that 10psi I want to run <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/biggrin.gif" border="0" valign="absmiddle" alt=':D'>
FYI I do all the work on the SR myself (takes longer but saves money and I don't trust anyone else w/ my baby <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/inlove.gif" border="0" valign="absmiddle" alt=':love:'> )

[rotaryknight]

NR- It doesn't look to bad. &nbsp;Since the actuator is on the outside of the turbo it is accesable but I am puttin mine on before the motor is dropped in. &nbsp;Like you I do as much installation as I can. &nbsp;Yes I am too lazy to actually do the swap myself.

Try workin on a FD...things are cramped too. &nbsp;It was a pain just to change plugs, I had to go from under the car to get them out.

The actuator kit will run you about $100 give or take.

[Bigdyl]

NAWWWWWWWWWWWWS <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/hehe.gif" border="0" valign="absmiddle" alt=':hehe:'>

[JEdubz]

I would say Turbo even if you're poor because of HOW SICK A BLOW OFF SCREAM IS! period. Even if Nitrous dumps were as loud as they seem like in FnF, they wouldn't sound half as sweet as a decent turbo blow off.

[Jeff240sx]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (JEdubz @ May 28 2002,8:11)</td></tr><tr><td id="QUOTE">I would say Turbo even if you're poor because of HOW SICK A BLOW OFF SCREAM IS! period. Even if Nitrous dumps were as loud as they seem like in FnF, they wouldn't sound half as sweet as a decent turbo blow off.</td></tr></table><span id='postcolor'>
Yeah... sure. Blow off valve. Sick.
When you drive an 11.2 second Corvette built to drag, you talk to me about scary, sick shit. My car was FAST... and I thought I was the top dog at the track... untill a tubbed Malibu lined up next to me. Mickey Thompson drag slicks, wheelie bars, friggin PARACHUTE even. It pushed the nitrous purge valve, and the loudest PSSSSHHHHHH!!! ever came out. Then a cloud of mist... then the lights on the tree. I left before him... and he caught traction about 60' down... and caught up to me, hit the nitrous, and left. Loudest whining sound ever... like a huge turbo spooling up without a downpipe. &nbsp;I crossed at 11.3 seconds, and his car's parachute was out and the car was almost stopped. I love the purge from nitrous. Better than anything around. I will have a spool-up kit, with a big ass purge valve.
-Jeff
BTW: He ran [email protected] mph. Blown 454 with a 400 shot dual fogger system, and a powerglide tranny.
Edit: typo...

[matic 240sx]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Bigdyl @ May 27 2002,6:08)</td></tr><tr><td id="QUOTE">NAWWWWWWWWWWWWS <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/hehe.gif" border="0" valign="absmiddle" alt=':hehe:'></td></tr></table><span id='postcolor'>
THE CASE CRACKER!!! YOU SOLVED ALL THE PROBLEMS NOW WE ALL KNOW WHAT TO GET!! YES!! THANK YOU!! LETS ALL GET NaWwWWzZZZzzZzz!!!!!!

geez... &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/eh.gif" border="0" valign="absmiddle" alt=':eh:'> gotta love dem postwhores &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/dozingoff.gif" border="0" valign="absmiddle" alt=':zzz:'>