95ttoplt1

iTrader: (3)

Thats what I was thinking, I was just curious as to how we know all these nozzles are so close and then to see numbers assicated with atomization I was thoroughly confuzzed. I will be testing it on my car against my shark mainly out of curiousity. How would you guys suggest a "average joe" go about doing this test. My thoughts were start with a full bottle and use the heater to get the pressure about 1000lbs. I will be jetted at 150 and make a pass with the shark, switch nozzles and reheat, make a pass with the predator, switch to the shark, rehaet and make a pass. Then refill the bottle and do 2 predator and one shark pass and then compare split times, mph and such. This was just my little test, anything you guys would like to see in particular?? I was also planning on comparing my far back plugs to the front pair and seeing if there is a noticable differnce for me.

NXJeremy

Sounds like your going to be having alot of fun at the track, and be very busy. Really though, what you are going to do sounds similar to the tests done by CF except you going to be on the track instead of the dyno. There are a large number of variables that could change from run to run with or without you knowing, which would make things not very accurate. Regardless though, it would be interesting (to me anyway). I look forward to seeing your results.

95ttoplt1

iTrader: (3)

Ok should be about a month or so till I get back and get things in order, I guess I will just prove rather or not if the average nitrous idiot has any better luck with this as compared to my other nozzle.

383LQ4SS

iTrader: (33)

Yes I was just talking in theory. Because I believe there will be a point of diminishing returns as far as atomization goes.

As far as your testing at that track. I think if you just try to keep the runs as matched as possible and keep the same bottle pressure, start point and launch rpms etc...youll just have to log a BUNCH of runs to get a broad sample of each. if there is a difference a pattern should emerge eventually. If you cant distinguish a pattern...well....there is no differnce. Atleast none thats practicle. Be sure to toss out any runs that are anomolies. I would try to make atleast 10 runs of each. The larger the sample the more accurate the pattern and the easier the trend will be to spot.

Now....if one nozzle or the other say runs.... 1/2 second and 1 mph better. What does that tell you? Not a whole lot except that one probably flows a bit more juice IMO. And the same thing could have been achieved with a jet change.

I just dont see what the slight differences like that mean when your operating in a mid range setup.

One other thing. Another area that a nozzle COULD potentially prove superior over another would be when trying to extract the most HP on pump gas or limited octane fuel. Now that would be a test that would be cool to do and would have serious implications if there where major differences.
But test it out and see what happens. be sure to let us know.

mrr23

iTrader: (3)

i thought i did this exact test just last month? https://ls1tech.com/forums/showthrea...ghlight=nozzle

383LQ4SS - you even posted in it.

am i missing something with this thread?

mrr23

iTrader: (3)

http://stealthram.com/nxnytrex.htm here's the webpage i made up for the test as well.

383LQ4SS

iTrader: (33)

yes....and it was a good test IMO. And if you read my reply I basically said the same thing I said here. I think my direct quote was something like "all GOOD nozzles will be within 2-3% with similair flows".

mrr23

iTrader: (3)

ok, just making sure. i was kinda scratching my head about this thread. thinking deja vu. being within 3 rwhp to me makes it about the same. the one thing noticed was how the nx nozzle made it go leaner vs the ny-trex nozzle.

mrr23

iTrader: (3)

i wanted to expand the testing by going into MAF kits and see how that compares to single nozzles. unfortunately, me grenading the wife's motor on bradenton's track has slowed the testing down some. once her's is back up, i'll be redoing the tests on my car, then go from there.

mrr23

iTrader: (3)

to me it does, when it chages the a/f ratio as much as it did when i tested the nx and ny-trex nozzles last month

it leaned out .5 to 1 full point leaner. i can only imagine what would happen if the car was already at 13:1 ratio before i swapped to the nx nozzle.

mrr23

iTrader: (3)

you really can't say that as you read my testing where nx made more than the ny-trex at the same .062/.033 jetting.

mrr23

iTrader: (3)

at what point will the nozzle become the restriction vs jet change? in the testing i did, we saw an 18 rwhp gain going from a .081" orifice noid to a .125" orifice noid with the same .062" nitrous jet.

nx nozzle .093" openings
ny-trex .110" openings

doubt anyone would ever see the limit of the openings of either nozzle in a 200 hp and lower level. using the 80% nitrous jet to nozzle opening theory, you would need a jet size of about .137" to get that close using the .110" opening of the ny-trex nozzle.

383LQ4SS

iTrader: (33)

your gonna have to reread some of the stuff a lil closer to get the points made.

No one doubted that just changing nozzles will change power levels due to different flow characteristics or due to making the tune up (AF ratio) different.
Claims where made concerning more power with the exact same nitrous flow rate and tune up. Keep in mind that the same jet size does not mean same nitrous flow rate.

We were talking about testing in a manner that would keep the tune the same and the flow rate exactly that same to test stricly nozzle design to see if one made more power than the next.

mrr23

iTrader: (3)

did my testing indicate a flow rate change? i weighed the bottles before and after. the only thing that couldn't be accounted for is the amount used on the purge.

383LQ4SS

iTrader: (33)

its tough to say. 1/2 ounce difference when your only using ~9 ounces in a pull could amount to a gain that could be easily seen. That about 5% of your total flow during the run.

Thats why I really think to show a trend one way or another your either gonna have to really sweat the details...or do enough pulls to show a real trend.

I do think your test was the best and most accurate I have seen yet. And to me the results showed that its tough to PROVE anything substantial when the margins are so small and the variables so many and tough to measure.

mrr23

iTrader: (3)

what about a 3 gear run? simulate a 1/4 mile run?

383LQ4SS

iTrader: (33)

on another thread we were talking about the best way to test. I think the concensus was an engine dyno with a brake so you could maintain a set rpm...say 4500 rpm. Then spray for exactly 10 seconds using a very accurate timer. Maintain all parameters like bottle psi, weather,etc as close as possible. The avg the HP...or TQ for that matter over the 10 sec time period.
Then after the dynos. Flow each setup using the timer for the same 10 seconds and record flow #s. You could then either extrpolate the HP with the flow rates and compare...or rejet so flow rates are exact...and redyo.

But either way it would be a seious undertaking. Youre tests were pretty good and You were just some guy that headed to a dyno. I bet you spent some time doing that test and a little cash too. So to do a very very accurate test would be an effort. More than I could do really. It would take someone with deep pockets...like Ricky...lol.

mrr23

iTrader: (3)

ah, time yes. i have a good connection on the dyno. do some horse trading. i was there about 2 hours. the way you are wanting it done is definately a large undertaking.

i can only imagine the stress trying to keep the 4500 rpms for 10 seconds. and thanks for the compliment.

Robert56

iTrader: (2)

I remember your test, and didn't reread, however, from what I remember, the skeptics were absent when NX proved to be the superior nozzle that day.
Robert

NXJeremy

Robert, there were no skeptics in that thread because he provided all of the a/f information for the dyno pulls. In his testing the NX nozzle showed to run a little leaner which would account for the gain in a little hp. In fact, if I remember correctly (correct me if I'm wrong mrr23), the ny-trex nozzle made just as much as the nx nozzle when he switched to the larger nitrous solenoid (NX=481.xxhp and Ny-trex=480.xx).