NX versus Ny-trex nozzle
Originally Posted by Robert56
Al good idea on testing other nozzles. However, I think mrr23 should see which nozzle maxes out first and note the hp and torque. I would let him use my car, but just to far away, so he gets to use his wifes car. 
Robert
Robert
you know me, i taint all my stuff. 
there is so many ways this could go. solenoids, nozzles, bottle valves.
which by the way, the onlt time i used the nytrex bottle was for the first run. the rest of them i stayed with my compucar bottle. and i verified that not be be a contributing factor when i redid the nozzle test for test 4 comparing both nozzles with the larger solenoid. 6 rwhp gain on test 4 swapping nozzles. 8 rwhp was the first test.
which now brings up another thought, what really is the max point of solenoids? 80% like ken suggests? or lower? it's obviously not higher.
back when i did a 150 to 200 last year on my black car, i only received less than 10 rwhp gain.
Originally Posted by mrr23
ken also explain his idea of once you hit 80% jet to orifice size of the noid, you have maxed the noid out. .063 jet and a .081 orifice netted me 77%. using the .125 noid netted me 52%. which in turn gained me 18.5 rwhp. this is what surprised me to a point. basically, you will never optimally flow the maximum orifice. what some i talked to suggested was as the nitrous is flowing through the noid, it starts closing up due to freezing. seems to be substantiated in this test.
in this case, bigger is better
in this case, bigger is better
Robert
I think your 136 in an unlocked converter is pretty close. Im sure it would be more like a 145-150 or so through a t56. Id say your doing ok setup wise. If you want more than 136 your just gooing to have to spray more at this point I would think.
well, i'm getting back to the differences in ratings. .076/.043 is what i have now for what compucar rates as a 200 motor shot. remember this whole test revolved around the whole why does nitrous companies rate the same jets differently.
.062/.033
NX (and some others)150 rwhp
Ny-trex (and some others) 150 motor
the compucar is a small solenoid as well. so, i know just going to a larger solenoid will net me another 18 rwhp. right now my restriction is the noids.
.062/.033
NX (and some others)150 rwhp
Ny-trex (and some others) 150 motor
the compucar is a small solenoid as well. so, i know just going to a larger solenoid will net me another 18 rwhp. right now my restriction is the noids.
nice results, im thinking that you only flow about 80 percent of the noid orifice too, ive been having issues getting the hp i want thru my noids so im going to be doing some testing with different noids to see if thats the problem
which brings up another question. i'm pretty sure it's been answered. and search is very limited right now.
what is a 'safe' a/f ratio on the bottle? 11:1? 12:1?, 13:1? obiviously, i'm making more power at a higher a/f ratio. but, is 6-8 rwhp worth the .5-1 point leaner condition? current in the 12.5:1 range that is.
what is a 'safe' a/f ratio on the bottle? 11:1? 12:1?, 13:1? obiviously, i'm making more power at a higher a/f ratio. but, is 6-8 rwhp worth the .5-1 point leaner condition? current in the 12.5:1 range that is.
Theres not really a specific answer. When running very large shots like 300-400 and fuel like c16 I always seem to make the most power very close to 11.5 to 1. On smaller shots like a 150 or less I am usually happy with 12.5-11.5 as long as no detonation is occuring. For any given combo and tune and fuel type there will be a best AF ratio not only for safety...but for power as well. And many times...leaner (as in 13.0-13.5) does not necessarily equate to more power. Especially when running race gas. I have seen instances where the difference between 13.5 and 11.5 was 50+ hp gain staying at 11.5 on a typical 750 rwhp setup with say a 250-300 shot.
On your setup I may be inclined to get closer to 12.0 from your current 12.5. But If I was at a very steady 12.5 and have determined there was no knock anywhere I could live with that as well. If you had knock I would address timing first at that point anyways. Your in the ballpark IMO.
On your setup I may be inclined to get closer to 12.0 from your current 12.5. But If I was at a very steady 12.5 and have determined there was no knock anywhere I could live with that as well. If you had knock I would address timing first at that point anyways. Your in the ballpark IMO.
well that gives a baseline to go by. ny-trex wants me to stay in the 11-11.5:1 range. just wanted more opinions. you going to stop by the track rental this saturday at bradenton? i'll be there testing my newly found power. trying to bust a ten. ten seconds or ten bolt.
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I think 11 is too much. If you wanted 11.5 that would be fine as well but it may cost you a bit...tough to say without checking. If it were my car I would go to 12.0 with a 150 shot. But at the track I would still be inclined to run a few gallons of 100 unleaded. Its cheap insurance and goes a LOONG way towards safety. Especially if your going to be hitting it in the lower rpms like you generally like to.
I think 11 is too much. If you wanted 11.5 that would be fine as well but it may cost you a bit...tough to say without checking. If it were my car I would go to 12.0 with a 150 shot. But at the track I would still be inclined to run a few gallons of 100 unleaded. Its cheap insurance and goes a LOONG way towards safety. Especially if your going to be hitting it in the lower rpms like you generally like to.
