NOS Nitrous Noid stuck open! Throw it out or rebuild it?
04-24-2004, 10:40 PM
#1
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NOS Nitrous Noid stuck open! Throw it out or rebuild it? Hi guys. Went to the dyno today to tune my setup - had a little problem. For those curious, numbers are in the sig.
Problem 1: On my second run my NOS Super Pro shot nitrous noid stuck open after I shut down - did a great job or freezing my entire intake tract. Luckily no damage was done since most of it sprayed out the air filter lol.
Should I try to rebuild this noid (since it's supposedly a good one - rated to ~400 rwhp) or throw it out and go with an NX noid?
Problem 2: Right after the initial nitrous hit, I get a 50 rwtq dip which quickly disappears and the TQ curve returns to normal within 400 rpm. This happened on both runs. Could this be another Nitrous Noid problem, or maybe a NOS remote opener issue?
Problem 1: On my second run my NOS Super Pro shot nitrous noid stuck open after I shut down - did a great job or freezing my entire intake tract. Luckily no damage was done since most of it sprayed out the air filter lol.
Should I try to rebuild this noid (since it's supposedly a good one - rated to ~400 rwhp) or throw it out and go with an NX noid?
Problem 2: Right after the initial nitrous hit, I get a 50 rwtq dip which quickly disappears and the TQ curve returns to normal within 400 rpm. This happened on both runs. Could this be another Nitrous Noid problem, or maybe a NOS remote opener issue?
04-24-2004, 10:50 PM
#2
Yes, if it's an N.O.S. solenoid, they have rebuild kits. They are expensive as hell, in my opinion, for what they consist of ($39 for one, $49 other). It is real easy to rebuild, the 'noid is basically just a plunger.
Not sure about the 50 tq. drop, it could be slight tire spin. Did the dyno roller have adequate cross hatch pattern on the rollers? It could also be a glitch in the dyno. software. I haven't seen too many issues with dyno's and fueling with spray, it should be a vertical line up when the system is activated. Did the Power number drop as well? Weird...
Not sure about the 50 tq. drop, it could be slight tire spin. Did the dyno roller have adequate cross hatch pattern on the rollers? It could also be a glitch in the dyno. software. I haven't seen too many issues with dyno's and fueling with spray, it should be a vertical line up when the system is activated. Did the Power number drop as well? Weird...
04-24-2004, 10:53 PM
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Originally Posted by NOSjohn
Yes, if it's an N.O.S. solenoid, they have rebuild kits. They are expensive as hell, in my opinion, for what they consist of ($39 for one, $49 other). It is real easy to rebuild, the 'noid is basically just a plunger.
Not sure about the 50 tq. drop, it could be slight tire spin. Did the dyno roller have adequate cross hatch pattern on the rollers? It could also be a glitch in the dyno. software. I haven't seen too many issues with dyno's and fueling with spray, it should be a vertical line up when the system is activated. Did the Power number drop as well? Weird...
Not sure about the 50 tq. drop, it could be slight tire spin. Did the dyno roller have adequate cross hatch pattern on the rollers? It could also be a glitch in the dyno. software. I haven't seen too many issues with dyno's and fueling with spray, it should be a vertical line up when the system is activated. Did the Power number drop as well? Weird...
04-24-2004, 11:13 PM
#4
Yes, I would say if both power and torque dropped then it's definately the solenoid sticking. Then if one is sticking, you might as well rebuild both...just like brakes, don't just do one side.
