Yellow Plugs after nitrous run?

Old 07-16-2009, 10:52 AM
  #1  
NorthernPeaks
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Default Yellow Plugs after nitrous run?

I have a delema with the nitrous system on a vehicle the setup is as follows:
sbc 350 .030 over
forged manley blower pistons 8:1 comp.
race prepped rods, crank and block
bowl blended heads
TBI setup
1 annular discharge nozzle
with .065N .053F jets
run 10lbs. fuel and 9-950lbs. nitrous psi.

After a run the plugs have a yellowish tint to them, I don't see any other
signs on the plugs as being to rich, or lean cond.
the plugs do show a rich idle but thats from the cam I'm using
the computer doesn't like it at Idle.

Anybody ever run into this with having yellow tint on porcelain after a run?
and it only does it on nitrous?

Thanks,
NorthernPeaks[/img]
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Old 07-16-2009, 02:52 PM
  #2  
ARUSSELL
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Just a little on the lean side, that is where I run my N/A engines
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Old 07-16-2009, 08:22 PM
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ashbros
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What brand of plug you running?
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Old 07-17-2009, 01:53 AM
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TS1955
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The yellow tint is from sulfur dioxide. It is a chemical put in "RACE" grade NOS. That is what seperates it from the medical grade.

TS1955
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Old 09-22-2009, 08:56 AM
  #5  
corey454
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Default yellowing

master builder is correct
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Old 09-22-2009, 09:21 AM
  #6  
JEFF69Z28
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DO YOU USE LEADED FUEL?
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Old 09-23-2009, 10:36 PM
  #7  
cepx111
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Originally Posted by TS1955
The yellow tint is from sulfur dioxide. It is a chemical put in "RACE" grade NOS. That is what seperates it from the medical grade.

TS1955
I concur


Yeah, that stuff is to keep idiots from huffing it.

Didn't phase my neighbor though, came by when I was taking my bottle our for a refill, he asked is it empy? I said yeah, he grabs it takes 2 big hits and said no it's not :shock: I just shook my head.
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