PDA

View Full Version : Yellow Plugs after nitrous run?

NorthernPeaks
07-16-2009, 10:52 AM
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]
ARUSSELL
07-16-2009, 02:52 PM
Just a little on the lean side, that is where I run my N/A engines
ashbros
07-16-2009, 08:22 PM
What brand of plug you running?
TS1955
07-17-2009, 01:53 AM
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
corey454
09-22-2009, 08:56 AM
master builder is correct
JEFF69Z28
09-22-2009, 09:21 AM
DO YOU USE LEADED FUEL?
cepx111
09-23-2009, 10:36 PM
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.