Nitrous Backfire!
Thread Starter
Safety Car
Joined: Aug 1999
Posts: 4,862
Likes: 118
From: Texas
Nitrous Backfire!
:eek: Combine way too high bottle pressure(1200psi), cold outside air(38f)and 3000rpm and what do you get? A big backfire! Oh Shiet!
Fortunately, the only casualty was the plastic air box. I blew it in half. :eek: I did a roadside tape job and fired it back up. No codes, no air leaks, smooth idle, everything seems cool!
Time for a road test. By this time the bottle pressure is down where it should be(900psi) and I'm ready to see if it is going to run right. I hopped back on the road and let it rip and hit the button. Yea baby! It stills runs like a scalded dog. :cheers:
I am lucky of course but the dry ZR-1 nitrous system obviously is better than a wet system if a manifold backfire ensues. If I had fuel in the manifold it would have been ugly. As it is, the only casualty was the $34 airbox. :cheers:
Fortunately, the only casualty was the plastic air box. I blew it in half. :eek: I did a roadside tape job and fired it back up. No codes, no air leaks, smooth idle, everything seems cool!
Time for a road test. By this time the bottle pressure is down where it should be(900psi) and I'm ready to see if it is going to run right. I hopped back on the road and let it rip and hit the button. Yea baby! It stills runs like a scalded dog. :cheers:
I am lucky of course but the dry ZR-1 nitrous system obviously is better than a wet system if a manifold backfire ensues. If I had fuel in the manifold it would have been ugly. As it is, the only casualty was the $34 airbox. :cheers:
Team Owner
Joined: May 2001
Posts: 36,136
Likes: 2,511
From: ...tearing up the highways, one state at a time™®©
Re: Nitrous Backfire! (Cam Potter)
If I had fuel in the manifold it would have been ugly. As it is, the only casualty was the $34 airbox. :cheers:
BTW, what kind of noise did that explosion make?
Later,
[Modified by *89x2*, 12:40 PM 3/10/2002]
Thread Starter
Safety Car
Joined: Aug 1999
Posts: 4,862
Likes: 118
From: Texas
Re: Nitrous Backfire! (*89x2*)
YIKES!!! :eek: yeah a $34 air box instead of a $3400 intake manifold & related parts :crazy: Don't get greedy w/ the NOS :D
BTW, what kind of noise did that explosion make?
Later,
A big pop. A buddy was behind us and he said a fireball came out the exhaust. :eek:
I'm just glad I didn't have a plenum full of fuel! :)
[Modified by Cam Potter, 4:08 PM 3/10/2002]
Melting Slicks
Joined: Apr 2000
Posts: 2,793
Likes: 46
From: Elizabeth City, NC
Re: Nitrous Backfire! (Cam Potter)
Can we say LUCKY!!! I made it through one nitrous backfire about 4 years ago and all it did was explode my airbox as well. It was a wet kit. My good friend had a nitrous backfire about a week later, and it turned his normally flat hood into a cowl hood with a new shape in it that looked just like his intake used to. Destroyed the whole intake, hood and some other stuff in there. We still have the hood hanging from his garage ceiling.
Team Owner
Joined: Aug 2000
Posts: 42,935
Likes: 20
From: Sydney, Australia
CI 6-7-8-9-10 Veteran
St. Jude Donor '07-'08-'09-'10-'11-'12-'13-'14-'15-'16-‘17, '22
Re: Nitrous Backfire! (Cam Potter)
I was hoping we wouldn't see a thread like this from you. :)
Go buy a lottery ticket in case you have some good luck left. Glad it didn't damage anything else.
Go buy a lottery ticket in case you have some good luck left. Glad it didn't damage anything else.
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Thread Starter
Safety Car
Joined: Aug 1999
Posts: 4,862
Likes: 118
From: Texas
Re: Nitrous Backfire! (Ultra Slow)
Thanks, I have to work on my bottle heater thermostat. For some reason it heats the bottle up to 1200psi and that combined with low rpm caused the backfire. Once I lowered the bottle pressure it worked like a champ.
Race Director
Joined: Dec 1999
Posts: 10,230
Likes: 885
From: Alexandria, Virginia, USA VA
Re: Nitrous Backfire! (Cam Potter)
do you have a NOS bottle pressure guage in the car??? I think the big problem with nitrous is failure to get the pressure correct or failure of a fuel selenoid. either way, problems. glad your car is ok cam. keep squeezin it!!
if you don't break something every now and then, you probably aren't trying hard enough!!! thanks for posting the "good and the bad" it really helps us learn from each other. stuff happens, even when you pay close attention ALL the time.
if you don't break something every now and then, you probably aren't trying hard enough!!! thanks for posting the "good and the bad" it really helps us learn from each other. stuff happens, even when you pay close attention ALL the time.
Thread Starter
Safety Car
Joined: Aug 1999
Posts: 4,862
Likes: 118
From: Texas
Re: Nitrous Backfire! (Rkreigh)
do you have a NOS bottle pressure guage in the car??? I think the big problem with nitrous is failure to get the pressure correct or failure of a fuel selenoid. either way, problems. glad your car is ok cam. keep squeezin it!!
if you don't break something every now and then, you probably aren't trying hard enough!!! thanks for posting the "good and the bad" it really helps us learn from each other. stuff happens, even when you pay close attention ALL the time.
if you don't break something every now and then, you probably aren't trying hard enough!!! thanks for posting the "good and the bad" it really helps us learn from each other. stuff happens, even when you pay close attention ALL the time.
I posted so that people that are on the fence about nitrous realize that there will be issues. In reality, most of these problems aren't that serious. I've seen a lot of nitrous backfires that were like mine and did not hurt anything. Occasionally there are those like My Y Car's backfire that ruin your day. Those are the chances you take when you race every weekend. :cheers:
Thread Starter
Safety Car
Joined: Aug 1999
Posts: 4,862
Likes: 118
From: Texas
Re: Nitrous Backfire! (zrchris)
Why was your bottle pressure so high? Was your heater not shutting off?
The scenario was this, we were out and it was cold as hell. I let the car idle and had a window down with the heater blowing on max so I could warm up a little while we bench raced at our gathering spot. All this time my bottle heater was on too. It takes about 15 minutes to warm up the bottle and we bench raced for about 30 minutes before we headed for a local race spot. While we were heading out there we ran upon a GTS Viper and a couple of the guys were trying to bait him for a little race. He wouldn't play so as I was passing him I got the bright idea for a nitrous fly-by. I'm sure he enjoyed the light show. :eek:
Intermediate
Joined: Dec 2001
Posts: 34
Likes: 0
From: Dallas TX
Re: Nitrous Backfire! (Cam Potter)
You might want to try a purge solenoid also. They are good for controlling bottle pressure when it gets too high. I guess I should introduce myself so you'll know I'm not some ya hoo. This is the guy that works with Joel, the one with the pretty fast Rice you spoke with on the phone.
David
David
Safety Car
Joined: Dec 2000
Posts: 3,715
Likes: 16
From: Town of the cow
Re: Nitrous Backfire! (n2o4fun)
You might want to try a purge solenoid also. They are good for controlling bottle pressure when it gets too high. I guess I should introduce myself so you'll know I'm not some ya hoo. This is the guy that works with Joel, the one with the pretty fast Rice you spoke with on the phone.
David
David
Safety Car
Joined: Dec 2000
Posts: 3,715
Likes: 16
From: Town of the cow
Re: Nitrous Backfire! (SurfnSun)
So are you a bit nervous now about hitting tha juice?
:D
[Modified by 4cefed, 8:55 PM 3/11/2002]
Le Mans Master
Joined: Aug 2001
Posts: 8,309
Likes: 0
From: Jacksonville Fl
CI 5-6-7-8-9-10 Vet
Re: Nitrous Backfire! (Cam Potter)
There was a post qustion a couple of weeks back about "would you buy a car that had NOS?"
This is your (future) car. This is your (future) car on NOS. Any questions? :eek:
This is your (future) car. This is your (future) car on NOS. Any questions? :eek: