Just had a bad nitrous backfire - what do you think got hurt?

[sgarlic]

Damn weak plastic intakes!

 

[the98stang]

well at least you have good compression.

 

[LaserRed01GT]

Damn weak plastic intakes!

I guess I would rather have the plastic intake be the weak point rather than a piston or ring land.

Ordered new parts today from Randy.

 

[Logan2003Cobra]

Why, oh why... did you re-start the engine? All of the nitrous kit instructions tell you, in one form or another, to remove spark from the engine and crank it over if you suspect anything leaking in to your intake. I'm not saying nitrous backfires won't ever happen, but in your case, you were... playing with fire. lol

 

[mustangkid05]

Horror stories like this are the reason i'm never putting nitrous in my car...Good luck man, from the sounds of it this could be spendy, at best a few hundred wendy's frosties.

haha i like that commercial,...........yea deff get that looked at by a mechanic if udk what ur doing

 

[JayC]

How old are the solenoids and when were they last inspected by NX? Nitrous Express will dissamble and test your solenoids FREE of charge I send mine in every winter as a safe-guard Maintenance is important with a nitrous system .....no different than anything else

 

[LaserRed01GT]

Why, oh why... did you re-start the engine? All of the nitrous kit instructions tell you, in one form or another, to remove spark from the engine and crank it over if you suspect anything leaking in to your intake. I'm not saying nitrous backfires won't ever happen, but in your case, you were... playing with fire. lol

Unfortunately I am not clairvoyant. The car suddenly died as if it were an ignition problem. I had also just replaced all the COP's and plugs. I did not supect any nitrous leaks into the intake manifold at the time. We checked everything several times. The purge, fuel, and n20 solenoids all were working properly with the key on/engine off. The microswitch was properly energizing/de-energizing the n20 and fuel solenoid like it should. When the car died, there were no signs or sounds of n20 or fuel getting past the solenoids.

I re-started the car based upon the above followed logic. This is just one of the unfortunate associated risks with artificial HP in a bottle.

 

[LaserRed01GT]

How old are the solenoids and when were they last inspected by NX? Nitrous Express will dissamble and test your solenoids FREE of charge I send mine in every winter as a safe-guard Maintenance is important with a nitrous system .....no different than anything else

Less than 8 months old.

 

[sgarlic]

I guess I would rather have the plastic intake be the weak point rather than a piston or ring land.

Ordered new parts today from Randy.

I hear ya. I'm sure you realize I was just attempting to (and failing) be humerous.... a metal intake probably would've done the same thing with nitrous pooled up in it.

 

[blackink00]

you have a WOT switch right cause this doesnt happen to often. ive never had one problem with mine in 4 years. sounds really weird.

 

[LaserRed01GT]

you have a WOT switch right cause this doesnt happen to often. ive never had one problem with mine in 4 years. sounds really weird.

Yes, there is a WOT microswitch engaged by the throttle blade. Unfortunately this happens more often than people think. Sometimes nitrous works..........sometimes it doesn't.

How big a shot are you spraying?

 

[98armygt]

i havent had any problems with my 98 gt on the 125 dry shot. ive beaten that car to death at beech bend raceway a few times and at some other local tracks. im pushing 373 rwhp on the spray and 268 n/a.

 

[d98gt]

268 on a 98 gt? Entire PI Swap done?

 

[98armygt]

yea complete PI swap and some other stuff along with it. i still have yet to get the car tuned so its 268 rwhp untuned.

 

[LaserRed01GT]

Well after all of the searching and asking around, I have not yet heard of one nitrous backfire that has caused any damage to the bottom end. That makes me feel better, but it was blowing a little smoke out of the tailpipes before I shut it off.

We'll start tearing it apart on Monday.

Anybody ever heard of any internal or bottom end damage from a nitrous backfire.....specifically just when starting the motor?

 

[98armygt]

i never heard of anything like that. just blown intakes. thats about it.

 

[blackink00]

im running a 100 shot but honestly i hear more about blowers ruining engines then n2o

 

[Pennywise2]

Of course your POS plastic intake manifold should be
blown to peices.You should strip your engine down
and see what was damaged that's what I would do.
Having ran Nitrous Express on my old 92 GT for numerous
years I will tell you a WOT switch is your friend.
Nitrous is also as safe as YOU make it.
The last person I know how got a nitrous backfire
ended up with two rods going right through their
pistons and block.

 

[LaserRed01GT]

She's all back together and running fine. The intake manifold took the entire hit. Luckily the MAF and everything else survived.

Here's a few pics just for kicks:

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[Kilgore Trout]

You got lucky... This time...