Any S197 Nitrous horror stories?

[DKO]

Anybody here blown a motor or had any kind of adverse effect from nitrous yet? I'm wanting to spray mine but I'm having trouble pulling the trigger as I don't want to risk blowing it. I can deal with puddling and the occasional blown up intake, but who here has had problems? Any recommendations on how to avoid/correct them before they happen?

 

[06tyrfryr]

biggest problem I had was getting the auto trans to shift before hitting rev limiter and starving for fuel when I started dropping down in the 1.4s 60'. drilling out the valve body fixed the trans problem and making sure I had over half a tank of fuel fixed the fuel problem. the other problem was after a while of running the nitrous management started making it go into forced idle because of a tps fault. I finally found a way to cure that by taking the circuit board out of the solenoid pack and activating it old school off the throttle rather than the tps sensor and it is working flawlessly now. I have also been spraying 150 shot for a year and a half with stock fuel pump and no engine problems

 

[psfracer]

biggest problem I had was getting the auto trans to shift before hitting rev limiter and starving for fuel when I started dropping down in the 1.4s 60'. drilling out the valve body fixed the trans problem and making sure I had over half a tank of fuel fixed the fuel problem. the other problem was after a while of running the nitrous management started making it go into forced idle because of a tps fault. I finally found a way to cure that by taking the circuit board out of the solenoid pack and activating it old school off the throttle rather than the tps sensor and it is working flawlessly now. I have also been spraying 150 shot for a year and a half with stock fuel pump and no engine problems

A couple years ago I was also on the 125shot, then the 150shot. I also had a problem with the TPS going into forced idle, so I also removed the wire off of the tps and activated it the old fashion way.

I loved to squeeze right out of the hole, and eventually paid the price with a nitrous backfire. Blew the intake off, the hood became a banana, and the compression from the explosion broke the windshield. On the engine teardown, the crank, rods, bearings, and 7 of 8 pistons looked great. With N20, I think the motors weakness is the very thin top ring land. The top ring is very close to the top of the piston, and a portion of it was actually missing on one piston. Understand, it didn't melt or whatever, it was clear a piece actually broke off. Oh well, that made me switch to the whipple...

But after what I would estimate about 170+ passes on the N20 (from the 100-then125-then150) the engine during teardown showed little signs of abnormal wear.

 

[psfracer]

Anybody here blown a motor or had any kind of adverse effect from nitrous yet? I'm wanting to spray mine but I'm having trouble pulling the trigger as I don't want to risk blowing it. I can deal with puddling and the occasional blown up intake, but who here has had problems? Any recommendations on how to avoid/correct them before they happen?

Haha, thats funny.

Always run the best gas you can, a colder plug, and the right timing. Detonation is your biggest enemy based on the pistons--see above.

 

[anticubicle]

Thanks to lots of silly stories and weak movies like Fast & The Furious — nitrous has a bad rap. If you're responsible when spraying you will be fine. The normal safety features generally come with most kits but you can always add a window switch (I opted not to). Just make sure you've got a good tune (or have the right amount of timing taken out) and as psfracer stated, colder plugs.

You wont need race gas for a smaller shot but it doesn't hurt to put some in! What I'm doing is having two tunes made — one for a 150 shot on pump gas and then another tune for a 150 shot on race gas.

Also note that when you're going with a larger shot, upgrading your fuel system is a must! I suggest you avoid any sort of booster pump and go directly for the GT-500 fuel system.

http://www.lethalperformance.com/pa...-9407-gt05-ford-racing-gt500-fuel-system.html

And again, as psf stated the plugs. I suggest Autolite HT0's.

http://www.lethalperformance.com/pa...t0-autolite-revolution-ht0-spark-plugs-8.html

 

[94tbird]

I watched Mikem run a 175 shot on his stock motor. Every 3-4 shift would blow the C&L intake from the TB because the nitrous would pool when he shifted as the TB would close for a second then open. Was pretty cool and he ran a 11.2 on that run

 

[anticubicle]

I know of a local guy that was running a 200 shot, surprisingly he was running on the stock motor and it lasted a few months.

 

[dustindu4]

I watched Mikem run a 175 shot on his stock motor. Every 3-4 shift would blow the C&L intake from the TB because the nitrous would pool when he shifted as the TB would close for a second then open. Was pretty cool and he ran a 11.2 on that run

Yeah I remember that. that wouldn't have happened it if he had a window switch. Zex makes a nice unit now

 

[don_w]

What ever happened to mikem? Haven't seen him around in a while.

 

[psfracer]

He sold the car, didn't he?

 

[dustindu4]

yeah he sold his car that he had $40k into for about 20 grand. Thing had like 4k miles on it and still smelled new inside. Still can't figure out why he sold it. I guess after doing 11.2 in it he didn't want to put a cage in it and it wasn't fun anymore. It was such a garage queen that he never drove it or enjoyed it, then got annoyed with a $600 car payment. For that price I would have bought it and sold mine but I'd be worried about the damage he did running the 175 shot on the stock motor. The axle tubes were bent from running that too.

The guy that bought it a year ago still hasn't driven it since the day he bought it from mike, just sits in a barn.

Mike just bought a new house down the street, way bigger than his old one, 3 car garage, everything. I guess his business is doing good. He was ready to get a Shelby but he hasn't sold his old house yet. So I don't think his wife will let him get a new car soon.

We still talk all the time. He was at my wedding a month ago (cat's out of the bag now). We go shooting and play PS3 online often.