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When someone blows their engine up with nitrous, many times its because of a really aggressive tune, or it wasn't tuned for the nitrous at all. We'll see tune files that are WAY off in both timing and AFR. Don't get me wrong, between boost and nitrous, the nitrous does produce a more violent combustion, but it's not anything that will exceed the limits of the engine with a competent tuner and his laptop. |
Pfffft.
Yes a properly installed and tuned nitrous kit will run perfectly. Then something stupid happens, like a solenoid sticks, or some wiring glitch, or an airlock in the fuel line. Or any one of a hundred things that can go wrong. Then KABLOOOEY. That's the problem with nitrous. Everything has to be perfect or else bye bye expensive engine. Not to mention the cost of running it. Tag an extra hundred bucks (or more) to your fuel costs for a Race weekend and you can pay for FI real quick. And yes, FI can grenade too. But it won't from a simple fueling issue like nitrous will. That said, there is a 1967 Shelby Pro-mod in my neck of the woods with a 705 cubic inch hemi Ford in it that runs a 1300hp shot of nitrous. Never seen it hiccup once. But it is still the most dangerous power adder you can do. Period. |
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As an engine builder, I've seen engine failures all across the board. Tighten blower belts too tight and the crankshaft snaps. Route a vacuum line incorrectly, hello 30psi and goodbye engine. I had a toasted LSA in here because one of the cats came loose, clogged the exhaust, and put so much heat in the cylinders that the moly inlay in the rings came apart. The blowby was so bad, it was gushing oil out of the rear main seal. Point is, nitrous isn't exclusively susceptible to something going wrong. |
Not it isn't, but my point is, it's more susceptible to something going wrong.
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fuel pressure saftey switch if u scared of stuff like that. if a noid get stuck . thats why u have a kill switch or manifold pressure cutoffs many many saftey items to cure those problems. if u do ur own nitrous filling after a pump u can fill it for around 3 bucks a lb. if that. plus make money cause most ppl charge 6-7 bucks. but just cause u dont know how to use nitrous dont means its bad. pretty much the same thing for f/i goes for nitrous about saftey. maybe a few lil things that are diff but . its pretty safe. if someone just does the old way they are asking for trouble.
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couple quick questions. have you ever run nitrous? have you ever blown an engine using nitrous? Part of the misconception with nitrous is due to people only remembering the horror stories about it. No one really talks about the other thousands of cars/applications/etc that are running nitrous completely fine. Granted, nitrous engine failures are normally more "spectacular" than other engine failures. But the fact remains that just like any other setup. If the due diligence has not been performed, you are waiting for trouble. that being said, I love nitrous. I've run it on just about every camaro I've owned over the years (4 of 6) and on numerous other vehicles. In over a decade of using it, I've never had a single nitrous backfire running anything from a 50hp plate system for turbo spooling up all the way to a 300hp progressive direct port setup. I've used just about every kit out there and sometimes "frankensteins" of diffferent kits (bottle and lines from one company, window/arming switch from another, etc). I've used completely brand new kits and used kits. The key to it all is the proper setup and tuning of the engine. Quote:
its not just for nitrous. it applies to all modifications and racing. The other common saying out there is that you have to pay to play. as for other ways your engine can be torn apart, see BadBubba's post. Quote:
the major cause of all nitrous failures boils down to the tune/tuner. Granted, there are plenty of components that can fail that aren't present on SC/TC, ie: solenoids, nozzles, bottle heaters, etc. But look at a SC/TC setup. pressure spikes, intercooler clogging, overboost, compressor stall, belt failure, bypass valve sticking, impeller/rotor erosion, etc. What I'm saying is that there are risks involved with all of them. Some are unique to the specific system, some are not. For those who want to go fast on a budget but don't go racing all the time, I recommend nitrous. |
Buncha butthurt N2O users.
I'll say this again. NITROUS IS THE MOST DANGEROUS POWER ADDER YOU CAN USE. Most users have never ever had a catastrophic failure with it. True. And I am glad for those who haven't. Don't wish that on anyone. No, I've never used it. Because I don't want to sweep my engine off the track. I've drag raced for over 25 years. Dozens of events every year. Seen enough to steer me well away from it. |
Not sure how you can say butt hurt users when you're knocking it without ever using it
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most backfires blow a filter apart or bust the intake . so out of 100 backfires u may see 10 that really do damage . but us said it
No, I've never used it. so how would u know anything about it. oh ya u like lookin a videos that go kaboom . u do know n/a motors can go kaboom aswell. just overheat one. or let the oil pump fail.or have one have some bad detonation u will be picking up ur engine too. thats alot more common then a nitrous backfire and that destorys a engine. i got to the track alot on weekends and ive seen 1 in the past 2 years that i can think off and it blew a quarter size hole in his intake. about a hour later he was back up and running . |
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Very da** Fast till it Vented the Block. It ran lean on the top end one to many times. when we went to put it back together, we stayed away from the Laughing gas But it was very fast |
another point proven , tune is everything lol.
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Every time someone asks about ZEX someone quickly jumps in and talk about something else.... I'm about to get the same system because I haven't heard any bad things about ZEX except from people that don't have it...... The people that have or were beat by it love it.... |
Never had any problem with the ZEX kits. Nitrous Outlet has a lot more supporters here, and rightfully so. They make great kits as well. I have used their kits on customers cars with no issues. I used ZEX on mine and love it. My biggest point is there are more than one good kits out there. See what your shop or tuner recommend and have fun beating up on the cars that are afraid to use these "junk" nitrous kits :headbang:
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I've been using a ZEX dry kit since last fall. I'm very happy with it. It's about time now to step up to the adult size shots.....:biggrin:
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300 shot ftw :biggrin:
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yeah.. dont be afraid of nitrous. Its safer than you think.
Its all in the tune and the plugs. |
I run Zex. On my 383 sbc vette I drilled out the nozzle a little and fitted a -4an line to it on the nitrous side. I then ran a 225 shot even tho the kit was only made to go to a 175 shot. Ran a 10.55 @ 133 and the car looked bone stock and had a pretty mild cam.
I now have a stock cammed L99, mods in sig. Putting a 100 shot into 12 psi and all is going well. Can't wait to get to the track with it. I'm wondering how high I can go with the shot size. |
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On a Car with a TVS2300 at 10psi. how much Fuel pressure would I have to be running at WOT to run a 100 shot or less? 40psi/50psi/etc..
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On a 100 shot with 55psi I think it calls for a 33 jet on the fuel side but if running at 40psi you would go bigger say 40 jet instead. The recommended jets are usually pretty rich so you need to test and adjust till you get it where you want it. I am running a 250 shot using 88N 33F jets and still in the low 11 a/f even though the chart recommends 88N 51F. |
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My AFR is on the fat side right now 10.7/11.2. So best would be to just start with a 50 jet and go big on the fuel and adjust from there? Not really looking to add a lot of power as much as use it to cool the IAT's some. already using meth but still getting to hot. Only using a 30m/70w mix. Do you know how to pull timing in the tune? Do I just pull 2 degrees thru the whole table? |
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I think the wet kits cool the IATs more than dry kits but I don't think I would spray a wet kit pre blower.
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