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| nitrous in a slant six https://www.slantsix.org/forum/viewtopic.php?t=38180 |
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| Author: | theslantingsix [ Wed Dec 02, 2009 9:28 am ] |
| Post subject: | nitrous in a slant six |
ive searched and searched and i cant find it ive built a 225 slant six and its my hot street sleeper and im lookin to add nitrous to the old slant for some killer 1/4 mile times i was just wondering, how much it can take without looseing engine parts all over the track and what would be a good kit to use? |
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| Author: | adiffrentcity [ Wed Dec 02, 2009 10:04 am ] |
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I don't know, but the people who do will want to know the following -Cam specs -C/R and Dynamic C/R -Piston material and brand -Stock or aftermarket rods? -Ignition mods? -Forged or cast crank? Will you be using a V type "wet" nozzle or spraying dry? Maybe a perimeter plate under the carb? The thing to decide first might be what type of system to use. Every engine will have a different number, and even if you believed you could safely spray an "X" horsepower shot; you could still blow the motor. Seems to me the best way would be to get a jet kit and start small, just increasing to the point of diminishing returns on your e.t. That way you don't blow it the first time by accident or blow the tires in second and spin into a wall.... |
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| Author: | theslantingsix [ Wed Dec 02, 2009 10:21 am ] |
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its a 225 bored .030 over, 9.5 to 1 compression (what the machinest said) ,1.77 intake 1.44 exhaust valves with 3 angle valve grind,also a good port and polish, erson 270 duration .465 lift cam, stock rods, stock 73 crank, stock replacement pistons from the rebuild kit idk what brand they are nut i think the are federal mogol, holley 390 4bbl with offy intake, and clifford headers i want a kit that would bolt right on the carb flange (it looks to be the easyist to install) also i wanted ot go with what is called a wet kit but let me check that injects fuel in with the nitrous right |
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| Author: | ceej [ Wed Dec 02, 2009 11:56 am ] |
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Generally you don't want to go over a 100 shot. CJ |
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| Author: | adiffrentcity [ Wed Dec 02, 2009 5:47 pm ] |
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Yea a wet kit will add fuel and nitrous. Im gonna search summit and elsewhere to see if you can buy a wet perimeter plate type kit rated as low as a 100 shot. Honestly I'd say that would be good number to aim for, but I would still ease up to it for safety's sake. Here's a direct port 50-250hp. A square bore plate 100-150hp. Another square bore plate. You know, looking at this stuff got me thinking. Why not just buy a carb spacer and put together your own "kit"? You'd probably save big and get exactly what you need. |
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| Author: | theslantingsix [ Thu Dec 03, 2009 4:40 am ] |
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i like the second kit and its on the cheaper end of the scale (i know the can go up to the $700-$800 range) that wouldnt be to bad just keep it at bout 100 horse shot |
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| Author: | adiffrentcity [ Thu Dec 03, 2009 6:32 am ] |
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Make sure to get some kind of ignition controller with timing retard so you don't go boom. |
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| Author: | slantzilla [ Thu Dec 03, 2009 5:50 pm ] |
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One thing you really want to do when you're starting out spraying is keep it simple. Don't bother with controllers and such, start with the basics. On a stock motor that the rings have not been gapped for spray I would not really venture over 100 shot. Here's some things you really, REALLY need to keep a handle on. 1. Have a good fuel pressure gauge. Too much fuel pressure is every bit as bad as not enough. Without knowing what your fuel pressure is you have no clue what your tune-up actually is. 2. Manually take timing out before you spray. Rule of thumb is 2* for every 50 horse. That is crap. To be really safe start out at around 20* total timing, vacuum unhooked. Learn to read your plugs and add timing as it is safe. 3. 2 steps colder plug is recommended. 4. Use GOOD gas. When I spray a lot I use at least 100 octane, and have run as high as 110. 5. Keep track of bottle weights. When your bottle gets below 1/2, you will go fuel rich. Fuel rich will break pistons just as bad as fuel lean. 6. When spraying make sure to shut off the kit if you hear any weird sounds coming from the motor. Bad things happen quickly on nitrous. If the motor is shooting ducks adding more spray will not clean it out. It will break it. 7. When you cross the finish line do not jump off the throttle. Lift enough to turn the kit off and drive it on out for awhile. Snapping the throttle shut leads to fuel puddling on top of the pistons and filling the top ring land. If it ignites, and it will, you will at minimum bend the top land up. Once bent, the land will break, usually on your next pass. 8. A WOT switch on the carb is not really necessary, but it does make tuning/driving much easier and safer. I have a WOT and a toggle switch on my kit. Nitrous is a ton of fun and really addicting. Used wisely it is very safe and will not hurt your engine. Get greedy, and you will get used to replacing pistons and head gaskets. |
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| Author: | theslantingsix [ Thu Dec 03, 2009 6:11 pm ] |
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thank you mister slantzilla (and thanks to everyone else to) just one more questions for future refernce what are all the seperate controlers for nitrous and what do they do |
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| Author: | wvenable [ Thu Dec 03, 2009 6:17 pm ] |
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Bout time you weighed in on this Zilla!  That was some very practical advice. Is there a nitrous for dummies? I'm wondering what reading material could bring me (and others) a bit closer to understanding all of your recomendations? A guy's gotta start somewhere. Thanks for posting on this one.
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| Author: | adiffrentcity [ Thu Dec 03, 2009 6:35 pm ] |
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The current engine masters mag has an interview with Jeff Prock(?) of Applied Nitrous technology(?). Lots of theory not much practical stuff, especially to a slant build... I ran across a couple forums dedicated to the stuff while googling kits as well... Slantzilla, tell us about your set-up and some of the finer points of using giggle gas. |
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| Author: | madmax/6 [ Thu Dec 03, 2009 11:51 pm ] |
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I think nitrous for us dummies belongs in the dentist office.I know it doesnt belong in my car.I am not that smart,,,,,,,,YET.Guzzi Mark |
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| Author: | Joshie225 [ Fri Dec 04, 2009 12:20 am ] |
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Mark, I should have my nitrous fed Valiant out at Medford and maybe Redding next year. I'll be spotting you about 600 lbs, but I want to run heads-up just to see what happens. BTW, it's a 320 mile drive from home to Medford, 460 miles to Redding and I will drive the car there. Might even be pulling a tent trailer if one comes along at the right price. 
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| Author: | madmax/6 [ Fri Dec 04, 2009 8:31 pm ] |
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What does your car weigh?I am trying to put together a motor right now that i hope will skip over the 12s and put me in the high 11s.ALL MOTOR.High hopes and goals.Guzzi Mark |
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| Author: | Joshie225 [ Fri Dec 04, 2009 9:23 pm ] |
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Well, crap, I won't be able to compete with that on my cast piston, stock rod motor. My car is a little over 3k lbs with the big brakes and full interior. |
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