How much nitrous have you sprayed on a stock bottom end !

[v8killer]

hey guys im building a 2g fwd car with a ported 14b looking for 11.90's on turbo then 10.9o's on spray. i have a dynotune nitrous kit with 100 hp jets. i hear of people using 75 shots no problem just wondering how much i can spray with a good tune. i will have all the supporting mods and the ability to control timing !

 

[jrohner]

Your profile says 450 injectors, so no you don't have supporting mods for the times you are shooting for.

 

[Iroc_g]

That seems like some pretty ambitious goals for a 14b setup.

 

[v8killer]

it will do it on 450's they will be pushed but i think it will do it, the car will be tuned on turbo only be fore spray is even thought of ! the car is pretyy light also but my question was mainly about how much nitrous ?

 

[Epic904]

I thought the nitrous itself is its own fuel supply, if it is a wet shot. I would think that the boost pressure is were you might run into a problem of out running the 450's. The 100 shot and stock boost should be fine on the injectors, any more i would say you would want to upgrarde the injectors. Can you control the timing with the tuning software you have?

 

[turboglenn]

My concern would be that you will be pushing that 14b to the max already to get 11.90's out of it (unless you're curt brown) and then when you add N20 on top of it...whooo boy... you're going to spin the guts right out of that turbo. Good luck!

 

[Jeff@Slowboy]

First, you will need larger injectors. N2O requires more fuel because it is adding more oxygen to the mixture. Second, What rods/pistons are you using? With nitrous the ring lands and rods take a lot of punishment due to the higher cylinder pressures. I personally wouldn't run more than a 50 shot on a stock bottom end.

Oliver
[email protected]

 

[v8killer]

i have a wet kit it supplies its own fuel. i have a set of 880cc injectors that i can use but i think the 450's will do just fine even if i have to turn the boost down on the nitrous.

 

[turboglenn]

USe the 880's.. Yes the wet kit supplies it's own fuel so the fuel injectors shold have nothing to do with that.. BUT you better have a good pump that can feed the wet kit and still provide enough fuel for the injectors to do their job correctly.

I think you have some more planning, buying, and tuning to do before you even think about hitting the "go go juice" or you're going to have ONE fun ride then be wishing you'd had listened to what we're trying to tell you.

 

[Jeff@Slowboy]

i have a wet kit it supplies its own fuel. i have a set of 880cc injectors that i can use but i think the 450's will do just fine even if i have to turn the boost down on the nitrous.

What are you using to tune with?

Oliver
[email protected]

 

[v8killer]

i respect all you guys opinions, but do you have first hand knowlege with nitrous on you turbo car ? well as of right now i have a stock rebuilt 7 bolt with a 255 intank fuel pump. i will be spraying nitrous everybody else is spraying 50-75 i allready have 100 hp jets i can buy some 50-75 jets. i have the ability to control timing yes the turbo will be pushed but its fresh. if it goes it goes then i will upgrade to a evo3 and push it's limits. i have used nitrous before on motor cars just never a turbo car......

 

[v8killer]

Quote:
Originally Posted by v8killer
i have a wet kit it supplies its own fuel. i have a set of 880cc injectors that i can use but i think the 450's will do just fine even if i have to turn the boost down on the nitrous.

What are you using to tune with?

Oliver
[email protected]

i have tunerpro and a aem wideband plus a cas.

 

[THE_ARTIST_]

gettheholeshot.com (i think) they have an eclipse on a T-25 with a direct port dual stage 200 shot running low 10's i believe, just they have built the engine to handle it. but i dont think that a stock rebuild will handle 100 n2o ponies and a high boost 14b for very long.

 

[v8killer]

just wondering i have a rebuilt 7 bolt and i plan on starting out with a 50 shot !

 

[THE_ARTIST_]

just 50 so far...

 

[94Jettameowpsst]

if you have a completely stock motor, id say run as much as you think it will handle. Its more tunable than boost anyways....i dont see why a 200 squirt would be any less reliable than 25+psi of boost making the same amount of hp

 

[AWD_Launch]

just wondering i have a rebuilt 7 bolt and i plan on starting out with a 50 shot !

Its mostly in the tune, there have been people who run stock boost on T25's and had I think a 200 shot. When/if you really do decide to do it, make sure you start out pretty rich like 10.5 A/F's on low timing then slowly add fuel and timing to make power after you have you desired shot. Remember too, these are turbo cars so a 50 shot should make 50+WHP as opposed to BHP when refering to most NA applications.

 

[turboglenn]

On my friends 99 GSX, when we first did the initial round of upgrades he was running a 14b @ 25 psi and a 100 shot of nitrous. The motor lasted, the driveline didn't. He now has a built engine pushign 150 direct port and still breaks driveline parts on a regular basis. We finally got a TRE trans in it, welded center, open rear with a carbon driveshaft (yea, he's loaded) and it's been holding up to his abuse for some time. Basically what i'm saying is the motor can handle quite a bit, the stock tranny won't.

 

[slowgsr]

do it properly.. Good luck on doing 11.90's on the 14B, your wasting your time. You really don't understand what it takes to run 11's, with our without a 14b. So many other area's of the car need to be addressed, not just the power level.

I wouldn't spray a stock bottom end, nitrous power is alot more stress on an engine than turbo power when both engines make the same power, its because of how nitrous comes on, there is no lag time like with boost. This puts a fairly large shock on the engine, not to mention the rest of the drivetrain.

Get something proper to tune your setup as well, at the very least dsmlink, or if you can afford it use AEM or Motec. Megasquirt is another option.

I would upgrade to the 880cc injectors, it couldn't hurt. Goodluck

 

[v8killer]

well the car car will run 11's with this 14b , i know exactly what it takes to run 11's , about 300 whp 2600-2700 race weight and good set of slicks and setup suspension! i have the capabilties and the will to run 11's.......we will see !

 

[97GSTAUTO]

well the car car will run 11's with this 14b , i know exactly what it takes to run 11's , about 300 whp 2600-2700 race weight and good set of slicks and setup suspension! i have the capabilties and the will to run 11's.......we will see !

Just make sure you post a video of the carnage!

 

[byebyev8]

yea you should shoot for 12.9 on that 14b cause trust me to get a 14b in the 12's isn't that easy then 11's is nearly impossible. if your looking for a cheap setup sell the n20 and get a hx35 with a bep housing, you already have the injectors and pump. All you would need is a 150 fmic and some 200$ used 272's. I think you'd meet your goal of 10.9 that way.

 

[v8killer]

Quote:
Originally Posted by v8killer
well the car car will run 11's with this 14b , i know exactly what it takes to run 11's , about 300 whp 2600-2700 race weight and good set of slicks and setup suspension! i have the capabilties and the will to run 11's.......we will see !

Just make sure you post a video of the carnage!

There will be videos !

yea you should shoot for 12.9 on that 14b cause trust me to get a 14b in the 12's isn't that easy then 11's is nearly impossible. if your looking for a cheap setup sell the n20 and get a hx35 with a bep housing, you already have the injectors and pump. All you would need is a 150 fmic and some 200$ used 272's. I think you'd meet your goal of 10.9 that way.

This car will burn if it doesn't run faster than 12.90's ! i went 13.20's @ 103-104 with a bone stock 92 laser rs ? i have everything you mentioned allready. but i have comp 101200 cams !

I'm not scared of nitrous, I know how to use it ! i was wanting other people who have used it to chime in.

 

[delta448]

it will do it on 450's they will be pushed but i think it will do it, the car will be tuned on turbo only be fore spray is even thought of ! the car is pretyy light also but my question was mainly about how much nitrous ?

well the car car will run 11's with this 14b , i know exactly what it takes to run 11's , about 300 whp 2600-2700 race weight and good set of slicks and setup suspension! i have the capabilties and the will to run 11's.......we will see !

How light? You'd better be 2500lbs or less before the fuel and driver are onboard. Even then, you'll still have to tune and drive like a champ to go 11.99 on a 14b.

You will not be able to reach 300whp with stock 450cc injectors. Possibly 300bhp at the flywheel if you nail the tune perfectly and radically increase base fuel pressure, but no way sustained through an AWD drivetrain. You should give up on that idea before you melt a piston.